Basic Mods

[Pretzel]

Has heat soak got to do with the turbo heating up and then warming the air as it enters the engine, leaving less oxygen, therfore less bang?

<{POST_SNAPBACK}>

Sort of.... The compression of the air causes heat (A byproduct) that the intercooler is then trying to bring back down to ambient (By heat transfer to the air around it) Heat soak happens when the amount of heat the cooler can continuously dissipate is less than what it takes from the compressed air.... then the cooler heats up and is almost useless until it substantially cools down again...

[Ralph Wiggum]

Has heat soak got to do with the turbo heating up and then warming the air as it enters the engine, leaving less oxygen, therfore less bang?

<{POST_SNAPBACK}>

Sort of.... The compression of the air causes heat (A byproduct) that the intercooler is then trying to bring back down to ambient (By heat transfer to the air around it) Heat soak happens when the amount of heat the cooler can continuously dissipate is less than what it takes from the compressed air.... then the cooler heats up and is almost useless until it substantially cools down again...

<{POST_SNAPBACK}>

the air temp coming out of the turbo on a stock xr6t shouldnt be that hot because 6psi is well within the capabilities of the turbo. what u say about the intercooler and heat soak is spot on, autospeed had a great article a few months back about "intercooling" vs "heatsinking". they where saying that the average road car spends bugger all time on boost so the heatsink effect of the intercooler became more important than the on boost charge air cooling effect. ie good heat dissipation vs high flow. which comes back to the time after u have been thrashing the sh*ter out or you car then u slow down for a bit and get on it again and the powers down...heat soak....!! your coolers been working fine when your forcing air throught it flat out but when the air is travelling slower through the turbo and getting heated more by the red hot turbo then traveling slower through the cooler and transferring more heat than the cooler can dissipate it gets worse and worse.

makes u wonder with a road car whats more important...high flow or good heat transfer...?

does any of that make sense....

[Trough Lolly]

All depends on what power levels you want mate!

Stock injectors are only good for Approx 230-250kw's...

<{POST_SNAPBACK}>

upto 310kw on the MK-II...