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Old 04-11-2018, 01:07 PM   #1
VB242
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Default Head gasket installation with arp head studs.

I googled around a little bit and did not find much information on 8v head install with head studs. Nothing came in the box from Yoshifab either. I found a torque value of 90ft.lbs in one of the threads, is this correct?
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Old 04-11-2018, 01:55 PM   #2
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1. Clean and inspect holes in block.

2. Thread bolts* into block by hand

3. = 15ftlb

4. = 45ftlb

3. = 90ftlb ARP moly lube (or 120ftlb with 30wt oil)


*bolts = studs in this application
For future searchers - Arrow is pointing to front of vehicle.
Straight from https://yoshifab.com/store/webdocs/torquespecqrr.htm
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Old 04-11-2018, 02:14 PM   #3
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Thanks, I didn't find that but I was searching from my phone. I've seen that other people use moly assembly lube, I'm guessing that's similar to the arp lube.
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Old 04-12-2018, 03:05 PM   #4
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Torque and relieve them. 3x was what arp told me after my hg popped right after install
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Old 04-12-2018, 06:31 PM   #5
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Arp lube was in the package! :-) so do the whole procedure 3x?
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Old 04-12-2018, 06:47 PM   #6
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I didn't do that and never had an issue. MLS gasket and an o-ringed block though.

I did re-torque them after ~some miles, and they needed to be.
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Old 04-12-2018, 07:17 PM   #7
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ARP recommends doing it three times to properly seat the bolts
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Old 04-12-2018, 07:33 PM   #8
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Quote:
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ARP recommends doing it three times to properly seat the bolts
and he told me it was to stretch them.
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Old 04-12-2018, 07:34 PM   #9
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Quote:
Originally Posted by JERIC View Post
ARP recommends doing it three times to properly seat the bolts
properly stretch the bolts, last few engines i built i use a stretch gauge on the rod bolts (arp) as that's really the proper way to do it
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Old 04-12-2018, 08:29 PM   #10
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Quote:
Originally Posted by VB242 View Post
Arp lube was in the package! :-) so do the whole procedure 3x?
The way I understood it was to seat them, install the head and then torque full sequence in proper steps, break them all loose, check the studs are seated, re torque in sequence.
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Old 04-12-2018, 10:22 PM   #11
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I've installed two sets so far.

I installed them and torqued. Next day, I loosened and torqued one at a time.

Ran the motor and drove around for a bit.

Came out the next morning and loosened and torqued one at a time.

Done.

Stock Elring HG both times.
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Old 04-13-2018, 10:15 AM   #12
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Use the moly grease, not only on the threads. Get it on the washers, too.
Follow the de-torque sequence as well (reverse). I would think one time de-torque and re-torque would work, but it's yours, so rock on.
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Old 04-13-2018, 10:35 PM   #13
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also make sure the washers don't turn on the head of they do sand them on the head side
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Old 04-20-2018, 08:35 PM   #14
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On another note, I was able to install the studs on my 83 and then put the head on. On my 91, I was unable to do so. I had to set the head in place and then thread the studs in place.
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