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Re: 2.5L Upgrade Results (archive)

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Posted by Gustave on June 07, 2001 at 12:08:45:

In Reply to: 2.5L Upgrade Results posted by Pat on June 06, 2001 at 18:16:08:


I can't wait to take it to 6500 rpm or so. I'm not going to redline with the lumpier cams just to be safe. Maybe after I get better valve springs when I do the top-end I'll see some time at redline.
Pat
'89 M3 AlpineweissII (it's alive!)

Pat, congratulations on your rebuild.

I would encourage you to go ahead and redline that engine once it's broken in (1000 miles at least). Even the 7800 RPM limit on the Jim C chips will be absolutely no problem for the valvetrain with the E2 and E3 cams. Those cams are really quite mild compared to true racing cams. Even the Schrick 284 is still really just a hi-po "street" cam.

If you don't redline it you're missing out 8^)

Also, the E3 block is identical to the standard block other then the 95 mm bore and the machined pads for the oil squirters. I know - I inspected one myself. Still, the smaller bore will give you an added margin of safety. Though the S14 block at 95 mm is not really known to crack unless you put a rod through the side of it .



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