What is different about the NA8C BP-ZE and NB8A BP-ZE

Engines, Transmissions & Final Drive questions and answers

Moderators: timk, Stu, -alex, miata, StanTheMan, greenMachine, ManiacLachy, Daffy, zombie, Andrew, The American, Lokiel

User avatar
Matty
Racing Driver
Posts: 1652
Joined: Wed Apr 23, 2003 11:00 am
Vehicle: NB8A
Location: Melbourne
Contact:

Postby Matty » Mon May 14, 2007 8:11 pm

See solomiata.com - quite a few changes but the heads are interchangeable (along with the intake manifold)

The NB has a much better flowing head.

The bottom ends are fairly similar, but the NB runs higher compression.

User avatar
green_comet
Car Detailing Guru
Posts: 1848
Joined: Tue May 24, 2005 1:41 am
Vehicle: NA8
Location: Melbourne

Postby green_comet » Mon May 14, 2007 8:33 pm

yeah the NB8A has a better flowing head, higher compression, and a different intake manifold. The intake manifold has butterflies in it the open up at a certain rpm creating better mid range torque. The engine also no longer uses a cam angle sensor..

I think you should sell it..

Rob E
Fast Driver
Posts: 485
Joined: Wed Apr 23, 2003 11:00 am
Vehicle: ND - 2 GT
Location: Sydney
Contact:

Postby Rob E » Tue May 15, 2007 6:46 pm

NB engine also has solid lifters


Return to “MX5 Engines, Transmission & Final Drive”

Who is online

Users browsing this forum: No registered users and 3 guests