mo better

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Apr 22, 2001
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#1
OK............
After reading the latest issue of transworld mag. and reading the
article on the 04 cr 250 mod bike, my cylinder is off and traveling
to the midwest...........Only I chose eric gorr, after speaking with him on the phone and reading about many happy customers on this site. I am really amazed they can get 4-5 hp more out of the
engine, and wonder how true this is..........Also was wondering if a v-force or rad valve would be better with a ported engine, as I have both. This is the first time i've ever had any engine ported, so
I am excited!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Any comments?
 

marcusgunby

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#2
The boyesen 3 rad valve was found to outperform the vforece, std, and HRC works reed setups.
 

Jman271

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#3
Well, you will not be disappointed. I had EG do my 02 CR250 w/ mo better, the diff was unreal, power everywhere,,,,
 
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#4
sounds awesome.. let us know how it goes! i want to get my 04rm250 ported for a little more everywhere, is it possible? what exactly do you do, reshape the ports and finish off any burrs/casting flaws? appx how much does it cost, what parts do you send off and does anything else need to be changed to mak it work properly?
 
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#5
I'm also interested in jOka's questions. How much torque or hp would I gain off a 2003 RM125. I'm just curious.
And I'm assuming it costs around $270. ?
 

Y2Z

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#7
sounds like im waisting my money looking for pipes... ill have to check it out for my 02 yz125, i would like to do somthing to my bike to give my bike more power everywhere.
 
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#8
I just UPS'd the cylinder of my KX 250 to Eric on Friday for the 2mm overbore and the mo better porting. I have a Boyesen Rad valve but not sure if it or the stock reed block should go back in - any thoughts. All the necessary info is listed on Forward Motion's website. The overbore is $400 and includes porting, piston, gasket set, etc. porting only is $150
 

Y2Z

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#9
on the site it says designed for 250's and 500's. Is the mo better porting avaible for 125's? is it as affective as it is for 250's and 500's?
 
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#11
As you are a subscriber you can go to the Vendor forum and leave a message for Eric or call direct - he answers the phone for tech advice in the mornings all week I think. Good Luck
 
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#12
Well the CR250 engine is a well rounded engine with a wide torque spread as a top priority in the design. So getting 4 or 5HP more is not a difficult task. Getting that extra power with a decent torque curve is another matter entirely. That is where the genius comes in!!!

If you still need more, consider a big bore kit.


Chris
 

elf

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#13
Click on Eric Gorrs add on the side of the page for prices.

jokA yes its possible Click on Erics site it tells you all about what he does.

rairden no numbers for you call Eric and ask.
 
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#14
I tried calling Forward Motion and they were busy, off to lunch....whatever.

Figured I'd ask you all, I want to have the big bore/porting job done to my 03 CR250. What you guys are seeing for turn around times with Eric?

It's riding season in California, don't want to miss 2 months while my bike is apart!
 

gwcrim

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#15
I had about a 4 week turn around time on mine. But I did send it off right before Christmas. (Or was it right after?) I'd write off one week of that just for the typical holiday crush.