Will the real DVP step forward??
Posted October 30, 2000 - 04:43 PM
Heres my question: The dealer has ordered a DVP needle from a 2000 YZ Yamaha part no. 5JG-14916-DP. Clark references a DVP needle with a Yamaha part no. of 5BE-14916-DP in his "high altitute jetting" article in this site. Which is correct? I read another post where someone put a DVP needle in his WR and it fouled plugs. Someone else challenged the Yamaha part no. So, gang, which is correct?
As always, thanks for your help. Aside from the fouled plugs and hard starting, I love this machine and am excited (through all of your help)I am finally zeroing in on its quirks!
Posted October 30, 2000 - 06:29 PM
On the microphiche I saw this part number (5BE) the only description was "needle".
The decription for the 5JG says "needle(DVP)". But the 5JG was not a DVP but a DKP. That is where the problem starts. Don't tell the parts dude you want a DVP because then he will order you the 5JG based upon the description. What you want is a 5BE.
Just don't tell them that the reason you know this is because you got the information off the internet. Then they will look at you like you are a moron and don't know what you are talking about and how if it is the wrong part you have to take the responsability, blah, blah, blah.
Of course, I eventually got the last laugh when they did indeed check with Yamaha techs and confirmed that the 5JG was mis-labeled a DVP on the microphiche and that it would be corrected.
Posted October 30, 2000 - 07:18 PM
On the 2000 fish the number called out for a DVP needle is incorrect (5JG-14916-DP) and if you order using this number you will get a DKP needle which will be way too rich on the transition region from straight to tapered section. If any of you have gotten the DKP needle it will be too rich and cause problems between 1/16 to 3/8 throttle openings.
The DVP needle (#4 or #5 clip) in conjunction with a 48 PJ, fuel screw 3/4 to 1.5 and 172 to 180 MJ works well and provides excellent and consistent throttle response across the power band. The range of settings for the Clip, Main and fuel screw are for altitude and or fuel considerations.
Posted October 30, 2000 - 07:26 PM