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Re: [T3] Update on fuel pump adjustment

On 21 Jan 2003 at 23:54, Steven Ayres wrote:

> JimA=>VW also changed the RPM where the
> => spec was met.
> If you check your copy, you'll notice that this is true, but not across the
> board. The RPM spec remained at 3400 for 113 pumps (Super Beetles, I guess)
> while the volume rose uniformly for all. Is there a spec reference as
> complete for Euro models? That would provide more satisfying data.

I would not expect Euro models to differ at all, in this respect, from US 

> => no idea why they thought it would be a good
> => idea to change the float valve sizes.
> Occam's Razor says this was likely necessary to the carb design, for
> instance to fit into the available space.  I'd like to be able to verify the
> valve sizes. Any clear ideas on how to go about measuring them?

Until I get one to take apart, I don't know. I had assumed that there was 
something that one could measure directly, or take apart and measure. How about 
the drilling down from the top into the body of the float valve; wouldn't that 
be the diameter of the valve itself? You could measure it with a caliper, or 
with drill bits/wire gauges.

Would a Solex beetle float valve screw into a Soles type 3 carb?

Jim Adney
Madison, WI 53711-3054

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