Author Topic: 02-07 cr top end (Read 4175 times)

hickwheeler · « **on:** October 12, 2014, 01:48:48 AM »

I have a friend asking if would be possible to run a 02-07 cr top end with ignition.

2ndmoto · « **Reply #1 on:** October 12, 2014, 05:01:00 AM »

02-07 are case reed inducted.

Best regards
-Jason

hickwheeler · « **Reply #2 on:** October 12, 2014, 11:25:19 AM »

I do not know anything about the cr stuff. That's why I'm asking here. He was curious about it. Because of the electric pv. He wants to put cr ignition on his r and thought he if it was possible. He could make his a pv'd motor that way.

etccb · « **Reply #3 on:** October 12, 2014, 01:15:18 PM »

No he cant use it on the trx/atc 250r bottom end.

hickwheeler · « **Reply #4 on:** October 12, 2014, 01:57:05 PM »

see that now thanks for the replies.

KsSandduner · « **Reply #5 on:** October 13, 2014, 12:12:09 PM »

FTZ does work with the CR cylinders on TRX bottom ends. I have the '91 style CR cylinder on my TRX bottom end which is a bolt on. On their website they show they also do the newer CR cylinders, but they require welding and modifications to the TRX cases. I have no idea what years of cylinders they consider "newer".

dariusld · « **Reply #6 on:** November 08, 2014, 10:54:02 PM »

Quote from: KsSandduner;44471

I have no idea what years of cylinders they consider "newer".

From the picture on their site, it looks to be pre 2002.

Tbone07 · « **Reply #7 on:** November 09, 2014, 12:29:06 AM »

Those years of CR cylinders are the case reed design so they won't work.

But the idea of using the electric power valve is a good one. It would cure the issues the 250R cylinders have with the pressure operated PV's