needle change

4 replies to this topic
  • miked

Posted January 04, 2001 - 01:48 PM


I changed the needle on my 2000 wr400 to a 1999 DTM on the 3 setting along with the forums recommended changes of jets. My question is, when you have a 2000 bike and change to a 1999 needle,(DTM) must you change the needle jet as well. I went to the Yamaha shop and the 1999 part number was 5BE-14947 and the 2000 part number was 5JG-14947. I noticed many 2000 wr's change to the DTM needle, but no one has mentioned changing the needle jet. Are the tapers the same? If so, why the different part number.

  • James_Dean

Posted January 04, 2001 - 04:08 PM


The hole diameter is most certainly 2.90mm on both. The '99 had the original FCR where the '00 has a newr version. Many parts have changed.

The D in DTM is the taper. The same as DRS or D**. This is 1 degree. The EKP etc. have a 1.25 degree taper. These are used on the YZ426.


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  • Tree_Crippler

Posted January 07, 2001 - 05:18 PM


A lot of 00 owners go to the DTM. For now I'm happy with the DVP. It's only 20 degrees now so I have to wait before I can spend a lot of time with the DVP.

  • mcarp

Posted January 08, 2001 - 08:34 PM


Glad to hear you are experimenting. This is the only way to realize the best setup.

I like James Dean recommendation. The EK series needles work really well w/ YZ timing on the '00. I chose an EKN for the winter, low altitude- the bike runs better than ever. Probably will drop it down to an EKP or EKQ in the spring. As far as setup, I run a WB tapered header, stock YZ pipe, YZ timing, no airbox lid, and WB powerfilter. The header didn't seem to change my jetting requirements, byt YMMV.

  • Tree_Crippler

Posted January 09, 2001 - 11:13 AM


I would like to try the E series needles this summer. I ride a lot of tight woods so power delivery is important. So far I am happy with 2 set-ups for my area.

PJ45 PJ48
DRS#3 and DVP#5
MJ172 MJ172


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