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Re: [spitfire-enthusiast] don't trust your SU's - wow!

To: spitfire-enthusiast@yahoogroups.com
Subject: Re: [spitfire-enthusiast] don't trust your SU's - wow!
From: Nolan Penney <npenney@erols.com>
Date: Sat, 17 Mar 2001 22:24:44 -0500
Might I suggest getting the books from Burlin fuel systems?  Then you can
make sense out of your mish-mash of parts.  It greatly helped me in putting
together my various parts of SU carburetors into a working and matched set.

Paul Tegler wrote:

> After disassembling 6 pairs of HS carbs, I've found that
> even
> the same cast part (number cast into part) IS NOT THE SAME.
>
> anyone having carb... running.... stumbling.... vacuum...
> problems, beware.
>
> I've found two sets now with the same part numbers,
> and they are not the same. One has a carb 'ported' vacuum
> tap, one doesn't and they have the exact same number on
> them.
>
> The inside 'port' that feeds the jet pipe at the bottom of
> the float bowls
> vary as well. I've found one is a small round hole rather
> than the
> 'square' sediment trap everyone is use to.
>
> The dashpot pistons... same story.  The little dumbbell on
> the piston
> is different lengths as well (the little free floating piece
> on the
> end of the piston.  8103 and 8114 are suppose to
> differentiate
> this, but not so.
> This allows one to let the piston move father than the other
> before
> real 'damping' kicks in....
>
> I'm bummed... I could go on and on.
>
> No wonder everyone has so many problems, when not knowing
> what you're starting with.
>
> Paul Tegler      ptegler@cablespeed.com
> www.teglerizer.com
>
> Paul Tegler      ptegler@cablespeed.com
> www.teglerizer.com
>
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