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i read on a site that the 1.8 BP zorst manifold fits the fe-dohc with minor hole matching.. thats alot of bolony, it's not even close people. I'm not sure about the head size etc on the 1.8L F8 but maybe the manifold is more suited to it.
 
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The F8 DOHC uses the same head right down to the "FE3N" stamp as the FE-DOHC, the only difference between the engines is the stroke.

I've read that the 1.8 BP exhuast manifold would fit with some rather drastic port matching, and drilling for new mounting studs. I've never read that it was bolt on.

I read this on RandyS's page, He's torn down both Miata BP's and a couple FE-DOHC's, so he has some say in the matters.

If your thinking of the intake manifold, no, its not anywhere close.

On a side note, Is there any other mazda motor that uses a tuned length intake manifold besides the 1.5 litre in my 2nd gen protege (I'm not sure of the engine code, I'm starting to hate that car)
 

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my4isrobs said:
i read on a site that the 1.8 BP zorst manifold fits the fe-dohc with minor hole matching.. thats alot of bolony, it's not even close people. I'm not sure about the head size etc on the 1.8L F8 but maybe the manifold is more suited to it.
I have an aftermarket BP exhaust manifold on my FE3. What is so hard about it?

http://members.aol.com/FE3N/HKSDIYturbomanifoldflange.jpg

I drilled two holes, oblonged the rest and then gasket matched 2 ports. I guess using a dremel is beyond your talent.

http://members.aol.com/FE3N/FE3-08102003.jpg

A NA header for a Protege would even be easier as the flange is flatstock steel.

Randy
 
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