mike3md Posted May 1, 2013 Report Share Posted May 1, 2013 Dear All, I have tried various searches on here and can't seem to find info on how to identify the cam profile (lift/duration etc) when it is in the car. A new 4 (to me) came with a bunch of bills which indicate it may have a fast road cam (eg Moss TT 1004 ), so if anybody can point towards the method which I am sure I have seen here somewhere I would be grateful. Mike Quote Link to post Share on other sites
Paul Harvey Posted May 1, 2013 Report Share Posted May 1, 2013 Mike, I have that cam in my recently rebuilt engine and the normal question that arises is what tappet clearance to set. Despite various authoritative statements on the Forum I am assured that cams are extremely complicated and can only be set properly on a rolling road by someone with suitable knowledge and information about the intended use of the car. The duration will vary significantly depending on the tappet clearance and anything from 13 thou to 24 thou can be correct. Correct ignition timing will also be affected. I realise I am not answering the question you are answering, but it may give a route to getting the best from your engine. I don't personally know any of this - but I know the man and the rolling road that does! Quote Link to post Share on other sites
Alec Pringle Posted May 1, 2013 Report Share Posted May 1, 2013 This might help http://ls1tech.com/forums/generation-iii-internal-engine/294029-how-determine-cam-specifications-unknown-cam.html A method that ought to enable you to confirm what cam you have, assuming it's one of the standard proprietary offerings. As Paul observes, it's worth getting a tuned engine properly set up by a competent rolling road man who knows TRs. Cheers Alec Quote Link to post Share on other sites
terry Posted May 2, 2013 Report Share Posted May 2, 2013 (edited) here are some timing details,for your Moss cam..inlet,.37-63,......exhaust,..73-37,...duration,..280 degrees. lift,..0.300".......vc 0.022" inlet,.....0.024" exhaust install figure,..103 degrees. now compare with a fast road cam as supplied to me some years ago by Tr Enterprises,which in my opinion is a better fast road cam. inlet,..36-56,.....exhaust,...56-36,...valve lift 0.448" inlet,...0.448 exhaust. vc,..0.014 inlet ,...0.016"exhaust. full lift at 110 degrees both inlet and exhaust add,.. forgot to say that the tr enterprises cam was for use in a modified and skimmed head with extractor manifold and twin 45 dcoe webbers. Edited May 2, 2013 by terry Quote Link to post Share on other sites
Paul Harvey Posted May 2, 2013 Report Share Posted May 2, 2013 simples Quote Link to post Share on other sites
Badfrog Posted May 2, 2013 Report Share Posted May 2, 2013 (edited) Hi Mike, I went thru this with my TR4. Chris59, who's often on this forum does the heavy mechanics for me. I asked him to identify a mysterious cam I had in the engine, which I was sure was not set properly. See: http://www.tr-register.co.uk/forums/index.php?/topic/38458-the-final-word-on-camshaft/?hl=kastner Chris was able to read ID numbers on the cam from underneath, with sump removed, without dismantling anything else. He also designed a contraption to monitor valve movements on the engine "in car" again without any dismantling. Turned out I had a Kastner D cam, requiring 109° setting which was installed at the regular 103°. No need to tell the car was transformed when proprely set. I think Chris will chime in and give you more info on his device. The best document for cam setting data is this one: Badfrog Edited May 2, 2013 by Badfrog Quote Link to post Share on other sites
Paul Harvey Posted May 2, 2013 Report Share Posted May 2, 2013 even more simples Quote Link to post Share on other sites
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