super 77 compression???

56oliver · Feb 27, 2015

I also posted this on the Oliver forum but I figured I'd ask here. Do any of you guys know how much compression a super 77 should have? It is a gas tractor also...

Thanks,
Jake

J. Schwiebert · Feb 27, 2015

I answered you on the Oliver site. J.

donjr · Feb 27, 2015

According to my book, the stats on a 77 engine are as follows:

B&S-4.50x3.75
Rated RPM-1600
Comp. Ratio- 7-1 (Gas), 16-1 (Diesel)
Displacement- 216 cubic inches

LP-Always · Feb 28, 2015

3.5 bore cr 7.3 1957 and after

donjr · Feb 28, 2015

OOPS- fatfingered that sucker. Anyway, should likely read around 90-100# on a guage...

super 77 compression???

56oliver

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J. Schwiebert

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donjr

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LP-Always

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donjr

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