Oil pump pics/info - a little help?
01-31-2009, 06:57 PM
Post: #1
Oil pump pics/info - a little help?
Hey guys, I'm looking for a little help on figuring out the different variations of 4ag oil pumps. If you have these oil pumps laying around, or spare engines that you can pull them off of. I'd like a few semi-high quality pics & a measurement.

What I'm looking for is:
A. Picture of the rear pump gear cover on the pump
B. Picture of the pump gear in the pump (cover removed of course)
D. Picture of the housing w/pump gear removed
C. Measurement of the thickness of the pump gear in 'mm'

1. 85-87 Bigport/3-rib (Bluetop)
2. Late 87-89 Bigport/7-rib (lowcomp)
3. Early model GZE
4. 90-91 Smallport (highcomp)
5. Late model GZE
6. Silvertop 20V

And if someone feels like it
7. Blacktop 20v

I hope there's enough people with them laying around I can figure out which one is the one I really want. Except for the BT 20v, which I know has a different front to it for the hydraulic timing belt tensioner it's equipped with; they are all interchangeable.

If you guys don't want to host the pictures, feel free to email them to me. Put my username in front of '@hotmail.com' and send me the pics & measurement, thanks.


BTW. Yes I've seen/read bills site, several times as it's a wealth of info. But I've come across some other info and want to see if it's right.
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