engine block compataibliity?
#4
94-97 1.8L was 9.0:1 compression
99-00 1.8L was 9.5:1 compression
01+ was 10:1compression
04-05 Mazdaspeed was 9.0:1 compression
All blocks are interchangeable. 94-97 can also run a 99-00 head. 01+ Have VVT on the heads, hard to make work on other years. Mazdaspeed Miata engine/head was almost identical to the 99-00 Miata.
Im running a 96 block in my 99. If you can, try to get a 99 head, its better then the 94-97 heads.
99-00 1.8L was 9.5:1 compression
01+ was 10:1compression
04-05 Mazdaspeed was 9.0:1 compression
All blocks are interchangeable. 94-97 can also run a 99-00 head. 01+ Have VVT on the heads, hard to make work on other years. Mazdaspeed Miata engine/head was almost identical to the 99-00 Miata.
Im running a 96 block in my 99. If you can, try to get a 99 head, its better then the 94-97 heads.
#10
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What's your susggestion? Replace the whole NB engine or keep the Moditify NA8 head with an NB block?
THanks you all again.
#11
i would keet the whole NB engine as assembled, and take the NA motor and throw some internals in there in the mean time...and then just drop it back in
BTW-thats kind of what im doing, except both my motors are from NA's, one blew and i replaced it and i will be building it while having fun with newer motor
BTW-thats kind of what im doing, except both my motors are from NA's, one blew and i replaced it and i will be building it while having fun with newer motor
#13
Not to mention the 99 eliminates the HLA's, has better cams... and never ticks.
Has your friend confirmed the source of burning oil? There is more then jsut bad rings that can cause oil to burn. Bad PCV and valve seals are oil burners too. Do a compression check on the old motor. If he had headwork, then the valve seals have been messed with and could be the cause.
But if he would rather replace everything, just get some good internals for the NB block, then swap it in and sell the NA block and head to recover some cost. Assuming he kept the paperwork from the headwork, he could get some extra $$$ for it over a regular head.
Has your friend confirmed the source of burning oil? There is more then jsut bad rings that can cause oil to burn. Bad PCV and valve seals are oil burners too. Do a compression check on the old motor. If he had headwork, then the valve seals have been messed with and could be the cause.
But if he would rather replace everything, just get some good internals for the NB block, then swap it in and sell the NA block and head to recover some cost. Assuming he kept the paperwork from the headwork, he could get some extra $$$ for it over a regular head.
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