Re: Restarting Unused 5I Engine

[The Murphy-Fahlgren Family <efhome@master.adams.com>]

OorQue@aol.com wrote:
> 
> > The accusump uses your system pump to pressurize the accumulator. Catch 22.
> 
> True but only to a point.  The Accusump reservoir is divided into two
> separate pressurized chambers -- one for air and the other for oil -- by a
> sliding piston.  By sliding one way or the other, the piston changes the

Thanks, Jeff.  Again I experience "read _all_ your mail before you respond
syndrome."  This is exactly what I was thinking.

> valve is opened and the pressurized oil is released into the engine bringing
> it up operating pressure (or very nearly so) before the engine is fired up.

A question arises from this: Does the ECU pay attention to the low (4.0 psi) oil
pressure switch and not allow the engine to start until it is closed?  Is this
why these motors crank so long before starting?

> Of course, it's not nearly as elegant a solution as a proper dry-sump system
> -- done correctly, they not only keep the bearings nicely oiled but can add a
> few horsepower to the engine's output as well --  but on anything other than
> an all-out racecar, they work as well for a fraction of the cost and
> installation headaches.

My big attraction to a dry sump system would be that they maintain pressure
during hard acceleration and cornering (I will occasionally get a low pressure
warning when doing a hard straight line accel from a light).  The reduced
windage and reduction in oil foaming is always attractive when turning high revs.

> That said, I've successfully pressurized the oil in an engine before starting
> by using a setup similar to a pressure bleeder for the brakes.  In this case,
> I took a two-gallon plastic gas can, drilled a hole near the cap for a tire

Oh, I really like this, you can use it on anything with an oil cooler.
Hmm, now that I think about it, pull off the oil _filter_ and pump it up
the engine supply, so it will work easily on any engine...  You could even
put the supply can on a hot plate to reduce the viscosity and make it pump
in easier/better.

Eric Fahlgren
-- 
The Murphy-Fahlgren Family            Try to take over the world.
efhome@adams.com                                  Canton, MI, USA