CRF230 w/stock piston - Web Cam #??


6 replies to this topic
  • arl_racing

Posted October 10, 2007 - 05:22 AM

#1

I know this question has been address in different ways for years. I have searched the board and I find a lot of different info and when I go to Webcamshaft.com I get only one cam listed and it confuses me about the lift numbers.

I see a lot of cams listed for the CRF150F and they show specs of .326+ lift and then I see listed numbers for CRF230F and they spec lift at .300 and others list the 230 cam in the .280 range for the performance cam?

Is the CRF230F cam supposed to have lower lift than the CRF150F???

I am looking to do the following mods only to my engine.

  • CAM Shaft - for all around performance.
  • 30mm XR250 Carb
  • Powroll 10.5 Compression piston or BBR 240 Kit (If needed for the cam)

I would like to just do the cam and carb if it would be a good match with a stock piston. I will do the piston if it is a big improvement.

So, what part number from Web is the CRF230F all round performance cam that uses stock springs?

  • arl_racing

Posted October 10, 2007 - 05:54 PM

#2

Okay, I called Web Cams today to get their answer and they say the .300 lift cam is there best peroformer for the crf230 and that is the only on listed but they do have other grinds available if requested.

They also told me that they claim a 5hp gain just from the cam. They did not say rear wheel or crank power though.

Either way I decided to go ahead and order the web cam.

Now I am trying to decid on the piston as I patiently wait to get a 30mm carb.

I need some help... will the web cam lower effective compression enough to use a wiseco 11.1 stock bore piston on 91 octane pump gas?

  • CasperMX18

Posted October 11, 2007 - 07:03 PM

#3

i couldnt help you and since nobody else is, try CRFs Only

  • heybuddy1901

Posted October 11, 2007 - 08:55 PM

#4

Okay, I called Web Cams today to get their answer and they say the .300 lift cam is there best peroformer for the crf230 and that is the only on listed but they do have other grinds available if requested.

They also told me that they claim a 5hp gain just from the cam. They did not say rear wheel or crank power though.

Either way I decided to go ahead and order the web cam.

Now I am trying to decid on the piston as I patiently wait to get a 30mm carb.

I need some help... will the web cam lower effective compression enough to use a wiseco 11.1 stock bore piston on 91 octane pump gas?


i plan on running the 11:1 wiseco with a custom grind cam.. i have been told i shudnt have any problems.

  • arl_racing

Posted October 12, 2007 - 05:43 AM

#5

I hope your setup works out and I am anxious to hear if you are able to run pump gas. Please post results when you get them.

In the mean time... anyone else running 11.1 stock bore? Reply with what gas you are running. Thanks

  • arl_racing

Posted October 31, 2007 - 10:01 AM

#6

After doing some research I finally made my choices and got everything installed this week.

I went with a Wiseco 11:1 stock bore piston and Web cam #282. This is the cam that is listed on their website for the CRF230. I kept the stock carb and jetted with a 125 main and a 45 pilot with the stock needle on the 4th from the top clip.

After an initial cam break-in and then two heat cycles to seat the rings, I took it around the block a few times to get a seat of the pants impression.

Well at partial throttle and lower RPM I did not notice much difference, it felt like the stock bike (uncorked). I rode it around for about 15 minutes taking it easy.

Then today I took it out again and got on it a little bit. The front end will power wheelie in first and with a little on-off-on the throttle it will pull easily to the sky in second. Keep in mind that with the stock cam and piston I was not able to get the front end off the ground in second with out a lot of persuading and leaning and believe it or not no wheelies in first cause the power signed off too soon. I have not gotten a chance to get the bike on dirt yet and really rev it so I cannot say how great the setup really is but so far I like it. (I am using a 14 tooth front sproket and 49 rear)

I was not looking for major power, just a reliable boost that could get my front end in the air when I wanted to loft a log or rut. So far, this seems to be the ticket.

Also, I am running pump gas with this combination and as of yet have not had any signs of detination. And my plug is light tan so I will keep an eye on it and do some full throttle runs when I get a chance to verify main jet size.

And it may be worth noting that as a fairly mechanically inclined person that has rebuilt 2-stoke top-ends, a few chevy 350's and a old honda 500 single, It took me 2.5 hours to get the motor out of the frame and torn down, 1.5 hours reassembling the motor (The oil rings on the piston were a real pain and I ended up bending one and had to replace it, so be very careful there) and 2 hours putting the bike back together. So this is definitely an all day job or all weekend job for most people.

  • apo1022

Posted November 27, 2007 - 03:38 AM

#7

Do you have to replace the valve springs when running a web cam and will the web cam work in the 2006 crf230f because it only state it works up to 2005 models???





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