Thread: Advancing The Cam?
05-31-2006, 03:32 AM #1
Advancing The Cam?
My Dealer has offered to advance my cam (for a fee of course!), he's been supporting one of our top seadoo racers, and recons a 10hp increase?
Anyone on here heard of this mod?
05-31-2006, 07:07 AM #2
I think he means retarding the cam. Yes, its a pretty common practice to retard the cam timing for more top end power.
05-31-2006, 07:20 AM #3
Cheers Jerry.... It's probably me that's got it incorrectly described!
05-31-2006, 07:29 AM #4
- Join Date
- Jan 2006
- Puerto Rico
Jerry, when i installed my stock class RR ECU in my 05' stage II RXT for the first time i noticed that my cam timing was already retarded from the factory, (the 3 allen bolts were all the way to the right in the slots) but in Israel 04' RXP the cam timing was advanced from the factory (the 3 allen bolts were all the way to the left) if this normal? do you know if the people from Rotax Racing are aware of this? thanks for your input
05-31-2006, 08:39 AM #5
Ray, it just depends on how they were assembled at the factory. Some are advanced, some retarded. This is alot of the reason you see some skis run faster than others.
05-31-2006, 09:04 AM #6
How hard is it to look at the cam, and how hard is it to adjust this? I have never even pulled off the valve cover on my engine yet.
05-31-2006, 09:12 AM #7
The valve cover is easily removed and there is an end cap on the back of the head that you remove to access the camshaft sprocket bolts.
05-31-2006, 09:36 AM #8
Is the valve cover gasket re-usable? I forgot to add one to my last parts order.
05-31-2006, 10:25 AM #9
Jerry are we talking major gains or just so so for doing this to the stock cam?
05-31-2006, 10:55 AM #10
Yes, the valve cover gasket is re useable.
I have never messed with the cam timing on a stock ski, but plan to do it on Careys ski if i ever get a minute of free time.
Playing with the cam timing on my ski has produces noticeable differences.
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