head torque settings

baz · Post by **baz** » Wed Jan 13, 2010 5:17 pm

did a quick search but couldn't find what i was after

Basically a friend is doing the head gasket on his exa, It's going off the be machined tomorrow, So my question is what are the torque settings for the head bolts?

Much appreciated Baz

baz · Post by **baz** » Wed Jan 13, 2010 7:48 pm

I assume the manual has the info I need but I have w7 and making shit run on this atm isn't a walk in the park

boosted · Post by **boosted** » Wed Jan 13, 2010 8:40 pm

hey, dont have my manual around right now, but i found this :

Install the cylinder head on the block and tighten the bolts in stages: first tighten all bolts to 22 ft. lbs. (30 Nm), then retighten them all to 51 ft. lbs. (69 Nm). Next, loosen all bolts completely, and then retighten them again to 22 ft. lbs. (30 Nm). Tighten all bolts to a final torque of 51-54 ft. lbs. (69-74 Nm).

baz · Post by **baz** » Thu Jan 14, 2010 3:50 pm

hmm, So just the same procedure but twice, easy enough

JETETT · Post by **JETETT** » Thu Jan 14, 2010 4:25 pm

Damo · Post by **Damo** » Thu Jan 14, 2010 7:17 pm

JETETT wrote:

I would be careful with not putting washers under the short bolts, as I have had a bolt bottom out and shear off mid way up the shaft!

Damo

Panda_ET · Post by **Panda_ET** » Thu Jan 14, 2010 7:41 pm

NOthin worse than snapping your bolt off in the shaft ergh ASK Evan he knows about snapping his bolt so I heard the other day

baz · Post by **baz** » Thu Jan 14, 2010 8:11 pm

fantastic, Thanks for the info

Paul Smith · Post by **Paul Smith** » Thu Jan 14, 2010 8:36 pm

Yep. That's horseshit. Use the washers.

et_rider · Post by **et_rider** » Mon Feb 15, 2010 8:13 am

why loosten them off again i have neva done this

trailblazer · Post by **trailblazer** » Fri Feb 19, 2010 7:23 pm

i think it's to do with being a monotorque head gasket. you shouldn't have to re torque them after a certain period if you do that procedure.

JETETT · Post by **JETETT** » Fri Feb 19, 2010 8:01 pm

et_rider wrote:why loosten them off again i have neva done this

im not sure ask Bjorn he sent it to me from the old yahoo site

baz · Post by **baz** » Wed Feb 24, 2010 8:14 pm

Deff use the washers lol, as we found out that the bolts will bottom out and not tighten up correctly and then you will have leaks lol

Post by **tassuperkart** » Thu Feb 25, 2010 6:18 pm

What is also crucial is to make sure that the washers are not "1 sided".

These head washers are a fairly funky design and are NOT just plain flat washers.

They have a chamfer stamped into the hole to accommodate the radius which is rolled under the bolt head and if this radius is not under the bolt head, vastly inconsistent torque settings and eventually snapped headbolts can be the result.
Often, these washers have the chamfer on both sides to allow for the idiot factor but I have seen plenty of them one sided.

L8r
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