Torque Angle

[doug73cs]

Installing a head gasket requires further torquing the head bolts after 15min by 33degrees and then a further 25 after full warm up. Torque angle means a further tightening by 33 degrees regardless of however many ft/lbs is being added - just take the bolt through another 33degrees clockewise. No fancy tools required as long as the initial torque setting specified by the head gasket manufacturer (Renz in htis case) is met.

Correct?

Doug

[c.d.iesel]

yes

[c.d.iesel]

i sure hope your head bolt holes in the block

were clean of all dirt, coolent, oil, carbon right to the

bottoms? and the head bolts were either new, or

threads clean with a light smear of motor oil on

the threads and the bolt head at the washers?

[Guest Anonymous]

second that - you are stretching new ones and once you have done that you never move them again without replacing them.

[doug73cs]

i sure hope your head bolt holes in the block

were clean of all dirt, coolent, oil, carbon right to the

bottoms? and the head bolts were either new, or

threads clean with a light smear of motor oil on

the threads and the bolt head at the washers?

C.D. - the way I read your advice (thanks for it) is either buy new bolts or re-use the old ones as long as the bolt holes and threads are very clean and the threads and washers at the bolt heads are lightly oiled. OK to re-use.

Doug

[Colin]

i sure hope your head bolt holes in the block

were clean of all dirt, coolent, oil, carbon right to the

bottoms? and the head bolts were either new, or

threads clean with a light smear of motor oil on

the threads and the bolt head at the washers?

C.D. - the way I read your advice (thanks for it) is either buy new bolts or re-use the old ones as long as the bolt holes and threads are very clean and the threads and washers at the bolt heads are lightly oiled. OK to re-use.

Doug

You can reuse them no problem. Like the Man said, just make sure everything is CLEAN!

[napa02]

second that - you are stretching new ones and once you have done that you never move them again without replacing them.

M10's don't use "stretch" head bolts, you can re-use them...

[Guest Anonymous]

I stand corrected - I think I was recalling directions from the last head gasket I installed, but that has been many years ago now.

[KFunk]

I would go with the old method of doing it.... and retorque it after a couple heat cycles (I'm in the middle of replacing my headgasket 300 miles after a rebuild, in which I used the angle torque method, new head bolts, resurfaced block/head, etc.)

[nbristow01]

Installing a head gasket requires further torquing the head bolts after 15min by 33degrees and then a further 25 after full warm up. Torque angle means a further tightening by 33 degrees regardless of however many ft/lbs is being added - just take the bolt through another 33degrees clockewise. No fancy tools required as long as the initial torque setting specified by the head gasket manufacturer (Renz in htis case) is met.

Correct?

Doug

I think it is an urban legend that these M10 motors use stretch bolts on the heads. BUT since a set only runs about 20 bucks new there is no need to test that legend. Plus you have no clue what the maniac before you did with those bolts. Have done my head twice and new bolts both times..just to be safe