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Re: Solex Conversion Questions

To: datsun-roadsters@autox.team.net
Subject: Re: Solex Conversion Questions
From: Gordon Glasgow <glasgow@serv.net>
Date: Tue, 18 May 1999 22:33:55 -0700

CBAKER6231@aol.com wrote:

> Recently bought a parts car and replaced my SU's with the Solexes from the
> parts car.  The change raised a few questions.
>
> 1) The Solex Carbs do not appear to have a vacuum line connection (for the
> distributor).  I've plugged the vacuum line into a converted plug on the
> intake manifold, but I think the vacuum is too strong at that point.

That's correct. The Solexes weren't designed for use with a vacuum advance.


> 2) The Solex Carbs also do not have a place for the return line to the gas
> tank.  Just plug the gas line?

Yep. And put a fuel pressure regulator ahead of the carbs.

> 3) I'm slowly on getting them tuned (they sat for a long time without being
> used).  I assume the initial hesitation on hard acceleration calls for new
> accelerator pump diaphram?

Not necessarily. That's pretty normal behavior for Solexes. There's no choke
valve, so when you put the pedal down, the intake ports see atmospheric 
pressure.
Roll on the power, don't just hammer it, unless you're above 3000 rpm.

> 4) What is the likely cause for backfiring with hard deceleration (car was
> already doing some of this with SU's).

Deceleration? good question.

--
Gordon Glasgow
Renton, WA
http://www.gordon-glasgow.org



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