Re: [anzhonda600owners] RE: [2cylinderhondas] High temp spray paint

friend · Post by **friend** » Fri Jul 15, 2011 12:08 am

�
Kev
I don't know why this is a discussion, Honda put a coat of clear on the cases when these engines were new. Much of it burned off over the years, or was cleaned off with bead blasting or solvents like carb cleaner. Owners of low mileage cars can attest to this as it will look yellowed. Bare metal will oxidize, stain and corrode over time creating an even worse cooling surface. Aluminum exfoliates due largely to bimetallic corrosion, so plating your steel bolts, covering the exposed surfaces is necessary protection.
The running temp of the oil on an engine gets to about 190 degrees, the cylinder head temp is at about 350 degrees under the plugs. That's on both painted and unpainted engines. I know this because I have installed gages on my cars over the years and this is what is indicated. This means it's not that critical. What is critical is the internal parts of the engine.
Warn parts will have more heat than like new. Observing the tolerances as described in the Honda factory manuals will keep your engine cooler and running longer. Having a clean like new engine on the outside like you do with the mechanical parts on the inside is something every owner should have as a goal.
Bill

> -----Original Message-----
> From:
> anzhonda600owners@yahoogroups.com
> [mailto:anzhonda600owners@yahoogroups.com]
> On Behalf Of
> Kevin
> Lister
> Sent:
> Thursday, July 14, 2011 4:48 PM
> To:
> anzhonda600owners@yahoogroups.com
> Subject:
> Re: [anzhonda600owners]
> RE: [2cylinderhondas] High temp spray paint
> You can disagree if you want but laminar air flow across a bare > metal surface is always preferable to a painted metal for dumping heat.
> I've heard of hi-tech ceramic coatings that can be put on metal to aid > in removing heat but this is expensive and I'm not convincded that > it will make a huge difference in shedding heat. I wouldn't just > believe in the all of the various claims of paints aiding in shedding > heat. I'm just not convinced that coating the barrel is a good idea. It > is really best to keep the metal fins clean and free of oil and dirt > build up. YMMV.
> Check out the Black Body Emitter (BBE) coating at Swaintech.
> Are there any physicists or materials engineers on the group? What > do you think?
> --- On
> Wed, 7/13/11, billmyong@...
>
> wrote:
> > From:
> > billmyong@...
> > Subject:
> > [anzhonda600owners] RE: [2cylinderhondas] High temp spray paint > > To:
> > billmyong@..., "Anzhonda600owners@Yahoogroups. Com" > > , > > 2cylinderhondas@yahoogroups.com > > Date: Wednesday, July 13, 2011, > > 11:24 PM
> > �
> > > Disagree,
> > > Hirsch Automotive has a paint I like to use on all exterior > > > parts Empt-16A, they call it Space Age Bright Aluminum. An > > > 1800 degree formula withstanding all weather conditions.
> > > It does not fully cure until the engine heats up. I > > > have one engine that is 10 years since painting and it still > > > looks fresh. I have noticed no over > > > heating. See a picture of one in the ANZhonda600owners group > > > site, the last page photo album.
> > > Bill
> > > > -----Original
> > > > Message-----
> > > > From:
> > > > 2cylinderhondas@yahoogroups.com
> > > > [mailto:2cylinderhondas@yahoogroups.com] > > > > On Behalf Of > > > > Kevin > > > > Lister > > > > Sent:
> > > > Tuesday, July 12, 2011 2:16
> > > > PM
> > > > To:
> > > > 2cylinderhondas@yahoogroups.com
> > > > Subject:
> > > > Re:
> > > > [2cylinderhondas] High temp spray
> > > > paint
> > > > Johnny,
> > > > What are you planning to paint?
> > > > I wouldn't paint the cylinder as paint on that can
> > > > hinder the cooling process.
> > > > kev
> > > > --- On
> > > > Tue, 7/12/11,
> > > > johnny.siu@...
> > > >
> > > > wrote:
> > > > > From:
> > > > > johnny.siu@...
> > > > >
> > > > > Subject: [2cylinderhondas]
> > > > > High temp spray paint
> > > > > To:
> > > > > 2cylinderhondas@yahoogroups.com > > > > > Date: Tuesday, July 12, > > > > > 2011, 2:11 PM
> > > > > I want to clean up my engine and spray paint
> > > > > it.
> > > > > Can anyone recommend a good high temperate
> > > > > sliver/chrome spray paint?
> > > > > many
> > > > > thx

theenginebuilder · Post by **theenginebuilder** » Sat Jul 16, 2011 2:44 pm

Group,
The clear coating was done at the factory to protect the aluminum parts from corrosion on the boat ride over. Yes, it turns yellow with age and heat. From a thermal standpoint though bare aluminum cools better than coated or painted. Keep it clean from oil and grease though. It will hold in a great deal of heat. Unless you're running your engine hard you can coat it with whatever you want. If you're going to make more power and race it then leave it naked!.
Just my 40+ years of experience building engines professionally.
Bruce

--- In
2cylinderhondas@yahoogroups.com
, wrote:
> Kev
> I don't know why this is a discussion, Honda put a coat of clear on the cases when these engines were new. Much of it burned off over the years, or was cleaned off with bead blasting or solvents like carb cleaner. Owners of low mileage cars can attest to this as it will look yellowed. Bare metal will oxidize, stain and corrode over time creating an even worse cooling surface. Aluminum exfoliates due largely to bimetallic corrosion, so plating your steel bolts, covering the exposed surfaces is necessary protection.
> The running temp of the oil on an engine gets to about 190 degrees, the cylinder head temp is at about 350 degrees under the plugs. That's on both painted and unpainted engines. I know this because I have installed gages on my cars over the years and this is what is indicated. This means it's not that critical. What is critical is the internal parts of the engine. Warn parts will have more heat than like new. Observing the tolerances as described in the Honda factory manuals will keep your engine cooler and running longer. Having a clean like new engine on the outside like you do with the mechanical parts on the inside is something every owner should have as a goal.
> Bill
> -----Original Message-----
> From:
anzhonda600owners@yahoogroups.com
[mailto:
anzhonda600owners@yahoogroups.com
]On Behalf Of Kevin Lister
> Sent: Thursday, July 14, 2011 4:48 PM
> To:
anzhonda600owners@yahoogroups.com
> Subject: Re: [anzhonda600owners] RE: [2cylinderhondas] High temp spray paint
> You can disagree if you want but laminar air flow across a bare metal surface is always preferable to a painted metal for dumping heat. I've heard of hi-tech ceramic coatings that can be put on metal to aid in removing heat but this is expensive and I'm not convincded that it will make a huge difference in shedding heat. I wouldn't just believe in the all of the various claims of paints aiding in shedding heat. I'm just not convinced that coating the barrel is a good idea. It is really best to keep the metal fins clean and free of oil and dirt build up. YMMV.
> Check out the Black Body Emitter (BBE) coating at Swaintech.
> Are there any physicists or materials engineers on the group? What do you think?
> --- On Wed, 7/13/11, billmyong@... wrote:
> From: billmyong@...
> Subject: [anzhonda600owners] RE: [2cylinderhondas] High temp spray paint
> To: billmyong@..., "Anzhonda600owners@Yahoogroups. Com" , 2cylinderhondas@yahoogroups.com
> Date: Wednesday, July 13, 2011, 11:24 PM
>
> Disagree, Hirsch Automotive has a paint I like to use on all exterior parts Empt-16A, they call it Space Age Bright Aluminum. An 1800 degree formula withstanding all weather conditions. It does not fully cure until the engine heats up. I have one engine that is 10 years since painting and it still looks fresh. I have noticed no over heating. See a picture of one in the ANZhonda600owners group site, the last page photo album.
> Bill
> -----Original Message-----
> From:
2cylinderhondas@yahoogroups.com
[mailto:
2cylinderhondas@yahoogroups.com
]On Behalf Of Kevin Lister
> Sent: Tuesday, July 12, 2011 2:16 PM
> To:
2cylinderhondas@yahoogroups.com
> Subject: Re: [2cylinderhondas] High temp spray paint
> Johnny,
> What are you planning to paint?
> I wouldn't paint the cylinder as paint on that can hinder the cooling process.
> kev
> --- On Tue, 7/12/11, johnny.siu@... wrote:
> From: johnny.siu@...
> Subject: [2cylinderhondas] High temp spray paint
> To:
2cylinderhondas@yahoogroups.com
> Date: Tuesday, July 12, 2011, 2:11 PM
> I want to clean up my engine and spray paint it.
> Can anyone recommend a good high temperate sliver/chrome spray paint?
> many thx

friend · Post by **friend** » Sun Jul 17, 2011 2:13 am

Some clarity in that line of thinking;
All cars come over in Roll on Roll off / enclosed ships, (they started way before Honda shipped cars) there is more salt from driving them onto the docks then on the trip over. NAPA, AUTO ZONE, CHECKER to name a few all sell dozens of cans of engine spray paint. And according to what your saying they are scamming all of us, because none of them say "Caution!
Don't spray paint Air-cooled cylinder fins, it may cause over heating".
Edelbrock coats their metal with a durashine system that never needs polishing, not to mention companies like Eastwood that promote preservation products which include engine coatings. And one other point "If it is such a hindrance to cooling why are radiators painted?"
The only thing that lessens the cooling effect of air cooled fin assemblies is if it (paint) is applied to a thickness which will make the surface smooth. Even then it is minimal.
Paint your engines, keep them clean, take pride in having a unique car with a new looking engine that will last.
Bill

> -----Original Message-----
> From:
> 2cylinderhondas@yahoogroups.com [mailto:2cylinderhondas@yahoogroups.com] > On > Behalf Of > theenginebuilder > Sent:
> Saturday, July 16, 2011 2:44
> PM
> To:
> 2cylinderhondas@yahoogroups.com
> Subject:
> Re:
> [anzhonda600owners] RE: [2cylinderhondas] High temp spray > paint
> Group,
> The clear coating was done at the factory to protect the aluminum > parts from corrosion on the boat ride over. Yes, it turns yellow with age and > heat. From a thermal standpoint though bare aluminum cools better than coated > or painted. Keep it clean from oil and grease though. It will hold in a great > deal of heat. Unless you're running your engine hard you can coat it with > whatever you want. If you're going to make more power and race it then leave > it naked!.
> Just my 40+ years of experience building engines
> professionally.
> Bruce
> --- In
> 2cylinderhondas@yahoogroups.com
> ,
> wrote:
> > Kev
> > I don't know
> why this is a discussion, Honda put a coat of clear on the cases when these > engines were new. Much of it burned off over the years, or was cleaned off > with bead blasting or solvents like carb cleaner. Owners of low mileage cars > can attest to this as it will look yellowed. Bare metal will oxidize, stain > and corrode over time creating an even worse cooling surface. Aluminum > exfoliates due largely to bimetallic corrosion, so plating your steel bolts, > covering the exposed surfaces is necessary protection.
> > The
> running temp of the oil on an engine gets to about 190 degrees, the cylinder > head temp is at about 350 degrees under the plugs. That's on both painted and > unpainted engines. I know this because I have installed gages on my cars over > the years and this is what is indicated. This means it's not that critical.
> What is critical is the internal parts of the engine. Warn parts will have > more heat than like new. Observing the tolerances as described in the Honda > factory manuals will keep your engine cooler and running longer. Having a > clean like new engine on the outside like you do with the mechanical parts on > the inside is something every owner should have as a goal.
> Bill
> > -----Original
> Message-----
> > From:
> anzhonda600owners@yahoogroups.com
> [mailto:
> anzhonda600owners@yahoogroups.com
> ]On
> Behalf Of Kevin Lister
> > Sent: Thursday, July 14, 2011 4:48 PM
> To:
> anzhonda600owners@yahoogroups.com
> Subject: Re: [anzhonda600owners] RE: [2cylinderhondas] High temp spray > paint
> > You can disagree if you want but
> laminar air flow across a bare metal surface is always preferable to a painted > metal for dumping heat. I've heard of hi-tech ceramic coatings that can be put > on metal to aid in removing heat but this is expensive and I'm not convincded > that it will make a huge difference in shedding heat. I wouldn't just believe > in the all of the various claims of paints aiding in shedding heat. I'm just > not convinced that coating the barrel is a good idea. It is really best to > keep the metal fins clean and free of oil and dirt build up. YMMV.
> > Check out the Black Body Emitter (BBE) coating at Swaintech.
> > Are there any physicists or materials engineers on the group? What do > you think?
> > --- On Wed, 7/13/11, billmyong@...
> wrote:
> > From: billmyong@...
>
> > Subject: [anzhonda600owners] RE:
> [2cylinderhondas] High temp spray paint
> > To: billmyong@...,
> "Anzhonda600owners@Yahoogroups. Com" anzhonda600owners@yahoogroups.com
> >,
> 2cylinderhondas@yahoogroups.com
> Date: Wednesday, July 13, 2011, 11:24 PM
>
> > Disagree, Hirsch Automotive has a paint I like to use on > all exterior parts Empt-16A, they call it Space Age Bright Aluminum. An 1800 > degree formula withstanding all weather conditions. It does not fully cure > until the engine heats up. I have one engine that is 10 years since painting > and it still looks fresh. I have noticed no over heating. See a picture of one > in the ANZhonda600owners group site, the last page photo album.
> > Bill
> > -----Original
> Message-----
> > From:
> 2cylinderhondas@yahoogroups.com
> [mailto:
> 2cylinderhondas@yahoogroups.com
> ]On
> Behalf Of Kevin Lister
> > Sent: Tuesday, July 12, 2011 2:16 PM
> To:
> 2cylinderhondas@yahoogroups.com
> Subject: Re: [2cylinderhondas] High temp spray paint
> > Johnny,
> > What are you planning to paint?
> > I wouldn't paint the cylinder as paint on that can hinder the cooling > process.
> > kev
> > --- On Tue, 7/12/11,
> johnny.siu@... wrote:
> > From:
> johnny.siu@...
> > Subject: [2cylinderhondas] High
> temp spray paint
> > To:
> 2cylinderhondas@yahoogroups.com
> Date: Tuesday, July 12, 2011, 2:11 PM
> > I
> want to clean up my engine and spray paint it.
> > Can anyone recommend a
> good high temperate sliver/chrome spray paint?
> > many
> thx

Dr. Whiting · Post by **Dr. Whiting** » Sun Jul 17, 2011 1:10 pm

It looks like you haven't been inside one of the ships or worked on cars after their journey on a ship. The inside of a ship is NOT MOISTURE OR SALT FREE! The manufacturer doesn't spray the aluminum engines to keep them looking pretty for you after years on the road. They only want to keep it looking nice to make the sale. After that they hope it makes it out of warranty before it falls apart.
NAPA and the rest of the aftermarket parts stores are in the business of making a profit on what they sell. They could care less if your engine overheats and blows up from being painted. They made a sale and profit on the can of paint they sold you.
The paint on a radiator is a special thermal transfer paint. It helps to move heat from the radiator to the air. It used to be that the good stuff barely dried to the touch. If you leaned on it for too long doing a repair you ended up with a sticky black patch on your skin. California helped kill the good paint. They must have found that it killed someone's favorite bug! If you use regular paint on a radiator you are actually creating a thermal barrier. It will only cause problems with engines that have had performance improvements or have a poorly designed cooling system.
Facts are facts and opinions can cause problems when spouted as facts to the inexperienced. It is the responsibility of those who know the truth to tell it and after that the inexperienced can do what they want.
Bruce

Paige Hunt · Post by **Paige Hunt** » Sun Jul 17, 2011 1:54 pm

hi bruce and bill--
you both make EXCELLENT points, so i find it very confusing to make up my mind as to which one of you is more correct--looks like you both have studied this (and other aspects of cooling) down to the molecular level. i'd like to say again that we are all very lucky to have so much knowledge on this one site, and i guess it's up to each one of us to decide which alternative (painting our engines versus not) to accept. in this case, i think bill is correct, only due to the fact that he ACTUALLY used gauges to prove his side and he found little to no difference in painted versus unpainted cooling fins/blocks--unless i'm missing something--
bruce, did you check temperatures on both painted and un-painted motors and did you find any SIGNIFICANT temperature differences?
please let me know, as this and this alone (to me, at least) will put this discussion to bed.
isn't this REALLY what's important--what, if any, ACTUAL temperature difference is made by painting the cooling surface (or any part of an engine) and if it's just 5-10 degrees, is it really that critical?
thanks again for the input from both of you guys--
i'm enjoying the wealth of information
paige

--- On
Sun, 7/17/11, theenginebuilder@...

wrote:
From: theenginebuilder@...
Subject: Re: [anzhonda600owners] RE: [2cylinderhondas] High temp spray paint To: 2cylinderhondas@yahoogroups.com Date: Sunday, July 17, 2011, 1:10 PM
It looks like you haven't been inside one of the ships or worked on cars after their journey on a ship. The inside of a ship is NOT MOISTURE OR SALT FREE! The manufacturer doesn't spray the aluminum engines to keep them looking pretty for you after years on the road. They only want to keep it looking nice to make the sale. After that they hope it makes it out of warranty before it falls apart.
NAPA and the rest of the aftermarket parts stores are in the business of making a profit on what they sell. They could care less if your engine overheats and blows up from being painted. They made a sale and profit on the can of paint they sold you.
The paint on a radiator is a special thermal transfer paint. It helps to move heat from the radiator to the air. It used to be that the good stuff barely dried to the touch. If you leaned on it for too long doing a repair you ended up with a sticky black patch on your skin. California helped kill the good paint. They must have found that it killed someone's favorite bug! If you use regular paint on a radiator you are actually creating a thermal barrier. It will only cause problems with engines that have had performance improvements or have a poorly designed cooling system.
Facts are facts and opinions can cause problems when spouted as facts to the inexperienced. It is the responsibility of those who know the truth to tell it and after that the inexperienced can do what they want.
Bruce

friend · Post by **friend** » Mon Jul 18, 2011 12:37 am

�
Personal experience, I have shipped vehicles back from Hawaii, and spent 30 years in Naval Service with plenty of underway time. I've been on the docks when vehicles were brought into Hawaii for the most part of 14 years, between 1970 and 1984 and none of them were awash with sea salt.
Sure, engines could be painted for protection from the elements, but if that was the only concern there are many other short term solutions to keep bare metal from corroding. So bruce, I believe your theory's don't hold water.
As far as the exaggeration of a catastrophic event like an engine blowing up from over heating; Sure heat is a problem, and I have taken many of these engines apart and they have over heated which is evident because there is a tar like film on the inside of the engine from over heated oil. However I have tracked the temperature of the oil in the Honda 600 by placing a sending unit in a specially made oil drain plug. Normally a good condition engine will run at 165 to 175 un the freeways. In town they run hotter, normally in the 190 to 220 range. But what is of concern is when coming off the freeway and stopping at the first stop light the temp gage pegs 240 and up. So I use oil coolers on cars I am driving several times a week. And it keeps the oil in the 190 to 205 range on city streets, dropping down to 165 to 175 on the freeways. And, if you read in the Honda Sedan repair manual, there is a oil cooler on the Hondamatic.
You say there are facts, where? I only hear your theory, which has no documentation.
Bill

> -----Original Message-----
> From:
> 2cylinderhondas@yahoogroups.com [mailto:2cylinderhondas@yahoogroups.com] > On > Behalf Of > theenginebuilder@...
> Sent:
> Sunday, July 17,
> 2011 1:11 PM
> To:
> 2cylinderhondas@yahoogroups.com
> Subject:
> Re: [anzhonda600owners] RE: [2cylinderhondas] High temp spray > paint
> It looks like you haven't been inside one of the ships or worked on cars > after their journey on a ship. The inside of a ship is NOT MOISTURE OR SALT > FREE! The manufacturer doesn't spray the aluminum engines to keep them looking > pretty for you after years on the road. They only want to keep it looking nice > to make the sale. After that they hope it makes it out of warranty before it > falls apart.
> NAPA and the rest of the aftermarket parts stores are in
> the business of making a profit on what they sell. They could care less if > your engine overheats and blows up from being painted. They made a sale and > profit on the can of paint they sold you.
> The paint on a radiator is a
> special thermal transfer paint. It helps to move heat from the radiator to the > air. It used to be that the good stuff barely dried to the touch. If you > leaned on it for too long doing a repair you ended up with a sticky black > patch on your skin. California helped kill the good paint. They must have > found that it killed someone's favorite bug! If you use regular paint on a > radiator you are actually creating a thermal barrier. It will only cause > problems with engines that have had performance improvements or have a poorly > designed cooling system.
> Facts are facts and opinions can cause
> problems when spouted as facts to the inexperienced. It is the responsibility > of those who know the truth to tell it and after that the inexperienced can do > what they want.
> Bruce

Kevin Lister · Post by **Kevin Lister** » Mon Jul 18, 2011 11:43 am

Makes perfect sense!
Again, I'm not telling anyone they shouldn't paint their cylinders.
I'm saying that I wouldn't paint mine. ;o)
kev

--- On
Sat, 7/16/11, theenginebuilder

wrote:
From: theenginebuilder
Subject: Re: [anzhonda600owners] RE: [2cylinderhondas] High temp spray paint To: 2cylinderhondas@yahoogroups.com Date: Saturday, July 16, 2011, 2:44 PM
Group,
The clear coating was done at the factory to protect the aluminum parts from corrosion on the boat ride over. Yes, it turns yellow with age and heat. From a thermal standpoint though bare aluminum cools better than coated or painted. Keep it clean from oil and grease though. It will hold in a great deal of heat. Unless you're running your engine hard you can coat it with whatever you want. If you're going to make more power and race it then leave it naked!.
Just my 40+ years of experience building engines professionally.
Bruce
--- In
2cylinderhondas@yahoogroups.com
, wrote:
> Kev
> I don't know why this is a discussion, Honda put a coat of clear on the cases when these engines were new. Much of it burned off over the years, or was cleaned off with bead blasting or solvents like carb cleaner. Owners of low mileage cars can attest to this as it will look yellowed. Bare metal will oxidize, stain and corrode over time creating an even worse cooling surface. Aluminum exfoliates due largely to bimetallic corrosion, so plating your steel bolts, covering the exposed surfaces is necessary protection.
> The running temp of the oil on an engine gets to about 190 degrees, the cylinder head temp is at about 350 degrees under the plugs. That's on both painted and unpainted engines. I know this because I have installed gages on my cars over the years and this is what is indicated. This means it's not that critical. What is critical is the internal parts of the engine. Warn parts will have more heat than like new. Observing the tolerances as described in the Honda factory manuals will keep your engine cooler and running longer. Having a clean like new engine on the outside like you do with the mechanical parts on the inside is something every owner should have as a goal.
> Bill
> -----Original Message-----
> From:
anzhonda600owners@yahoogroups.com
[mailto:
anzhonda600owners@yahoogroups.com
]On Behalf Of Kevin Lister
> Sent: Thursday, July 14, 2011 4:48 PM
> To:
anzhonda600owners@yahoogroups.com
Subject: Re: [anzhonda600owners] RE: [2cylinderhondas] High temp spray paint
> You can disagree if you want but laminar air flow across a bare metal surface is always preferable to a painted metal for dumping heat. I've heard of hi-tech ceramic coatings that can be put on metal to aid in removing heat but this is expensive and I'm not convincded that it will make a huge difference in shedding heat. I wouldn't just believe in the all of the various claims of paints aiding in shedding heat. I'm just not convinced that coating the barrel is a good idea. It is really best to keep the metal fins clean and free of oil and dirt build up. YMMV.
> Check out the Black Body Emitter (BBE) coating at Swaintech.
> Are there any physicists or materials engineers on the group? What do you think?
> --- On Wed, 7/13/11, billmyong@... wrote:
> From:
billmyong@...
> Subject: [anzhonda600owners] RE: [2cylinderhondas] High temp spray paint > To: billmyong@..., "Anzhonda600owners@Yahoogroups. Com" , 2cylinderhondas@yahoogroups.com > Date: Wednesday, July 13, 2011, 11:24 PM
>
> Disagree, Hirsch Automotive has a paint I like to use on all exterior parts Empt-16A, they call it Space Age Bright Aluminum. An 1800 degree formula withstanding all weather conditions. It does not fully cure until the engine heats up. I have one engine that is 10 years since painting and it still looks fresh. I have noticed no over heating. See a picture of one in the ANZhonda600owners group site, the last page photo album.
> Bill
> -----Original Message-----
> From:
2cylinderhondas@yahoogroups.com
[mailto:
2cylinderhondas@yahoogroups.com
]On Behalf Of Kevin Lister
> Sent: Tuesday, July 12, 2011 2:16 PM
> To:
2cylinderhondas@yahoogroups.com
> Subject: Re: [2cylinderhondas] High temp spray paint
> Johnny,
> What are you planning to paint?
> I wouldn't paint the cylinder as paint on that can hinder the cooling process.
> kev
> --- On Tue, 7/12/11, johnny.siu@... wrote:
> From: johnny.siu@...
> Subject: [2cylinderhondas] High temp spray paint
> To:
2cylinderhondas@yahoogroups.com
> Date: Tuesday, July 12, 2011, 2:11 PM
> I want to clean up my engine and spray paint it.
> Can anyone recommend a good high temperate
sliver/chrome spray paint?
> many thx

Kevin Lister · Post by **Kevin Lister** » Mon Jul 18, 2011 11:58 am

Hi Paige,
Are you building a show car that will rarely run or are you building a daily driver?
If show car then paint away. If daily driver I wouldn't paint the cylinder.
When in doubt use caution. It is a fact that bare metal on the cylinder is normal for engines and it will mean a cooler running engine. The difference is not 5 to 10 degrees. The difference between a painted verses unpainted cylinder could mean the difference between causing damage to your engine and not.
If the car is to be a daily driver then the engine doesn't need to be painted. It needs to run reliably and be as safe from the damaging effects of heat as possible. Every time you run your engine it is being damaged a little at a time. The more heat, the more damage. It will add up over time.
Keep in mind the engine is air cooled and on a very hot day the stresses on the metal in the engine due to heat are great.
So, feel free to do what you want. But, if it were my car I would paint the cases and the valve cover, and the cam housing, etc, but not the cylinder!
Best wishes on your project! ;o)
kev

--- On
Sun, 7/17/11, Paige Hunt

wrote:
From: Paige Hunt
Subject: Re: [anzhonda600owners] RE: [2cylinderhondas] High temp spray paint To: 2cylinderhondas@yahoogroups.com Date: Sunday, July 17, 2011, 1:48 PM
hi bruce and bill--
you both make EXCELLENT points, so i find it very confusing to make up my mind as to which one of you is more correct--looks like you both have studied this (and other aspects of cooling) down to the molecular level. i'd like to say again that we are all very lucky to have so much knowledge on this one site, and i guess it's up to each one of us to decide which alternative (painting our engines versus not) to accept. in this case, i think bill is correct, only due to the fact that he ACTUALLY used gauges to prove his side and he found little to no difference in painted versus unpainted cooling fins/blocks--unless i'm missing something--
bruce, did you check temperatures on both painted and un-painted motors and did you find any SIGNIFICANT temperature differences?
please let me know, as this and this alone (to me, at least) will put this discussion to bed.
isn't this REALLY what's important--what, if any, ACTUAL temperature difference is made by painting the cooling surface (or any part of an engine) and if it's just 5-10 degrees, is it really that critical?
thanks again for the input from both of you guys--
i'm enjoying the wealth of information
paige
--- On
Sun, 7/17/11, theenginebuilder@...

wrote:
> From: theenginebuilder@...
> Subject: Re: [anzhonda600owners] RE: [2cylinderhondas] High temp spray paint > To: 2cylinderhondas@yahoogroups.com > Date: Sunday, July 17, 2011, 1:10 PM
> It looks like you haven't been inside one of the ships or worked on cars after their journey on a ship. The inside of a ship is NOT MOISTURE OR SALT FREE! The manufacturer doesn't spray the aluminum engines to keep them looking pretty for you after years on the road. They only want to keep it looking nice to make the sale. After that they hope it makes it out of warranty before it falls apart.
> NAPA and the rest of the aftermarket parts stores are in the business of making a profit on what they sell. They could care less if your engine overheats and blows up from being painted. They made a sale and profit on the can of paint they sold you.
> The paint on a radiator is a special thermal transfer paint. It helps to move heat from the radiator to the air. It used to be that the good stuff barely dried to the touch. If you leaned on it for too long doing a repair you ended up with a sticky black patch on your skin. California helped kill the > good paint. They must have found that it killed someone's favorite bug! If you use regular paint on a radiator you are actually creating a thermal barrier. It will only cause problems with engines that have had performance improvements or have a poorly designed cooling system.
> Facts are facts and opinions can cause problems when spouted as facts to the inexperienced. It is the responsibility of those who know the truth to tell it and after that the inexperienced can do what they want.
> Bruce