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131mirafiori home => The Garage => Topic started by: gunobla on March 01, 2010, 10:40:15 AM



Title: External oil pump
Post by: gunobla on March 01, 2010, 10:40:15 AM
I am thinking of having an external oil pump and doing away with the internal oil pick up.  I have a Weaver single stage oil pump that I intend to run at about half engine speed.  The oil filter would be remote.  The oil outlet in the sump would be in the middle of the sump longitudinal wise at the bottom.  I would probably extend the depth of the sump by around 50mm. 

Has anyone else done this successfully as I would like to know how the external pump was plumbed into the system and what changes were necessary internally such as removing of the oil pump drive etc and any other ancillary changes. 

I have a bottom pulley that came out of a car with power steering so I can dispense with the power steering unit and put the Weaver oil pump in that location.  The oil pump can go on the bracket that held the power steering unit. 


Title: Re: External oil pump
Post by: gunobla on March 01, 2010, 10:41:51 AM
It will not be a dry sump set up but be very similar.


Title: Re: External oil pump
Post by: Thotos on March 01, 2010, 11:52:13 AM
Do you have a block mounted distributor? If so you need the oil pump in place to locate the distributor drive gear.


Title: Re: External oil pump
Post by: Walezy on March 02, 2010, 06:58:33 AM
There is no need of oil pump in block, the distributor gear has it's own bushing. I had dry sump in my 16v engine and i was using distributor in block.


Title: Re: External oil pump
Post by: turb on March 02, 2010, 07:26:57 AM
What exactly are the advantages of the system? I'm guessing it would give you the ability to tune your oil flow by changeing pulley size? Maybe run an oil cooler?
I don't like the sounds of extending the depth, as the sump is already one of the lowest points on the under tray, add that to a lowered race car, mix in a few rumble strips, might not be a good recipe.
So basically I've just asked questions and given no answers! Hope this was helpful :-\


Title: Re: External oil pump
Post by: gunobla on March 02, 2010, 10:30:00 AM
The pulley size will allow the pump speed to be altered but I can change the flow by adjusting the valve setting on the pump.

The pick up from the normal set-up seems to be an issue with keeping oil around it and the pick up sucking the bottom of the sump upwards.  Having the outlet for the external pump on the very bottom of the sump will overcome those issues. 

I will be baffling the sump as well.

I was hoping someone had done a similar thing so I could find out where is the best place to plumb in the Accusump and the pipework to get the oil into the filter and back into the motor.


Title: Re: External oil pump
Post by: Thotos on March 02, 2010, 03:10:23 PM
There is no need of oil pump in block, the distributor gear has it's own bushing. I had dry sump in my 16v engine and i was using distributor in block.

Well, I live and learn! I thought the oil pump/distributor drive gear is located by the oil pump shaft. It's a long time since I've looked there but I can't remember the gear having its own bushing. Then again I can't remember anything these days so I am sure you are right and I am wrong. 

I was hoping someone had done a similar thing so I could find out where is the best place to plumb in the Accusump and the pipework to get the oil into the filter and back into the motor.

I have an Accusump and a remote oil filter but an in-engine oil pump. The oil pump pickup is modified (shortened) as I have a big-wing baffled sump. The Accusump and remote filter pickup in my case is plumbed into a pickup plate where the oil filter used to be.

(http://131mirafiori.com/smf/index.php?action=dlattach;topic=171.0;attach=90;image)

I can take close-up photos of the Accusump and oil filter plumbing if you like.



Title: Re: External oil pump
Post by: gunobla on March 02, 2010, 06:51:53 PM
My engine will have a 16 valve head.

The close up pictures would be most appreciated.   Thanks.


Title: Re: External oil pump
Post by: miro-1980 on March 03, 2010, 08:17:18 PM
16v engine...

 Interesting .

What model did it come off.

Miro 


Title: Re: External oil pump
Post by: Testament on March 04, 2010, 12:14:56 AM
16v engine...

 Interesting .

What model did it come off.

Miro 

late model 16v im pretty sure - from a delta/tipo/fiat coupe/thema etc.


Title: Re: External oil pump
Post by: gunobla on March 04, 2010, 09:34:48 AM
The head is off a Coupe and the bottom end is Croma.


Title: Re: External oil pump
Post by: sid131 on March 04, 2010, 06:21:11 PM
Geoff how about a external beer pump from the keg (small) direct to the mouth? ;D ;D ;D


Title: Re: External oil pump
Post by: turb on March 05, 2010, 04:26:49 AM
The system sounds good but I would still avoid lowering the sump. When building a winged sump one of the advantages is that you can raise the depth to create more ground clearance. A 2mm thick bottom plate is also advised to stop deflection caused by the suck of the pick up so I'm guessing thats a common problem.
Are you going to use the later model sump mounting plate or convert the old style sump to fit?
Regards
Jeremy.