Insulating material

[Mr Revhead]

I need to insulate the intake manifold from the cylinder head. Steel head, alloy manifold and the heat transfer into the manifold is shocking! Stopping that transfer would lower my intake temps quite a bit I think.

So, I want to make up a thin sandwich plate to go between the two. Moving the manifold out 10mm or so won't matter, I will just extend the top intercooler hose to make it up.

Any one have any ideas of what I can use to make it?

[Bling]

Some tin covered in that gold foil Bazda sells?

[whynot]

Gold foil would be good for radiant heat not conducted heat. There are thermal gaskets on trade me which some suppliers could make to order. Usually made of a solid plastic or similar.

[JZCrazy]

Have got one of those Gizzmo thermal gaskets on the 1JZ, don't ask me if it works cos I don't know.
The radiant heat is a problem, hot days etc.

[Bling]

Gold foil would be good for radiant heat not conducted heat.

I somehow misread his post, you're right it would be no good.

[Mr Revhead]

Shit, I was really looking forward to blinging it up!

[limbo]

I emailed Gizzmo a while ago about them making me a thermal gasket, they said they would make one if I sent them a cad file of what I wanted. I made the file just haven't sent it to them yet. Dang that was 8 months ago...

Lance Streeter <nzsales@gizzmoelectronics.com>

[gepsk8]

Gizmo gasket work great, got one on my corolla. Drop temperature by 30degrees. Can now touch inlet manifold after driving.

[Mr Ree]

Yes, the phenolic gaskets have been well proven to drop IM temps, so a worthwhile investment for anyone suffering from terrible heat soak.

And making a heat shield out of that ACL formable heat shielding, then covering it in the gold reflective material will help too.

[Mr Revhead]

Cheers guys, will look that up.

Yeah I've got a heat shield between the turbo and i/c. That made a huge difference!

[GDII]

Gizmo gasket work great, got one on my corolla. Drop temperature by 30degrees. Can now touch inlet manifold after driving.

When you say 'after driving' what do you mean? I don't have a plastic spacer on my car (bone stock engine) but when I have just finished driving I can touch my intake manifold just fine. After a few minutes it gets heat soaked and I can't touch it. I put this down the air flow through the manifold but when the engine stops drawing air through it, it just absorbs the heat from the engine.

[Mr Revhead]

In my case, 4JB1-T Isuzu the I/c is cool to the touch, and the manifold is hot. The closer to the head you touch the hotter it is.
On my old AW11 s/c with a Subaru w2a I/c the intake would be cool after a drive.

[gepsk8]

Gizmo gasket work great, got one on my corolla. Drop temperature by 30degrees. Can now touch inlet manifold after driving.

When you say 'after driving' what do you mean? I don't have a plastic spacer on my car (bone stock engine) but when I have just finished driving I can touch my intake manifold just fine. After a few minutes it gets heat soaked and I can't touch it. I put this down the air flow through the manifold but when the engine stops drawing air through it, it just absorbs the heat from the engine.

If I take my car for drive for over 30mins, then pull over the side of road pull your hand on inlet manifold, use it support yourself as look at rear of engine bay. You won't it to hot. As mine is not as hot. Was 30 degrees different with heat gun.

[whynot]

I dont have a thermal gasket on my corolla as the throttles have a plastic gasket from the factory but I covered the plenum with refrigeration insulating foam to try and keep the heat out. When im driving the air temp is normally less than 4 deg above ambient and it takes a 30min drive from cold before the w2a cooling system even starts to warm up.

[jondee86]

The BEST thermal gasket material is pure virgin teflon (PTFE). Bit
spendy though... I got two head/manifold gaskets waterjet cut from 1/8"
thick teflon and from memory they cost over $100 each... and I got a deal
on the teflon !! Phenolic is a cheaper option.

Thermal gaskets work by slowing down the rate of heat transfer from the
head to the manifold. So heat flow into the manifold is reduced, but heat
transfer away by the intake air remains the same. Thus, the equilibrium
temperature of the manifold is lowered.



Cheers... jondee86

[evil_si]

Send our cad file to one stop cutting and get them to quote supply and cut, They will have something suitable in stock