Lookie what I ran up on.

[Dragstews]

One weird oil pump for big twins....

All I have for it is the pump body.



It uses geo-roto pump gears from a Twin Cam motor..

I been running one very close to this pump on my 52 made by DPD ... But it uses the geo-roto gears from a 77-up Sportie ...



Not long ago I found another like mine and nailed it down for a Monster 103" Pan build...





It was missing a few parts too. Did find all the parts to complete it and got it set back in a box for the 103" BBB (Billy-Bad-Boy) scoot ...
__________________________________________________ _______

Would like to compete this pump (First photo in thread) being the Twin Cam pump gears are much larger than the Sportie gears...
(More flow & return)

If anyone has parts or knows where some are for this odd-ball pump, Please get in contact with me....

[farmall]

Doesn't look like you need much. What's actually missing? I see housings, rotors, gears and the shaft. Circlips, springs,Woodruff keys and check balls are easy to source by size.

[Dragstews]

That's the one that will be used on the 103" Pan motor build....
It's all together ... Done !!

The pump body in the first photo is all I have of it ...
Missing the rest of it ...

The pumps hadn't been made in about 25 years and running up on the parts to finish that pump will be a hunt for a .....



At the moment it's not going on a motor job, just wanted to get a head start with hunting up the parts and have it ready for a future build..

[tat2joeelliott]

hey dragstews. I have the dpd usa oil pump on my evo and its kinda apart right now. here are ther few pics i have of it but i'll be working on it tomorrow i can get some more pics. i actually design parts in cad and cut them on a mill and was seriously thinking about making a few of these.

[tat2joeelliott]

[Dragstews]

.... ....

The pump is a good pump ... Really should be on the market again ..
Another pump that should be available is the "Pro-Flow" .. It uses a georotor feed gear but on the return side uses a huge spur gear ...

[tat2joeelliott]

it is a great pump actually.. i run it in my bike because we built it frankenstein... it is a crank case breather with cylinders we made from chrome moly and inserted cats iron sleeves.. pistons are super tight.. 13:1 compression 3 13/16 bore and 4.5 stroke.. dual plug heads in a rigid frame that my dad built.. it has external return lines like a shovel. because the pistons are so tight they need alot of cooling.. but yeah i'd really like to know what geo roitors they use or where i can get some... i know they say 77 and up sportster but i think they are a different lobe count

[tat2joeelliott]

[farmall]

.... ....

The pump is a good pump ... Really should be on the market again ..
Another pump that should be available is the "Pro-Flow" .. It uses a georotor feed gear but on the return side uses a huge spur gear ...

Which is the best of the two and is there any feature you'd like to add?

[tat2joeelliott]

unless you find someone selling one you cant get either one