So JWT has a new Turbo cam A. Well let me tell you a little about this cam. I could be wrong, but it seems they have adopted a grind I designed and now are making a few bucks off of it. That really sucks.
I built my engine a year or so ago, you can look on the zcar archive and find my posts still I think. But one thing I did when I built my engine was to design a cam grind for my engine. Now I talked with Clark about their cams and they had no cams for sale, but what they did have is some old racer brown billets and two grind specs from racer brown. I decided it was time for me to come up with a grind for the cylinder head as it was at Robello being built and they needed a cam and I told them I was going with a custom grind on my car. I had Elgin cams grind a cam for me and that was installed on my cylinder head.
I got the car running and took it down to JWT for tuning. This process took quite a long time, about 8 months to finally get the car completed.
In the process of all this, there was another guy there getting his car tuned, Mark, and it was a little different then my car, but basically the same build and more importantly the same turbo, and the same fuel management as my car. I called Dave at Robello for something one day and he imformed me the JWT had called him regarding my engine, because they were impressed with the Hp my engine at the boost levels they were running as compaired to Marks car. I thought that was interesting at the time and it made me laugh a little.
I did run some numbers by Clark on my cam design and did not get to much of a response from him on his thoughts of how it would run.
Now I find all of the sudden they have a new Turbo cam grind, and I read all of your posts and it sounds like you are describing my cam. So if you want to know the exact grind of the cam here you go.
All measurements are taken @.015 thousands.
Intake= 21 BTC closes= 65 After BDC
Exhaust= 65 BDC closes= 21 After TDC
Lift intake= .485
Lift Exhaust= .485
Lobe center= intake 112 degrees
Lobe center= exhaust 112 degrees
Duration= 266 degrees (do the math for the lobe degrees)
Overlap= 42 degrees
Does that sound like what they have come up with to you?????? Sure as hell sounds like it to me. You want to see how the cam works in the engine, take a look at my web page at the dyno thumb and you will see just what this cam does.
This really Pisses me off, but I got a little surprise for them, this was my proto cam grind, just to get me in the ball park of what I need to do to go to the next step with this cam grind, and believe me the final grind will be much more refined then this grind, and nobody will steal that grind, because I will have a patent on the specs. No wonder it took so damn long to get my car tuned, they were taking my design ideas and now they are making money to the tune of 600.00 bucks per cam for my investment and MY time. They may have come up with a modified ramp on the lobes to inhibit resonation in the cam, but you know what, that is what Sunbelt did with the head earlier then JWT did, and that is why I was planning on having Sunbelt do my final build, so they could flow match each cylinder and grind my cam to remove the resonance.
