01zx12r
Expert Class
Posts: 338
|
posted November 28, 2003 03:10 PM
Camshaft Info
Im not ready to spend 1300 on cams but ive hear of a few guys swapping intake or exhaust cams? Anyone have any info on this? How much did you gain/loose. What did you feel different in the bike? Thanks...Chris
____________
Lovett Racing/Pedigo Performance
8.40 @170
  
|
RAC4IT
Needs a job
Bergie
Posts: 3009
|
posted November 28, 2003 03:48 PM
save your money until you can go big
|
01zx12r
Expert Class
Posts: 338
|
posted November 28, 2003 04:40 PM
That really wasnt the answer I was looking for. Prove to me its worth the cash and I dont have a problem with it. 5hp for 1200 isnt dollar smart to me. Im curious on options and results.
____________
Lovett Racing/Pedigo Performance
8.40 @170
|
keith
Expert Class
Posts: 155
|
posted November 29, 2003 06:05 AM
I read of a chap using two inlet cams which will give you more duration (6 degrees) on the exhaust valves and more lift (.014") which apparently worked well. I've had my cams reprofiled for a lot less than 1200 dollars. Going to the dyno on Tuesday and will post some info then on whether its an improvement or not. Last dyno test with stock cams, 1270, full Akro, head cleaned up, 199 rwhp. Keith (UK)
|
RAC4IT
Needs a job
Bergie
Posts: 3009
|
posted November 29, 2003 12:03 PM
Want proof? Ok here- How about repeated 207 MPH trapspeeds at Maxton N/A! Tim Haig's ZX12R ridden by Chad and Zack Millholland at the last Maxton is solid proof the big cams work in the real world, not on paper or the dyno.
|
keith
Expert Class
Posts: 155
|
posted November 30, 2003 12:33 AM
Bergie - We can expect an improvement on our 205.5 mph mile on stock cams then? I hope! Keith
|
keith
Expert Class
Posts: 155
|
posted December 02, 2003 01:24 AM
Sorry guys - wifey very ill overnight - can't leave her to drive 250 miles to the dyno - will have to make the trip when she's feeling better. Will post the results a.s.a.p. Keith
|
rac4it
Needs a job
Bergie
Posts: 3009
|
posted December 02, 2003 06:40 AM
I'm a believer now because I saw it for myself. Prior to this I was not, and I've told people to skip them. I've been told by several reputable engine builders to leave the 12R cams alone they are fine as is and the performance gain vs. cost is not worth it. Well, Lee sells intake on the exhaust, which is what I have had for a while now and a less expensive alternative. Carpenter and Muzzys are selling big cams now for larger than stock displacement engines, but they are expensive because you should do springs and retainers to match. Take it all for what it's worth but repeated 207 MPH runs back to back naturally aspirated is no joke. I'll be trying out the larger cams as soon as my wallet can afford them.
|
RobMuzzy
Expert Class
Posts: 295
|
posted December 04, 2003 10:18 AM
It is possible to use the intake cam on the exhaust side but be warned the spacing of the cam buckets is different and the possibility of failure is real.
|
1bad12r
Zone Head
Posts: 567
|
posted December 05, 2003 04:42 AM
Boy, you never know who'll come out the wood work in tha off season.
____________
768 Ryderz
------------
|
keith
Expert Class
Posts: 155
|
posted December 10, 2003 09:56 AM
Yep - checked the standard cams and the lobe spacing is quite a bit different between the inlet and exhaust cams so Rob Muzzy has made a very good point. Thanks. Keith
|
|
|
HOME
NEW TOPIC