B44 camshaft identification

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craigacc
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B44 camshaft identification

Post by craigacc »

Hi folks,

Working now on two B44 motors. Quick query:

Camshaft has a V stamp on the side of the inner lobe. Which camshaft is this please? Can anyone help?
Triumph T25T 1971.
Ongoing B40 and B44 engine projects. Plus several other British Motorcycles
Cornwall, UK.
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kommando
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Re: B44 camshaft identification

Post by kommando »

The camwheel is detachable and could be put back on the wrong way round, there is normally on the later cams a V on the other side as the timing mark, so what marks have you got on the other side.
craigacc
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Re: B44 camshaft identification

Post by craigacc »

It's on the side of the inner lobe, not on the timing wheel - the V stamp is on the camshaft itself.

The timing wheel is fitted correctly and the timing mark has an H against it, which I was also curious about.
Triumph T25T 1971.
Ongoing B40 and B44 engine projects. Plus several other British Motorcycles
Cornwall, UK.
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kommando
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Re: B44 camshaft identification

Post by kommando »

The early ones had E stamped for Victor Enduro as opposed to the GP cam, after the GP was finished the E was dropped as the production line only worked with 1 B44/B25 cam profile until the B50MX, maybe the V was for the GP, never seen one to know. The WDB40 cam was so different in profile it identified itself.
Momus
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Re: B44 camshaft identification

Post by Momus »

I have a cam from a B44, both journals nominal .750" diameter. It has an 'S' stamped on the inner end.
Smallish base circle..anyone have an ID?
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craigacc
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Re: B44 camshaft identification

Post by craigacc »

Thanks for all the comments.

Both lobes have a flat rather than pointed top, which may suggest the GP profile. The cam is in good shape, no ridges or steps.

Would be interesting to know for sure.
Triumph T25T 1971.
Ongoing B40 and B44 engine projects. Plus several other British Motorcycles
Cornwall, UK.
B44Claus
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Re: B44 camshaft identification

Post by B44Claus »

Hi Craig,

Th Victor GP cam I have has a "V" on the side of the cam lobe:
41-0584a.jpg
Brgds,
Claus
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craigacc
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Re: B44 camshaft identification

Post by craigacc »

Thanks. Yes matches my profile as well, so that’s resolved. Mine came out of a B44 EA numbered motor.

What characteristics can I expect from the GP cam?
Triumph T25T 1971.
Ongoing B40 and B44 engine projects. Plus several other British Motorcycles
Cornwall, UK.
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kommando
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Re: B44 camshaft identification

Post by kommando »

Better low end grunt, lifts the front wheel in 1st and 2nd on mine even with high gearing, runs out of puff about 5k unless you adjust can timing a bit, think you aim for inlet opening mid point of 105 for better top end.
craigacc
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Re: B44 camshaft identification

Post by craigacc »

Thanks for that info. Appreciated.
Triumph T25T 1971.
Ongoing B40 and B44 engine projects. Plus several other British Motorcycles
Cornwall, UK.
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