Does anyone make an aftermarket 3 stage cam for the GSR? My stock GSR cams have 3 differant sized lobes in each set of lobes, I was wondering who makes aftermarket perfromance ones like that?

 

I would try looking at jun, crower, comp, crane, and I think even skunk2 makes stage three cams but the problem you are probally going to run into most cam companies will require a spring and retainer set and some head work and new valves because they will open you valves a hole further and are usually a race cam. but you could look into getting a custom grind cam and design your own. but you will probally only notice 10-20 hp gains without some port and polishing. the port and polishing will help alot even with you stage 2 cams though.

 

Ehehehe, thatnks for the info there guy, but I wasn't looking for stage3 cams I was looking for 3stage cams, it was an honest mistake no biggy

 

...are you talking about the "intake, exhaust and VTEC" lobes on your camshaft? If you aren't, you need to let us know.

You have 2 intake, 2 exhaust and a VTEC lobe per cylinder. There are two intake trigger lobes and a VTEC lobe on the intake cam (per cylinder) and two exhaust lobes per cylinder on the exhaust cam.

 

do you know why they are 3 different heights?
obviously the middle(biggest) is the vtec lobe.

the two smaller ones are different height. They are like this to create a "swirl" effect on the incoming air charge. How? One valve is open more allowing more air through one port hence creating a swirl. The reason they want to make it swirl at low (under 5000 or whatever vtec crossover is) rpm is to help The Air/Fuel mixture "mix" more. Kinda like stirring Kool-Aid to mix it up.
The more "mixed" the mixture is, the more fuel it burns and the resulting exhaust has less underburned gas in it whicj means cleaner emissions.