Board index Flathead Power-Technical Questions, Answers, and Suggestions Big Twin Flatties ul oil pump

ul oil pump

Moderators: Curt!, Pa

Post Mon Nov 21, 2011 11:16 pm

Posts: 3
On Dick Linn's website there are two pictures of a flathead feed pump with gerotor type gears.
anyone know who makes this? pictures show box with part #587-09. Is this available?

I emailed vt-cycle in Findland, they make this pump, but it sells for 650 eros? Which would make it about $866.00 US.
I hope this is wrong as I don't think I could afford one from them!
Thanks for all the imput on this.
Last edited by markcoc on Thu Nov 24, 2011 9:38 pm, edited 1 time in total.

Post Tue Nov 22, 2011 12:57 pm

Posts: 84
Dick told me that Bruce Argetsinger of Enfield Racing was going to be introducing such a pump.

Post Tue Nov 22, 2011 1:07 pm

Posts: 575
Location: devon,england
search the archives ,for ul oil pump or similar ,one of the members here bought a greotor pump from a company in scandanavia and posted about it. regards jib
Dude, check out that jibhead, he's crazy. Hasn't been sober for 40 years

Post Tue Nov 22, 2011 9:22 pm

Posts: 83
The seller is Vesku at
I think member fhsmith1 has this pump in his UL, but I'm not positive. Ask him.

Post Wed Nov 23, 2011 6:12 pm

Posts: 1643
Location: Interlaken, NY USA

I talked to Bruce at Jefferson, Pa a few weeks ago, the oil pump is in the works, but not released as yet. He has a few projects on the burner presently, (as always) but will be working on getting that one finished up.

Post Thu Nov 24, 2011 10:23 am

Posts: 128
Location: BRANFORD, CT

Hi Guys,

Rumors are correct, I have been working on the gerotor pump for over a year now.
As I am writing this, I have prototypes and am doing the initial bench testing. The main thing to sort out is that the gerotor pump puts out so much oil that in order to keep from overwhelming the return pump, I have to establish the correct size internal orifices.
The plan is to get them out for actual road testing this spring. One on Dr. Dicks bike and also a couple of racers.
I will keep you posted.

Bruce Argetsinger
AHRMA Dirt Track # 67J
Bruce Argetsinger
AHRMA Dirt Track # 67J

Post Tue Nov 29, 2011 4:36 pm

Posts: 216
Location: Georgia
I do have the VTcycles pump. It works well, was easy to install and existing return system is no problem. Only problem is that they did nothing to seal the oil from leaking through the cam bushing. Mine will puke out oil if left sitting several weeks. If Enfield racing does a similar pump they should consider a remedy for this problem.


Post Fri Jan 06, 2012 11:28 am

Posts: 11
Dear Flat-Head lovers,

Yes the CHP 587-09 Gerotor oilpump is available now.
It is manufactured here in Sweden by Cala's High Performance
Extensive testing been done in test fixture and on UL's on the
road. It pumps one quart in 45 seconds @ 30 psi, the stock
scavenger pump does one quart in 30 seconds. It can easy
handle piston cooling jets and this means no more glow hot
engine and barely warm oil tank. You get the same type of
oil circulation as the OHV's. Now you can go full throttle even
with long strokers without seized pistons. It is practically a
bolt on operation and we recommend 20W-50 oil.
Our English website is currently under construction, but you can see pics on the Swedish
We sold a number to Finland Vt-Cycle as mentioned on
the FHP forum.Those guys are very happy with the CHP pump. Retail price $499
Sincerely Carl Stejmar

Post Fri Jan 06, 2012 11:36 am

Posts: 11
Tried to attach some pics of the CHP oilpump but those were to big.

If interested E-mail and I can send Pics and more info

Cala's High Performance
63504 Eskilstuna

Post Fri Jan 06, 2012 4:32 pm

Posts: 216
Location: Georgia
On the 2nd page is the oil pump. I paid WAY more money. Only problem is the oil still leaks from the tank in the gearcase.
F ... /flathead/

Return to Big Twin Flatties