Question torque on ARP cylinder head studs

da_trem · Post by **da_trem** » Sun Apr 13, 2014 3:22 pm

Looking at retorquing my ARP cylinder head bolts. Information about that is misleading. Some do, some don't.

Mine where torqued once at 80lbs/ft. Should I be concerned ?

amd is the best · Post by **amd is the best** » Sun Apr 13, 2014 5:53 pm

da_trem wrote:Looking at retorquing my ARP cylinder head bolts. Information about that is misleading. Some do, some don't.

Mine where torqued once at 80lbs/ft. Should I be concerned ?

Which kit do you have? If undercut (ARP 204-4704) retorquing is not necessary as they are technically stretch studs, kind of like OEM. If non-undercut, then retorquing may be a necessity.

da_trem · Post by **da_trem** » Sun Apr 13, 2014 7:18 pm

Undercut set. No retorque then.

Thanks a lot!
Dave

bradyzq · Post by **bradyzq** » Wed Apr 16, 2014 4:56 pm

No personal experience here (my 3B is stock, head bolt-wise), but I remember someone posting about needing washers under the nut to help spread the load and avoid digging in to the head. I think it was chaloux who wrote about this.

boost_addict · Post by **boost_addict** » Thu Apr 24, 2014 10:51 pm

it always good to check or re-torque any head studs undercut or not. I torque mine to 85 in steps. 50, 70, 85

AngryTaco · Post by **AngryTaco** » Tue Apr 29, 2014 1:22 pm

bradyzq wrote:No personal experience here (my 3B is stock, head bolt-wise), but I remember someone posting about needing washers under the nut to help spread the load and avoid digging in to the head. I think it was chaloux who wrote about this.

The ARP kits come with washers. It's the used sets that dont

AngryTaco · Post by **AngryTaco** » Tue Apr 29, 2014 1:22 pm

boost_addict wrote:it always good to check or re-torque any head studs undercut or not. I torque mine to 85 in steps. 50, 70, 85

x2

bradyzq · Post by **bradyzq** » Sat May 03, 2014 10:41 am

AngryTaco wrote:
bradyzq wrote:No personal experience here (my 3B is stock, head bolt-wise), but I remember someone posting about needing washers under the nut to help spread the load and avoid digging in to the head. I think it was chaloux who wrote about this.

The ARP kits come with washers. It's the used sets that dont

Yes, I am aware of that.

BIGGER washers needed to avoid cutting into the head by not distributing the load enough.

chaloux · Post by **chaloux** » Sat May 03, 2014 11:04 am

With the new torque spec after people lifted heads.

da_trem · Post by **da_trem** » Sun May 04, 2014 9:57 am

Oh well, i'll recheck these anyways since I'm in need of a new timing chain. Cams are already off. I'll come back to you with results as retorquing was necessary or not.

As for the supplied washers in the ARP kit, I not using these. I've ordered HD ones from Thuppu on S2 forum.

If anyone needs ARP head washers, just let me know.

Thuppu's HD head washers:

da_trem · Post by **da_trem** » Thu May 08, 2014 4:40 am

Did my timing chain last night. Rechecked torque of the head studs nuts. They were all within specs, the undercut set I have haven't loosened a bit.

glibobbo21 · Post by **glibobbo21** » Tue May 27, 2014 5:59 am

Those washers are sexy. Also...I always retorque, undercut or not. 07k wont take the bigger washers because ARP made them proper the first time. ;-)

Question torque on ARP cylinder head studs

Question torque on ARP cylinder head studs

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Re: Question torque on ARP cylinder head studs

Re: Question torque on ARP cylinder head studs

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Re: Question torque on ARP cylinder head studs

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Re: Question torque on ARP cylinder head studs

Re: Question torque on ARP cylinder head studs