USA-PI Posted December 17, 2017 Report Share Posted December 17, 2017 Hello to all, can anyone recommend where I can purchase a new OEM petrol injection camshaft. Looking for the one used in the early model TR6 and TR5's. Quote Link to post Share on other sites
had17462 Posted December 17, 2017 Report Share Posted December 17, 2017 Try Helen & Ray at Tr improvements in Essex Nick Quote Link to post Share on other sites
astontr6 Posted December 17, 2017 Report Share Posted December 17, 2017 Hi-USA PI! If you want a well made camshaft from a new blank, there are no re- grinds here. Go to Newman camshafts here in the UK, they do a full range of cams for TR's along with their special EN40B cam followers. I have used their cams for years including motor cycle ones never had a complaint! Bruce. Quote Link to post Share on other sites
barkerwilliams Posted December 17, 2017 Report Share Posted December 17, 2017 +1 newman & followers. Telephone and speak to them, nice & knowledgeable man. Alan Quote Link to post Share on other sites
Barbusmaximus Posted December 17, 2017 Report Share Posted December 17, 2017 Moss sl the 150 profile on a Newman blank https://www.moss-europe.co.uk/camshaft-307689.html?assoc=127577 Quote Link to post Share on other sites
TRTOM2498PI Posted December 17, 2017 Report Share Posted December 17, 2017 http://www.newman-cams.com/ Cheers. Quote Link to post Share on other sites
dingle Posted December 17, 2017 Report Share Posted December 17, 2017 Here is another source in the US-https://www.bpnorthwest.com/triumph/tr250-tr6/performance-parts/camshaft-tr250-tr6-gt6-150hp-spec-new.html They may have free shipping during the holidays. Berry Quote Link to post Share on other sites
Mike C Posted December 17, 2017 Report Share Posted December 17, 2017 http://www.newman-cams.com/ Cheers. Just a bit of a warning. I tried to look up "Camshafts" on the Newman site and Bitdefender stopped it due to a malware infection. I overrode the Bitdefender warning and Microsoft Win 10 security gave me the same warning. I'm no computer expert so I stopped looking, even though I've heard a lot of good things about Newman cams. Quote Link to post Share on other sites
DRD Posted December 18, 2017 Report Share Posted December 18, 2017 Just a bit of a warning. I tried to look up "Camshafts" on the Newman site and Bitdefender stopped it due to a malware infection. I overrode the Bitdefender warning and Microsoft Win 10 security gave me the same warning. I'm no computer expert so I stopped looking, even though I've heard a lot of good things about Newman cams. I had the same thing the other day, it ended up crashing my computer. Something nasty there Quote Link to post Share on other sites
Nigel A Posted December 18, 2017 Report Share Posted December 18, 2017 Just had a standard 150 cam fitted it was obtained from Moss but is in fact Newman cam What a difference after suffering rough running for several years due to the rubbish cam installed by the original engine builder who thankfully is no longer on the TR scene. Those of you who have suffered premature cam failure will know who I mean. Cheers Nigel Regards Nigel Quote Link to post Share on other sites
Tom Fremont Posted December 18, 2017 Report Share Posted December 18, 2017 For Newman fans: I've got a 1312@105 by them brand new if anyone wants one. 41/71/71/41 with 0.502" lift. With P.I. or Webers it can get to 200 BHP. Make me an offer. Cheers, Tom Quote Link to post Share on other sites
astontr6 Posted December 18, 2017 Report Share Posted December 18, 2017 Just had a standard 150 cam fitted it was obtained from Moss but is in fact Newman cam What a difference after suffering rough running for several years due to the rubbish cam installed by the original engine builder who thankfully is no longer on the TR scene. Those of you who have suffered premature cam failure will know who I mean. Cheers Nigel Regards Nigel Hi Nigel! I know what you mean but a lot of those re-ground camshafts were installed by restorers in good faith. I have the advantage of having served a 5 year English Tool-making Apprenticeship where most metal parts are heat treated. Therefore if you re-grind the profile on a camshaft, you grind off the .010" hardness layer into the soft metal and that is what happen to many TR owners like your self. The technical knowledge of many of the suppliers in this field is non existent! My experience last year with gearbox lay shafts is a prime example. Hope you have now got your car sorted? Bruce. Quote Link to post Share on other sites
Richard71 Posted December 22, 2017 Report Share Posted December 22, 2017 http://www.newman-cams.com/ Cheers. Tom, Your PM inbox I think may be full? Quote Link to post Share on other sites
Waldi Posted March 4, 2018 Report Share Posted March 4, 2018 Does anybody know where I can find the valve lift for a std CP cam (307689)? Is not in the WSM. On Chris Witors site I see the cam lift is .250. Im asking because Ive bought valve guides from Goodparts with the small seals, to want to verify if I need to lower or shorten the guides (standard is 16.0 mm above the head). Thanks, Waldi Quote Link to post Share on other sites
Waldi Posted March 4, 2018 Report Share Posted March 4, 2018 (edited) Sorry, Double post. Waldi Edited March 4, 2018 by Waldi Quote Link to post Share on other sites
John L Posted March 4, 2018 Report Share Posted March 4, 2018 Mine was 0.250" before I took it out. John Quote Link to post Share on other sites
Waldi Posted March 4, 2018 Report Share Posted March 4, 2018 Hi John, Do you mean the cam (tappet) lift or the valve lift? Thanks, Waldi Quote Link to post Share on other sites
RogerH Posted March 4, 2018 Report Share Posted March 4, 2018 Hi Waldi, can you measure the rocker arm (or cy head hole spacings) to get the leverage ratio - it should be fairly straight forward Roger Quote Link to post Share on other sites
astontr6 Posted March 4, 2018 Report Share Posted March 4, 2018 Hi John, Do you mean the cam (tappet) lift or the valve lift? Thanks, Waldi Hi Waldi! According to Chris Whitor's data sheet it has a cam-lift of 0.250" Bruce. Quote Link to post Share on other sites
astontr6 Posted March 4, 2018 Report Share Posted March 4, 2018 Moss sl the 150 profile on a Newman blank https://www.moss-europe.co.uk/camshaft-307689.html?assoc=127577 I have been told that Moss are now buying Newman cams as at one point they had 100% failure with their re-grinds and customer were giving their management a lot of fighting talk and solicitor's letters dropping in through the post. But it has taken them over 20 years to get the message that their re-grinds were NFG! Bruce. Quote Link to post Share on other sites
Waldi Posted March 4, 2018 Report Share Posted March 4, 2018 Hi Waldi, can you measure the rocker arm (or cy head hole spacings) to get the leverage ratio - it should be fairly straight forward Roger Hi Roger, Thanks, I considered that but was not sure it that would be correct, so asked the more knowledgeable people. I have read somewhere that the standard rocker ratio is 1.46 The valve clearance (10 thou or 0,01) should be deducted from the valve lift I guess, since this is lost motion. That will then result in a valve lift of: 0,25 x 1.46 - 0.01 = 0,355 (or 9,02 mm) I stand to be corrected Regards, Waldi Quote Link to post Share on other sites
John L Posted March 4, 2018 Report Share Posted March 4, 2018 Waldi The cam lift was measured on the top of the pushrod without the rocker shaft fitted. John Quote Link to post Share on other sites
Waldi Posted March 4, 2018 Report Share Posted March 4, 2018 John, Thanks, that is what I thought. Does this mean my above calculation is not correct (sorry if Im looking to be a smart ..s, that is not the intention)? Waldi Quote Link to post Share on other sites
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