CRF230f Carb problem

iTrack · 06-05-2012, 04:21 PM

So I removed the exhaust baffle, and intake restriction form the 230f today. I am now in the process of re-jetting the carb when the Klein "13" series 120 main jet snapped as I was installing it. I think it had a defect. I upped the pilot to a 45 and changed the long needle to the factory 03-04 needle and lowered the clip to the 4th position. What effect will putting the 102 factory main back in until I get another 120 main have on the running of the bike?

FastDoc · 06-05-2012, 04:40 PM

Here is a series of articles you will benefit from reading:

http://dirtbike.off-road.com/dirtbik...roject697.html

iTrack · 06-05-2012, 05:34 PM

Yea I read that and others. What they installed is the fairly common Honda "power up" kit. It is better than stock but I'm going for better than the power up by following the advice of Mike "coeshow" Coe who has done extensive dyno testing of the crf230f.

SpudRider · 06-05-2012, 07:22 PM

Quote:

Originally Posted by iTrack

So I removed the exhaust baffle, and intake restriction form the 230f today. I am now in the process of re-jetting the carb when the Klein "13" series 120 main jet snapped as I was installing it. I think it had a defect. I upped the pilot to a 45 and changed the long needle to the factory 03-04 needle and lowered the clip to the 4th position. What effect will putting the 102 factory main back in until I get another 120 main have on the running of the bike?

Your engine will probably be running lean, and hot, if you removed intake and exhaust restrictions, while still keeping the smaller carburetor jet.

Don't push the bike too hard until you get the larger jet installed.

Do you have a link to Mike Coe's information? How many hp does the stock CRF230F produce? How much more power do you expect to get from following Mike Coe's suggestions?

Spud

SpudRider · 06-05-2012, 07:27 PM

After a little searching, I found the following links concerning Mike Coe.

http://www.coeshow.com/_mgxroot/page_10772.html
http://www.thumpertalk.com/topic/792...s/#post9320255

Spud

FastDoc · 06-05-2012, 07:31 PM

Looks like he has good products. I don't think the new CRF250 D/S will help his sales though.

iTrack · 06-05-2012, 08:04 PM

Thanks guys, thats what I figured. I'll take it easy while the new 120 is coming in.

pete · 06-09-2012, 01:48 AM

Everytime I read a post like this I think...
I must have a look and see if my XR250
has a inlet restricter... Then forget about it
just as quick :oops: .... old age thing I think...

06-05-2012, 04:21 PM	#1
iTrack Join Date: May 2012 Posts: 28	CRF230f Carb problem So I removed the exhaust baffle, and intake restriction form the 230f today. I am now in the process of re-jetting the carb when the Klein "13" series 120 main jet snapped as I was installing it. I think it had a defect. I upped the pilot to a 45 and changed the long needle to the factory 03-04 needle and lowered the clip to the 4th position. What effect will putting the 102 factory main back in until I get another 120 main have on the running of the bike?
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06-05-2012, 04:40 PM	#2
FastDoc Join Date: Mar 2009 Location: Southeastern Washington desert Posts: 14,761	Here is a series of articles you will benefit from reading: http://dirtbike.off-road.com/dirtbik...roject697.html __________________ Happy to serve.
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06-05-2012, 07:27 PM	#5
SpudRider Join Date: Jul 2008 Location: Idaho Posts: 25,054	After a little searching, I found the following links concerning Mike Coe. http://www.coeshow.com/_mgxroot/page_10772.html http://www.thumpertalk.com/topic/792...s/#post9320255 Spud __________________ Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894
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06-05-2012, 07:31 PM	#6
FastDoc Join Date: Mar 2009 Location: Southeastern Washington desert Posts: 14,761	Looks like he has good products. I don't think the new CRF250 D/S will help his sales though. __________________ Happy to serve.
	0

06-09-2012, 01:48 AM	#8
pete Join Date: Jan 2012 Location: ChCh , NZ Posts: 2,262	Everytime I read a post like this I think... I must have a look and see if my XR250 has a inlet restricter... Then forget about it just as quick :oops: .... old age thing I think... __________________ 09 XT660R ... 06 TTR250 ... 80 Montesa H6 125 Enduro... 77 Montesa Cota 348 MRR "Malcom Rathnell Replica"... Current resto projects.. 81 Honda CT110... 80 Kawasaki KL250A1... 11 Husaburg TE125 enduro... "sold" along with another 31... Lifan 125 Pitbike.. "stolen" ... KIWI BIKER FORUM...... http://www.kiwibiker.co.nz/forums/content.php All the best offroad rides in NZ... http://www.remotemoto.com/ E-mail... xtpete1@gmail.com
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06-05-2012, 05:34 PM	#3
iTrack Join Date: May 2012 Posts: 28	Yea I read that and others. What they installed is the fairly common Honda "power up" kit. It is better than stock but I'm going for better than the power up by following the advice of Mike "coeshow" Coe who has done extensive dyno testing of the crf230f.
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06-05-2012, 08:04 PM	#7
iTrack Join Date: May 2012 Posts: 28	Thanks guys, thats what I figured. I'll take it easy while the new 120 is coming in.
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