TRX410 Stroker in a 03CR250 Frame?

ZETTNORCAL · Post by **ZETTNORCAL** » November 7th, 2009, 8:37 pm

I just siezed the 250. I have a chance to buy this stroker engine out of a TRX250R for cheap. I figured that it would be a worthy swap into the CR chasis. Would also have a lighting coil. I guess I am asking if anyone has tried the swap into a two wheeler? Can the forward kicker be converted to rear kick with CR250 parts? Is the engine mounts the same as a CR motor? ...........................Just in one of those stoked thinking moods.............Probably won't sleep much tonite thinking about this swap. Will the "Y" have to be moved?........HHHMMMM

dannygraves · Post by **dannygraves** » November 7th, 2009, 10:46 pm

we've actually talked about this before... would be super cool, 6 speed, lighting coil, etc. but if I remember correctly, the motor is all big at the front on the quad, but the atc 250r motor would be a better fit. either way, will not just bolt in.

ZETTNORCAL · Post by **ZETTNORCAL** » November 8th, 2009, 8:02 am

I think I just answered my own question. It looks like the swing arm pivot mount on the CR engine is way different on the trx. Therefore the engine would not work unless some exteame changes were made to the way it mounts.... Posible.... Mabey?

dannygraves · Post by **dannygraves** » November 8th, 2009, 8:55 am

of coarse, if the price was right, you could just buy an atc250r motor for cheap and move everything over. the atc motor shul;d be easy.

eyesky2002 · Post by **eyesky2002** » November 8th, 2009, 1:22 pm

250R's are not selling worth a crap right now, so maybe finding a deal on a motor might be easy. Remember they kick forward!!! I would have to say the mounts look close to a CR250 motor, but wht mot find a 500 to stick in there?

ZETTNORCAL · Post by **ZETTNORCAL** » November 8th, 2009, 1:39 pm

Well I allready haVE a 500 in an CRF250 chasis. Just thought it would be cool to have the 6spd, lighting coil, and power valved stroker 410. The power would be alot different than the 500. I think?

100hp honda · Post by **100hp honda** » November 8th, 2009, 1:52 pm

wont work. check ebay for pictures and youll see why.

eyesky2002 · Post by **eyesky2002** » November 8th, 2009, 2:18 pm

100hp honda wrote:wont work. check ebay for pictures and youll see why.

I have a 88 TRX250R, I see no reason why you can not make it fit???? Let me know I will take some pics to help with the planning... I have thought about sticking a 500 in the quad and many a people have done it with good results.

100hp honda · Post by **100hp honda** » November 8th, 2009, 8:58 pm

eyesky2002 wrote:I have a 88 TRX250R, I see no reason why you can not make it fit????

you make it sound easy as pie like raise the Y a inch and re-weld the mounts

Let me know I will take some pics to help with the planning...

since you have one sitting in your garage youll have a birds eye view. heres what i see from pics..... everything appears wrong from the front to the back.

1- swingarm mounting location in relation to the front sprocket looks fuked
2- gear shift shaft location and position looks fuked
3- kick start area looks fuked
4- kickstart goes backward and i see no way to change that
4- alot of extra shit in the front of the motor at counterbalancer
5- did i miss anything ? i would bet million dollars theres more issues than what i mentioned

I have thought about sticking a 500 in the quad and many a people have done it with good results.

many people ? i havent heard one success story yet. infact if you ask about 500/qaud conversion on any site youll hear quit a few horror stories.

eyesky2002 · Post by **eyesky2002** » November 9th, 2009, 4:46 am

WOW.... Some one having a bad day?

A conversion is just that.... a conversion, it takes mods to make it work. Seem to remember having to raise my Y to fit my 500 in my frame, having close frame/shifter tolerances, pipe and air box fit issues and so on!

The biggest issue on either subject is that the R does not bolt thru the swing arm, and yes that does lead to the vibe issues putting the 500 in the R frame and mount breakage has been the biggest complaint.

JBaze · Post by **JBaze** » November 9th, 2009, 6:19 am

Any way possible to swap the 6 speed into a 250/500 engine?

ZETTNORCAL · Post by **ZETTNORCAL** » November 9th, 2009, 7:57 am

Funny, I looked at the power valve and thought COOL!

What I did'nt think is, where is that going to fit?

100hp honda · Post by **100hp honda** » November 9th, 2009, 4:01 pm

eyesky2002 wrote:WOW.... Some one having a bad day?

A conversion is just that.... a conversion, it takes mods to make it work. Seem to remember having to raise my Y to fit my 500 in my frame, having close frame/shifter tolerances, pipe and air box fit issues and so on!

The biggest issue on either subject is that the R does not bolt thru the swing arm, and yes that does lead to the vibe issues putting the 500 in the R frame and mount breakage has been the biggest complaint.

im fine man. sorry if it came across the wrong way. i think zettnorcal wanted info about how easy/practical it would be to do that conversion. in my opinion its a bad idea to even try. it wouldnt be easy or practical. if he has cash burning hole in his pocket i would buy $1000 cr5, pull the motor, put the new 580cc cylinder on it then install it in his gen2 chassis.... now that would be a badass machine and fairly easy conversion. could a guy shoe horn that 250r in there and make it work ??????.... i like to believe anything is possible.

CR500R7 · Post by **CR500R7** » November 9th, 2009, 6:56 pm

Everything sounds good in theory, the problems start when you try to put them into practice.

Not saying it can't be done, but you might need a lot of TIME, MONEY and PATIENCE.

If you have all 3 why not have a go.

LAYNFRM · Post by **LAYNFRM** » November 10th, 2009, 8:01 am

100hp honda wrote: put the new 580cc cylinder on it then install it in his gen2 chassis....

what's this about a 580cc cylinder? i could use a little more power out of the motard.

CR500R7 · Post by **CR500R7** » November 11th, 2009, 9:37 pm

LAYNFRM wrote:
100hp honda wrote: put the new 580cc cylinder on it then install it in his gen2 chassis....

what's this about a 580cc cylinder? i could use a little more power out of the motard.

http://www.bannedcr500riders.com/board/ ... php?t=7591

BannedCR500Riders.com

TRX410 Stroker in a 03CR250 Frame?

TRX410 Stroker in a 03CR250 Frame?