Two Wheels Better

Moderator

Number of posts : 4732
It is absolutely true that Bay Em Vay change part designs without changing part numbers. To wit, the large, caged bearing in Paralever final drives is an example. When they were having dramas regularly with them they did not supersede the part number, even though the number of ball bearings inside changed. It was only years later that the number changed, after the hullabaloo of inherent bad design and subsequent failure had died down a bit. This could be a factor here with camshafts, might, perhaps, maybe, sure. WWNK.
Some years ago, whilst attending a BMW dinner in South Carolina after a yearly business meeting and test ride of the brand spanking new dog of a motorbike, the R1200CLC (I was a lowly parts manager but the dealer principal from our shop could not attend so he asked me to stay on for the business portion of the week), Frank Stevens from BMWNA, with a cocktail or three in him, was fielding questions from various shop owners. He said some remarkable things. One of them was an obvious, in reference to superseded part numbers, etc., "Do you expect us to open ourselves up to lawsuits!?"
Unless, someone has two previously untouched engines, from the years in question, apart and is willing to whip calliper and micrometre out and give 'em a bloody good going over to compare.
Chris846
"I've got an '84 K100 btw and it does go like stink, but then it has got a 89-onwards lighter crank."
10.3 kg (22.71 lbs) down to 8.95 kg (19.73 lbs) mid-year '89 production is a perty good ol' drop in spinning mass!
Last edited by Two Wheels Better on Sun Nov 29, 2020 4:49 pm; edited 1 time in total
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1970 R60/5, OZ '77 R75/7-R100, '85 K100, '87 K75C, OZ '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R, '04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT & 2013 R1200RT-Polizei - Beemers owned still or sold.