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General Category => General Discussion => Topic started by: Testarossa on November 06, 2017, 04:19:17 PM

Title: Front and rear main bearings
Post by: Testarossa on November 06, 2017, 04:19:17 PM: '74 850T

So . . . the front and rear bearings are integral with their flanges? Or can they be pressed out of the flanges and replaced that way?

Looking at the parts list at Harpers, I don't see separate part numbers for the bearings distinct from the flanges -- just the bearing-with-flange parts, that is front 12011900 (with oversize options) for $172, and rear 12011400 (with oversize options) for about $300.

Is there a cheaper way (Guzzi content) to replace those bearings? Pete Roper's instructions don't mention one.

http://www.thisoldtractor.com/guzzitech.dk/pdf/08_pete-roper-bigblock-guzzi-engine-strip.pdf
Title: Re: Front and rear main bearings
Post by: Antietam Classic Cycle on November 06, 2017, 04:26:49 PM: Nope, sold as a flange complete with bearing. MG Cycle is much less expensive.
Front main: $90-$95 for filter engines, $104-$108 for non-filter engines
1st under rear main: $153.57: http://www.mgcycle.com/index.php?main_page=product_info&cPath=68_126&products_id=189
Title: Re: Front and rear main bearings
Post by: Testarossa on November 06, 2017, 06:09:32 PM: Thanks, Charlie!
Title: Re: Front and rear main bearings
Post by: Huzo on November 06, 2017, 06:15:06 PM: Harper's has an apostrophe.... :rolleyes:
Title: Re: Front and rear main bearings
Post by: Testarossa on November 06, 2017, 06:22:41 PM: :violent1:
Title: Re: Front and rear main bearings
Post by: Huzo on November 06, 2017, 06:47:51 PM: Quote from: Testarossa on November 06, 2017, 06:22:41 PM
:violent1:
Good sport :bow:
Title: Re: Front and rear main bearings
Post by: Testarossa on November 21, 2017, 12:38:48 PM: Ordered all the bottom-end stuff today. Crank came back with everything ground to one undersize.

Sludge trap was about 1/4 full with mostly rubbery stuff off the original chain tensioner.

(http://thumb.ibb.co/bxH8nm/sludgetrap.jpg) (http://ibb.co/bxH8nm)

free unlimited photo hosting (http://imgbb.com/)

Next step is to soda-blast the crankcase and gearbox.
Title: Re: Front and rear main bearings
Post by: Curtis Harper on November 21, 2017, 02:06:59 PM: Harper's may be a bit more money, but Harper's has OEM parts. Not something that is questionable as to it's manufacture.......