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#1 |
Registered Mail
Join Date: Jun 2006
Location: Alberta, Canada
Posts: 513
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Should I be using washers or locktite on bolts for the flywheel and pressure plate?
I have searched everywhere in manuals and parts books, but don't see any reference to washers anywhere.. it just seems wrong to me, to just put the flywheel on the crank with no washers!?
and same for the pressure plate, that seems even more crazy since they are regular thread bolts and only like 20 ft-lbs tight (Gr.8 bolts of course) or should I pull everything apart and at least use some locktite?? I tried calling my local GM shop and they are useless, it seems all their mechanics only work with stuff that is 2007 and newer, and if you aren't taking it into them they don't care. anyone have any knowledge of what i should do?
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'67 chev 496, lwb to swb, bagged - pro street project Last edited by smoknbarrels; 06-18-2008 at 08:08 PM. |
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#2 |
Registered User
Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Re: Should I be using washers or locktite on bolts for the flywheel and pressure plat
I would use locktight, washers on a rotating mass could unbalance your crank.... just my opinion. Mine didn't have them on it when I tore it apart....
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The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" |
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#3 |
Registered Mail
Join Date: Jun 2006
Location: Alberta, Canada
Posts: 513
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Re: Should I be using washers or locktite on bolts for the flywheel and pressure plat
did yours have special bolt heads? like how head bolts look, with the bolt head that looks like it has a washer built in it like the photo.. I wonder if I need those or if my regular style grade 8 bolts will do.?
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'67 chev 496, lwb to swb, bagged - pro street project Last edited by smoknbarrels; 06-18-2008 at 09:01 PM. |
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#4 |
Senior Member
Join Date: Aug 2002
Location: Valley Center KS
Posts: 3,525
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Re: Should I be using washers or locktite on bolts for the flywheel and pressure plat
I've also seen bolts that have the back side of the head/washer with a kinda serated edge, kind of a locking feature.
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#5 |
Registered User
Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Re: Should I be using washers or locktite on bolts for the flywheel and pressure plat
can't remember... sorry. maybe someone else can chime in.
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The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" |
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#6 | |
Bloo
Join Date: Feb 2001
Location: Barren County Kentucky
Posts: 6,285
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Re: Should I be using washers or locktite on bolts for the flywheel and pressure plat
all of them ive ever done have shakeproof washers on the flywheel. i think alot of people call them star washers
![]() pressure plates normally have lock washers on them. if your using a 12" clutch though, make SURE that you use brand new washers; old washers have a tendency to spread out and will hit the clutch disc
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ASE Master Certified-GM Trained-Mechanic 1968 Chevy C30 157" WB Wrecker 1969 Chevy CST/10 SWB 1971 Chevy Custom/10 (first truck) 350, NV3500 5 speed 1971 Chevy K20 Custom Camper 4x4 350 TBI, SM465/NP205 1974 Chevy Custom Deluxe/10 1979 Chevy Custom Deluxe K10 farm truck beater 1989 Chevy K2500 Quote:
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#7 | |
Registered Mail
Join Date: Jun 2006
Location: Alberta, Canada
Posts: 513
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Re: Should I be using washers or locktite on bolts for the flywheel and pressure plat
Quote:
![]() better off getting it 110% right on a $11,000 engine while it's out.
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'67 chev 496, lwb to swb, bagged - pro street project |
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#8 | ||
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: Should I be using washers or locktite on bolts for the flywheel and pressure plat
Quote:
Quote:
I still looked for the star washers and ended up getting some at a local bolt supply, they were like what's in the picture. They were weak in comparison to what came off. The ones that came off were a spring steel type and bit thinner. (two had cracks) I tried to hold both styles in my fingers and bend with needle nose pliers. I was only able to bend the style above. IMO the style above are for light duty stuff, and I wouldn't trust them in a hight strength area. - They probably will flatten out anyway. I ended up using red lock-tight and torquing them down with out washers.
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1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. ![]() Last edited by Sport/Truck; 06-19-2008 at 07:03 AM. |
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#9 |
Account Suspended
Join Date: Sep 2005
Location: Monroe, WA
Posts: 3,815
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Re: Should I be using washers or locktite on bolts for the flywheel and pressure plat
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#10 |
Senior Member
Join Date: Jun 2003
Location: Westminster, CO
Posts: 3,071
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Re: Should I be using washers or locktite on bolts for the flywheel and pressure plat
My ARP flywheel bolts specifically say "DO NOT USE WASHERS". Torque to specs and you are good to go. No harm in using a little locktite.
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Alex 1971 Lil' Red 350 SBC 700R4 |
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#11 |
Senior Member
![]() Join Date: Apr 2008
Location: Franklinton NC
Posts: 1,309
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Re: Should I be using washers or locktite on bolts for the flywheel and pressure plat
Use some loctite on the flywheel,extra protection even if you dont need it.most pressuse plates use lock washers
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