Ash content corrolations to Pre-Ignition

NoDOHC · 04-02-2009, 09:19 PM

tell me if i am wrong, but wasn't that being compared to ATF and found to have half the wear?

If I interpreted the data correctly, 19.6 um/ 2.5 hours with only 1.5 mm allowable wear (8.0 mm stock, 6.5 mm allowed) gives about 200 hours (12,000 miles) before wear becomes a problem on a premixed rotary (which I really don't believe). Granted, this is full-throttle useage, but that number seems out there a little.

I have seen 150,000 mile rotaries with 6.9 mm of apex seal left.

I am not sure that these are 2.5 hour cycles.

04-02-2009, 09:19 PM	#10
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 17	tell me if i am wrong, but wasn't that being compared to ATF and found to have half the wear? If I interpreted the data correctly, 19.6 um/ 2.5 hours with only 1.5 mm allowable wear (8.0 mm stock, 6.5 mm allowed) gives about 200 hours (12,000 miles) before wear becomes a problem on a premixed rotary (which I really don't believe). Granted, this is full-throttle useage, but that number seems out there a little. I have seen 150,000 mile rotaries with 6.9 mm of apex seal left. I am not sure that these are 2.5 hour cycles. __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)