69vitesse Posted May 28, 2013 Share Posted May 28, 2013 Speaking with a very well respected Triumph outfit today about the best followers to use on my NOS PI cam…'Use good OEM Stanpart'No top new brands you can reccommend? Not really, they're all much of a muchness now, china/india, some good, some bad, no way of telling. You can only be sure with Stanpart.Bummer… :( Quote Link to comment Share on other sites More sharing options...
Hogie Posted May 28, 2013 Share Posted May 28, 2013 Have a word with Newman CamsRoger Quote Link to comment Share on other sites More sharing options...
thescrapman Posted May 28, 2013 Share Posted May 28, 2013 2601 wrote:Have a word with Newman CamsRogerDitto. Their higher spec items. Ought to be decent quality.Not cheap.CheersColin Quote Link to comment Share on other sites More sharing options...
69vitesse Posted May 28, 2013 Author Share Posted May 28, 2013 Thats the problem, 'ought to be'... :oWhen you get told of a cam/followers from a quality source eating itself in 12k miles, and high spec TR5 builds using recycled OEM to ensure reliability, you go, hmmmmmm.These things were made for pennies by the gazillion by Leyland and a hundred other other vendors, how hard can it be to produce these to a reliable quality?I'll probably ask Newmans about their cast iron ones if I can't police up a decent set from my two spare engines. Quote Link to comment Share on other sites More sharing options...
thescrapman Posted May 28, 2013 Share Posted May 28, 2013 It is the EN40B ones you need to ask about. Not cheap! They also do cast iron ones, which may actually be more suited to the NOS cam.I had a good chat to a Mr Newman at the Autosport show, very approachable guy. I think it was David Newman. Also went to their workshop and spoke to him.I have no reason to suspect their products are made anywhere apart from the UK.Talk to them about what you want to do.CheersColin Quote Link to comment Share on other sites More sharing options...
CRAJ Posted May 28, 2013 Share Posted May 28, 2013 The Newman website does state that you should spec the followers to match the cam (material wise), so that should be borne in mind, as too hard a follower may just cause problems with the cam, which echoes what Colin has said above.Colin Quote Link to comment Share on other sites More sharing options...
TedTaylor Posted May 28, 2013 Share Posted May 28, 2013 Don't mix old cam followers with a new cam or another cam because apparently wear patterns build up between new cam and new followers which will cause problems with an old one of either.Having said that, back in the 1970s when building my race/rally spec TR3 engine for my Morgan Plus4 I needed a set of followers for my new half race cam. Could only get seven from my local Triumph dealer (!) so took the best one of my other old ones and very carefully ground the surface on a piece of glass using fine valve seat paste until it just had an even all over matt surface.I then rebuilt the engine with the seven new followers and this old one. Worked a treat and survived over 6000 rpm in regular sustained bursts for nearly 20,000 miles including a lot of rallying.Not suggesting you do this unless it was absolutely necessary. Quote Link to comment Share on other sites More sharing options...
andy thompson Posted May 29, 2013 Share Posted May 29, 2013 I have used many combinations - most recently I have tried a tuftrided cam with newman cast followers - that gave very good results - after extremely hard use it showed no wear on the cams or the followers - I'd be very happy to re install it all if I wasn't changing cams.In my 2100 I have a tuftrided reground original cam using Wishbone Classics followers.One common theme is I have had no issues once the camshaft is tuftrided. All my (and Humphs) follower/cam issues have been with reground cams (non hardened) or cam on new blanks (non hardened). Quote Link to comment Share on other sites More sharing options...
andy thompson Posted May 29, 2013 Share Posted May 29, 2013 thescrapman wrote:It is the EN40B ones you need to ask about. Not cheap! They also do cast iron ones, which may actually be more suited to the NOS cam.I had a good chat to a Mr Newman at the Autosport show, very approachable guy. I think it was David Newman. Also went to their workshop and spoke to him.I have no reason to suspect their products are made anywhere apart from the UK.Talk to them about what you want to do.CheersColinI suspect that Newman cams raw castings have a very strong whiff of spices from the east - and further east than Turkey Quote Link to comment Share on other sites More sharing options...
nang Posted May 29, 2013 Share Posted May 29, 2013 My goodness, curried cam followers, (woot)Tony. Quote Link to comment Share on other sites More sharing options...
Greeks Posted May 29, 2013 Share Posted May 29, 2013 lagerzok wrote:I suspect that Newman cams raw castings have a very strong whiff of spices from the east - and further east than TurkeyArmenia?Azerbajdžan? Quote Link to comment Share on other sites More sharing options...
TRTOM2498 Posted May 29, 2013 Share Posted May 29, 2013 Agree with Andy T here.I have Newman steel followers in my TR6, with Newman cam. Several tracks days, a 10CR, and generally driven hard and no complaints at all.Cheers. Quote Link to comment Share on other sites More sharing options...
oil_on_the_carpet Posted May 29, 2013 Share Posted May 29, 2013 So the 'magic' seems to be to find a combination of hardness's that work together.Hard new followers with reground/OEM cam - cam wearsHard cam with unhardened followers - follower wearsNaturally OEM solves all these issues as the cam and followers will match in hardness and work harden together.The issue with a NOS cam is going to be finding followers that are not too soft or too hard, and being as how the vendors seem rather reluctant by and large to put a Rockwell number to their wares, that is not as easy as it looks.And yes, I was told that Newman now hails from East of Suez. Quote Link to comment Share on other sites More sharing options...
Richard B Posted May 29, 2013 Share Posted May 29, 2013 Getting the right combination of materials is essential. There will always be some wear it's just keeping it to manegable levels that is the difficulty.Several years ago Land-Rover had a cam problem due to the supplier of the cam buckets changing the material without telling them.The problem was caused by a supply issue, so not wanting to delay delivery to LR the manufacturer used a higher grade material for the buckets (figuring a higher grade would be better). Unfortunately the followers were too hard for the cam, thus wiping out the lobes in a very short time. This lead to a very expensive recall. Quote Link to comment Share on other sites More sharing options...
thescrapman Posted May 29, 2013 Share Posted May 29, 2013 2748 wrote:And yes, I was told that Newman now hails from East of Suez.You could try asking them the origins of the raw materials.CheersColin Quote Link to comment Share on other sites More sharing options...
oil_on_the_carpet Posted May 29, 2013 Share Posted May 29, 2013 Offhand, does anyone know the Rockwell hardness of an OEM cam? Quote Link to comment Share on other sites More sharing options...
andy thompson Posted May 29, 2013 Share Posted May 29, 2013 Well I know where the cams were cast about three years ago. Straight from Mr Newman. Not really an issue as many OE cams are made there. My most recent cam swap uses a new Kent blank that has been tuftrided - on balance I think I prefer the Kent blank as it retains the original style scrolled journals. Think they are from a Turkish foundry Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.