 Flywheel Bolts |
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| Amphicar770 |
 Jan 19 2016, 12:01 PM
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#1
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Senior Member  Group: Members Posts: 1,229 Joined: 20-April 10 From: PA, USA Member No.: 11,639 Region Association: MidAtlantic Region 
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Hi all,
I have read conflicting info: Some say that you should not reuse flywheel bolts Others say to reuse them with some loctite blue and all is good. Seems obscene that these are $10+ each bolt. It looks like a number of Toyota equivalents are also M10 x 1.25, what I can not find is the length of the Porsche bolts. Seems like something like these should work if you can get the right length? http://www.ebay.com/itm/ARP-M10-x-1-25-x-2...8ah&vxp=mtr Thoughts? |
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| r_towle |
Jan 19 2016, 12:07 PM
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#2
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Custom Member Group: Members Posts: 24,705 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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I have never replaced them, I always re use them.
Do use locktight. They are not torque to yield, and that makes them reusable. |
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| brant |
Jan 19 2016, 12:12 PM
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#3
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914 Wizard Group: Members Posts: 12,167 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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4 or 6 cylinder?
I always re use 4 cylinder I've heard that later (bigger bore motors) 6 cylinder bolts are reuseable mixed reports on early 6 bolts... some say they reuse others say the early bolts are stretch bolts and must be replaced I always replace my 2.0/6 bolts for safety sake.. (plus red Loctite) |
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| stugray |
Jan 19 2016, 01:47 PM
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#4
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Advanced Member Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
Reuse and flip the "six shooter" gasket over if used only once.
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| ThePaintedMan |
Jan 19 2016, 01:57 PM
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#5
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Advanced Member Group: Members Posts: 3,887 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States
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That makes sense. I knew the aluminum crush washer had to be replaced, but it makes sense that you could flip it over. I agree, I'd use the bolts again, nothing special about them.
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| mepstein |
Jan 19 2016, 02:07 PM
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#6
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914-6 GT in waiting Group: Members Posts: 20,587 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region
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Our Porsche 962 mechanic said you never reuse flywheel bolts on a 6.
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| Amphicar770 |
Jan 19 2016, 02:28 PM
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#7
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Senior Member Group: Members Posts: 1,229 Joined: 20-April 10 From: PA, USA Member No.: 11,639 Region Association: MidAtlantic Region
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Mine is a 2.0, 4-banger, so sounds like reuse is good. Thanks.
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| porschetub |
Jan 20 2016, 04:24 PM
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#8
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914 Guru Group: Members Posts: 5,064 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
QUOTE(r_towle @ Jan 20 2016, 07:07 AM)  I have never replaced them, I always re use them. Do use locktight. They are not torque to yield, and that makes them reusable. I have used flywheel and head stud bolts a second time on many watercooled VW and on the early BMW's I had ....never an issue. No Loctite ? not sure about that,it can't hurt. Hell $10 for 914 flywheel bolts...nothing,check out what the price is for 6 bolt flywheel 911 ones ,its mental. |
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| McMark |
Jan 20 2016, 08:02 PM
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#9
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914 Freak! Group: Retired Admin Posts: 20,180 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Cap'n Krusty says, reuse 4cyl bolts, replace 6cyl bolts. Final answer. (IMG:style_emoticons/default/wink.gif)
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| wndsrfr |
Jan 20 2016, 09:01 PM
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#10
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Senior Member Group: Members Posts: 1,460 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region
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QUOTE(mepstein @ Jan 19 2016, 12:07 PM) Our Porsche 962 mechanic said you never reuse flywheel bolts on a 6. That's IF you can even remove those %#@&king 12 point bolts on a 6 given that I think red loctite is on some of them. Had a hell of a time getting two of them out that stripped the 12 point head, so tried an ez out which required grinding off the outer rim of the pilot bearing first...   Ended up grinding the threads out of a nut and welding it on to the bolt head to get them out....Yecccch  Definitely NOT reusable! |
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| brant |
Jan 20 2016, 11:09 PM
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#11
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914 Wizard Group: Members Posts: 12,167 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains
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Got to use a torch to release red loctite
A 600ft lb impact for factory installed bolts on a 6 without loctite Both teqniques are easy and work in seconds/minutes |
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