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#1 |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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thread locker on flex plate & torque converter bolts
I'm getting ready to install my motor and need to attach the flex plate. I have the factory torque specs, but it says to use thread locker. Do I use red or blue? I plan on installing this as a unit and will bolt up the TC when it's in the truck.
Any ideas on how to hold the flex plate while torquing the bolts? s/t
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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; 06-15-2008 at 05:59 PM. |
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#2 |
Chevy nut
Join Date: Jun 2007
Location: Springfield, Illinois
Posts: 2,266
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Re: thread locker on flex plate & torque converter bolts
I use red.
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84 Chevy Custom Deluxe 1/2 Ton Named Fade To Black II "Remember kids there is NO replacement for displacement!" |
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#3 |
Senior Member
![]() Join Date: Jul 2004
Location: Estherville, Iowa
Posts: 3,371
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Re: thread locker on flex plate & torque converter bolts
And a vote for blue loctite here - I always install the flywheel/flexplate right afer I remove it from the engine stand, while hanging on the chain. You will need a helper, butt just put a bolt in one of the block bellhousing holes and use a big screwdriver in the teeth to hold it. Yes they make a tool that will hold it, but for occasional use not worth it in my cheap opinion.
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1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0 |
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#4 |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: thread locker on flex plate & torque converter bolts
So one red one blue...
![]() It sort of scares me to use red....I don't like the idea of having permanent lock tight on the bolts. I ended up putting it back on the stand, as I need to get some lock washers to do this right. The ones that were on it are the external star washers and two have a crack in them. Are split style washers out of the question? What do you use? s/t
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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; 06-15-2008 at 11:31 PM. |
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#5 |
Registered User
Join Date: Aug 2006
Location: Bakersfield,CA
Posts: 7,893
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Re: thread locker on flex plate & torque converter bolts
if it scares you to use red then just use blue and the split lock washers will work
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-steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME |
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#6 | |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: thread locker on flex plate & torque converter bolts
Quote:
Is there a clearance issue that need to be looked at? Some of the split washers can be quite thick. s/t
__________________
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; 06-15-2008 at 11:47 PM. |
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#7 |
Account Suspended
Join Date: Sep 2005
Location: Monroe, WA
Posts: 3,815
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Re: thread locker on flex plate & torque converter bolts
The flexplate bolts have star washers; I never put threadlocker on myself.
One of these really helps, otherwise just a prybar. Last edited by Billla; 06-15-2008 at 11:48 PM. |
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#8 | |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: thread locker on flex plate & torque converter bolts
Quote:
s/t
__________________
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. ![]() |
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#9 |
I'm a poor spectator
Join Date: Aug 2006
Location: San Antonio, Tx
Posts: 2,287
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Re: thread locker on flex plate & torque converter bolts
I used RED on both my 71 blazer's flywheel and pressure plate and my 79 ford's flywheel and pressure plate. A year after putting the motor in the blazer I yanked it back out and the bolts came out without issues. No heat or anything like that.
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2006 Jeep Unlimited IMPACT ORANGE 1993 Chevy 2500 4x4 ExCab LWB 454/NV4500 Tow rig ![]() 1977 Ford F100 2x4 LWB 1st truck I owned, still have it!!! ![]() 1979 Ford F150 4x4 SWB Built Ford Tough!!! ![]() 1971 Chevy Blazer 350 / SM465 / NP205 UNDER CONSTRUCTION Soon to have a LQ4 6.0!!! |
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#10 | |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: thread locker on flex plate & torque converter bolts
Quote:
Thanks. s/t
__________________
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. ![]() |
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#11 |
Senior Member
![]() Join Date: Jul 2004
Location: Estherville, Iowa
Posts: 3,371
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Re: thread locker on flex plate & torque converter bolts
I never used to use anything on the bolts and have never had anything come loose. When We did our first one piece rear main crankshaft motor it appeared to have blue loctite on the bolts. Never seen any loctite on the older engines.
Since the bolt pattern is smaller on the new cranks maybe GM was just playing it safe. Is loctite needed ? Probably not, but if you will feel better - do it, won't hurt anything.
__________________
1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0 |
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#12 |
Account Suspended
Join Date: Sep 2005
Location: Monroe, WA
Posts: 3,815
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Re: thread locker on flex plate & torque converter bolts
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#13 | |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: thread locker on flex plate & torque converter bolts
Quote:
s/t
__________________
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. ![]() |
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#14 |
Senior Member
![]() Join Date: Sep 2005
Location: Lewisville, Nc
Posts: 10,234
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Re: thread locker on flex plate & torque converter bolts
i would never use red lock tite because you have to heat the red to get it out. personally i have done the last4 motor swaps on 4 different vehicles all of them had star washers on them never used anything on the bolt never had a problem. just torque to factory specs
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
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#15 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
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Re: thread locker on flex plate & torque converter bolts
This thread needs locked!!...with blue.I never use any.I don`t think the factory did.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ Last edited by special-K; 06-16-2008 at 07:38 AM. |
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#16 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: thread locker on flex plate & torque converter bolts
i've always used blue for the simple fact that buildind stuff i've always got some on the shelf and it made sence to use it
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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#17 |
Registered User
![]() Join Date: Jan 2008
Location: St.Petersburg,Fl
Posts: 1,267
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Re: thread locker on flex plate & torque converter bolts
Buy new bolts and star washers and torque to specs and you will never have a problem.
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#18 |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: thread locker on flex plate & torque converter bolts
I called around for new star washers (local GM performance dealer, NAPA etc.)
I stopped by the local bolt co. and got some, but they are weak compared to the ones that came off. (I could start to bend them with my fingers and needle nose pliers, but not with the original ones). The guy at GM said all the newer cars are eliminating the washers and using lock-tight. Should I just leave them off and use some lock tight? Is this common? s/t
__________________
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. ![]() |
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