Rad Valve?

[Duke450r]

Hey 250r gurus, I am considering installing a rad valve on my 88 250r, it will be a ESR 330, and I will be using a 38mm airstryker carb.

With the 38mm carb, should I use a rad valve made for the TRX or can I use a CR rad valve? If I use a CR, does it matter what year?

Thanks for the advice.

[elchankoblanko]

Go with the 96 cr rad valve setup, ive been told this is a great setup from alot of people.

[beerock]

96-98 cr250 boysen rad valve

you can port it later on for more top end as well

[Duke450r]

Thanks for the responses guys.

[hang1p]

i just picked up a 2001 cr250 rad valve 02e went to install it and my carb is pointing at the down rail of my frame is the angle of the inlet to the rad valve different threw out the years i see 02 on are totally different

[mikeminyard]

it needs to be an 02b

[hang1p]

cool I just bought one today

[beerock]

Originally posted by hang1p
cool I just bought one today

you can port it later on if you like too hang

[hang1p]

beerock is that the only version the will fit ?

[beerock]

no the trx will too :p

but the cr rad valve is great

[baseballplaya23]

what does the cr rad valve give you that the regular one wont?

[hang1p]

I'm switching to the cr rad valve because of space, my new 350 does not fit the way my old 330 did and the cr rad valve is shorter right now I have my carb hitting the frame and it looks like it can pop off at any time

[beerock]

Originally posted by hang1p
I'm switching to the cr rad valve because of space, my new 350 does not fit the way my old 330 did and the cr rad valve is shorter right now I have my carb frame and it looks like it can pop off at any time

um, i believe you need to run a reed spacer to get the carb to mount up right with the cr rad valve

heres a pic

[Duke450r]

Originally posted by beerock
um, i believe you need to run a reed spacer to get the carb to mount up right with the cr rad valve

That's great since I just ordered a CR rad valve, now I have to get a spacer. Guess I'll have to wait to put it on :mad:

[beerock]

Originally posted by Duke450r
That's great since I just ordered a CR rad valve, now I have to get a spacer. Guess I'll have to wait to put it on :mad:

well you can try but like hang said the carb barely is on

[deathman53]

I had to use a 1/2 spacer and use a heat gun to stretch my intake tube for the 39 pwk to fit on my atc250r, the carb does sit at different angle, but its not gonna come off. I have a 310pv(295) on my atc too, I think it will fit a stock cylinder better.