SOHC.co.uk Forums > CB500/550
Shocking !!!!!! (as in electrics)
deltarider:
--- Quote from: MCTID on May 14, 2022, 10:58:33 PM ---The Frame is 72 K1 20865XX and Engine is 73 K2 21781XX....Import and 76 R Reg....not sure where it's from originally but possibly France as it has French on the VIN Plate.[...]
--- End quote ---
Both numbers indicate yours is a CB500K2 (ED, F, G) aka CB500K2 GENERAL EXPORT which was quite different than the CB500K2-A, traded in the US three years earlier (1973). Your (and my) model share a lot with the CB550K2, which was US only (1976).
The appropiate part list is here: https://www.honda4fun.com/dwnload/Part-List/CB500/CB500-K2-76-Parts-List.pdf. (the engine- and framenumbers are listed on p.4) and CMSNL has this model hidden somewhat, but you can find it here: https://www.cmsnl.com/honda-cb500k2-general-export_model50441/partslist/
Yours has the central grease nipple fitted under the swing arm and three fuses. To determine whether it is the -F (France) model, check the carbs number. The -F model had the 627B carbs, the -ED and -G had the 649A carbs. The latter had the AIR DUCT over the airfilter, the -F didn't.
royhall:
--- Quote from: deltarider on May 15, 2022, 08:43:23 AM ---
--- Quote from: MCTID on May 14, 2022, 10:58:33 PM ---The Frame is 72 K1 20865XX and Engine is 73 K2 21781XX....Import and 76 R Reg....not sure where it's from originally but possibly France as it has French on the VIN Plate.[...]
--- End quote ---
Both numbers indicate yours is a CB500K2 (ED, F, G) aka CB500K2 GENERAL EXPORT which was quite different than the CB500K2-A, traded in the US three years earlier (1973). Your (and my) model share a lot with the CB550K2, which was US only (1976).
The appropiate part list is here: https://www.honda4fun.com/dwnload/Part-List/CB500/CB500-K2-76-Parts-List.pdf. (the engine- and framenumbers are listed on p.4) and CMSNL has this model hidden somewhat, but you can find it here: https://www.cmsnl.com/honda-cb500k2-general-export_model50441/partslist/
Yours has the central grease nipple fitted under the swing arm and three fuses. To determine whether it is the -F (France) model, check the carbs number. The -F model had the 627B carbs, the -ED and -G had the 649A carbs. The latter had the AIR DUCT over the airfilter, the -F didn't.
--- End quote ---
Wow, that's impressive knowledge.
Oddjob:
I've been thinking about the weird noise the engine makes Roy, is it top end related as I'm thinking it may be rocker shaft or rocker related. The K2 would have the longer type fitted but I think without the cotter pin arrangement of the 550s, so they could be spinning or have surface damage that causes the rocker arms to move slightly.
deltarider:
--- Quote from: Oddjob on May 15, 2022, 12:49:43 PM ---[...] The K2 would have the longer type fitted but I think without the cotter pin arrangement of the 550s, so they could be spinning or have surface damage that causes the rocker arms to move slightly.
--- End quote ---
According to his engine number, his has the longer 4 rocker shafts and not the 8 shorter. AFAIK and according to the parts list p.13 that mod included he cotter pin arrangement.
Bryanj:
There are definately 3 itterations
1 8 short shafts
2 4 long shafts
3 4 long shafts with cotters
I know this as i have SEEN them all, you cant trust engine numbers and Honda parts books have mistakes plus the interchange of parts over the yeard
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