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Old 04-02-2013, 04:53 PM   #260 (permalink)
Allch Chcar
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Join Date: Jan 2008
Location: North Coast, California
Posts: 429

Cordelia - '15 Mazda Mazda3 i Sport
90 day: 37.83 mpg (US)
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Quote:
Originally Posted by trooper Tdiesel View Post
ive got the split port SOHC it has a max tourque of 3,750 where the Zetecs have it at 4,500
thus the SPIs have a deeper geard set up.

final is 3.61 or 3.85?
O\D is about 25%
its a IB5 trans thats with the spi, but i don't think it would bolt up to a Zetec


keep on the look out for a under drive pulley, the common one is for the crank. but there's also a alt and water pump one.
new there rather spend-y so keep on the look out for used ones.
The SOHC has the 3.61. The Zetec uses the MTX75 with 3.85 FD.
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