what oil pump do i need!!??

[1988festivazoom]

i ordered an oil pump off ebay and its the large crank for the b6t, my engine is the small crank!! what year and model had the small crank? i have no clue what my engine came out of :tard:

[Hot_Wheels]

im pretty sure a 1988 mazda 323 gtx was a small nose

[1988festivazoom]

Well my pump has "b660" casted on it and the pump I bought has "b6S8" on it. I found one on ebay that is oem from mazda in the box that has the cast #b660 and has 6 bolts on the rear of the pump like mine.
The big nose has 7 bolts on the rear. So I'm waiting to see if I can get a refund for the one I bought bc its a 323 gt that has the small crank and he had it listed wrong bc he sent a big crank pump.

[Hot_Wheels]

why are you replaceing the pump? did it fail? to be honest if you plan on building a motor down the road i would look for the big nose 1.6 crank and just swap it in, the short nose are known to fail. put a wanted post on turbomiata.net or miata.net, they can be had for a 100 or less, most of those guys give 1.6 stuff away due to they rather swap in a 1.8

[1988festivazoom]

So is the 91 capri a big nose crank? And has the same main cap sizes and rod sizes correct? There is one at my local jy I can go grab for cheap if that's the case.

[1988festivazoom]

why are you replaceing the pump? did it fail? to be honest if you plan on building a motor down the road i would look for the big nose 1.6 crank and just swap it in, the short nose are known to fail. put a wanted post on turbomiata.net or miata.net, they can be had for a 100 or less, most of those guys give 1.6 stuff away due to they rather swap in a 1.8

No the pump didn't fail, I'm replacing every componet. The engine sat for god knows how long. So I would like to just have the assurance of all new parts.

[angrygocart]

http://323gtx.homestead.com/engine.html
http://miata.net/garage/crankshaft.html

[1988festivazoom]

Thanks for the info! I will have to see if the capri is a late 91 or early 91 I guess bc there anr NO miatas in my area.

[1988festivazoom]

Looks like the kia sephia and some protoges have the long nose crank as well.

[1988festivazoom]

After reading the miata info on the above link. I have the fig#3 crank. (Small diamater with long keyway) this crank was a revision I guess and doubled the keyway area. I don't need a big crank to run big hp.