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View Full Version : modding lsr frame for yz engine


bobby bo
08-10-2005, 06:35 PM
where can i send my frame to convert it for it to take a yz426 engine. thanks website would be great.
250R Baja Rider
08-11-2005, 10:23 PM
Any good metal fabricator should be able to do it.

My friend modified his Roll design frame to fit a 450r motor in it.
According to him it is a lot of work, but it can be done if you have the skills.
QuadRacer041
08-12-2005, 03:58 AM
dont even waste your time
hontrx265r
08-13-2005, 06:59 PM
bobby,
hybrids are badass but alot of money to build and you could have a real nice yfz fully built for what it would cost or a 450r if you would rather ride red.
bobby bo
08-14-2005, 10:13 AM
well it has all the parts already, all it needs to be converted to take a yzengine. i can sell my powervalve engine to cover most of the expenses..
stocktires
08-15-2005, 02:42 PM
Originally posted by QuadRacer041
dont even waste your time

I'd say the same, but most people don't have the cash to buy Walsh chassis' Lou
250R Baja Rider
08-15-2005, 03:09 PM
If you have already spent a ton of cash on suspension and everything else, go for it man!!

I am doing that too since I cannot upgrade my quad any further and I know I will lose too much if I try to sell it. And spend a lot again if I buy a new or newer 4 stroke.

I'd say go for it!!
QuadRacer041
08-15-2005, 03:12 PM
Originally posted by stocktires
I'd say the same, but most people don't have the cash to buy Walsh chassis' Lou


i totally understand that, you dont have to get a walsh.lonestar still makes a crf chassis that is reasonable priced.even a 400ex frame is better then modding an R frame
bobby bo
08-15-2005, 04:55 PM
dont like the 400ex chassis hybrids, dont know y, just doesnt apeal to me..

i already have pro-traxx front end, swingarm and pep zps all around, so it would be cheaper for me to get the frame modded..
EvilJester400EX
08-16-2005, 12:43 AM
It's much harder to modify the 250r chassis for a 4 stroke engine than a 400ex just because of the engine height.
bobby bo
08-16-2005, 04:19 AM
Originally posted by EvilJester400EX
It's much harder to modify the 250r chassis for a 4 stroke engine than a 400ex just because of the engine height.

thanks man,, didnt know that. did you race this weekend?? how you do??
stocktires
08-16-2005, 07:51 AM
Would the R chassis be harder to convert because of the mounting points? I thought the heigth factor only matter when trying to mount a crf in an R frame?
EvilJester400EX
08-16-2005, 09:06 AM
I raced, sitting out for 2 months really kills your endurance, by the end of the 2nd lap I was given out and just riding around slow haha. Come race Archers Lodge this weekend man.

Also Alex, I would just buy an aftermarket YZ frame that had 250r geometry (sell your frame and engine) if you really wanted to have the converted setup.:cool:
bobby bo
08-16-2005, 09:18 AM
well, yeah thats a way to go also.. i thought of it.. i want to hit up archers lodge, but i cant its my 10 year anniversary. if i go ride i might need a place to stay for a while..lol
EvilJester400EX
08-16-2005, 09:25 AM
Dinner Friday, track Saturday, another dinner Saturday night. :macho

Mixed in with whatever flowers you want to buy her. :p
bobby bo
08-16-2005, 10:46 AM
Originally posted by EvilJester400EX
Dinner Friday, track Saturday, another dinner Saturday night. :macho

Mixed in with whatever flowers you want to buy her. :p


that would be doable, if i get her the diamond ring.. if not than we're going to mertyle beach for the weekend..