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The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> camshafts
Post Info TOPIC: camshafts
JOHNYBOY


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i have stripped a cylinder head to do valves stem seals & shim up how do i know i have the inlet cam in its right place in the head & ex cam how do i identify them i dont know if someone has had them out & just popped em back anywhere i shall overall the head & put cams back in then shim up on the bench before i finally put it on my ttr which i am running at the moment but when it is left upon start up it smokes so stem seals needed



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TTRfan


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The camshafts are the same for both inlet and exhaust John. If you are re-shimming then you will be OK if they are swapped over wink

Valve stem oil seals here



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JOHNYBOY


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thanks brian what about the cam sprockets

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TTRfan


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When the cams are in this position

Cam_lobes_at_TDC.JPG

the sprockets should look like this

Camshafts.jpg



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JOHNYBOY


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CAN YOU GET THE CAM SPROCKETS ON THE WRONG CAM

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JOHNYBOY


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come on brian where are you pal have y been out enjoying the weather & sampling a few beers

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ttr steve


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He is on a Guinness sampling tour smilewink

Just checked for you......Cam sprockets are the same.

Steve



-- Edited by ttr steve on Monday 29th of August 2016 09:19:27 PM

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mossproof


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I think Brian's taking a break John. I think if you put them in with the cam lobes in the position shown and the sprockets marks don't line up, then yes you can get them mixed up. BUT I think they'll be so far out it will be obvious. If they're all in bits it's not difficult to experiment a bit.


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ttr steve


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Have you removed the sprockets from the camshafts?



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JOHNYBOY


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no steve but its an engine partially stripped then thrown together to make it a lump possible would never run all I need is the head to recon for my ttr brian says the camshafts are the same inl and ex but don't know about the cam sprockets

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ttr steve


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If you have not removed the cam sprockets from the camshafts, then follow Simons advice and Line them up like the picturesmile

If needed give me a call in the morning, contact details are on the shop.

Steve



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