Two Stroke Motocross

Two Stroke Motocross Forum => Technical => Topic started by: kim wedding on January 31, 2012, 04:06:26 AM

Title: carbs for cr125
Post by: kim wedding on January 31, 2012, 04:06:26 AM

which carb is better for the 2007 honda cr125 keihini airstriker carb or a psi genisis big air carb?

Title: carbs for cr125
Post by: rufus1138 on February 01, 2012, 03:13:16 PM

....I wanna hear this....personally there are such huge benifits from other mode like porting pipes and other things that I've never heard of a need for anything other than oem....kiehn on mine

Title: carbs for cr125
Post by: SachsGS on February 01, 2012, 03:17:49 PM

After reading your question I thought "What the heck is a PSI Genisis carb" and after investigating I learned the company may not be in business. For the cost of the carb you could almost pick up a second used CR125.

Title: carbs for cr125
Post by: kim wedding on February 01, 2012, 11:23:32 PM

the psi I know is more performance but im asking about for the jetting the mikuni carbs are crappy carbs i know keihin is better jetting but doesnt add performance i wuz just wondering which would be better for the jetting as aposed to power

Title: carbs for cr125
Post by: xandyx on February 02, 2012, 12:29:22 AM

go for a keihin pwk 36. it's easyer to tune and you'll get a better throttle response. go for a pwk 38 if your aim is top end!

Title: carbs for cr125
Post by: kim wedding on February 02, 2012, 12:38:27 AM

where can i find a keihin pwk36 for my 2007 honda cr125???  and can i send it to dicks racing for a 36 to 39 conversion and dialajet is it possible and has anyone done this?

Title: carbs for cr125
Post by: xandyx on February 02, 2012, 01:04:27 AM

you can get a carb on ebay or try keepitroostin, they sell lots of used mx parts.

about that carb mod, don't know man, sorry!

Title: carbs for cr125
Post by: kim wedding on February 02, 2012, 01:20:03 AM

thanks man really apreciate all the info ur a life saver ive been looking and finally found this forum









save the two strokes

Title: carbs for cr125
Post by: rufus1138 on February 02, 2012, 02:57:49 PM

The dialajet mod is for the 2012 ktm 250 ac....I doubt they have developed hardware and or data required for a cr....we are the abandoned kids....Honda hates two strokes and everyone seems to have dropped them in favor of ktm tm maico and I hate to say it but the way way way over hyped 2010-2012 us 250/125 wich are overweight and have been neglected for almost a decade

Title: carbs for cr125
Post by: Super Trucker on February 03, 2012, 07:08:14 PM

Your 07 cr125 has a 38mm carb,nothing wrong with that carb,jetting is a bit off,I changed the pilot, maybe the needle-don,t remember,and the main jet. With an icat,radvalve,everything else stock,it has quicker throttle response than 90,s pro suppercross bikes I rode. That psi carb is from the mid 90,s I heard it was a great carb,team Noleen yz250 used them.

Title: carbs for cr125
Post by: dbroc78 on February 05, 2012, 07:07:00 PM

Anybody know what bikes came with a Keihin pwk36??

Title: carbs for cr125
Post by: factoryX on February 05, 2012, 07:29:01 PM

http://www.ebay.com/itm/HONDA-250R-ATC250R-ATC-CARBURETOR-CARB-36-MM-KEIHIN-NEW-/270826675799?pt=Motors_ATV_Parts_Accessories&hash=item3f0e871e57&vxp=mtr#ht_719wt_1164

Way to expensive for that carb, it used to be on ESR250.com in the 250r section, but its gone now. I think newer KTM 125's came with 36mm pwk carbs.

Title: carbs for cr125
Post by: xandyx on February 05, 2012, 11:14:20 PM

Quote from: dbroc78 on February 06, 2012, 03:07:00 AM

Anybody know what bikes came with a Keihin pwk36??

most late 90's, early 2000's rm's and kx's 125. you'll find lots of them on ebay.

Title: carbs for cr125
Post by: mark800xcsp on February 10, 2012, 05:11:47 AM

james dean jetting can set you up and it will come with his jetting kit