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B21F cylinder head machining

.020" is max spec to remove.

.060" is a good bit off, will raise the compression ratio a noticable amount. Friend's b21f did this to acheive about 10.5:1 CR on the flat top pistons. Made 113hp/113lb-ft on the dyno with K cam, header, and mild port work on the head. For comparision, my stock b230f put out 86hp/118lb-ft on the same day.

.100" is borderline possible with the stock timing belt. One tooth shorter recommended.
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New B21F cylinder head machining
posted by  prendergast  on Tue Feb 7 11:40 CST 2006 >


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