Volvo Penta head bolt torque

[Jim Putnam]

Just bought a Larson boat. Cracked head. Bought new head. I have been told that this engine is the same as GM2.5Ltr. I need the head bolt torque and torquing sequence. Can anyone help? thanks

 

[Don S]

Re: Volvo Penta head bolt torque

What engine, drive, year, full model number etc. do you have?

 

[Jim Putnam]

Re: Volvo Penta head bolt torque

What engine, drive, year, full model number etc. do you have?

It,s a 1998 19ft, with volvo penta outdrive with a 3.0LTr engine

 

[Don S]

Re: Volvo Penta head bolt torque

Tighten the cylinder head bolts, with a torque wrench, in three
progressive steps following the sequences hown.
? Step 1 -35ft. Ibs. (47 N m)
? Step 2 - 65 ft. Ibs. (88 N.m)
? Step 3 - 95 ft. Ibs. (129 N.m)

Rear
9--10
5--6
1--2
4--3
8--7
Front

 

[Jim Putnam]

Re: Volvo Penta head bolt torque

Thanks a lot, Don. The next time a maake a post, I'll be more infirmative about what type boat/motor I have. Thanks again,

 

[incrediblened]

Re: Volvo Penta head bolt torque

Tighten the cylinder head bolts, with a torque wrench, in three
progressive steps following the sequences hown.
? Step 1 -35ft. Ibs. (47 N m)
? Step 2 - 65 ft. Ibs. (88 N.m)
? Step 3 - 95 ft. Ibs. (129 N.m)

Rear
9--10
5--6
1--2
4--3
8--7
Front

Just wondering if these were the same specs for a 1991 Mercruiser 4.3?