Planet Minis

zbbt · 07-17-2008, 02:29 AM

does anyone know the stock valve size in the crf150f and crf230f heads? im looking in my garage at my spare 230 head and it looks to be the same exact head used in the old 80's xr200 and 185 engines. what im thinking is this should have bigger valves and ports to put either bolt on upgrade for your 150f or your old 200 engine. thanks!

crfgoesbraap · 07-17-2008, 07:08 AM

the guys on TT know everything about em. ask in the 150/230 forum

firepower354 · 07-17-2008, 12:59 PM

Vins Bike Page, formally '2strokes.html'

SUZUKIRM12594 · 07-17-2008, 01:21 PM

The BBR website has a list of the differences and similarities of the CRF230F compared to the CRF150F. Im not sure if they still have the list since they rearranged their website but you could always call em up. www.BBRMotorsports.com I can also check my service manual and find the size of the 150 and let ya know later.

zbbt · 07-17-2008, 02:06 PM

thanks guys, Terry i read that entire site and it is a great resource! but the only problem is they dont list the valve size for the 230 engine : (

dirttrackin280h · 07-17-2008, 05:00 PM

Contact Mike on Thumpertalk. "Coeshow" is his username. I saw you're post on Thumpertalk, more than likely he will answer it, but if not send him a PM. He is a dictionary when it comes to the CRF150/230's. He built my 150F motor.

zbbt · 07-17-2008, 06:33 PM

thanks! ill get in touch with him asap.

crfgoesbraap · 07-17-2008, 06:53 PM

Quote:

Originally Posted by dirttrackin280h

Contact Mike on Thumpertalk. "Coeshow" is his username. I saw you're post on Thumpertalk, more than likely he will answer it, but if not send him a PM. He is a dictionary when it comes to the CRF150/230's. He built my 150F motor.

haha, hes like, a 150/230 god...(i'm kiwi over there)

firepower354 · 07-17-2008, 08:07 PM

31.5/27, from what I can find.

Google is GOD

07-17-2008, 02:29 AM	#1 (permalink)
zbbt 3rd Gear Member Join Date: Oct 2007 Location: 50 riders Posts: 1,522	CRF230 head? does anyone know the stock valve size in the crf150f and crf230f heads? im looking in my garage at my spare 230 head and it looks to be the same exact head used in the old 80's xr200 and 185 engines. what im thinking is this should have bigger valves and ports to put either bolt on upgrade for your 150f or your old 200 engine. thanks!

07-17-2008, 07:08 AM	#2 (permalink)
crfgoesbraap PM Newbie Join Date: Dec 2006 Location: connecticut Posts: 75	Re: CRF230 head? the guys on TT know everything about em. ask in the 150/230 forum

07-17-2008, 12:59 PM	#3 (permalink)
firepower354 3rd Gear Member Join Date: Oct 2006 Location: Flint MI Posts: 5,187	Re: CRF230 head? Vins Bike Page, formally '2strokes.html'

07-17-2008, 01:21 PM	#4 (permalink)
SUZUKIRM12594 3rd Gear Member Join Date: Jun 2008 Location: Glendale California Posts: 1,513	Re: CRF230 head? The BBR website has a list of the differences and similarities of the CRF230F compared to the CRF150F. Im not sure if they still have the list since they rearranged their website but you could always call em up. www.BBRMotorsports.com I can also check my service manual and find the size of the 150 and let ya know later.

07-17-2008, 02:06 PM	#5 (permalink)
zbbt 3rd Gear Member Join Date: Oct 2007 Location: 50 riders Posts: 1,522	Re: CRF230 head? thanks guys, Terry i read that entire site and it is a great resource! but the only problem is they dont list the valve size for the 230 engine : (

07-17-2008, 05:00 PM	#6 (permalink)
dirttrackin280h 2nd Gear Member Join Date: Aug 2006 Location: Oakley, California Posts: 536	Re: CRF230 head? Contact Mike on Thumpertalk. "Coeshow" is his username. I saw you're post on Thumpertalk, more than likely he will answer it, but if not send him a PM. He is a dictionary when it comes to the CRF150/230's. He built my 150F motor. Last edited by dirttrackin280h; 07-17-2008 at 05:10 PM.

07-17-2008, 06:33 PM	#7 (permalink)
zbbt 3rd Gear Member Join Date: Oct 2007 Location: 50 riders Posts: 1,522	Re: CRF230 head? thanks! ill get in touch with him asap.

07-17-2008, 08:07 PM	#9 (permalink)
firepower354 3rd Gear Member Join Date: Oct 2006 Location: Flint MI Posts: 5,187	Re: CRF230 head? 31.5/27, from what I can find. Google is GOD

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