easy question....

[terminaltsi]

can't find the answer through search both here and other resources online...
what's the proper head bolt torque for a 2G?

 

[timm98gst]

my chilton manual reads:
non-turbo: short bolts - 20 ft.lbs.
long bolts - 48 ft.lbs.
turbo (plus 2 additional 1/4 turns: 14.5 ft.lbs.

 

[terminaltsi]

my chilton manual reads:
non-turbo: short bolts - 20 ft.lbs.
long bolts - 48 ft.lbs.
turbo (plus 2 additional 1/4 turns: 14.5 ft.lbs.

THE HEAD bolts are only 48 lb.ft. plus 14.5?! seems kinds low... compared to a 1g

 

[blackGSX2g]

No, those are non turbo specs. The 2g N/T heads have two different lengths of head bolts so they require different torque settings. If you have a turbo, follow the specs listed for that. If thats right from the book, I assume its true...every rebuild I've done was with ARPs which are different. Are you using ARP head studs, or stockers?

 

[terminaltsi]

No, those are non turbo specs. The 2g N/T heads have two different lengths of head bolts so they require different torque settings. If you have a turbo, follow the specs listed for that. If thats right from the book, I assume its true...every rebuild I've done was with ARPs which are different. Are you using ARP head studs, or stockers?

i'm using stock new mitsu bolts for a turbo engine. so it's 14.5 ft lbs. plus 2 quarter turns?

 

[blackGSX2g]

i'm using stock new mitsu bolts for a turbo engine. so it's 14.5 ft lbs. plus 2 quarter turns?

Yes, you torque them all to 14.5 starting from the center of the head moving outwards. Then go back and torque them all 90* (1/4 turn) in the same pattern as before, then go back and do another 90* (1/4 turn) in the same pattern as the above two.

They are torque to yield bolts, so thats why you need to do the additional turns. Its just stretching them to hold the clamping force. Also why you don't want to re-use those head bolts.

 

[terminaltsi]

Yes, you torque them all to 14.5 starting from the center of the head moving outwards. Then go back and torque them all 90* (1/4 turn) in the same pattern as before, then go back and do another 90* (1/4 turn) in the same pattern as the above two.

They are torque to yield bolts, so thats why you need to do the additional turns. Its just stretching them to hold the clamping force. Also why you don't want to re-use those head bolts.

got it thanks. i knew they were tty bolts, just couldnt' find the specs.