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Performance Cams

Posted: December 17th, 2012, 5:33 pm
by mennis
Hey every one!
Has any one every put a performance camshaft in a 06 tj ? Iv been looking for a cam for my year but no one seems to make one any help will be appreciated.
Thanks

Re: Performance Cams

Posted: December 17th, 2012, 8:22 pm
by SilverXJ
There is an aftermarket blank available now. I talked to Crane, Comp, Isky and Jones Cams. Crane, Comp and Isky said they couldn't get the blank and wouldn't even bother checking for me. Jones Cams came highly recommended by the people on speedtalk.com. After a few calls back and forth with his blank supplier he was able to locate a cam blank. He was able to grind me a custom cam. www.jonescams.com/

Re: Performance Cams

Posted: December 18th, 2012, 5:38 am
by CobraMarty
Didn't you have to use a ?offset key for the cam sprocket with that Jones Cam?

Re: Performance Cams

Posted: December 18th, 2012, 8:10 am
by SilverXJ
Yeah, so?

Re: Performance Cams

Posted: December 18th, 2012, 8:27 am
by CobraMarty
Not so, but can you explain. What degree and why?

Re: Performance Cams

Posted: December 18th, 2012, 10:05 am
by SilverXJ
It say why right in my thread.

Re: Performance Cams

Posted: December 18th, 2012, 12:23 pm
by CobraMarty
SilverXJ wrote:It say why right in my thread.
You can piss on me all you want buddy, but maybe you can give an attempt at an explaination to the OP.

Re: Performance Cams

Posted: December 18th, 2012, 12:34 pm
by SilverXJ
You brought it up, you can explain it. Its in my build thread, and I don't feel the need to repost everything. His grind will most likely be different than mine so his results will be different.

Re: Performance Cams

Posted: December 20th, 2012, 3:32 pm
by CobraMarty
Thanks, I found the info in your thread--

...I went with a 260*/204* duration, .472" lift on the intake and 264*/208* duration with .478" on the exhaust. LCA 113*, 109* intake center line.
When I removed the Hesco cam the cam bearings looked fine with no wear. I used a stock style silent link timing set. Initially the cam end play was at .007", but I wanted it tighter. After a bunch of figure 8s on sand paper with the gear I landed on .004", which is what I wanted. The only hitch with the install was that when I went to degree it the cam was 5* retarded. I fixed this by using a 4* crank woodruff key for a SBC (Mr. Gasket 988G). It needed some massaging to get it to fit 100%. Jones Cam's said that in order to grind advance into it he would need to reduce the base circle by .015" for every degree. That didn't sound like a good idea. So, it appears that the blank doe shave some draw backs. As is the cam 1* retarded, which I would doubt I will notice....

It looks like Jones Cams can grind any of these profiles.
248° 192° .446" with 1.6 ratio rockers
256° 200° .462"
260° 204° .472"
264° 208° .478"
268° 210° .480"
272° 216° .488"

Compare using - http://www.angelfire.com/my/fan/Jeep4.0Camshafts.htm

The 204*/208* .462"/.472" combination seems to be a good pick for a 4.0L or 4.6L.
It is a little less than a '231' or '232' and with less overlap and wider LCA.

Good choice.