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Re: what is the purpose of the solder during the detox procedure

To: Bill Saidel <>
Subject: Re: what is the purpose of the solder during the detox procedure
From: Bill Schooler <>
Date: Sat, 07 Aug 1999 10:06:07 -0400

The idea is to solder the poppet valves closed.  The throttle disc
should move after this step.  The only difference is that the poppet
valves no longer open.

You can also accomplish the same thing by replacing the throttle discs
with those from an earlier carb which had no poppet valves.


Bill Saidel wrote:
> The following is a pragraph in Twist's tech notes 31, on detoxing
> Turn the carb upside down and allow all the gasoline to escape from the
> vent tube. Place the carb into a vise (careful!) and hold the throttle disc
> open with a screwdriver wedged into the external linkage or cam. The
> overrun valve should be positioned with the spring upwards.
> "Use a small propane torch, heat the underside of the throttle disc, flow
> some soldering flux onto the disc topside, and finally flow a generous
> amount of solder into the base of the valve (under the spring)."
> WHAT IS THE PURPOSE OF THIS STEP? AND Should the disc still move after this
> process?
>  Allow this to cool before removing from the vise. Ensure that there is no
> solder on the edge of the throttle disc -- if some has crept there, scrape
> it away with the edge of a screwdriver
> tia,
> Bill
> **********************************************************************
> Dr. Bill Saidel
> Assoc. Prof.                      Vocal phone   (609) 225-6336
> Department of Biology             FAX  (609) 225-6312
> Science Building                  email:
> 315 Penn St.
> Rutgers, the State University of New Jersey
> Camden, NJ 08102 -1411
> "Between the approximation of the idea and the precision
> of reality, there is a small gap of the unimaginable."
> Milan Kundera - "The Unbearable Lightness of Being"

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