How to turn V6 engine by hand

[Franco_boater]

Hello I have 4.3 V6, can anyone tell me how to turn the engine by hand?
I read using 27mm socket is dangerous, but why? In any car its ok to turn the crank by hand.
Looking forward for advice


Best regards

 

[Bondo]

Ayuh,..... Is the motor in the boat, with the drive,..??
If so, chances are you can't turn it by hand,.....

Otherwise, tighten the belts, 'n use the nut on the alternator, or if the starter is off it, pry on the ring gear teeth,.....

Don't use the crankshaft bolt, as it results in a broken crankshaft bolt,.....

 

[Franco_boater]

Engine is on the boat with drive removed

 

[dubs283]

If you remove the spark plugs with the drive off it's possible to turn the engine with a socket on the crank bolt. Not the best way but if the engine is sound you ought to be able to succeed with this method. If there is resistance, like your beyond 50 lb/ft torque do not continue trying to rotate the assembly, that's when one can break a crank bolt. Never seen it happen personally but anything can go wrong quickly

 

[Franco_boater]

And with plugs on? hows the best way?

 

[dubs283]

And with plugs on? hows the best way?

Just remove the plugs, pretty simple task

Out of curiosity, why are we trying to rotate the engine by hand?

 

[Franco_boater]

To check alignment, to spray fog tinto the spark plugs then turn the engine or turn the engine after the winter ,

 

[achris]

Remote starter switch....

 

[Scott06]

And with plugs on? hows the best way?

Take the plugs out yiu dont have to over come compression forces. With plugs out you can turn it by hand …