Re: [T3] 71 Oz Notch Pix

["Dan Hoopes" <dan@ewed.net>]

I'd love to see some pictures of the setup for the exhaust.

thanks

Dan Hoopes
'67 Square "Stanley"
Provo, Utah

----- Original Message -----
From: King, Robert <Robert.King@dsto.defence.gov.au>
To: <type3@vwtype3.org>
Sent: Sunday, December 19, 1999 9:10 PM
Subject: Re: [T3] 71 Oz Notch Pix


> Greetings,
>
> The exhaust is a 1 and 3/4 inch extractor system
> with a glass pack style muffler, but its not
> a glass pack.  A company (Redback) here makes
> baffled 'cylindrical' mufflers which are much quieter.
> Whole thing fits behind the rear valance and the
> tip you see is the exit pipeI welded to the muffler.
> Heater boxes are still connected (modified at inlet)
> because its my wife's
> car and she and the kids like the heat in winter.
> I can take some pix of the exhaust if anyone wants to see.
>
> The carby linkages are bent simply because I had too
> make them short enough after balancing
> the carbs (with linkages disconnected).  It took
> some time to set the carbs up and get the chokes
> etc etc working just right.  I have 'early' PDSITs
> and 'late' and my first choice (the early) were never
> quite 'perfect' no matter how much I fiddled with
> them (after rebuilding completely).
>
> Backfiring/popping and extractor exhausts
>
> I actually found the later carbs are sweet (after rebuilding).
> But the car was suffering from the 'popping' exhaust
> syndrome when changing down suggesting a lean mixture.
> But plugs were good - car was not lean while driving.
>
> I ended up blocking the idle compensation valve
> off and just using the idle mixture screw to adjust
> idle mixture.  My guess is this valve in the later carbs
> was a fix for US smog regs and its sole purpose is to lean out the mixture
> at idle.  While I know PDSITs 'transition' slowly to idle
> blocking off the compensation valve solved the popping
> problems on deceleration.  Might be something else to
> think about when fitting an extractor system?  No sign
> of the engine 'loading up' (being far too rich) at idle either.......
>
> Your thoughts?
>
> RobK
>
> http://www.pipeline.com.au/users/hoopty
>
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