Re: [T3] HP Figures 65-73 (was carb conversion)

[Jim Adney <jadney@vwtype3.org>]

On 27 Aug 2003 at 18:40, Aaron Clow wrote:

> Which brings me to another question... Jake Raby talks
> of averaging 35mpg on his Type IV engine recently...

I hadn't heard this, and it seems really unlikely to me. Here we have a really 
similar engine, but with larger displacement, larger swept diameter in the same 
number of piston rings (I don't know about the stroke.) The larger displacement 
should give you greater pumping losses, and the larger rings would give you 
larger friction losses there (unless the bore is smaller...) so I just don't 
see how you can make this statement unless you're also doing something else 
which you could do to the type 3 engine, too, and get even better mileage.

Comments from those of you who already have type 4 engines?

-- 
Jim Adney
jadney@vwtype3.org
Madison, WI 53711-3054
USA

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