The end all discussion of cam gear
Originally Posted by bdking57
pruven performance evo runs on the stock cam gears.. david burschur recommends stock as well. adjustable cam gear bolts brake! happened to me and i have three pictures of the same pictures with broken bolts as well.. tell me its worth the risk please.. there is no need for them with 264/264 cams.. plus they cause major warranty/emmissions obstacles by having them on.
Pruven and Buschur have their reasons for not using adjustable cam gear. To arbitrarily presume that if they don't use it, then it doesn't work, is a faulty, erroneous conclusion.
The statement that cam gears cause 'emissions obstacles' is absolutely false. On the contrary, about the only way one will get a set of cams with long overlap to pass emissions is by use of cam gear that reduces overlap for the test. Therefore, the exact opposite of what you stated is the truth.
A 264/264 cam set doesn't have much duration to play with, and therefore will respond less to changes in cam timing. On the other hand, a 280 set responds very favorably to changes in cam timing.
There is dyno data posted in this forum that demonstrates this, but anyone who understands how valvetrain dynamics affect mechanical efficiency doesn't need dyno data to confirm basic facts of engine physics.
Last edited by Ted B; Aug 6, 2005 at 09:31 PM.
I used to also have "questions" about cam gears and adjusting them till I saw th magic of Howard TIME in San Juan this weekend. Properly degreeing the cams is a complex procees which takes alof of time and equipment and most imporatntly someone with years of experience.
I was cars picking up almost 50 whp with Howard Time's cam adjustment on the dyno in controlled testing today
His settings are nothing like "use -2 -2 " or anything like that - he sets the timing to match a particular engine set up
I was cars picking up almost 50 whp with Howard Time's cam adjustment on the dyno in controlled testing today
His settings are nothing like "use -2 -2 " or anything like that - he sets the timing to match a particular engine set up
Originally Posted by DynoFlash
I used to also have "questions" about cam gears and adjusting them till I saw th magic of Howard TIME in San Juan this weekend. Properly degreeing the cams is a complex procees which takes alof of time and equipment and most imporatntly someone with years of experience.
I was cars picking up almost 50 whp with Howard Time's cam adjustment on the dyno in controlled testing today
His settings are nothing like "use -2 -2 " or anything like that - he sets the timing to match a particular engine set up
I was cars picking up almost 50 whp with Howard Time's cam adjustment on the dyno in controlled testing today
His settings are nothing like "use -2 -2 " or anything like that - he sets the timing to match a particular engine set up
You've seen one, you've seen 'em all after a while... What's the secret???
WORKS uses cam gears, but only during R&D. When our 269 cams were being developed, we manipulated the cam settings to find the broad powerband we were after. Once that was achieved, the differentiation from stock was noted and integrated into the final design. Therefore, stock cam gears on the 269 cams give you the benefits of cam gears without any of the cost.
Ask Al about it, he saw it first hand here in Puerto Rico, Mr. Harold Time worked his magic on 3 EVO's down here, one was mine, Al wanted to test the cam gear thingy, so he asked my mechanic and Harold to remove the degree on my car and boom I lost 28 whp without the degree, Al told them to put it back on (the settings of course) and I put down a couple more of whp after Harold did some thingy there also my car improved greatly the torque. On another test Al asked the same, this guy lost 50 whp without the degree and of course Al said put it back in! So degreeing the cams of course it works on pump gas believe it or not I gained 4 more mph in the 1/4 mile. Used to run 12.5 @106 mph and now on pump gas 12.4 @110 no mods changed on my car, now I ran 12.1 @112 with a slipping clutch. And I have no problems launching my car Im always in the 1.6X area in the 60 ft.
We'll see what happens when I get a new clutch and I can put down to the track all my 356 whp and 384 tq. Tuned by Al from Dynoflash. Expect 11's in the near future from my 05 GSR with only 5k miles on it
Good luck, talk to Al, we are planning on making a trip to the USA and bring Harold with us to degree some cars, Al will handle that and will be done at Al's shop of preference.
Cheers
We'll see what happens when I get a new clutch and I can put down to the track all my 356 whp and 384 tq. Tuned by Al from Dynoflash. Expect 11's in the near future from my 05 GSR with only 5k miles on it
Good luck, talk to Al, we are planning on making a trip to the USA and bring Harold with us to degree some cars, Al will handle that and will be done at Al's shop of preference.
Cheers
Originally Posted by Randy
Ask Al about it, he saw it first hand here in Puerto Rico, Mr. Harold Time worked his magic on 3 EVO's down here, one was mine, Al wanted to test the cam gear thingy, so he asked my mechanic and Harold to remove the degree on my car and boom I lost 28 whp without the degree, Al told them to put it back on (the settings of course) and I put down a couple more of whp after Harold did some thingy there also my car improved greatly the torque. On another test Al asked the same, this guy lost 50 whp without the degree and of course Al said put it back in! So degreeing the cams of course it works on pump gas believe it or not I gained 4 more mph in the 1/4 mile. Used to run 12.5 @106 mph and now on pump gas 12.4 @110 no mods changed on my car, now I ran 12.1 @112 with a slipping clutch. And I have no problems launching my car Im always in the 1.6X area in the 60 ft.
We'll see what happens when I get a new clutch and I can put down to the track all my 356 whp and 384 tq. Tuned by Al from Dynoflash. Expect 11's in the near future from my 05 GSR with only 5k miles on it
Good luck, talk to Al, we are planning on making a trip to the USA and bring Harold with us to degree some cars, Al will handle that and will be done at Al's shop of preference.
Cheers
We'll see what happens when I get a new clutch and I can put down to the track all my 356 whp and 384 tq. Tuned by Al from Dynoflash. Expect 11's in the near future from my 05 GSR with only 5k miles on it
Good luck, talk to Al, we are planning on making a trip to the USA and bring Harold with us to degree some cars, Al will handle that and will be done at Al's shop of preference.
Cheers
No, when you degree the car the way Harold does it, cam gears always end up being in weird numbers, so Al decided on my car and the other guy to simply put the cam gears in 0 (remove the degree of course) and like I said I lost 28 whp and the other guy almost 50 whp (48) so degreeing the cams definately works, specially in the hands of someone that has been doing this for more than 20 years on all type of cars, my car was the first EVO he did and on pump gas the same day we took the car to the dyno and tested it and it gave my car some interesting numbers, specially in tq @22 psi it gave my car 23 pounds of tq. and almost 12 whp. That day when Al was here, Harold decided to see what happened if he moved the cam gears on my car just a bit, and the final result was 356 whp @ 384 pounds of tq. along with Al's reflash. Like I said, talk to Al he saw it first hand and can explain in detail how it was done since he was very observative on the process. Since of mechanic the only thing I know is change bolt-ons I have no idea what they did to my car, I only know it works like a charm and my car is now a totally different beast, specially on high boost and C16.
You can make indeniable improvements with cam gears. But, and there is a but, each car is different and will probably need a different setting. The amount of time it takes to test different setting is time consuming and very expensive. Check out the article in turbo magazine, where al talks about a guy that works magic on cam gears...
Which Turbo Magazine? so I can go read it, but like I said even Al that didnt believe in this was very impressed
And yes it is time expensive, but in terms of money it depends on how your car is set up it varies from $300 to $450 as far as I know.
And yes it is time expensive, but in terms of money it depends on how your car is set up it varies from $300 to $450 as far as I know.
Randy are you comming to NJ tommorow ?
As Randy has said - each car requires individulaized checking and adjustment of cam gears. They are NOT all the same. There is car to car variance.
As Randy has said - each car requires individulaized checking and adjustment of cam gears. They are NOT all the same. There is car to car variance.
This is like saying the amount of ignition timing or A/F Mitsubishi sets in the factory ECU is the best there is for all Evo's no matter what setup your running(which I'm sure someone will argue to be true). It just offers more adjustability to fine tune for your specific situation.






