leonnewman1 Posted August 26, 2018 Report Share Posted August 26, 2018 Hi, i was wondering if somebody could please help me identify my piper camshaft so that i can set clearances accurately. I have a couple of bit of information: 1. On the installation receipt it says TR4 CAM to 3TR Spec and on another piece of paper it refers to the cam as a yellow piper 2. The cam duration is 300 and full lift is 110 I cant seem to match this cam to anything on the piper website. Any ideas amongst you lot? thanks Quote Link to post Share on other sites
RogerH Posted August 26, 2018 Report Share Posted August 26, 2018 Hi Leon, welcome to the forum. Have a look here http://www.tildentechnologies.com/Cams/TriumphCams.html not many 300' duration cams on there Why not give Piper a call. Roger Quote Link to post Share on other sites
leonnewman1 Posted August 26, 2018 Author Report Share Posted August 26, 2018 hi so i have found some more info on the cam: Timing Open Close Dur VL VC FL Inlet 40 80 300 0.452 0.014 110 Exhaust 80 40 300 0.450 0.016 110 does that mean i should be setting the valve clearances at 0.014 and 0.016? thanks Quote Link to post Share on other sites
leonnewman1 Posted August 26, 2018 Author Report Share Posted August 26, 2018 Timing Open Close Dur VL VC FL Inlet 40 80 300 0.452 0.014 110 Exhaust 80 40 300 0.450 0.016 110 Quote Link to post Share on other sites
leonnewman1 Posted August 26, 2018 Author Report Share Posted August 26, 2018 sorry trying to copy a table or image but struggling Quote Link to post Share on other sites
leonnewman1 Posted August 26, 2018 Author Report Share Posted August 26, 2018 (edited) here we go Edited August 26, 2018 by leonnewman1 Quote Link to post Share on other sites
Fireman049 Posted August 26, 2018 Report Share Posted August 26, 2018 Hi Leon ~ I hope that this may be of some help? Tom. https://www.pipercams.co.uk/Camshafts-Car/Make-Triumph/Engine-TRIUMPH-TR-2-3-4/ Quote Link to post Share on other sites
monty Posted August 26, 2018 Report Share Posted August 26, 2018 hi so i have found some more info on the cam: Timing Open Close Dur VL VC FL Inlet 40 80 300 0.452 0.014 110 Exhaust 80 40 300 0.450 0.016 110 does that mean i should be setting the valve clearances at 0.014 and 0.016? thanks That looks correct to me. My cam (Racetorations) is similar & clearances for mine are around 0.020/0.022. Which I think are a little wide. Quote Link to post Share on other sites
Mick Forey Posted August 26, 2018 Report Share Posted August 26, 2018 Tom Boyd may be able to confirm this but I believe TR Enterprises sells a Piper cam that TRE calls "Yellow", I thought it was a 3TA spec. I fitted one to my TR3 a few years ago and kept the box for ages but I have just checked and it got binned at the last clear out, sorry. I selected it as it was described as a high torque cam. I don't race, rally or drive more than spirited at times but wanted great pulling power for effortless touring. It does the job for me, an excellent cam. Same lift as standard TR3 cam but with a bit longer opening. I use standard 10 thou cold clearance. If you go to 12 thou you can hear it rattle, not nice. Mick Quote Link to post Share on other sites
Tom Boyd Posted August 26, 2018 Report Share Posted August 26, 2018 Hi, the 3TY &3TR (4 cyl) are Piper cams to our profiles The above data sheet is correct Tom Quote Link to post Share on other sites
leonnewman1 Posted August 26, 2018 Author Report Share Posted August 26, 2018 perfect - set clearances as per spec. they were set at 0.01 inlet and exhaust - car is now idling lower and running cooler....... Quote Link to post Share on other sites
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