powervalve interchange

[trailwart]

i have an esr330pv cyl. that needs a new assembly. thinking of just buying a rotax or ct assembly. are the rotax drop in units or do i need to have machine work done. what year rotax assemblys work, and what size engine does it need to come from. found some on some salvage sites for decent prices. is the ct a drop in unit? anybody buy any replacment assemblies latly. im just wondering if i should get an esr unit or switch it out for a different unit. thanks

[trailwart]

i need just the powervalve assembly! sorry i didnt clarify

[matt250r21]

I can tell you this about my 2 Pro X PV topends with the Rotax PV unit, one is a 68 mm bore, the other is 68.5. The 68.5 PV valve is machined a little more then the 68's. So I would think a salvage part would need to be machined to work in a 330 because of the different bore size.

[trailwart]

neil has my cylinder right now, he told me i need a new pv assembly. i just am making sure the rotax is a direct drop in. if it is im goin to buy one and send it out to him so he can finish all the machine work. i just need to know what year and size cc the rotax assembly needs to come from. thanks

[Aceman]

Why can't you just ask Neil?

[trailwart]

DONT YOU THINK I ALREADY HAD ASKED HIM!!!!!!!!!! he has most of the answers but not all. he said the ct would work, just couldnt remember if all the rotax were the same, he needed to find his part #sheets. i posted this here for quick usefull responses.

[Aceman]

Take a Prozac and relax.:rolleyes:

[trailwart]

:D :D

[C-LEIGH RACING]

Prozac works right well the first time you've ever taken them, but if you stop & go back taking them latter on, waste of money, M&Ms will work just as good.

Matter of fact, any precription or non precription drug sold at a drug store will not cure any sickness, they only mask the problem for a little while untill your body can heal itself.
Neil