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Old 02-03-2016, 12:12 AM   #61
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ARP Sell a larger washer, I would not recommend using the stock one as its thin.
ARP washers are about 3mm thick.
3 years of pushing water gone now once I did this. 2bar on e85 all day. 520 wheel HP.
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Old 02-07-2017, 08:29 PM   #62
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Finally tuned the car again on a different dyno, made 360kw at the wheels at 32psi if dynos read the same made a 65kw increase, didn't push any water, also did a [email protected] 1/4
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Old 02-07-2017, 08:39 PM   #63
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Nice job.
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Old 02-07-2017, 10:26 PM   #64
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FYI, ARP changed the spec on the washer included in the standard head stud kit at some point last year. I had started to re-use the OEM washers when I opened an ARP package and found a much larger (OD) washer. They also revised the recommended torque spec down from 80ft.lb to 65ft.lb.
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Old 02-08-2017, 06:42 PM   #65
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Quote:
Originally Posted by Savington View Post
FYI, ARP changed the spec on the washer included in the standard head stud kit at some point last year. I had started to re-use the OEM washers when I opened an ARP package and found a much larger (OD) washer. They also revised the recommended torque spec down from 80ft.lb to 65ft.lb.
FYI if its of use, our heads are at 80-90ft/lb, anything less when going for 5-600BHP, gasket issues.
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Old 02-08-2017, 09:19 PM   #66
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Quote:
Originally Posted by JRCOZY View Post
FYI if its of use, our heads are at 80-90ft/lb, anything less when going for 5-600BHP, gasket issues.
Hmm. I'll be testing this pretty soon, mine are at 65 ft*lbs with a calibrated wrench and I'll likely be over 500whp. I hit 490 something whp last year and didn't lift a head, but should be well above that with my new setup.
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Old 02-09-2017, 01:24 PM   #67
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Pmax is directly related to ignition timing. Enrichment has a negligible impact on Pmax. It is common that Pmax will increase as you decrease load from WOT (at the same engine speed) simply due to the additional IG advance.
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