TRX250R.ORG

Workshop => Engine and Bottom End => Topic started by: hickwheeler on October 12, 2014, 01:48:48 AM

Title: 02-07 cr top end
Post by: 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.

Title: 02-07 cr top end
Post by: 2ndmoto on October 12, 2014, 05:01:00 AM

??? 02-07 are case reed inducted.

Best regards
-Jason

Title: 02-07 cr top end
Post by: hickwheeler 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.

Title: 02-07 cr top end
Post by: etccb on October 12, 2014, 01:15:18 PM

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

Title: 02-07 cr top end
Post by: hickwheeler on October 12, 2014, 01:57:05 PM

see that now thanks for the replies.

Title: 02-07 cr top end
Post by: KsSandduner 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".

Title: 02-07 cr top end
Post by: dariusld 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.

Title: 02-07 cr top end
Post by: Tbone07 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