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Hey, engine builders, I need some guidance. 120-130 1966

uid 37336's pic
posted by  B20Paul. on  Mon Oct 8 06:41 CST 2007
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last visit: Mon Oct 20 10:54 CST 2014
[RELATED]

Have you actually done just a balance alone as a comparison?

The thing with 4 bangers is that because all the pistons are stopping at the same time at TDC & BDC, that they are never truly balanced until you fit balance shafts to them.

I've done a few 4G54 2.6 litre Mitsubishi's, they have a balance shaft that Porsche borrowed their patent for to make the 3 litre 944 work. This is the funny part, to make the 4G54 go, you take the balance shaft out & replace it with a dummy shaft... It saves a few HP & stops the block from cracking around where the balance shaft lives.

Unfortunately, I got spoiled by driving a B30 around for awhile, after that, balanced B20's are rough & stock ones are really rough.





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