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#1 |
Registered Member
Join Date: Mar 2002
Location: sherwood Forest
Posts: 291
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![]() I was reading a build and the builder was very careful checking crank endplay. The author noted that proper endplay promoted less rolling resistance, less horsepower to turn. I dont understand how to adjust endplay?? Anybody ever tackle a job like that??
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84 gt350 89 lx vert 92 lincoln lsc. All Forced ( one way or another) |
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#2 |
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Join Date: Jan 2001
Location: Moline Il
Posts: 901
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![]() Endplay is set by the thrust bearing. (#3 main) I always check the endplay, but I have never had one tight enough where I had to change the clearance.
Andy
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88 coupe 91 LX NMRA Pure Street 5120 |
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#3 |
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Join Date: Mar 2000
Location: lincoln, NE
Posts: 80
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![]() I have seen people hit the ends of the crank with a dead blow type hammer but I dont know if that was to adjust or just to seat the bearings.
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#4 | |
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Join Date: Mar 2002
Location: sherwood Forest
Posts: 291
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![]() Quote:
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84 gt350 89 lx vert 92 lincoln lsc. All Forced ( one way or another) |
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#5 |
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Join Date: Jan 2001
Location: Moline Il
Posts: 901
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![]() If I had one that was too loose I'd definately get a different set of bearings. If it was too tight I'd find a way to take a couple thou off. Maybe sand it or something.
Andy
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88 coupe 91 LX NMRA Pure Street 5120 |
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#6 |
Junior Member
Join Date: Mar 1999
Location: Ventura, California
Posts: 8,981
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![]() You won't find it too tight, but when it becomes too loose, you correct it with a new set of main bearings with a thicker (on the side) thrust bearing. Actually, when it becomes too loose, it's probably time for a rebuild, but either way, it's corrected with the thrust bearing.
Take care, ~Chris
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#7 |
Moderator
Join Date: Aug 2000
Location: Milan, OH
Posts: 2,699
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![]() Occasionally you will find the thrust too tight with a new set of bearings. When this happens, you simply sand the thrust bearing surface with some 400-600 grit sandpaper on a granite machinists block or good flat machined surface such as a mill table. For a SBF, the thrust should be about 0.004-0.005" with a manual transmission, just slightly less with an auto trans.
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