Reducing Underhood Temperatures 101: M45, M35

[M4point5]

Wont work. Needs to be reinforced, 3 or 4 ply at the minimum. Think a silicone coupler for intake, turbo, etc...yet radiator hose.

Now, if I could find long enough silicone "couplers" so to speak WITH the right bends, custom hoses could be made.

[svard75]

Post #3 has been updated with "after" results. This is NOT including plenum and throttle body spacers, as I have yet to have these made. Results are pretty impressive so far.

What was the ambient temp? In the first round you posted it was 68.

[M4point5]

Was raining out and 58*. I will retest when the weather clears up and gets 70* to make another comparison. But 10* in ambient temp isnt THAT significant...unless we are talking a difference above 70 - 80 mark.

[Double E]

Battery was connected and I left the tb wiring connected. I opened it all the way up and cleaned.

But NOW I took it off since I took my plenum off and I am going to do the entire relearn procedure after everything is back together. The 45 has the same relearn procedure as the 35, correct?

Correct.

[Larz]

I found this on Ebay. Seems if you buy these 'thermal socks' (it would take 2 to fit our cars) you can protect the air in the pipe from engine heat. Do you think this is a' cool looking' gimmik? or could it actually help? Inexpensive but a great idea if it works. What do you lot think?

http://www.ebay.com/itm/RED-THERMAL-COV ... 923wt_1206

[M4point5]

I would want to know what it is made from...looks like cotton, which wont do a whole lot. Why not just wrap up the intake in a rag or shirt if thats the case. Glass or kevlar wrap is what would have some thermal insulating properties.

[DeanM45]

I found this on Ebay. Seems if you buy these 'thermal socks' (it would take 2 to fit our cars) you can protect the air in the pipe from engine heat. Do you think this is a' cool looking' gimmik? or could it actually help? Inexpensive but a great idea if it works. What do you lot think?

http://www.ebay.com/itm/RED-THERMAL-COV ... 923wt_1206

It may ** slow ** the absorption of heat but more than likely it will not. True, it is an insulator to some extent but that type of product is designed to hold heat in. The key to the intake system is to REFLECT the radiant heat. The "sock" will not do that.

[Larz]

Ty Dean & M4 for the replies. I wrote the seller and asked what about it's contruction, but never got a reply. I suspect it's probably nOT a cheap gimmik, but I also suspect it's not very effective either unless it has a true thermal wrap under that sock-type exterior.

[svard75]

Lol on the thermal sock. I really doubt for $8 it would have any heat resistant properties. Any material that can absorb heat will eventually become hot itself. The best heat dissipating material is alloy with cooling fins. If a cover like that existed I might try it. The thing is this still wouldn't prove much difference because if the car is moving the air will remain the same temp or close to the ambient temp. It's when you're stuck in traffic for long periods of time that heat soak plays a role, but once you get moving it doesn't take long for the air to come back down. What you were measuring was the temp of the parts. What you should be measuring is the IAT while moving at the same speed and same ambient temp plus a wideband sensor to see the mixture after combustion. Do you have an OBD2 monitoring kit? I would buy one. It's about $130 with recording software. Then perform these tests again.