> ----- Original Message -----
> From:
> billmyong@...
> To:
>
anzhonda600owners@yahoogroups.com
> Sent:
> Thursday, May 06, 2010 4:36
> PM
> Subject:
> RE: [anzhonda600owners]
> [2cylinderhondas] Re: 90 mph in a 600 sedan
> Hi
> Lyle;
> Nice rig for your Coupe.
> The topic was and still is "what is the top speed of a Honda > 600. In original fully operational engine with all parts in factory new > specs, the car will not go above 85 mph by the onboard speedometer. Now, > if there is a Constant transmission speedometer gear in the full synchro > transmission then you might read 90 on the speedometer because there is one > less tooth on the gear. Yep, the constant transmission speedometer gear > has 15 teeth and the Full synchro transmission speedometer gear has 16.
> We like the 15 tooth gear because the shafts are normally not warn as much as > the 16 tooth gear is. Less wear, no leak.
> So, if your Honda 600 says it's running at 65
> and every one is passing you, (yea, I know everyone wants to pass you anyway - > no respect) pull the speedo gear and count the teeth.
> Bill
> > -----Original Message-----
> > From:
> > anzhonda600owners@ yahoogroups. com
> > [mailto:anzhonda600 owners@yahoogrou ps.com]
> > On Behalf Of
> > lyletrudell
> > Sent:
> > Wednesday, May 05, 2010 10:41
> > PM
> > To:
> > anzhonda600owners@ yahoogroups. com
> > Subject:
> > [anzhonda600owners] [2cylinderhondas] Re: 90 mph in a 600 > > sedan
> > Hi Bill, you lost me on this?
> > "The points only advance so far,
> > which is when the RPM's reach
> > around 7200, the points move past the
> > rotation of the advancer assembly(lobe) causing the points not to open. The > > engine stops running at that point not reaching 90 MPH".
> > Are you
> > saying the points are floating at 7,200 which is limiting the RPM's? Because > > the advancer unit has already moved the points to max advance 34degree's at > > 4,000rpm's.
> > This is very possible for cheap stock points.
> > Pertronics
> > would solve the point float issue.
> > It could also be that the engine
> > valves are floating at 7,200rpm's?
> > This could ruin my chances for a 90mph
> > run......
> > Lyle
> > --- In
> > anzhonda600owners@ yahoogroups. com
> > ,
> > "lyletrudell" wrote:
> > > I have
> > been reading past posts....lots of good info!!
> > > Learning alot about
> > the unusual things about these cars.
> > > From my racing hobbies I have
> > learned what most engines and things need for more power/speed.
> > > Many
> > things will limit the max RPM or MPH of any car, a "few" are:
> > 1)Ignition, timing initial and total advance, spark strength.
> > > 2)Cam
> > timing
> > > 3)Cam profile
> > > 4)Intake flow
> > > 5)Exhaust
> > flow
> > > 6)Higher compression
> > > 7)Internal friction
> > 8)External friction
> > > 9)Aerodynamic drag
> > > Lets look at
> > any performance 4 stroke engine, yes the 600 is a performance motor. More > > than 1HP per cube!
> > > 1)The ignition timing is OK:
> > > 10
> > degree initial with a total advance of 34 at 4,000 RPM.
> > > Maybe bump
> > the initial up a few degree's to 12-15 depending on Octane, and limit the > > total to 36.....don't go over 36!
> > > Maybe some weaker advance springs
> > to let the timing come all in at 3,000.
> > > Hotter spark, a single fire
> > coil from a Harley and a MSD box.
> >
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> > 2)Cam timing, maybe slot the cam gear and advance the stock cam 3-4 > > degree's.
> > > 3)Cam profiles allow the valves to open more and stay open > > longer. Good for moving the power band up the RPM scale, but at the expense > > of low end power. The cam profile probably is hurting RPM.
> > > 4)Intake
> > flow, The 38 carb is fine, if it's jetted properly to match the exhaust.
> > Maybe some porting and a free flowing air filter..K&N.
> > 5)Exhaust, an equal length header with a free flow muffler.
> > > 6)Higher
> > compression pistons always help power.
> > > 7)Internal friction, this is
> > a big one and my favorite! So many area's....Crank aligned, bearing pockets > > matched, crank parrallel to the case top, bores square to the crank, matched > > and balanced.
> > > Good synthetic oil.....keep everything cool.
> > 8)External friction, this area is always forgotten. The Honda should be good > > here, light weight, small rotating mass. Check wheel bearings use sythetic > > grease, tires max air pressure, eliminate brake drag, steering > > components/alignmen t, anything that rotates causes friction.
> > Electric cooling fan....
> > > 9)Aerodynamics, again the Honda coupe is
> > good here. Small frontal area, small skinny tires, chopped back, good rake > > to the windshield. Maybe lower it a little.
> > > So could we see
> > 90mph?
> > > I think so, if "everything" was right.
> > > This is kinda
> > like breaking a land speed record....and only getting a speeding fine for 15 > > over!
> > > Florida is a good place to try it, flat roads and good > > air!
> > > ?
> > > Lyle
> > > --- In
> > anzhonda600owners@ yahoogroups. com
> > ,
> > wrote:
> > > > Hi all;
> > > > I
> > have to wade in on this one.
> > > > First, I drive my
> > Honda 600's at 65 to 70 all the time. Then too, I
> > > > have and use
> > oil coolers on my cars. And, I have no problems. Yes, there
> > have been people that chose to drive across parking blocks and done some > > off > > > > roading (I think) and knocked the hose off, causing all the > > oil to come out.
> > > > But this has never happened to me, and I know
> > of a number of others that
> > > > have not had this problem. The best
> > part is that you add more oil to the
> > > > system, maintain constant
> > running temp and you can attach oil pressure and
> > > > temp gauges to
> > monitor your engines operating temp.
> > > > Second, the
> > Honda 600 has two transmissions, a full synchro and a > > > > constant.
> > Each has their own speedometer gear. The full synchro has 16
> > teeth, the constant has 15 teeth. Either will fit in either > > transmission.
> > > > So, if you want your Honda 600 to look like it's
> > going faster by the
> > > > speedometer, then put the Constant gear (15
> > teeth) into the full synchro
> > > > trans. Your speedometer will
> > display faster speeds at a lower RPM, without
> > > > going any
> > faster.
> > > > Third, 90 Mph in a stock Honda 600 is a
> > dream or the hill is very steep
> > > > and you have the clutch in.
> > Even if you have 1.0 mm over pistons, reground
> > > > the cam and put
> > the larger carb on the car using the angle port head with > > > > dual > > exhaust, your Honda 600 will not pull 90 mph. The physical
> > requirements are not available at the points. Both cylinders fire at > > the > > > > same time, this makes it physically impossible to make RPM > > high enough to > > > > move the full synchro transmission with stock > > wheels and rims to do more > > > > than 85 mph. The points only advance > > so far, which is when the RPM's reach > > > > around 7200, the points > > move past the rotation of the advancer assembly > > > > (lobe) causing > > the points not to open. The engine stops running at that > > > > point > > not reaching 90 MPH. Do the math, and I don't mean the new math.
> > > Now, if we could get one of the more enlightened Honda 600 owners > > to > > > > make up some electronic ignition systems for us, the dream > > will be reality.
> > > > Bill
> > > > -----Original
> > Message-----
> > > > From:
> > 2cylinderhondas@ yahoogroups. com
> > > [mailto:
> > 2cylinderhondas@ yahoogroups. com
> > ]On
> > Behalf Of Greg Hahs
> > > > Sent: Friday, November 09, 2007 10:39
> > AM
> > > > To:
> > 2cylinderhondas@ yahoogroups. com
> > > Subject: [2cylinderhondas] Re: 90 mph in a 600 sedan
> > > > Just got back from a little drive to see what it
> > does in all four gears.
> > > > 1st up to 20
> > 2nd up to 45
> > > > 3rd up to almost 60
> > > > 4th didn't try
> > going any faster as I was in a 50 mph zone.
> > > > This
> > car really runs great! I'll take Garmin with me next time to
> > double check.
> > > > Greg
> > > > ---
> > In
> > 2cylinderhondas@ yahoogroups. com
> > ,
> > "Kathleen" wrote:
> > > > > When I
> > lead a group of 600's to the Japanese Classic Car Show in 2005,
> > > I was going 60MPH in my Coupe. Everyone was keeping up just fine, > > but > > > > > when we got there, ALL FIVE of the Sedan drivers said > > I was going 70 > > > > > or more. Knowing that my speedometer wasn't > > THAT far off, I borrowed > > > > > a GPS, and verified that my car > > was going exactly 60 and 65 when my > > > > > speedometer said so.
> > Maybe you should all go borrow a GPS and THEN
> > > > > tell us how
> > fast you can go.
> > > > > I've never gone over
> > 80, which was red-line back when the car and I
> > > > > were a lot
> > younger. That was with a stock engine and my parents in
> > the car (and probably downhill). Maybe it could have gone faster, > > but > > > > > I'm a coward.