Chris Wilson Posted April 2, 2011 Share Posted April 2, 2011 my local garage semi-tuner (does racing but im not fully aware how good his skills are) reckons a set of vernier pulleys would do the job for tuning but i did read ecu management would be a more reliable option. whats involved with your cam doctor machine? im hoping to buy an NA-T kit soon and would like to get some of these cams and get them fitted at the same time? do you do the check after high lift? A Cam Doctor merely measures the profiles of a cam offf the engine and you get a print out like below, which is for some turbo cams for a 1.6 engine of mine. You NEED a mappable ecu and vernier pulleys to do the slightest bit of good with modified cam profiles. -------------------------------------------------------------------------------- CAM PRO PLUS Cam Card Report 11:42:59 08/10/2010 -------------------------------------------------------------------------------- Spec. Value ---------------- ----------------------------------------- File x:\Chris Wilson Direct acting mechanical profiles\D300-D399\D361.CPP Lobes I1 Lobe Separation ----- Cam Deg. Checking Height 0.010 Inch Valve Overlap ----- Crank Deg. Intake Exhaust ------------------- ------------------- Centerline 106.0 ATDC Open 44.8 BTDC Close 76.9 ABDC Duration 301.8 Crank Deg. Area 37.12 Inch Deg. Lash 0.0250 Inch Rocker Ratio 1.00 Peak Cam Lift 0.43405 Inch Peak Valve Lift 0.40905 Inch Lift @ TDC 0.1363 Inch ------------------------------------------------------------- Spec. Value ---------------- ----------------------------------------- Checking Height 0.039 Inch Valve Overlap ----- Crank Deg. Intake Exhaust ------------------- ------------------- Centerline 106.0 ATDC Open 21.3 BTDC Close 52.2 ABDC Duration 253.5 Crank Deg. Area 36.69 Inch Deg. Lash 0.0250 Inch Rocker Ratio 1.00 Peak Cam Lift 0.43405 Inch Peak Valve Lift 0.40905 Inch Lift @ TDC 0.1363 Inch Quote Link to comment Share on other sites More sharing options...
Neil-NA Posted April 2, 2011 Author Share Posted April 2, 2011 I'm just going to wait for Whifbitz to sort there manifold i think. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 2, 2011 Share Posted April 2, 2011 T.T. inlet cams are a drop in fit and it would be simpler in the long run to ditch the distributor and change to coil packs, you could then run the T.T. exhaust cams too. That would indeed be the best way to go, but then you are still limited to profiles designed for a supercharged engine, not an N/A. Not having to machine a didi drive gear would make cam *Manufacture* (rather than re profiling) cheaper and easier. Quote Link to comment Share on other sites More sharing options...
David P Posted April 2, 2011 Share Posted April 2, 2011 I'm just going to wait for Whifbitz to sort there manifold i think. I hope your grandchildren will enjoy fitting it for you. Quote Link to comment Share on other sites More sharing options...
Noz Posted April 2, 2011 Share Posted April 2, 2011 would you have to get new non dizzy cams re shimmed as well? im assuming this would be a standard course of action with new cams? Quote Link to comment Share on other sites More sharing options...
David P Posted April 2, 2011 Share Posted April 2, 2011 (edited) That would indeed be the best way to go, but then you are still limited to profiles designed for a supercharged engine, not an N/A. Not having to machine a didi drive gear would make cam *Manufacture* (rather than re profiling) cheaper and easier. Titan claim to be making cams for the N/A but they are as elusive as Whizzbang Fannymoulds. Edited April 2, 2011 by David P (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 2, 2011 Share Posted April 2, 2011 would you have to get new non dizzy cams re shimmed as well? im assuming this would be a standard course of action with new cams? Virtually every time you change cams the valve clearances will all need re shimming. Even more so with cams that are made from old cores. Quote Link to comment Share on other sites More sharing options...
David P Posted April 2, 2011 Share Posted April 2, 2011 That would indeed be the best way to go, but then you are still limited to profiles designed for a supercharged engine, not an N/A. Not having to machine a didi drive gear would make cam *Manufacture* (rather than re profiling) cheaper and easier. That would be a 'niggle', but could be compensated with adjustable cam gears. "designed for a supercharged engine" Quote Link to comment Share on other sites More sharing options...
H7ERO Posted April 7, 2011 Share Posted April 7, 2011 (edited) Technical issues asside Na engines are disposable in value 100-150 second hand, If I thought cams would do for me what i wanted i would try them, even though it seems a bodge what they do (welding then regrinding) is comon industry practice and as mentioned befor several compnanies would do it in the uk and i would imagine mnny racing teams use reground cams (especially when they maybe testing several profiles) without issue The major issue would be longevity in the valvetrain but this is comprimised anyway with any 'larger cam' profile who really cares? its a cheap car with a cheap and easy engine to replace and you want to see what you can get out of it just do it Iv driven/ worked a few cars which have used a rising rate FPR to provide the extra fueling too with success (a hell of a lot cheaper than a programable ECU) again might seem like a bodge but it does work I personally would steer clear of TTC as a friend of mine has had a lot of problems with their products, especially when u long established uk companies speicialise in this area I have been personally researching cams extensivly for my V8 as i want to develop NA power i fitted cams befor to a 4A engine its not what you would describe as bang for buck IMO, I dont know if id do it or can justify it again Edited April 7, 2011 by H7ERO looked up TTC (see edit history) Quote Link to comment Share on other sites More sharing options...
Noz Posted April 8, 2011 Share Posted April 8, 2011 any idea on good UK companies that would be able to do this process instead of TTC? Quote Link to comment Share on other sites More sharing options...
Noz Posted April 8, 2011 Share Posted April 8, 2011 i just emailed Kent Cams about such a service. il post when i get a response. im going to dyno soon, then cam it up then dyno after and check results. i might be shooting myself in the foot, but at least it will be fun trying to get more bhp without a turbo hopefully such a process AND a NA-T kit would be a final target for engine mods. after that its probably not worth it due to cost. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 8, 2011 Share Posted April 8, 2011 I listed them earlier in the thread. There's also David Newman Camshafts. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 8, 2011 Share Posted April 8, 2011 I listed them earlier in the thread. There's also David Newman Camshafts. http://www.newman-cams.com/index.html Quote Link to comment Share on other sites More sharing options...
Noz Posted April 8, 2011 Share Posted April 8, 2011 ok thanks, ive emailed Newman cams. Kent Cams will regrind the cams for: 325 + VAT. im confused on how they can increase lift without adding material. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 8, 2011 Share Posted April 8, 2011 They take it off the base circle, so you will need thicker shims, possibly custom made ones. They can probably do some custom shims as well, but they will need finish grinding to size when the cams are installed. Quote Link to comment Share on other sites More sharing options...
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