Vac Hoses & Boost Guage Problems

John Sims · Jan 25, 2004

Sorted my Boost Guage problem. It wasn't the guage at all it was the vac pipe. It seems to have been in contact with something hot collapsed, cooled and sealed its self. See pic below.

Whilst obviously more than a little concerned that something under my dash is hot enouge to melt the tube, I have repaired it and rerouted slightly to avoid metal boxes and things. I'm just hoping it was a freak occurance due to enthusiats use of the heater trying to dry out the rear duck pond.

John Sims · Jan 25, 2004

On the subject of vaccum lines may I "commend to the floor" Andrews/Lindsey Racing Purasil tube kit. Even if you don't do the whole of your engine it is great stuff to have in your tool kit for repairing vac lines - of which we seem to have hundreds.

You can cut the original tube and slip the purasil tube over the end to make a join - as shown below - and saved me a lot of hassle in repairing my boost guage line.

John Sims · Jan 25, 2004

......looks nice and tidy in the engine bay as well.

Why am I saying this, most of you have done this already [

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Fen · Jan 25, 2004

Nice, tidy and clean engine bay there, Mr. Sims.

John Sims · Jan 25, 2004

Nice, tidy and clean engine bay there, Mr. Sims.

Thanks Fen,

It is one of the few places were a seven year old and a wife can't get involved and make it untidy. Santuary, sanctuary!

Guest · Feb 14, 2004

ORIGINAL: John Sims

On the subject of vaccum lines may I "commend to the floor" Andrews/Lindsey Racing Purasil tube kit. Even if you don't do the whole of your engine it is great stuff to have in your tool kit for repairing vac lines - of which we seem to have hundreds.

You can cut the original tube and slip the purasil tube over the end to make a join - as shown below - and saved me a lot of hassle in repairing my boost guage line.

Hey John i have my purasil kit ready to rock with the gauge install, when you cut the origional tube and slip into the Purasil (as pic) how did you seal the ends?

p.s. i got the black. The blue is way too camp![

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John Sims · Feb 14, 2004

The blue is way too camp!

So, you insult me and you want my help! [

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The purasil has a strange sticky surface so provided the tube you are sleeving is slightly wider than the bore of the Purasil tube, and provided you push the Purasil over the inner tube by about 2", it achieves a seal all by its self.

If the original tube is too fine (ie its outside diameter is less than the bore of the Purasil tube) then you could have problems. If this is the case you may have to try flanging the original tube.