I have a new Rebuild?
How many foot-lbs to turn engine with no heads on it.

bwhitejr

I would be suprised if anyone has a spec for free spinning a engine. Are you concerned that it is too tight?

It should turn with ease - an ordinary ratchet (not something super long) on the center crank bolt without having to grunt should do it with no problem. Heck you could grab the dampner from both sides and turn it probably.

Or, if you don't have the big bolt in center of dampner, you can put in the 3 smaller screws that hold the pulleys to the dampner, insert a pipe or whatever you have handy (broomstick?) and it should work fine.

If you find that you have to lean on it or put your entire weight into it, something else is wrong you need to look at.

It takes between 5 and 7 foot lbs to turn it. No heads, pushrods, flywheel or lifters.

Sounds fine to me.

D/W

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If it ain't broke, fix it!

I have put all the components back on the engine except for the spark plugs (Fuel Pump, distributor, heads, pushrods, valve train, lifters all on). The torque wrench now says it takes 30-35 ft lbs of torque to turn the engine. Is this in the normal range for a new rebuild with performance springs and cam?

Thanks,

bwhitejr

Sounds about right

My first good motor required a very high amount of torque to break it loose initially, but would turn easily once it was first moved. It ran for a long time and made really good power.

My second motor would break away very easily and turn easily. It was always a pig on motor, but flew on the bottle.

Don't know that any of that means anything.

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