Hello;
Je suis en train de réviser mon 200 KDX et en lisant diverses docs (Fredette racing entre autres) je me rends compte qu'il y a possibilité d'optimiser ma carburation. Entre autres choses en changeant l'aiguille. On me parle d'une "1173" pour mon Keihin PWK 35 (et d'autres gicleurs aussi) qui feront une carburation plus adaptée à la ligne FMF.
Le problème, c'est que je ne trouve nulle trace de ces foutues aiguilles nulle part.
Partout où je cherche, sur le net, on me parle d'une série de lettres pour désigner les différents types d'aiguilles Keihin mais pas de 1173 ou autres …
J'ai raté quelque chose ?

Posted December 4, 2010 (edited)
Never mind the 1173. CGK DGK are good genuine keihin needles as an alternative. If you want to keep the stock, it's a BGP I think, maybe BGN though. I'll double check that for you in a few. 1173 is just a kawi part number. It's a keihin needle
Yup, 1173 converts to BGP. 1172 is BGN. The CGK/DGK needles seem to offer enhanced performance for the E series carb over the stock 117x needles, but they run a bit richer overall. You'd usually need to go down 1-2 on both pilot and main from your baseline when switching to these needles, and try the needle in 2nd clip to start. I run my CGK in the first clip. The CGK gives pretty good snap up top, the DGK is more linear all the way through. I keep both needles on hand, and may switch from one to the other depending on riding conditions. I have a less tiring ride using the DGK if it's one of those tight single track kind of days. The CGK is more fun on open trails where you spend more time in the upper RPM range.

Avec cela, un début de réponse ?

Posted December 4, 2010 (edited)
Never mind the 1173. CGK DGK are good genuine keihin needles as an alternative. If you want to keep the stock, it's a BGP I think, maybe BGN though. I'll double check that for you in a few. 1173 is just a kawi part number. It's a keihin needle
Yup, 1173 converts to BGP. 1172 is BGN. The CGK/DGK needles seem to offer enhanced performance for the E series carb over the stock 117x needles, but they run a bit richer overall. You'd usually need to go down 1-2 on both pilot and main from your baseline when switching to these needles, and try the needle in 2nd clip to start. I run my CGK in the first clip. The CGK gives pretty good snap up top, the DGK is more linear all the way through. I keep both needles on hand, and may switch from one to the other depending on riding conditions. I have a less tiring ride using the DGK if it's one of those tight single track kind of days. The CGK is more fun on open trails where you spend more time in the upper RPM range.

Avec cela, un début de réponse ?

Merci ! Je vois qu'il y a une correspondance entre les références. Mais p....n, c'est déjà compliqué avec ces histoires de gicleurs, d'aiguilles, de puits d'aiguille et maintenant de références changées … C'est un vrai labyrinthe cette histoire de carburation.