Identifying camshafts

[norwegian]

Hi does any one know what camshafts these are and maby some technical data

[StormyRob]

Hi does any one know what camshafts these are and maby some technical data FOTCFBA1.jpg

They are Yoshi cams. You just randomly found them on your bike?!

[norwegian]

Well not exactly randomly.
I knew they weren't original as the engine was putting out125hp @the wheel
Bougt the bike in 2012 and the previous owner had the engine build done so i knew just about what was in the engine but didn't get all the technical info from him.
And many miles later it was time for rebuild and have put the engine all together again whith lot of goodies but am struggling whith tech info on the cams so i can time the engine right

[norwegian]

And whith a few other mods as cbr front and sp swingarm

[StormyRob]

Well that is fantastic. Would love to stumble onto some

[E.Marquez]

but am struggling whith tech info on the cams so i can time the engine right

If you have the cams, that IS the best source of "tech info"
timing wheel, piston stop, dial indicator
Thats all you need

[norwegian]

Yes that's how it will be done of course but it would have been lovely to know a little bit more about them

[Wicky]

Looks like a Moriwaki Engineering logo - shoot 'em an email with the photo to Japan or Roger Ditchfield here in the UK.

Alternatively pop into a Japanese restaurant to get them to confirm the translation of the logo.

[VTRDark]

If you have the cams, that IS the best source of "tech info"
timing wheel, piston stop, dial indicator
Thats all you need

+1 on that.

Camshaft manufactures are never going to give the true specs of their cams and more to the point how they came to the numbers they do provide. They get to those numbers by various methods of measurement as a way to try and prevent other manufactures copying them. They keep their tech info a closely guarded secret.

[E.Marquez]

Yes that's how it will be done of course but it would have been lovely to know a little bit more about them

I cant find anything listed on the net
Yosh once they no longer make a part currently seems to just drop all data as well.

And well, I would not trust any catalog data anyway, and since its the same work to confirm lift, opening, closing, duration, ect as it is measure.....I honestly would not waste any time researching specs... History and R&D background perhaps, design goals ect yes.. but specs? Nope

[fabiostar]

That is proper impressive bhp by the way

[StormyRob]

I did a bit of research. Seems those cams are actually bad for engines.

However I am happy to help you out and will give you the scrap value mate. 4 quid or so?

Fine. 5 pounds

[Stephan]

I posted some info in two replies here on page 351, see second reply. The specs are just taken from posts on superhawkforum.

http://www.vtr1000.org/phpBB3/viewtopic ... 05#p445697