Identifying camshafts

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norwegian
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Identifying camshafts

Post by norwegian »

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

Post by StormyRob »

norwegian wrote: Sun Oct 08, 2017 9:14 am 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?!
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norwegian
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Re: Identifying camshafts

Post by 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
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Re: Identifying camshafts

Post by norwegian »

And whith a few other mods as cbr front and sp swingarm
20170927_182707.jpg
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StormyRob
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Re: Identifying camshafts

Post by StormyRob »

Well that is fantastic. Would love to stumble onto some
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E.Marquez
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Re: Identifying camshafts

Post by E.Marquez »

norwegian wrote: Sun Oct 08, 2017 11:03 am 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
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norwegian
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Re: Identifying camshafts

Post by 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
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Wicky
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Re: Identifying camshafts

Post by 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.
Last edited by Wicky on Sun Oct 08, 2017 4:20 pm, edited 2 times in total.
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VTRDark
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Re: Identifying camshafts

Post by 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.
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E.Marquez
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Re: Identifying camshafts

Post by E.Marquez »

norwegian wrote: Sun Oct 08, 2017 4:09 pm 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 :confused
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
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fabiostar
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Re: Identifying camshafts

Post by fabiostar »

That is proper impressive bhp by the way :thumbup:
the older i get,the faster i was :lol:
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StormyRob
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Re: Identifying camshafts

Post by 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
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Stephan
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Re: Identifying camshafts

Post by 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
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