I Have The B-Cam 4224 And I Sping My Motor @8900-9000 rpm. If I Switch Over To The C-Cam 6224 Will There Be Any Gain,
I'm Running X-Ski Ported Head,Oversize Ferrea Lightweight With Riva Valve Train, Rotax Racing Cam 4224, E/T 70-145 Race Supercharger 19+Lb @8950,Les Cooke ECU 9200 rpm, 60Lb Injectors, 60mm T/body, Riva Gen1 Intercooler, Stock Bottom End. The Ski Pull Hard Right Now.
I think there will , should be better accelaration, what compresion pistons are you running?
If you will be willing to sell the b shaft let me know - I will be intrested.
i'm running stock compresion 8.4:1 with the stock head gasketOriginally Posted by rxpdz
my cam is for sale. for $800 it has less then 10 hours on it. i paid $1350
i guess i'm going to try the c-cam.
Only thing to be aware of is the 6224 is a more agressive lobed cam.
You will have to check the valves etc a lot more often, and popping the head off to change valves can be good practice.
Have a little work done on the 4224 to bring it a little hotter while maintaining the easier life the cam gear will have.
It really needs to be used with Autronic ECU's too..!!, Rotax will not bring out the best in it as a cam.
Or If you feel REALLY like you want it to fly, try Franco Dettori's IGNI-Power. This is the REAL, pukka ECU for Rotax Racing, and will leave the world wide-open for you. I have a 4224, which has not been run at all, which could be bought if right price.
Last edited by Richieb; 28-11-2009 at 10:12 AM. Reason: more info.
Richie! well said mate well said i'm glad i know you hahaha
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Gonna see what my animal comes out with in next few weeks with it's new, updated, bigger goodies.
Should be interesting..!!
Just having a look at your RPM against limiter.
Its is waaay down on what it could do for you if the numbers are correct.
Try to get the RPMs up nearer where it was set to do, and use the timing and fueling curve for more power.
I would like to see what the exhaust temps and O2 figures are too. You need to get this looked at pretty urgently at this kind of RPM/Power.... at least for your peace of mind. It can go horribly wrong, very quickly with the engine stressed up like this. = $$$$$'s
Looks like you have the spec to get there if you can set her up to use it.
Maybe better using Igni Power to make it happen. That's where the fun starts..!!!
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