Head gasket installation with arp head studs.

VB242 · 04-11-2018, 01:07 PM

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?

MDVLN · 04-11-2018, 01:55 PM

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

VB242 · 04-11-2018, 02:14 PM

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.

cwdodson88 · 04-12-2018, 03:05 PM

Torque and relieve them. 3x was what arp told me after my hg popped right after install

VB242 · 04-12-2018, 06:31 PM

Arp lube was in the package! :-) so do the whole procedure 3x?

Stiggy Pop · 04-12-2018, 06:47 PM

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.

JERIC · 04-12-2018, 07:17 PM

ARP recommends doing it three times to properly seat the bolts

cwdodson88 · 04-12-2018, 07:33 PM

Quote:

Originally Posted by JERIC

ARP recommends doing it three times to properly seat the bolts

and he told me it was to stretch them.

freevolvos · 04-12-2018, 07:34 PM

Quote:

Originally Posted by JERIC

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

cwdodson88 · 04-12-2018, 08:29 PM

Quote:

Originally Posted by VB242

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.

quillc · 04-12-2018, 10:22 PM

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.

mikep · 04-13-2018, 10:15 AM

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.

freevolvos · 04-13-2018, 10:35 PM

also make sure the washers don't turn on the head of they do sand them on the head side

quillc · 04-20-2018, 08:35 PM

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.

04-11-2018, 01:07 PM	#1
VB242 I.M. Weasel Join Date: Sep 2011 Location: Driving the No Malarkey Bus	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? __________________ Living life one day at a time. Stopping to smell the oil slick beneath my Volvos.

04-12-2018, 06:47 PM	#6
Stiggy Pop Board Member Join Date: Feb 2011 Location: Granville, MA	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. __________________ '79 242 943 pickup

04-12-2018, 10:22 PM	#11
quillc yv1a.com Join Date: Aug 2008 Location: Kitsap, Wa	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. __________________ Chris www.yv1a.com

04-13-2018, 10:15 AM	#12
mikep The MP Join Date: May 2003 Location: 38° 27' N 75° 29' W	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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04-11-2018, 01:55 PM	#2
MDVLN Kapitän Klugscheißer Join Date: Mar 2013 Location: Varies	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

04-11-2018, 02:14 PM	#3
VB242 I.M. Weasel Join Date: Sep 2011 Location: Driving the No Malarkey Bus	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.

04-12-2018, 06:31 PM	#5
VB242 I.M. Weasel Join Date: Sep 2011 Location: Driving the No Malarkey Bus	Arp lube was in the package! :-) so do the whole procedure 3x?

04-12-2018, 07:17 PM	#7
JERIC Board Member Join Date: Sep 2007 Location: SOUTH JERSEY	ARP recommends doing it three times to properly seat the bolts

04-13-2018, 10:35 PM	#13
freevolvos Board Member Join Date: Jan 2011 Location: hillpoint	also make sure the washers don't turn on the head of they do sand them on the head side

04-20-2018, 08:35 PM	#14
quillc yv1a.com Join Date: Aug 2008 Location: Kitsap, Wa	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.