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Re: [turbobike] SHURflo pumps

Dave Morrill (david.p.morrill@fairchildsemi.com)
Mon, 26 Apr 1999 12:55:06 -0400

I'm doing this, in the limited experience I've had, you will still need check
valves, unless you make the oil pan really large.  My mini oil pan is about
20 cubic inches and is not large enough to catch all the oil that gravity
feeds into the turbo after shutdown, and I am using a 5psi cracking pressure
check valve to try and stop this, I know other guys (Rick) are using this
check valve too.

It also kills ground clearance in my setup, so I'm still looking for a way to
get rid of it.  The fewer pieces the better.

I've tried 2 shurflo pumps, I'm using the smaller 100 series right now, and
it seems to be doing the job.  The 8000 series is much larger, and draws 4A
vs 2A for the smaller 100 series (measured in actual operation, the 8000 is
actually rated at 7A I think).  One drawback on the 100 series is it seems to
be self priming only to 6" or so, so it needs to be mounted down low.  A
drawback on the 8000 is it doesn't appear to be watertight, so you need to
mount it carefully.  I've seen this mounted in the tailight assembly on a ZX
in a turbo book I've read.

Good luck, let me know what you figure out.


Tim Drew wrote:

> Hi,
> There has been some talk on the list about electric pumps.
> I have a SHURflo 8000 series pump which I'm going to use to scavenge the
> oil from the turbo on my new GSX-R11 blow-through system. I know others
> get away with it but personally I don't like the idea of returning very
> hot, highly aerated oil directly into the engine oil pump. What I intend
> to do is let the turbo drain into a small vented oil tank mounted at low
> level, then use the SHURflo pump to scavenge the oil from this tank to the
> engine. This should preclude the need to use check valves as the oil tank
> will just catch any oil that drains through the turbo after shut down.
> Has anyone on the list used one of these pumps on similar system for an
> extended period of time, and if so did you experience any reliability
> problems? My bike will be doing quite high street mileage with the odd
> drag meet thrown in.
> Regards
> Tim Drew
> --
> mailto:timdrew@cix.co.uk