Scavenge pump location

[Tombola]

Hi all, where does everyone mount their scavenge pump? It's a proper gear unit and self priming  but quite big! 

[Gixer1460]

Any mechanical pump can be driven from any rotating shaft - I used the end of the crank. Bigger isn't necessarily better - they deal with small amounts of oil efficiently so are running 'dry' most of the time - my pump gears are maybe 6-10mm wide and 25mm diameter, enough for me.

[Reinhoud]

I built mine on the left side of the cranck case, I extended the drive shaft from the oil pump.

I used the pump gears from a stock oil pump, made the housing myself.

 

What gixxer1460 sys is probably the easiest way to do. I did built a pump like that too, but that was to feed the turbo, but that didn't work because off all that pressure I had leaks (this was more my own fault - it was in the experimental phase), but as a scavenge pump it should work.

Edited August 26, 2016 by Reinhoud

[Tombola]

No one uses a electric pump then? These small gear pumps where do you get them from? 

Are you using a very small hydraulic pump? 

[Gixer1460]

Plenty of people use electric pumps but they can't be described as geared and huge so I naturally assumed it was a mechanical one! I believe the mechanical parts like in mine come from 50cc / monkey bike engine oil pumps just built into a nice housing.

[Tombola]

I would call this huge for a bike! It doesn't matter as I do have another use for it but I must admit I did think it would be alot smaller 

[Reinhoud]

Also, you have to have a fuel pump running, and then an oil pump, can the alternator handle that?

[Tombola]

I would of thought so, though I haven't looked to see how many amps the alternator puts out. That oil pump wouldn't put out its FLC as it wouldn't be working that hard, I would of thought it would of been more the fuel pump as your restricting it down so much

Edited August 27, 2016 by Tombola

[Reinhoud]

I don't know much about electrics, I do know those alternators don't crank out much, not sure if they crank out enough to feed an extra fuel pump and scavenge pump.. I'm sure there is someone else who knows a lot more about that stuff as me.

[Captain Chaos]

I know that the Powerscreen (GSX1100F) generator cranks out more than other oilcooled ones. Not sure how much though.

Something to do with touring bikes having adjustable windowss and needing heated grips and other shit like that.

[Tombola]

It does look a large alternator, and it is a F so might be alright.

[Gixer1460]

From what I can find the GSXR / GSX-F alternators seem to be 22-25A output so stacking all the electrical draws together (ie worse case with everything on) gives std bikes a little surplus for battery charging. Add in additional electrical pumps (fuel and oil scavenge) @ 6A each, wideband lambda's EFI (if fitted) and the system soon runs into deficit with no real alternatives unfortunately. The 'windscreen washer' type pumps used for oil scavenge with 1A draw are obviously more economical electrically.

[MeanBean49]

I run a 230lph pump and a facet oil scavenge off a bandit 12 alternator with no problems at all. As do pretty much all bandit 12 turbo's

Bandits have a pretty large alternator and it powers next to nothing in normal use.

[Tombola]

I've been gathering bits for my tubby GSX, i take it your talking about the cheap Bosch alternative on ehay? How many amps do they pull at flc??

[luke2152]

Is it worth running the oil from the turbo through an oil cooler first to stop the pump getting too hot or are they pretty good at dealing with it (thinking an oil cooled engine must be seeing some high oil temps)

[MeanBean49]

Heats never been a problem with mine. Works fine

[Duckndive]

On ‎26‎/‎08‎/‎2016 at 9:45 PM, Tombola said:

I would call this huge for a bike! It doesn't matter as I do have another use for it but I must admit I did think it would be alot smaller 

Don't know what they cost but I,m sure with a bit of work the pump bit could be mounted on a cover and be engine driven...

 

[Gixer1460]

3 hours ago, Duckndive said:

Don't know what they cost but I,m sure with a bit of work the pump bit could be mounted on a cover and be engine driven...

 

Would work but total over kill as its rating is sufficient to turn the entire sump contents over nearly 4x a minute LOL!

[Duckndive]

4 hours ago, Gixer1460 said:

Would work but total over kill as its rating is sufficient to turn the entire sump contents over nearly 4x a minute LOL!

LoL Good Point dint look at the label..............

[Tombola]

What stock motor oil pumps are a good one to adapt? I

[Gixer1460]

On 8/26/2016 at 6:03 PM, Gixer1460 said:

Plenty of people use electric pumps but they can't be described as geared and huge so I naturally assumed it was a mechanical one! I believe the mechanical parts like in mine come from 50cc / monkey bike engine oil pumps just built into a nice housing.

This is mine - quite small but sufficient! That is an M10 x 50 screw that got modified to pick up on the pump drive and mate with the M8 cap screw holding the ign. rotor

[Tombola]

Where did you get it from chap? 

now why the chuff couldn't I find that with the search!? Cheers anyway I'll defo look into this as that electric pump now has another use.

Edited August 29, 2016 by Tombola

[Gixer1460]

Direct from NLR in the Land of Uncle Sam. Designed for a Hayabusa but easily adapted. 

[Tombola]

was it a email request as I did look earlier and couldn't see one on the website? I have a old Briggs engine in the yard, might not be hard to adapt.. Depends on how much the nlr one is vs how much time spent adapting one for lawnmower.

[Gammaboy]

Briggs are splash lubed aren't they?