symptoms of heat soak?

[s2driveruk]

anybody using exhaust wrap or similar and any pro's/con's as I think this has to be the single easiest way to reduce uner bonnet temperatures.

[Jamo]

Tekkno and a few other users have had the exhaust manifold, wastegate and downpipe ceramic coated to try and help keep down the temperatures.

On a side note even though off topic, do you think the engine bay would run cooler without the under tray?

[s2driveruk]

i've never run an undertray and I think the short answer is no its doesn't - actually there was some talk of it running cooler and affecting performance/economy but i can't see anything in real life.

I'd guess the biggest issue is actually venting the heat, the UR sport quattro had plentof vents in the bonnet to release heat and i think that bar the vents below the windscreen thats about it on our cars...

I'm just looking at some exhaust wrap, decent blanket insulation for the intake and soemthing decent to cover the filter

Actually, how much is an RS" airbox

[virtuapete]

Check this out.. it might be of interest to you regarding getting a cold air intake charge into the car

http://www.tdif.com/phpBB2/viewtopic.php?t=221#2265

[Greg_S]

can you post some details since it requires a logon to see that link

[virtuapete]

well you can sign up for free and see everything (i know thats a ballbreaker, but just a friendly suggestion )

Basically I am in the middle of sending out a couple different stress/heat modeled components for protoyping which will provide a cold air, ram air intake for our cars. Versions include N/A apps where it bolts directly to the MAF or in FI apps directly up to the turbo, encasing the high-flow filter with a material that rejects heat replacing the entire airbox all together and routes a direct path of cold air into a scoop on your grill (hood or bumper, hasnt been determined yet). This not only gets cold air to the intake/turbo but starts to force air in the faster you are going, increasing throttle response ot turbo response. I have started to post some pictures of the model work and more will be coming... basically all info will be posted there and if you want to keep on top of it, you'll need to check the thread

[stevieyid]

I replaced my cone filter with my orignal air box and no problems what so ever and the car goes a lot lot better. It must have been heat soak. I will have to make myself a heat shield before i put the cone back on thats if i put the cone filter back on.

[QuattroFever]

I have just fitted a Quikshift filter. Im having the same problem feels really slow after sitting in traffic for a while. whilst start stopping i get slight hesitations and if i pull off from lights it just feels useless for first 2-3 mins.

Pondering a heatshield design at the moment. Im thinking: heat proof soldering/welding sheet sandwiched between two sheets of hammered or grained copper or alu! copper being the better option but also ugly sister of the two!!

[meep]

I have the exact same symphtoms. It was really bad when we had outside temps of 30 degrees celsius a couple of weeks ago. now its just a slight hesitation sometimes. Still useless when i have been sitting in traffic though. I have a heat shield though and a hose from teh frotn of the car to the filter. Ill se if i can find a pic.