Classic Honda power question
Discussion
Howdy folks, anyone here know the BHP for the following Honda CBs:
1978 400 4 F2
1973 500 4 (Euro Spec)
1973 550 4 (US import)
Thanks
I've been toying with getting back on a bike and I rather fancy one of these older models, just need to confirm the power for license etc
If they are over 33bhp (which I guess the 5's will be) is restriction of these older ones do-able?
Oh, and if the claimed BHP is close to 33bhp at time of manufacture, is it possible that the engine no longer makes that (ie get it dyno'd and get a cert that way?)
Cheers for any info.....
1978 400 4 F2
1973 500 4 (Euro Spec)
1973 550 4 (US import)
Thanks
I've been toying with getting back on a bike and I rather fancy one of these older models, just need to confirm the power for license etc
If they are over 33bhp (which I guess the 5's will be) is restriction of these older ones do-able?
Oh, and if the claimed BHP is close to 33bhp at time of manufacture, is it possible that the engine no longer makes that (ie get it dyno'd and get a cert that way?)
Cheers for any info.....
Claimed power was above 33bhp but was optomistic and may well be down to that level now.
Check out:
http://dspace.dial.pipex.com/graham_c/Reference/r_...
http://en.wikipedia.org/wiki/Honda_CB550
http://www.sohc4.net/index.php?title=1975_Cycle:_C...
http://www.motorbike-search-engine.co.uk/classic_b...
Check out:
http://dspace.dial.pipex.com/graham_c/Reference/r_...
http://en.wikipedia.org/wiki/Honda_CB550
http://www.sohc4.net/index.php?title=1975_Cycle:_C...
http://www.motorbike-search-engine.co.uk/classic_b...
Nope, they have to prove its over 33bhp. If it is restricted then you have nothing to worry about. My bike is listed as 40hp (so I recon I would be lucky to get 33 at the wheel anyway) and my insurance didn't even ask if its restricted. Dyno readout would be enough proof to get the police off your back even if its their job to prove its not restricted.
robodonkey2005 said:
Howdy folks, anyone here know the BHP for the following Honda CBs:
1978 400 4 F2
1973 500 4 (Euro Spec)
1973 550 4 (US import)
Thanks
I've been toying with getting back on a bike and I rather fancy one of these older models, just need to confirm the power for license etc
If they are over 33bhp (which I guess the 5's will be) is restriction of these older ones do-able?
Oh, and if the claimed BHP is close to 33bhp at time of manufacture, is it possible that the engine no longer makes that (ie get it dyno'd and get a cert that way?)
Cheers for any info.....
You can definately get restirctor kits for 400-4 Honda's. The mate I did my test with had one resticted. Didn't know it was a 'real' BHP rather than a listed one (we were the first year of the restictions) - would've saved us all loads of dosh! 1978 400 4 F2
1973 500 4 (Euro Spec)
1973 550 4 (US import)
Thanks
I've been toying with getting back on a bike and I rather fancy one of these older models, just need to confirm the power for license etc
If they are over 33bhp (which I guess the 5's will be) is restriction of these older ones do-able?
Oh, and if the claimed BHP is close to 33bhp at time of manufacture, is it possible that the engine no longer makes that (ie get it dyno'd and get a cert that way?)
Cheers for any info.....
sprinter885 said:
Just curious- is the 33 bhp restriction based on "at rear wheel" figures or at crank?
Also-do all manufacturers abide by same definition in their quoted figures i.e. crank or rear wheel?
Its not defined anywhere whether its at the wheel or crank. Manufacture homoglation (sp?) figures are measured at the crank so its probably meant to be there but do you now anywhere that can measure the power at the crank?Also-do all manufacturers abide by same definition in their quoted figures i.e. crank or rear wheel?
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