[Land-speed] Land-speed Digest, Vol 2, Issue 210

Ulrace at aol.com Ulrace at aol.com
Mon Jul 14 14:37:46 MDT 2008


In a message dated 7/14/2008 2:04:27 P.M. Eastern Daylight Time,  
land-speed-request at autox.team.net writes:

>  From: "drmayf" <drmayf at mayfco.com>
> To: "LSR"  <land-speed at autox.team.net>
> Sent: Sunday, July 13, 2008 9:23  AM
> Subject: [Land-speed] Need a Shade Tree Repair  Method..
>
>
> > Yesterday after running the SUnbeam fora  few minutes I noticed that it
> > was dumping out the wastegates port  at idle. Since I have had some
> > issues with wastegates before I  started isolating the problem. I found
> > it thankfully in only one  of the gates. And fourtunately the easiest one
> > to remove. The  diaphram that moves the valve open and closed has a small
> > hole in  it. That releases the air from the bottom side to the top side
> > of  the diaphram causing that one to be essentially stuck closed all the
>  > time.. That same plumbing system controls the other unit as well.
>  >
> > So the removed the offensive unit and tore into it. The  piston inside
> > has a sharpmetal edge that did the evil deed as the  vlve opened and
> > closed.  The real issue is that this is a  chinese unit (yeah, I am a
> > cheap SOB, so get over it) and  replacement parts are non existent. I
> > have ordered a couple more  gates and they should be here in a week or so.
> >
> > The  question is, do any of you have any iideas on how to repair a red
> >  silicone material or know of any items like high temp tape that would
>  > work to plug this small hole? If the darned this was made of rubber  like
> > a bicycle inner tube, I would just use a patch on it. But is  a silicone
> > material and hardly anything really sticks to  it.  And this area gets
> > hot so it needs to be capable of  around 500dF or so.
> >
> > I just need suggestions or  methods to repair this, so don't get crazy
> > and tell me I am a  dumb sh*t for buying this junk to begin with, yada,
> >  yada...
> >
> > Any helpful ideas out there?
>  >
> > mayf





Use the red high temp silicone that the part store sells. It's made to seal  
catalytic convertors. We use it on headers all the time in place of gaskets.  
Worth a try. I've used it on jag carb diaphragms.
 
bob



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