P-38.....ANY GOOD ??

6 replies to this topic
  • Alain

Posted January 02, 2002 - 09:56 AM


to anybody who has used one....

Does it make a noticable difference?
Is it worth the money?


  • James_Dean

Posted January 02, 2002 - 10:37 PM


Depends on your pocketbook and time. You still need to adjust the carb to offset the reduced squirt time from the accelerator pump. Usually a clip position richer, then it produces a consistently stronger power delivery through mid-throttle. If you don't adjust, the P-38 does little to nothing for you other than save gas.

The same thing can be done nearly for free with one of a few creative solutions. Since your bike is a 98/99, Taffy suggested using a small block-connector on the pump rod to limit the stroke, easy to adjust. Kevin posted about mounting a bolt thru the bottom of the pump cover too, washers or a nut will adjust the depth.
See the "KL Mod" posting.

The '00 and new bikes have the BK Mod.


  • Alain

Posted January 03, 2002 - 02:26 AM


Thanks for the info


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  • Joel_Gibson

Posted January 07, 2002 - 12:55 PM


James Dean

Thanks for the input. I had a P-38 delivered the other day. I havent had time to put it on yet. Did you experience any problems by going richer one clip? Are there any other tricks to making this mod worth while?

  • James_Dean

Posted January 07, 2002 - 03:07 PM


The other suggestion is to get a carb needle from either the YZ426 or YZ250F. Optional needle OBELN (P/N 5NL-14916-EN) works great and adds more mid-range. Try clip #4.

OBELN, EKN, and EJN have no difference other than clip position. (ELN#4=EKN#3.5=EJN#3)


[ January 07, 2002: Message edited by: James Dean ]

  • DPW

Posted January 07, 2002 - 03:42 PM


A little research and I found the answer to my question I had posted.


[ January 07, 2002: Message edited by: DPW ]

  • Jekel

Posted January 07, 2002 - 04:08 PM


i have the P38 installed, another great mod is the TY-Davis throttle wheel. I didn't realize how my throttle cables had been frayed until I changed wheels.


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