99 nb with a 94-97 block?
This may be something youve all cover many times but im helping a buddy of mine. He has a 99 NB with a blown motor and he also has a complete 95 bp05 . I've read up on putting the bp4w head on bp05s but it seems they are all in 94-97 miatas. So my question is can we put the bp05 block with the bp4w head into his 99 ? I know it will drop in compression and need a knock sensor. But will it work and is it worth it?
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You will need the intake manifold from the 95 as well because they are different.
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oh ok cool, thanks. i wasnt sure if the bolt pattern for the intake manifold and exhaust manifold were the same as the 99 bp4w or not. will i still be using the harness and ecu for the 99 since ill be using the head off 99 and the block from a 94-97?
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The exhaust manifold is the same. I think there are some minor differences in the harness configurations for the bottom end, but I'm not sure. I know they were minor. The NB has a smaller and lighter weight starter if you are able to get it, too. Saving a few lbs in our cars makes a difference in ways it doesn't in larger cars.
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Originally Posted by sixshooter
(Post 20081)
You will need the intake manifold from the 95 as well because they are different.
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