I am cleaning up my recently purchased engine before installing it. I am pulling off the exhaust header and plan to sandblast and paint it. Besides all the rust, I see that there is a 1/8 inch thick layer of some sort of insulation/paint/something on it, which is flaking off in big chunks. See the picture...
http://www.honda600coupe.com/new_engine_from_sedan.jpg
What shall I do about this stuff? Certainly sandblasting will make it all go away, but should it be replaced with a similar coating, or should I just use a high temp black paint and be done with it? By the way, I intend to remove, clean and replace it as a unit, brackets and all. I do not want to have to deal with seals that I don't have to mess with.
I notice that the heat shields on either side of the engine have a similar, lumpy black coating, but in better shape. Should I attempt to leave this in place?
Steve
cleaning up exhaust headers
Re: cleaning up exhaust headers
I got an off-group reply to my note below ...I hope Bruce doesn't mind that I reprint it here...
Hi Steve, That stuff is sound deadener. Helps keep the noise in the engine and exhaust. If it all comes off then there will be more noise in the engine compartment and therefore more in the passenger compartment. There may be some kind of replacement stuff in a can from Eastwood Company. They can be found on the net. If you don't mind the little bit of extra noise then just spray the parts with High Temp Barbeque paint.
Bruce I looked at Eastwood and found no sound deadeners for exhaust systems, but I did find this stuff, which is essentially insulation to keep in the heat...
http://www.eastwoodco.com/itemdy00.asp? ... 3&Dep_Key1 = A question for the group... who has a coupe or sedan with a sandblasted-and-painted exhaust header and heat exchanger? Any heat-related problems? How could you tell if a problem was heat related anyway? It seems that the Eastwood kit is intended to protect electronic components from heat, and most of the electrical stuff on the Coupe is on the OTHER side of the engine bay (now I guess I know why!) Steve
Hi Steve, That stuff is sound deadener. Helps keep the noise in the engine and exhaust. If it all comes off then there will be more noise in the engine compartment and therefore more in the passenger compartment. There may be some kind of replacement stuff in a can from Eastwood Company. They can be found on the net. If you don't mind the little bit of extra noise then just spray the parts with High Temp Barbeque paint.
Bruce I looked at Eastwood and found no sound deadeners for exhaust systems, but I did find this stuff, which is essentially insulation to keep in the heat...
http://www.eastwoodco.com/itemdy00.asp? ... 3&Dep_Key1 = A question for the group... who has a coupe or sedan with a sandblasted-and-painted exhaust header and heat exchanger? Any heat-related problems? How could you tell if a problem was heat related anyway? It seems that the Eastwood kit is intended to protect electronic components from heat, and most of the electrical stuff on the Coupe is on the OTHER side of the engine bay (now I guess I know why!) Steve
-
riceburner006
- Posts: 134
- Joined: Sat Jul 06, 2002 7:23 am
Re: cleaning up exhaust headers
--- In anzhonda600owners@yahoogroups.com, Steven Michelsen
wrote:
the X-changer,where it belongs! Mine are all blasted clean then
painted. Once tried refractory cement,which looked original,but
din't adhere well! I once used that tape on the header pipes just
before the X-changer as it helps insulate the pipes so therefor your
heater works better! riceburner006
wrote:
I would say that the sound deadener also helps to keep heat inside> I got an off-group reply to my note below ...I hope Bruce doesn't mind that
> I reprint it here...
> Hi Steve,
> That stuff is sound deadener. Helps keep the noise in the engine and
> exhaust. If it all comes off then there will be more noise in the engine
> compartment and therefore more in the passenger compartment. There may
> be some kind of replacement stuff in a can from Eastwood Company. They
> can be found on the net. If you don't mind the little bit of extra noise
> then just spray the parts with High Temp Barbeque paint.
> Bruce
> I looked at Eastwood and found no sound deadeners for exhaust systems, but I
> did find this stuff, which is essentially insulation to keep in the heat...
http://www.eastwoodco.com/itemdy00.asp? ... &Dep_Key1=
> A question for the group... who has a coupe or sedan with a
> sandblasted-and-painted exhaust header and heat exchanger? Any heat-related
> problems? How could you tell if a problem was heat related anyway? It
> seems that the Eastwood kit is intended to protect electronic components
> from heat, and most of the electrical stuff on the Coupe is on the OTHER
> side of the engine bay (now I guess I know why!)
> Steve
the X-changer,where it belongs! Mine are all blasted clean then
painted. Once tried refractory cement,which looked original,but
din't adhere well! I once used that tape on the header pipes just
before the X-changer as it helps insulate the pipes so therefor your
heater works better! riceburner006
> ----- Original Message -----
> From: "Steven Michelsen"
> To: Sent: Monday, December 01, 2003 10:44 PM
> Subject: Re: [2cylinderhondas] Re: cleaning up exhaust headers
> > I got all the bolts off OK, and bagged and labelled them for re- use. I
> > discovered that it is pretty much impossible to remove the heat
> > exchanger/exhaust pipes with separating them into two parts. In one
> piece,
> > the combination of the clutch lever in the back and the bolts in the
> front,
> > blocks the removal. The seal found between them is solid and reusable,
> > fortunately.
> > The fins seem OK - not loose, no rattle. I will not worry about
> replacing
> > the eighth-inch thick insulation, or whatever it was, around the heat
> > exchanger. Here is another picture of the stuff...
http://www.honda600coupe.com/thick_and_ ... lation.jpg Could it be
> > asbestos?
> > Vibration washers between the larger bracket and the clutch cover? They
> > look like regular washers to me...just plain steel. I see that the heat
> > shields have rubber washers - but they are disintegrating. Is there an
> > easy-to-find replacement for those?
> > Steve
> > ----- Original Message -----
> > From: "Miles"
> > To: > Sent: Monday, December 01, 2003 9:51 PM
> > Subject: [2cylinderhondas] Re: cleaning up exhaust headers
> > Pretty much when the engine is in the car you can't see the heater
> > parts. More importantly is the fins on the inside of the heat
> > exchanger. Many times they are loose or missing and make noise or the
> > heater is insufficient. I would just lightly sandblast the pipes and
> > paint black with high temp paint. The front pipes get so hot the
> > paint usually burns off.
> > If you are not going to dismantle the pipes, I hope you never plan to
> > do a clutch job with the engine in car. Those bolts get rusted into
> > the heat exchanger and a a bear to get out, they usually snap off.
> > You will may have a difficult time reinstalling the vibration washers
> > between the larger bracket and the clutch cover, if for some reason
> > you opt not to use the original bolts keep in mind too long of a top
> > bolt will interfere with the clutch rotation.
> > Miles
> > PS, sounds like you old engine threw a rod, may not have actually
> > gone thru the cases but.....
> > --- In
2cylinderhondas@yahoogroups.com
, Steven Michelsen
> > wrote:
> > > I am cleaning up my recently purchased engine before installing
> > it. I am pulling off the exhaust header and plan to sandblast and
> > paint it. Besides all the rust, I see that there is a 1/8 inch
> > thick layer of some sort of insulation/paint/something on it, which
> > is flaking off in big chunks. See the picture...
http://www.honda600coupe.com/new_engine_from_sedan.jpg
> > > What shall I do about this stuff? Certainly sandblasting will make
> > it all go away, but should it be replaced with a similar coating, or
> > should I just use a high temp black paint and be done with it? By
> > the way, I intend to remove, clean and replace it as a unit, brackets
> > and all. I do not want to have to deal with seals that I don't have
> > to mess with.
> > > I notice that the heat shields on either side of the engine have a
> > similar, lumpy black coating, but in better shape. Should I attempt
> > to leave this in place?
> > > Steve
