 ARP Head Studs |
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| retrotech |
 May 13 2008, 07:34 PM
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#1
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retrotech  Group: Members Posts: 470 Joined: 2-November 03 From: Mosier, Oregon Member No.: 1,302  |
Any pro's or con's to using ARP head studs, on a 2.8?
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| sww914 |
May 13 2008, 08:01 PM
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#2
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Advanced Member Group: Members Posts: 2,439 Joined: 4-June 06 Member No.: 6,146 Region Association: None |
Have you read up on this subject over on the Pelican 911 engine rebuilding forum? I think that ARP head studs will work great, but keep in mind that several years ago Dilivar studs were the devil, and steel were god but now it's the other way around or maybe it's back again by now, I don't know. I do know 2 things- ARP has earned a great reputation and no studs last forever. My engine came with a brand new set of steel studs and that's what I'm using.
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| J P Stein |
May 13 2008, 08:10 PM
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#3
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Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
If you use steel studs it's wise to go back after a few heat cycles and check torque.....then do it again after a few more...if they are loose, keep doing it till they aren't..and what ever you do, don't let the engine get hot......over 220 deg..just my opinion. Yes, I'm a fan of Dilivar studs.
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| 0396 |
May 13 2008, 09:19 PM
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#4
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Advanced Member Group: Members Posts: 2,046 Joined: 13-October 03 From: L.A. Calif Member No.: 1,245 Region Association: Southern California |
I use Racewear fasteners..so far so good |
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| sww914 |
May 13 2008, 09:35 PM
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#5
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Advanced Member Group: Members Posts: 2,439 Joined: 4-June 06 Member No.: 6,146 Region Association: None |
Thanks JP
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| J P Stein |
May 13 2008, 10:38 PM
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#6
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Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
Heat is THE killer of mag case motors. If you've installed case savers your chances of pulling one of these is less....but no guarantee regardless of stud type. Keeping the temps down is the ticket. My engine's studs (full thread Dilivars) held the initial torque I put on then till I took it apart 7 years later......so I'm sold on them .....which is not to say that other things won't work. The Dilivars have become frightfully expensive since the dollar took a dump.....along with first under rod & main bearings.
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| sixnotfour |
May 15 2008, 12:59 AM
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#7
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914 Wizard Group: Members Posts: 10,419 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains 
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Dilivars that are plated and black epoxy hold up well ,
the old bare ones , corrosion is the killer. pop. |
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| smdubovsky |
May 15 2008, 07:29 AM
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#8
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Member Group: Members Posts: 331 Joined: 27-September 04 From: Silver Spring, MD Member No.: 2,837 Region Association: MidAtlantic Region |
993 steel studs are fully coated and inexpensive. Seem to be the favored version (other than ARP/raceware) I used them in the 911. Used raceware nuts for access to the 2nd plugs though;)
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| TeenerTim |
May 16 2008, 02:58 PM
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#9
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Senior Member Group: Members Posts: 597 Joined: 22-October 07 From: Norfolk,VA Member No.: 8,253 Region Association: MidAtlantic Region |
QUOTE(smdubovsky @ May 15 2008, 09:29 AM)  993 steel studs are fully coated and inexpensive. Seem to be the favored version (other than ARP/raceware) I used them in the 911. Used raceware nuts for access to the 2nd plugs though;) Steel are OK for later models but I would only use Dilivar in the 2.7 mag cases. The Dilivar studs have pretty much the same expansion rates as the surrounding components. That's reason they're recommended. |
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