oil pump, 2a, 2b

[pimptrizkit]

well just got my borthers bshort block back, an im tring to make sure we got the right oil pump in the motor,

the high volume pump, we used an n/a block for crank and parts, and got the block back with out pump, and then got the pump back in the box of misc stuff..

so any one hve any idenitifing marks to tell th difference?

only thing i can find is the cap's are different and one i marked 2a and the other is marked 2b, i belive 2b is in the short block now, but will check again tonight.

 

[IJ.]

Longer pump is the GTE one!

 

[JoeC]

we can't find much of a different thats why we were asking about the 2a and the 2b.. We arent sure if we got the correct oil pump back from the machine shop.. Like.. two non-turbo pumps or two turbo pumps?

Also.. is there a different in 87-88/89-92 NA and turbo pumps??

for example.. 87-88 non-turbo number may be 1a.. while 89-92 non-turbo is 1b.

But 87-88 turbo is 2a, and 89-92 is 2b??

 

[pimptrizkit]

any turbo guys have their block on stands?>>///...

 

[pimptrizkit]

well disabled the pumps, and found the correct pump was in the motor,

lets my mind rest.,

i'll post some pics up latter so people can reference this for searches..

 

[pimptrizkit]

the high volume pump gear is on the right, and here's a pic of the lid

and the under side of the lid,

notice the dowl pins in the lid to keep it from moving, this was the 2a pump. the 2b pump did not have these.