gen 3 cr250 case / shock clearence

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » October 23rd, 2008, 8:54 pm

Does anyone have a template for what amount of clearence needs to be made at the rear of the engine case to clear the shock/spring on an 02 cr250?

Width?
Depth?
Degree?

davo77 · Post by **davo77** » October 23rd, 2008, 9:48 pm

My gen3 250 didnt require any clearancing

Are you running a heavier shock spring?

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » October 24th, 2008, 5:24 am

Bone stock

hoofarted · Post by **hoofarted** » October 24th, 2008, 8:18 am

It shouldnt require any clearance...

pimp559 · Post by **pimp559** » October 24th, 2008, 8:19 am

Something ain't right, if its stock then maybe you have the linkage on wrong? Post a pic.

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » October 24th, 2008, 8:37 am

sorry guys, i havnet got the 250 even out of the frame, but the 500 case is stripped and clean so I'm just wanting to machine the bushings, and see whats gotta be done before it goes back together

teemtrubble · Post by **teemtrubble** » October 24th, 2008, 9:06 am

I haven't had that issue with the 250's and 450's. I have to clearance the 125's and don't know about the GEN4 250's yet it but, it sure looks like you have to.

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » October 24th, 2008, 9:17 am

Thanks guys!

HrcRacing · Post by **HrcRacing** » October 24th, 2008, 9:21 am

My gen 3 ('04 CR250 based) AF required no relieving either with the stock spring.

Didn't Bob post the part numbers for the bushings? Why machine them?

http://www.bannedcr500riders.com/board/ ... .php?t=990

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » October 24th, 2008, 9:41 am

sorry, boring the case bushings

dannygraves · Post by **dannygraves** » October 24th, 2008, 11:24 am

my gen-4 250f was very close, but didn't need it with a stock spring.

DPinDet · Post by **DPinDet** » October 24th, 2008, 3:21 pm

my Gen 3 250 (2004) did not require any clearancing with the 500 motor in it, and I am even running a heavier spring 5.4 kg.

DPinDet

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » October 24th, 2008, 3:35 pm

alrite, I gotta get a spring to haul my 220lbs yet too

100hp honda · Post by **100hp honda** » October 24th, 2008, 4:23 pm

hey mike while were on the subject, do you know if i will have any shock spring/case issues on a '05 450 if i use a 6.0 spring ? im not even sure ill need a 6.0 because i think +6 swingarm extension will be plenty long but i wanted to get my ducks in a row just in case a stock spring isnt strong enough

teemtrubble · Post by **teemtrubble** » October 24th, 2008, 5:05 pm

100hp honda wrote:hey mike while were on the subject, do you know if i will have any shock spring/case issues on a '05 450 if i use a 6.0 spring ? im not even sure ill need a 6.0 because i think +6 swingarm extension will be plenty long but i wanted to get my ducks in a row just in case a stock spring isnt strong enough

Sorry I don't know but, I will know by next week. So hit me up about the middle of next week.

eyesky2002 · Post by **eyesky2002** » October 24th, 2008, 5:16 pm

100hp honda wrote:hey mike while were on the subject, do you know if i will have any shock spring/case issues on a '05 450 if i use a 6.0 spring ? im not even sure ill need a 6.0 because i think +6 swingarm extension will be plenty long but i wanted to get my ducks in a row just in case a stock spring isnt strong enough

I have a 6.0 and have a good 1/2" of clearance on my '04 450 frame!

Mik329 · Post by **Mik329** » October 29th, 2008, 4:44 am

I'm running a 5.7 on a gen 3 with no issues as well.

iggys-amsoil · Post by **iggys-amsoil** » October 29th, 2008, 5:17 pm

5.9 here. I'm 220 no gear.

There are no part #s for the bushings because there not sold and come with a new case.

After one gets the sag set correctly or to there liking, with the bike on the stand rotate the spring so the gap on the spring is centered at the cases.

Something I need to recheck.

robertg · Post by **robertg** » January 11th, 2009, 4:43 pm

Does anyone know why the shock rubs the cases on a 125 and not the 250? Is the spring diameter larger on a 125? Mine is 88mm from what I remember. The linkage has a different part number also, so maybe the shock sits further back on the 125?

I'm just wondering because I bought some linkage from a 250 but I don't have it yet. I started with a 125 roller but then bought a 250 frame, but I couldn't install my motor without removing the shock.

Balaclava · Post by **Balaclava** » January 11th, 2009, 7:25 pm

robertg wrote:Does anyone know why the shock rubs the cases on a 125 and not the 250? Is the spring diameter larger on a 125? Mine is 88mm from what I remember. The linkage has a different part number also, so maybe the shock sits further back on the 125?

I'm just wondering because I bought some linkage from a 250 but I don't have it yet. I started with a 125 roller but then bought a 250 frame, but I couldn't install my motor without removing the shock.

I have yet to install my motor with my shock in place...i don't know how much clearance i have...

robertg · Post by **robertg** » January 11th, 2009, 7:44 pm

Can you measure the diameter of your shock spring? If a 250 shock is smaller, I think I will buy one.

Balaclava · Post by **Balaclava** » January 11th, 2009, 8:08 pm

outside diameter is 87mm and the inside diameter is 78mm...that's my rough measurement...that's on a stock yellow spring

pstoffers · Post by **pstoffers** » January 11th, 2009, 8:16 pm

My 02 & 03 shock spring rubbed the cases so I clearanced them

My 02 with 01 motor. Now mind you this is a SH that SH/AJ shipped out
to a customer with it rubbing the motor

you can see the paint rubbed off the spring in the pic.

My 03 with 86 motor

100hp honda · Post by **100hp honda** » January 11th, 2009, 8:43 pm

i dont get this. if your using stock spring on gen3 cr250 why does some rub and some dont ?

pstoffers · Post by **pstoffers** » January 11th, 2009, 8:50 pm

They are all a little different...

BannedCR500Riders.com

gen 3 cr250 case / shock clearence

gen 3 cr250 case / shock clearence

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