Added reply in a thread PWK 38 tuning for first ride on a TC 250. I got this close? 7/6/2020 2:37 AM

Hi jeffro503, I have a KTM 250 exc 2017 with a PWK 38 Keihin air Stryker. For what it’s worth , here are my settings so far . PJ 42 , MJ 178 , NECJ needle on 3rd clip. The stock reed cages are average at best so I swapped that out for a Vforce4R reed ... more »

Added reply in a thread 2017 KTM 250 exc Keihin carb jetting 1/23/2020 10:42 AM

Hellion, cheers mate, I do intend on going to a 170 main when swapping the needle to the N3CH needle.

Added reply in a thread 2017 KTM 250 exc Keihin carb jetting 1/23/2020 10:16 AM

Well AJ, amaze yourself no more. In my opinion, the Mikuni is a mismatch with this bike. It was an after thought for KTM who wanted this to be the model to have the TPI but it wasn’t ready to go into production and Mikuni supplied a carb to fit the hole. ... more »

Started new thread 2017 KTM 250 exc Keihin carb jetting 1/22/2020 6:16 PM

I thought I would post this to help any one struggling to getting the jetting right on there KTM 250. I swapped out the original Mikuni out of frustration and went to a Keihin PWK 38 because I consider this carb better suited to the bike. I bought a ... more »

This forum thread has 13 replies

Added reply in a thread KTM 250 exc 2017 Keihin jetting 1/16/2020 1:46 PM

A Mikuni TMX 38 is standard

Added reply in a thread KTM 250 exc 2017 Keihin jetting 1/16/2020 12:32 PM

Cheers mate , I will give him a ring. I bought the bike new and it has done less than 20 hours. I changed the Mikuni carb with a new Keihin and JD kit, but struggling with this pipe bang/ decel issue.... hoping it can be sorted with jetting rather than ... more »

Started new thread KTM pipe bang 1/16/2020 11:07 AM

Having jetting issues with my KTM 250 exc 2017. I swapped out the Mikuni for a Keihin PWK 38 and have been sorting the jetting. The bike has what I would call pipe bang or a chugging on de acceleration. I have up the pilot from 42 to a 45 which seems ... more »

This forum thread has 2 replies

Started new thread KTM 250 exc 2017 Keihin jetting 1/14/2020 10:04 PM

Scratching my head with this one... I swapped out the Mikuni that came standard and inserted Keihin 38 PWK. Fitted a JD jetting kit and have arrived at : blue needle on 3rd clip, main 172, pilot 45, a/s 1 1/2.... running Klotz R50 at 60:1 with 95 octane. ... more »

This forum thread has 8 replies