94 sohc protege pistons in a miata?
#1
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94 sohc protege pistons in a miata?
I have been searching and read once that 92-94 pistons from a SOHC protege motor would make 8.2:1 compression with a Miata head. Can anyone confirm this is true? And I am assuming it would be because of the pistons and that the rods and crank are the same in a protege and Miata motor?
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18psi, I've actually spent the better part of two hours scouring this website and a protege website. I found I once on this website at some point and they mentioned the pistons were dished, and you gave me this idea with your rods only method. I'm merely trying to minimize down time, and didn't want to have to bolt my head in and put clay on the piston...
#10
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Nevermind, signed up on a protege forum. They work well, hold up like Miata pistons do and drop the compression somewhere in the 8.3:1 neighborhood. DOHC swap is fairly common. So all I have to do is buy some good rods. Good info to know around here though.
#15
It was a 99 engine that was siezed. We took it apart, cleaned it up, the pistons were unusable, he replaced em with funky looking ones out of a protege, I remember the domes were completely different shape. They "fit", and didn't make contact when we spun the engine over by hand. Everything else was the same 99 bp4w engine.
Then when he started driving the car, it ran like absolute junk, clicking and clacking down low, and I'm guessing it pulled timing from all that noise because it was completely gutless down low, then opened up drastically up top after about 4500.
I wouldn't take my chances if doing this much work to be honest.
Then when he started driving the car, it ran like absolute junk, clicking and clacking down low, and I'm guessing it pulled timing from all that noise because it was completely gutless down low, then opened up drastically up top after about 4500.
I wouldn't take my chances if doing this much work to be honest.