blown head gasket

[yamaha4life89]

Ok, well i just replaced my head gasket three weeks ago (felt pro gasket & arp head studs).I torqued the bolts 90ft lbs in three steps 30lbs-60lbs-90lbs. The paper with the studs says to hand tighten the studs is this correct, and is there anything that i should do when i put the new 1 on. I really dont want to have to replace it again in three weeks. I am going with a 4 layer mitsu. this time.

 

[95TalonOwner]

If I remember correctly, the correct torque for the head bolts is supposed to be 52 ft/lbs or 62 ft/lbs.

 

[yamaha4life89]

I read the paper from the felt pro kit 72ft lbs but ive read that you can torque arp head studs up to 120ft lbs and have no problems with a 4 layer.

 

[95TalonOwner]

Ahh yes 72 it is. Now I remember. I just did this like 2 weeks ago to my 90.

 

[MidShipCivic]

I read the paper from the felt pro kit 72ft lbs but ive read that you can torque arp head studs up to 120ft lbs and have no problems with a 4 layer.

The direction on ARP intructions intruct you to torque to 120ft lbs if your're using motor oil, because of the difference in friction using a different lubricant.

 

[yamaha4life89]

The gasket blow out in the middle of the 2 and 3 piston with a 1 inch gap ive never seen anything like this. I think the head could be worped but i know how that is possible. Any suggestion on what the cause was. I cleaned both sides very well with razer and about 500 grit sand paper. Maybe it was the felt pro gasket i was boosting about 20psi. The car is running very rich due to my 255 walbro but stock 450 injectors.

 

[MidShipCivic]

If you want to find out if your head is warped purchase a machinist straight edge ( dont really have to , but you need something perfectly flat) and a feeler gauge.

Then follow the service manual guide for checking deck flatness.