MMD-B6N7-12-183-16 - Mazdaspeed Motorsports Development solid lifters


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Part #: MMD-B6N7-12-183-16
Notes: (16) lifters for B6/BP DOHC head
MSRP: $224.00
Your Price: $200.00

Specs

INNER DIAMETER 27.99mm / 1.102" (updated 11/7/18)
LENGTH 26.88mm / 1.0582" (updated 7/5/12)
OUTER DIAMETER 29.96mm / 1.1795" (updated 7/5/12)
STEM DIAMETER 5.98mm / .2355" (updated 2/22/16)
STEM TIP DIAMETER 5.54mm / .218" NOTE: THERE IS A STEP-DOWN FROM THE DIAMETER OF THE STEM TO THE BOTTOM 3.58mm OF THE TIP (updated 6/16/16)
STEM TIP TO HEAD SURFACE 15.553mm / .61225" (updated 7/5/12)

This Item Also Available In

Part Number Price Notes & Specs
MMD-B6N7-12-183 $13.30 Notes EACH lifter for B6/BP DOHC head
HEIGHT 26.88mm / 1.0582" (updated 7/5/12)
INNER DIAMETER 27.99mm / 1.102" (updated 11/7/18)
OUTER DIAMETER 29.96mm / 1.1795" (updated 7/5/12)
STEM DIAMETER 5.98mm / .2355" (updated 2/22/16)
STEM TIP DIAMETER 5.54mm / .218" NOTE: THERE IS A STEP-DOWN FROM THE DIAMETER OF THE STEM TO THE BOTTOM 3.58mm OF THE TIP (updated 6/16/16)
STEM TIP TO HEAD SURFACE 15.553mm / .61225" (updated 7/5/12)

All Fitments

MAZDA
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1985 - 1993 323 ALL ALL ALL ALL ALL ALL
1989 - 2005 MIATA ALL ALL ALL ALL ALL ALL
2004 - 2005 MIATA MAZDASPEED ALL ALL T ALL ALL
1990 - 1994 PROTEGE ALL ALL ALL ALL ALL ALL
MERCURY
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1991 - 1994 CAPRI ALL ALL ALL ALL ALL ALL

Product Description

Mazdaspeed Motorsports Development shim-under-bucket style solid lifters can be used to upgrade NA (HLA = Hydraulic Lash Adjuster) or NB (solid disc-over-bucket) valve trains.

The first image below illustrates the various valve train setups. The second image shows the catastrophic damage to the head that happens when an NB disc-over-bucket style disc is “spit out.”

After a fresh valve job is completed, assemble the valve train and use stacked feeler gauges to measure the lash (the gap between the top of the lifter and the lobe of the camshaft) of each lifter. Cold lash clearances (with caps installed) should be:

INTAKE = .20mm (.008”)
EXHAUST = .25mm (.010”)

Once the needed thickness(es) are known, order Supertech lash caps. List the needed sizes in the notes field when you check out.