r1_pete
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| posted on 18/1/16 at 04:08 PM |
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Throttle body heat insulation material
I need to make a heat insulator to go between my plenum and throttle body, for 2 reasons, 1 it'll help prevent heat soak to the IAT, and 2,
it'll give me a touch more clearance.
I need something about 10mm thick, can anyone help with what material I need and any UK suppliers.
Cheers.
Pete.
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theduck
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| posted on 18/1/16 at 05:41 PM |
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PTFE would be ideal.
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monkeyarms
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| posted on 18/1/16 at 06:29 PM |
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Nylon or POLYPROPYLENE ect
http://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2050601.m570.l1311.R5.TR6.TRC2.A0.H0.X10mm+plastic.TRS0&_nkw=10mm+plastic+sheet&_sacat
=0
[Edited on 18/1/16 by monkeyarms]
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se7ensport
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| posted on 18/1/16 at 07:01 PM |
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Try these guys http://www.ferriday.co.uk/thermal-products/
It worked out about £60 for my Duratec inlet manifold
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gremlin1234
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| posted on 18/1/16 at 10:49 PM |
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once upon a time they used asbestos for this, very good for the purpose, but later found to have significant disadvantages.
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coyoteboy
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| posted on 19/1/16 at 12:06 AM |
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Delrin, or maybe glass filled PTFE. Not raw PTFE or similar as it will have poor stiffness at higher temps.
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HowardB
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| posted on 19/1/16 at 08:37 AM |
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ptfe has a very high temperature capability, however it has low modulus and creeps very easily, that is why it is good as a thread sealing tape.
Subject to the expected temperature, assuming that it is below 120C then Nylon could be used. Acetal/Delrin would work too. Despite working for a
company that makes Nylon, I would probably be inclined to use a tufnol type material. A reinforced sheet laminate. This would be more stable and be
less likely to degrade over time.
If you want some nylon drop me a PM I may be able to find some.
hth
Howard
Fisher Fury was 2000 Zetec - now a 1600 (it Lives again  and goes zoom)
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r1_pete
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| posted on 19/1/16 at 12:48 PM |
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Thanks for all the advice guys, I've done some googling using the keywords in the replies, came across a trend for using wooden spacers on V8
Carbed engines!!
Cotton phenolic sheet comes a close second to wood for thermal insulation, so I've ordered a £5 worth of Whale Tufnol, which seems have the
right characteristics reading the specs.
Thanks again.
Pete.
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nick205
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| posted on 19/1/16 at 03:53 PM |
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Thinking back, my 2.0 Pinto was fitted with a Weber 32/36 DGV carb and had an insulation plate between the carb body and inlet manifold. Not sure
what it was made of, but I kept it in place as I assumed it was meant to be there. Again working from memory it was brown in colour and appeared to
be fibrous in nature.
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wombat258
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| posted on 20/1/16 at 08:18 AM |
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+1 for tufnol. Nylons, delrin and teflon will relax with heat.
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atomic
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| posted on 22/2/16 at 10:01 AM |
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A Phenolic resin sheet eg Tufnol (ideally Glass Fabric Tufnol) is the correct product to use.
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r1_pete
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| posted on 22/2/16 at 11:30 AM |
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Thanks, yes I got an 8mm sheet of Tufnol, and made the spacer.
I've got the engine running now, and the Air temperature doesn't move as the engine warms up, just what I needed.
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