Variomatic Posted November 21, 2016 Share Posted November 21, 2016 Someone if trying to sell me a "CB550 cosworth", but I can't actually find any information about them anywhere, the only visual difference to the bike apart from a normal CB550 was that if has "cosworth" cast onto the cylinder head, anyone know anything about these? Link to comment Share on other sites More sharing options...
neversaydie Posted November 21, 2016 Share Posted November 21, 2016 Cosworth were mostly associated with motor car racing a lot of work with Ford in the 70s and 80s. Many of us older chappies will remeber the sierra cosworth/escort cosworth etc. Wasnt aware they worked with the bike manufacturers Link to comment Share on other sites More sharing options...
pilninggas Posted November 21, 2016 Share Posted November 21, 2016 Probably means that the cams weren't manufactured from the Honda-Cadbury alliance of the late 70s - early 80s..... Link to comment Share on other sites More sharing options...
Moderator drewpy Posted November 21, 2016 Moderator Share Posted November 21, 2016 cosworth worked for Norton, so they are pretty clued up on bikes. Link to comment Share on other sites More sharing options...
Variomatic Posted November 21, 2016 Author Share Posted November 21, 2016 3 hours ago, neversaydie said: Cosworth were mostly associated with motor car racing a lot of work with Ford in the 70s and 80s. Many of us older chappies will remeber the sierra cosworth/escort cosworth etc. Wasnt aware they worked with the bike manufacturers Yeah I'm familiar with Cosworth, just didn't have a clue they made a factory performance model by them, even after looking I've found sod all on them, can't imagine they where very common if so little about them is on the web now 3 hours ago, drewpy said: cosworth worked for Norton, so they are pretty clued up on bikes. Yeah as far as I can find they just added mild performance parts, no evidence on what they added though, I'm imagining something like a cam and maybe mildly higher compression, also, really interesting they worked with Norton, I didn't think the men in charge would have allowed it. Not sure I'm interested in buying it if it's got a significant number of rare top end parts, and from what I've heard the CB550 has some minor issues with lubrication on the top end. Link to comment Share on other sites More sharing options...
Campaman Posted November 22, 2016 Share Posted November 22, 2016 Maybe a quick email to Cosworth them selves may give you a bit more information, they may still have someone working there that was involved. Link to comment Share on other sites More sharing options...
slice Posted November 22, 2016 Share Posted November 22, 2016 It means your bike has Cosworth pistons! http://www.cosworth.com/products/performance-parts/forged-pistons/honda/ 1 Link to comment Share on other sites More sharing options...
Moderator drewpy Posted November 22, 2016 Moderator Share Posted November 22, 2016 I've put the question on VJMC facebook page, so far a blank Link to comment Share on other sites More sharing options...
Tommy xs Posted November 22, 2016 Share Posted November 22, 2016 Cosworth also worked on the xz550, maybe not such a good example Link to comment Share on other sites More sharing options...
Moderator drewpy Posted November 24, 2016 Moderator Share Posted November 24, 2016 can you get him to send some photos? a few peeps are interested at the VJMC page Link to comment Share on other sites More sharing options...
Variomatic Posted November 24, 2016 Author Share Posted November 24, 2016 13 hours ago, drewpy said: can you get him to send some photos? a few peeps are interested at the VJMC page Too late pal, he sold it, had a load of missing bits so I didn't want it, wrong wheels and bars, missing half it's exhaust, and to top it off the engine had a really hard spot that it was hard to get it to turn past, which as far as we could figure was a stuck valve, it was too far gone for me but the guy who bought it lit up like a little kid when he got his hands on it, if he still has some photographs I'll get them up asap! On 22/11/2016 at 10:16 AM, slice said: It means your bike has Cosworth pistons! http://www.cosworth.com/products/performance-parts/forged-pistons/honda/ I didn't get it in the end for the above reason aha, kinda regret it, but tbh I don't have a few hundred quid to drop on what was almost a basket case, also it's really cool that Cosworth still makes parts for this bike! 1 Link to comment Share on other sites More sharing options...
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