I got 800 miles on my motor (sig). Is it really necessary to re-torque the head bolts? If so.....when should I do it.....at what mileage???

 

It's always good insurance to re-check the torque on the headbolts. You could probably do it now.

 

FWIW Ive heard from a few knowledgeable board members and with my motor we just torqued an extra 5 ft/lbs from the get go. No problems yet.

 

anyone else???

 

Put my heads on this summer, never re-torqued them. Have about $1.5K miles so far. No problems. I am just too lazy to take alt off again to take valve cover off to re-torque

I think you probably should, why take a chance?

When you buy a car brand new you don't have to take it in to re-torque, so how does that work?

 

here is my two cents if your heads are iron then yes retorque them because they expand alot more then alu. just leave it.

 

We just torqued mine extra also....but i'd just leave it....ur good.

Joe