H compression standards

sgtbull · Nov 21, 2011

Can anyone advise what is the optimal compression for a gasoline H? Mine is running about 140lbs on all 4, cold w/ no oil added. (all plugs out, throttle and choke open, fresh battery)
That seems pretty decent, but I'm just wondering where it would be new.

Allan in NE · Nov 21, 2011

Probably 'bout 145.

Don't worry 'bout that "adding oil" thing. One of the dumbest and 'waste of time' actions that ever came down the pike.

It either has compression or it doesn't; simple as that. :>)

Allan

sgtbull · Nov 21, 2011

thanks... sounds like either way I don'thave to worry about it.

sgtbull · Nov 21, 2011

thanks... sounds like either way I don'thave to worry about it.

CNKS · Nov 21, 2011

125 with normal pistons, about 145 with fire craters. You have no problems.

gene bender · Nov 21, 2011

I agree it either has good compression or not warm or cold or whether the throttle is open all we need is a reading of all cycls close to each other.

JRSutton · Nov 21, 2011

exact compression doesn't matter (within reason). What matters more is that they're all about the same.

If you had 145, 150, 140, and 90 you'd probably want to take a look at what's going on in that last one.

Where if you had 90, 90, 90, and 90 - you'd probably be doing just fine.

H compression standards

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