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Thread: Which Bottom end

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2011-03-04 21:56:08
Which Bottom end
Which bottom end is better the high port or low port.
2011-03-04 22:13:23
Pretty sure they are the same. Just different heads. Unless your talking about the RR motor.
2011-03-04 22:16:40
no just a standard 96 g20 de.
2011-03-04 22:52:59
same, lowport head flows a little better
2011-03-04 23:51:15
yeah, lowport flows about 5-7 hp better with just using cams from a highport.

I wonder which head is easier to port/polish and which actually flows better after its ported/polished.. i'm sure a valve job would yeild similar gains on both heads..

oh wait, this is a bottom end thread.
2011-03-05 00:47:18
1991-1999 G20s all have the same bottom end. The heads changed during that time span. 91-93, 94-96, 99(same head slightly different intake manifold). From 2000-2002 the USDM sr20s came with the RR motor, which has no girdle and a 4 counter weight crankshaft.

I'm assuming you mean better for turbo? If it was me I'd go with the early blocks as they come with the main bearing girdle.
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