re-torque head after 20 hrs ? 3.0 litre

[willscarver]

Replaced the head with reman and after 20 hr your to re-torque the head bolts? Many repowered boats in my area this is never done. is it realy nessasary? By the way the engine runs great I would hate to do all that work to just blow a head gasket!

 

[achris]

Re: re-torque head after 20 hrs ? 3.0 litre

Depends on the head gasket. Some require, some don't... What gasket did you use?

 

[willscarver]

Re: re-torque head after 20 hrs ? 3.0 litre

Depends on the head gasket. Some require, some don't... What gasket did you use?

It was mercruiser labeled stock.

 

[achris]

Re: re-torque head after 20 hrs ? 3.0 litre

I can't find anything in the manuals, but I would re-torque the head bolts...

 

[fat fanny]

Re: re-torque head after 20 hrs ? 3.0 litre

I have always ran them up to operating temp and let it cool back down to ambiant temp and check the torque again!

 

[willscarver]

Re: re-torque head after 20 hrs ? 3.0 litre

I found that note in the manual I downloaded from a link in Iboats.Well ya gota do what ya gota do! But I bought another boat that needs some work ! an my F150 needs an exhaust and the grass is getting tall. Stripped bass are in the bay an hitting hard! May be the lawn tracter wont start,(I hope!). Thanks for the input.

 

[achris]

Re: re-torque head after 20 hrs ? 3.0 litre

I have always ran them up to operating temp and let it cool back down to ambiant temp and check the torque again!

That's for ali heads, cast iron heads need to be bought to operating temperature and then re-torque the bolts...

Chris......

 

[Fordiesel69]

Re: re-torque head after 20 hrs ? 3.0 litre

If a new stock merc part, you will not need to. If you got a new-old-stock part, I personally would retorque.