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compression ratio on b20b 120-130

posted by  blueb20 on  Fri Sep 10 08:11 CST 2010
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last visit: Thu Mar 7 14:14 CST 2013
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hi guys,
i'm restoring a 70 model 122s b20b.
i'm planning to install ipd's isky vv71 cam c/w the hi revving kit, double wound valve springs.
the block will be rebored 20 thou oversize & the head will be gasflowed. the su carbs will be replaced with vpd's mikuni carbs.
now, the std cr on the b20b was 9.5:1.
is it advisable to go higher say to 10:1 by machining the head & block?

thanks chaps






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New compression ratio on b20b [120-130]
posted by  blueb20  on Fri Sep 10 08:11 CST 2010 >


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