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944 Newb
Join Date: Dec 2009
Posts: 29
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main bearings and loctite
The Haynes manual talks about separating the case and removing the crankshaft to replace main bearings. Do I have to do this or is it possible to replace them without having to redo the loctite 574? The bearings should be in pretty good shape since I am just doing this as preventive maintenance while I have everything out.
Thanks, Josh |
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12-31-2009, 08:20 PM
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Registered
Join Date: Oct 2005
Location: San Diego
Posts: 703
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Pretty sure you have to remove Crank Craddle and Crank. Not sure of work around. I'd pull the engine and do everything. Sorry it's not easy. But it's actually much easier to rebuild engine out of body of car.
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1987 924S with 968 Drive front to back, Bilstein Insert on mod/stock Struts, 450# Hypercoils, 28mm Torsion Bars, Weltmeister Adjustable Sway Bars, Lindsey 968 Light flywheel, Spec Stage II Clutch, ToYO RA1's, Auto Power Cage & 6 pt Harness, KLA Strut Brace, Greasy hands, heavy foot, and lots of smiles Last edited by JivenJim; 12-31-2009 at 11:35 PM.. |
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12-31-2009, 10:38 PM
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944 Newb
Join Date: Dec 2009
Posts: 29
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Thanks, yeah it looks like thats the only way especially to get that full bearing. I'm under the impression that the loctite actually seals the two crank surfaces and I should use assembly lube on the main bearings. Do I lube the rod bearings as well? I went ahead and ordered the 574 so I will just disassemble the whole crank assembly.
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12-31-2009, 11:26 PM
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Registered
Join Date: May 2009
Location: Hawkinsville / Perry, Ga.
Posts: 1,239
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All new bearings have to be lubed when installed to prevent burn out before oil pressure builds up. You for sure do not want any friction.
Cheers, Larry |
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12-31-2009, 11:33 PM
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Registered
Join Date: Oct 2005
Location: San Diego
Posts: 703
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I made an Edit Late night and all. Please re-read. Locite 574 is used for sealing metal to metal surface. Not for Bearings. A common rookie mistake is not to seal the Crank Craddle to the lower block with Locite or other sealer. This results in low oil pressure ALWAYS.
Use assembly lub on the Crank side of Bearings only per instructions, such as Clark. I personally use High temp Permatex RTV Silicone (26B) for crank craddle seal (not assembly lube), cause it's alot cheaper, but that's a choice of products and prices. Locite 574 is great stuff for balance shaft covers and crank craddle.
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1987 924S with 968 Drive front to back, Bilstein Insert on mod/stock Struts, 450# Hypercoils, 28mm Torsion Bars, Weltmeister Adjustable Sway Bars, Lindsey 968 Light flywheel, Spec Stage II Clutch, ToYO RA1's, Auto Power Cage & 6 pt Harness, KLA Strut Brace, Greasy hands, heavy foot, and lots of smiles |
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12-31-2009, 11:47 PM
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