"Plug and play" out of box - After some testing, I ended up with the already installed main jets #155. The "needle" -more precisely, the MJN-tube, had the best performance in the middle (Clip 3 from top) position (Also this setting from factory) . So basically I have only altered the slow fuel screw (Pilot screw) from 1 to 1.5 out, and accordingly the slow air jet from aprox 1 to somwhere between 1.75 to 2.00 turns out. I am also running power filter, and adaptors as well. Engine is 2mm overbore (1109 cc), 1:12 pistons, race-cams, dual valve-springs, zx11-D ignitor etc.The bike pulls like a train, and is very linear and responsive with this settings. Best carburators I have ever experienced :-)
View Detail2,187.37 USD (325,600 JPY)
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Product detail
Intake Diameter:Φ39
Black Body
**If the fuel cock interferes with the installation, it may be possible to avoid it by replacing the cock with an external cock such as Pingel (not available for vehicles with fuel pump)..
Carburetor Pitch :75-86-75
Mount Adapter Outer Diameter :40mm
Mount Adapter Length :42mm
[Separately required parts for installation]
・Yoshimura Oil Breather Tank Kit
One of the following products is required for the fuel cock.(PINGEL products are used as a set)
・Fuel cock for GSX-R750 early type (SUZUKI stock product)
・Fuel cock for DR-Z400S K1 to K3 (SUZUKI stock product)
・1/4" NPT with PINGEL Single Out Reserve
・PINGEL Adapter Plate, Pitch 34mm, 1/4 "NPT
Stock throttle holder can be used.See below for required parts.
・Throttle Grip Inner Pipe for TMR Large Body
・OPEN side throttle wire for GPZ900R (KAWASAKI stock product)
・CLOSE side throttle wire for GPZ900R (KAWASAKI stock)
・Secondary air blinds SET for ZRX1200 (ZRX1200R/S only)
Optional parts
・DUAL STACK FUNNEL SYSTEM Basic Kit for FCR39
[How the DUAL STACK works]
The DUAL STACK Funnel is designed to provide the performance of both the Short Funnel and the Long Funnel plus alpha.Each funnel does not work only in its own area, but each funnel brings synergistic effect to each other, which leads to the improvement of combustion efficiency, in other words, the improvement of performance.
■In the case of low opening range
・1st funnel:
In addition to the rectified air inhaled from the 2nd funnel, it assists the intake of +α of negative pressure.This allows more air to be drawn in and burned than would normally be the case, leading to an increase in power output at low engine speeds.
・2nd funnel:
It acts as the main funnel and draws in rectified air.
■At full throttle
・1st funnel:
It acts as the main funnel and quickly draws in the necessary amount of air for combustion.
・2nd funnel:
Due to the negative pressure caused by the 1st funnel intake, the rectified +α intake air is assisted.This allows more air to be taken in and burned than would normally be the case, leading to an increase in power output at full throttle.
Points of Attention
* If there may be an instruction manual included, it will be written in Japanese.