Quote:
Originally Posted by Turbo E320
What are your EGTs? That turbo is kinda small for that engine. You need something at least 60mm's with a .63 turbine housing(t3) or, preferably, a .68(T4) housing.
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Didn't log the EGT-s on the runs because I couldn't get the MS to log them
, however I have logged them previously @ 26 degs advance (zeitronix software) and they were around ~750 - 800 C (1380 - 1470). The turbo is a ebay T3(.63 A/R)/T4(.50 A/R) which according to the seller is rated for 350whp, calculated compressor trim is 44 (should flow ~ 35-37 lbs) . I agree that it is on the small side compared to the turbos some people use on this motors, but the goal is to make a fast and nice daily driver i.e. good power across the rpms combined with quick spool. Having said that I don't think I have exceeded the capacity of the turbo since it pulls very hard all the way to the rev limit. Also there was no knock at 26 deg. so I could have gone higher with the ignition timing, might try 28 - 30 deg. @ 0.5 once the snow has melted
. Hope to have it running @ 1 bar soon and hopefully put it on a dyno once its road tuned @ 1 bar.
P.S. anyone have g-tech gtp files of a 300E/300E turbo which we can compare ?
P.P.S and of course I'm considering a larger turbo but that's for a later time ..