robgeev Posted August 29, 2007 Report Share Posted August 29, 2007 Just surfing to try and find the ideal camshaft for my 6, found this comparison chart. Lots of information, maybe helpfull? Who knows! Cams. Rob. Quote Link to post Share on other sites
stuart Posted August 29, 2007 Report Share Posted August 29, 2007 Just surfing to try and find the ideal camshaft for my 6, found this comparison chart.Lots of information, maybe helpfull? Who knows! Cams. Rob. Useful site Rob well spotted. Stuart. Quote Link to post Share on other sites
Andy Moltu Posted August 29, 2007 Report Share Posted August 29, 2007 Anyone know what the abbreviations ECA & ICA stand for? Quote Link to post Share on other sites
robgeev Posted August 29, 2007 Author Report Share Posted August 29, 2007 (edited) Looking at Moss's choices, fast road 83 and fast road 89 are looking tempting, specs below-any experience with either? SPECS BELOW FOR BOTH 83 FIRST (TT10405N) Very good all round cam for fast road and traffic conditions. Inlet Timing: 36-74 Exhaust Timing: 58-34 Duration: 290 degrees Lift: 0.293" Installation Figure: 106 degrees Inlet Clearance: 0.014" Exhaust Clearance: 0.014" Power Band: 2750-6250 Fast road 89 below.TT12041N Very good cam with more lift than F/R 83 better mid range and top end power. Inlet Timing: 37-63 Exhaust Timing: 74-28 Duration: 280 degrees Lift: 0.288" Installation Figure: 103 degrees Inlet Clearance: 0.022" Exhaust Clearance: 0.024" Power Band: 2500-6000 Edited August 29, 2007 by robgeev Quote Link to post Share on other sites
TIMS Posted August 29, 2007 Report Share Posted August 29, 2007 Guys Use the link that Rob put on and then back off the last part of the URL. The main site has got some usefull info. I quite like the Gear Speed Calculator. Regards Tim Quote Link to post Share on other sites
JohnC Posted August 30, 2007 Report Share Posted August 30, 2007 Anyone know what the abbreviations ECA & ICA stand for? There's another page with the definitions here: ICA Inlet Centerline Angle - angle at which the inlet lobe is at full lift - forwards from TDC. ECA Exhaust Centerline Angle - angle at which the exhaust lobe is at full lift - backwards from TDC. LCA Lobe Center Angle - angle between LCA and ICA. Incidentally, I assume the timings are all valve at seat - any thoughts? I do know that some cam grinders prefer to quote ate 0.050" lift, on the basis that this gives a better idea of the working profile (something about the ramp shape distorting seat values). Cheers, John Quote Link to post Share on other sites
Roger H Posted August 30, 2007 Report Share Posted August 30, 2007 This may also be useful for you....... http://triumph.hottr6.com/tr6cams.html Quote Link to post Share on other sites
Andy Moltu Posted August 30, 2007 Report Share Posted August 30, 2007 There's another page with the definitions here:ICA Inlet Centerline Angle - angle at which the inlet lobe is at full lift - forwards from TDC. ECA Exhaust Centerline Angle - angle at which the exhaust lobe is at full lift - backwards from TDC. LCA Lobe Center Angle - angle between LCA and ICA. Incidentally, I assume the timings are all valve at seat - any thoughts? I do know that some cam grinders prefer to quote ate 0.050" lift, on the basis that this gives a better idea of the working profile (something about the ramp shape distorting seat values). Cheers, John Thanks John. I'm pretty sure that the lifts quoted are valve measurments rather then cam lobe. Quote Link to post Share on other sites
robgeev Posted August 30, 2007 Author Report Share Posted August 30, 2007 Decided to stick with the Triumph Tune fast road cam from Moss, this is the one that was fitted previously, and was nice to drive, very definite "power band" coming in at about 3000 rpm, don't want to risk low end tractability for the sake of a couple of 6000rpm bhp, as in reality most people will be driving sensibly most of the time! Rob. Quote Link to post Share on other sites
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