Slide campulley for NB6/MB8
スライドカムプーリー NB（IN用） 除くVVT Black Body / Red Blue point
code:mar21021910 For NB(IN)
¥16,500(¥15,000)
スライドカムプーリー NB（IN用） 除くVVT Black Body / Orange Green
code:mar21111600 For NB(IN)
¥16,500(¥15,000)
NB Miata was released in 1977, and it is 2021 right now.
It has already been long time since then, but the slide campulley (cam GEAR) for NB has just been released though quite late now in sale.
NA and NB are like similar because there are many common parts between them, but this campulley is slightly different.
Dedicated design for NB
In case of the genuine parts
In case of the slide campulley for the early version of NB6 and NB8
The basic structures are almost the same. The difference between them is the pick-up trigger for reacting to the cam position sensor.In short, it is a protrusion for reacting to magnet.
It’s not simply easy to set this trigger on the MARUHA’s pulley for NA.
There is no space for the NA gear to cover its position and height of the trigger (protrusion) preciously.
To set up this trigger, the designing should be completely reviewed. This is the reason why the shape of pulley for NB is totally different.
Regarding required pulse reaction for NB cam GEAR, normal function level is confirmed by oscilloscope.
Weight saving
Because of securing space for this trigger and installing a center-disc to be slide type（valve timing adjustment system）, thinning on each part is difficult and eventually it tends to be heavier.
However, compared with the 405.5g of the genuine campuley, MARUHA’s NB campulley is only 309.6g as light weight type.
material
Concerning the materials, the same way as NA pulley, the outer is made of duralumin (A7075), and furthermore the surface is coated with hard anodic oxidation coatings for HV400 hardness.
This method responds friction caused by timing belt.
Scale for valve timing
MARUHA’s campulley has a scale for slide position in black & silver (shades of color) for high visibility and is also designed for exactly same neutral position of the genuine one.
The scale is marked in every 2 degrees of crank angle for making valve timing adjustment easily.
New color (orange × green) new version released
Compatible models
This NB pulley can be used only on the intake side of all NB6 and NB8 (without VVT). Regarding the exhaust side, the conventional NA pulley can be used.
スライドカムプーリー NA/NB（EX専用） ALL BLACK（2024年7月〜）
code:mar13083000 For NA全車 NB(ex)
¥18,700(¥17,000)
Please note that it is not substituted for the VVT hydraulic carriable pulley with NB8 late version.
Camshaft position sensor
We recommend that you purchase at the same time because some troubles might be caused by aging degradation or parts shortage suffered by damage.
Installing image
カムシャフト ポジション センサー
code:ZJ10-18-221
¥7,645(¥6,950)
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NEW TOPICS
CARBON TIMING COVER
