Hi,

I've been thinking a lot on a way to solve the issues of sump scavenging and low oil pressure on right turns because I'm relutant to accept solutions that remove the A/C or crank balance pulleys.

Today I thought about an auxiliary shaft to drive an offset pump. I don't even know if there is space for this - I did not take a look at the engine bay space yet.

Has someone ever tried an approach like this?

 

Another one came up just right now: would it be to crazy to drive a pump from the flywheel gear?

 

not a cheap solution, but I wonder how well doing a hybrid type system would work. Come up with a pan that would allow you to feed the stock pump pickup from an external tank then use an external scavenge pump to clear out the engine and feed the external tank. Seems like the stock pump can get the job done provided it has oil available at the pickup.

Maybe a billet pan that incorporates a scavenge pump directly in it and is driven from the Bshaft cog pulley on the crank.

 

I have developed a system with an external electric transfer pump that works only in right had corners... going in for testing this spring... more info soon..

 

we tried this but it isn't viable because of the balance shaft sprocket size.. it is too big and the mechanical pump has to be underdriven by 2:1

 

can you update us after you're done testing in the motorsport section. thanks,

 

I started to think on something like this two days ago. Almost lost my sleep lol

I thought about an electrical transfer pump that would send the oil from the pump to a external reservoir. This reservoir would have two ports on the top, one inlet and one outlet to drain back to the pan.

On the bottom it should have another outlet to drain back to the pan, too.

The pan should be modified with a shroud welded around pickup area and a with a welded pipe to the outter wall of the oil pan. This would be the inlet from the external reservoir.

The reservoir bottom outlet should have a valve to be closed right after track runs. This way the pump would fill it and the oil level on the pan would be like stock.

Seems feasible?

 

I will present it at the moment I have the first cosmetically pleasing prototype (which will be in about 2 weeks).. dont want to show rough prototypes, as people like nice pics.. hah..

It will be running a 0.36 litre/sec electric pump, which should be OK considering the oil pump flow and the fact that the sump has some extra capacity.. like AMS/racefab. Baffling is totally different and it has additional oil pickup on the gearbox side.

There is an option of an even larger pump but space/weight is always an issue... who knows maybe smaller one would be ok..

Electronics is being developed right now, to run it, in a form of a adjustable switch.

Testing will be done in march I hope. Everything is late because it all goes on my car and we are doing a couple of paralel developments, like this sump, EFR twin scroll T4 kit (7163 EFR in my application), internal fuel surge tank, and some suspension items. ...

In fact, there is already a transfer sump done by Pace, but it uses a external mechanical pump and is not AC compatible.. in that case it is better to run a dry sump..

In my development I concentrated on a system that is AC compatible, even went to the design of a custom oil pump block, but the moment you have to produce a new front cover it becomes really expensive..

 

the problem with your idea is that the pump would run constantly.. you do not want to rely on a external oil pump for your engine oiling..