Quote:

So please let me make sure I understand... the 790 cannot benefit from improved/upgraded cams, as the current cams are... "very good" if not "perfect"?

I.e., anybody going to make some hotter cams for the 790 engine?

--Jaeger



Jaeger,
I have a set of custom ground Megacycle cams in my 904cc 270º motor. They are made specifically for a 904 Speedmaster and have what MC calls their "Medium Street Grind". I purchased them used from a third party through one of our vendors here and did not have to send mine in to be reground which you normally would do. Megacycle cuts the lobes off, welds new material onto the cams and then regrinds for various valve timing and throw. That is the difference between their street grind, stock, and high performance grind. They are all ground with totally different specs. I posted dyno results somewhere but cannot come up with the prints since I just moved. When I find them (I have about 10 pages of dyno results so far) I will post them all on my site with all the info for each.
Anyway, the MC cams gave me about 2 hp gain in power, but dropped the torque about 2 ft/lbs at the same time. They make the bike really wind up quicker, but overall, I have to say that for the cost of the cams, not really worth the big bucks ($6-700 at MC, but I paid less for mine).
There has also been a ton of discussion over at RAT.net as well as the Delphi 2001+ modified bonnie forum (don't know if there is an issue with that site or if I was just downright banned, I cannot get in for some time now) in regard to cams and using stock 790 cams in 865 motors and using two intake cams in the 790s as well. But that is more for racing and using the higher end of the revs, such as the flattrackers do. I have my original cams sitting in a box in the garage and it seems they are now valuable if the 865 will be the only motor made from now on.
Ok, enough rambling for now.

A word to the wise is not necessary. It is the stupid ones who need the advice. Pat