PTFE inlet manifold gasgets??!!??

[samol]

Quick question.
Has any one heard of ptfe inlet manifold gasgets, about 5mm thick, ptfe is a good insulator and therefore stops the inlet manifold heating up from contact from the block. The result being colder air getting sucked into the engine...
Does this work?
Has anyone heard of this before?

Cheers Ant

[GreenV8S]

I tried PTFE sheet for a valley gasket liner and it was hopeless, a PITA to work with and even when it is clamped up it tends to move around a lot. Phenolic sheet is far better for that application.

[HarryW]

Where can you get this Phenolic sheeting Peter, tried to make a plenum spacer a little while back with 10mm nylon which increased the volume of the plenum nicely, but it lost power , which I think was the air blowing across the top of the trumpets. Might try the phenolic as an insulator only this time if its thinner and easier to work with .

[eliot]

Yes, where can you get Phenolic sheet from - I want to redo my spacer too. (currently using 1" plastic, but melts slowly over time)

>> Edited by eliot on Monday 16th January 22:54

[GreenV8S]

I get mine from a local plastics stockist in Northampton who supply all sorts of plastic cut to size in various grades and thicknesses. I expect you'll find something similar local to you.

If you're fitting a thermal barrier, you only need a couple of mil thickness - more than that doesn't really make much difference. It's worth putting insulating washers under the bolt heads too if you're serious about it, heat transfer is roughly proportional to clamping load and you get a surprising amount of heat conducted down the bolts.

[eliot]

GreenV8S said:

I get mine from a local plastics stockist in Northampton who supply all sorts of plastic cut to size in various grades and thicknesses. I expect you'll find something similar local to you.

Who's that then, as I live just down the road.

[GreenV8S]

eliot said:

Who's that then, as I live just down the road.

Ryan Plastics.

[victormeldrew]

I noticed some of these on the web, company in Tamworth I think it was, producing spacers for the Rover V8 only so far.

Magnaparva


>> Edited by victormeldrew on Tuesday 17th January 13:49

[GreenV8S]

Highly recommended.

Edit: Only had two words to spell ffs.

>> Edited by GreenV8S on Tuesday 17th January 18:17

[HarryW]

victormeldrew said:

I noticed some of these on the web, company in Tamworth I think it was, producing spacers for the Rover V8 only so far. Magnaparva >> Edited by victormeldrew on Tuesday 17th January 13:49

Have to wait for the 45mm version then...........

[Gringo2006]

They use these on Scoobies alot iirc, have a look on www.scoobynet.co.uk
I saw someone advertising on there the other day.
HTH

[samol]

I take it from the responce it works then!!!