Max EGT temps on 2.5L?
Anyone know whats the max recommended EGT temps on a 2.5L with uprated internals, water injection and 440 bhp?
All pipes including down pipe has wrap so might increase temp readings. |
Depends on at least the following:
Fuel Piston clearance Location of measurement Exhaust valves How long for? Can the manifold and turbo take it? I would suggest to stay below 950 C at the collector. |
Stay well below that, no more that 900 deg C absolute max if on std valves
Bob |
At 940 DEG C for more than a few seconds and you stand to loose a valve on an STi 5/6 head.
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Cripes, I've had over 900 before and seen 935 ish on top gear run on M5 - will get this sorted asap with Bob so setup spot on. :eek2:
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Prolonged WOT with not enough fuel is what kills Scoobs, that and very high charge temperatures from top mount intercoolers, even uprated ones.
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Bloody hell, confirms my map isn't good enough for setup at present. Glad I've got an EGT sensor and asked the question (900+ looked very high to me). Wont be booting her again till Bob's done his magic.:(
I've got front mount with auto water spray and water injection - hate think what it would of been like without that! |
Ah, found an issue which might of been the cause of EGT temps...an amul valve I have fitted between the waste and solenoid was leaking boost, it was still shut when it should be but a bar + of boost would make it flutter open. Removed and now no boost leak to atmo. This made boost at peak a little on the wild side (spikes).
EGT temps better and not in the danger level...!:D |
Shocking news from Bob :notworthy, looks like my car is running lean :( - would explain the misfires etc :cry:
Just sorting a few things and will then have remap done for final time at BR :thumb: |
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