powervavle 250r help
#27
powervavle 250r help
I have a 350 ESR PV for sale, been ridden twice. perfect condition. $1200. I can put a CR cylinder on an R bottom end, but it would be very costly. the PV is not operational and you have to run a 4mm stroker crank and alot of case work. A honda cylinder would never mate up again.
#28
powervavle 250r help
Originally posted by: theorigionalsurfer
i beg to differ bubba, dean sundahl used to TT race a ATC 90 for team honda back in 81, it was on alky and put out over 50 horse
i beg to differ bubba, dean sundahl used to TT race a ATC 90 for team honda back in 81, it was on alky and put out over 50 horse
#29
powervavle 250r help
I know this thread is a few days old, but I just now seen it.
The 92 and newer CR cylinders can be put on the R bottom end, but welding and relocation of the studs is required. The easiest thing to do is use the 88-91 CR cylinder. It will bolt right up. I am not exactly sure what is required of rod length and port timing since mine is a 4mm stroker with longer rod and spacer plate. Neither one will have a functional PV. There are many advantages to the CR cylinder as you know. Nikisil and larger water jackets are the primary ones. The older CR cylinders when ported, don't really make any more HP than a ported R cylinder. The 92 and later cylinders do have better ports to start with and can be made to outperform the stock one.
Hey guys, my dyna ignition will support electric powervalves like what the new suzuki RM's use. It has an RPM window switch (Bubba, can you tell I am into drag cars[img]i/expressions/face-icon-small-smile.gif[/img]) that can be turned on then off twice and is fully adjustable. All I need is a couple of servos
An ATC90 making 50+HP! That's some strong alky!!!
The 92 and newer CR cylinders can be put on the R bottom end, but welding and relocation of the studs is required. The easiest thing to do is use the 88-91 CR cylinder. It will bolt right up. I am not exactly sure what is required of rod length and port timing since mine is a 4mm stroker with longer rod and spacer plate. Neither one will have a functional PV. There are many advantages to the CR cylinder as you know. Nikisil and larger water jackets are the primary ones. The older CR cylinders when ported, don't really make any more HP than a ported R cylinder. The 92 and later cylinders do have better ports to start with and can be made to outperform the stock one.
Hey guys, my dyna ignition will support electric powervalves like what the new suzuki RM's use. It has an RPM window switch (Bubba, can you tell I am into drag cars[img]i/expressions/face-icon-small-smile.gif[/img]) that can be turned on then off twice and is fully adjustable. All I need is a couple of servos
An ATC90 making 50+HP! That's some strong alky!!!