plenum heatsoak excessive

[Guest drift_me_silly]

On an R32 gts-t excessive heat soaked up by the plenum is being experienced. i've suggested reflective (metallic) heatwrap to combat the problem, along with a vented bonnet. The intercooler is taking teh temps down but the plenum is no doubt raising them. any suggestions?

[blind_elk]

The plenum is supposed to be warm, that's why its got coolant flowing thru it.

I doubt the intake air is hanging around long enough to extract any heat from the plenum.

[Guest drift_me_silly]

blindy....it's pretty damn hot. as in egg boiling.

[predator]

I doubt the intake air is hanging around long enough to extract any heat from the plenum.

If it passes through a hot space the air temperature will rise..but like elk was saying it only gets sucked in when the throttle body is open, so its probably not enough to cause massive heat soak.

Have u wrapped all the piping from the exit side of the intercooler to the actual plenum? I need to do that to mine, as i get pinging after high temps, even though my FMIC is quite large. As the cool air from the i/c passes back across near the engine, it can start to heat up again. Other solution is custom plenum which takes the intake direct from the front without crossing over the engine.. if u want to spend the money.

[Sydneykid]

Hi Guys, the air speed throught the plenum is too high for any heat transfer to occur.

[Guest INASNT]

Originally posted by Sydneykid

Hi Guys, the air speed throught the plenum is too high for any heat transfer to occur.

yes as skydneykid said the air would have to be moving real slow for there to be time for heat transfer to occur between the air and the pipework/engine heat!

[Gav]

Sydneykid - according to the PFC in my GTR, the air temp is a lot higher (at times up to 60 C) when the IC outlet is cool to touch.

One possibility is that sender may actually be heating up by conduction from the manifold. How far does the temp probe go into the air stream?

[Guest Boxhead]

drift me silly is at my place atm, and wants to say the following =

the air moving quickly theory makes logical sense as does the exit intercooler to throttle body wrap, does anybody know if there is any drop in plenum temperature if a vented bonet is applied? and if so, how much?

[BOOSTD]

Boxhead- just reading your signature block, here is one for you

my car pulls as hard as a catholic school boy

[SlowGTS-t]

I thought about that too. I think the best place to put the temperature probe is to stick it to the fins at the outlet side of the intercooler. I think putting it anywhere else would make it tend to give you the temperature of the pipes and not the air temp.