Dual Remote Bypass & Prelube Pump
11-09-2006, 01:59 AM
#3
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Very nice!Have you opend up an old by-pass filter to see how much it caught?
IMO using a quality syn oil as thin as possible when cold (0W is the lowest available AFAIK) while maintaining viscosity (in the case of my F20C2 SAE 30) and lubrication properties at operating temp (API-SL/SM or ACEA A5/B5) is a first and a very important step in engine maintenance.
Your setup, with the pre-lube at (or rather before) startup, is something to wish for, especially with the high revs at a cold start.
11-09-2006, 08:58 AM
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Nice work. I have been looking at the Accusump by Canton or Moroso. The accusump will do the same pre-lube function, plus it will instantly restore oil pressure when the oil pump momentarily cavitates any time the engine is running.
How are you controlling the pump? Manual ON/OFF switch? Ignition key to activate it and a delay timer or RPM switch to deactivate?
I would consider the following the best control plan. This is how I have done lube oil systems on large industrial skids with recip engines, gas and steam turbines, etc.-powered prime movers into the thousands of HP. They normally have an engine driven oil pump, augmented by an emergency electric pump(s).
Make the electric pump automatically run when key is moved to ON, then automatically turn OFF once you see enough oil pressure. You wouldn't want to use the stock low oil pressure switch, since it trips at too low a pressure. But you can get another pressure switch, with an adjustable setpoint even, to deactivate the electric pump. Just make sure that the contacts on the switch are rated to handle the amp draw of the electric motor, or else you will need to add an interposing relay to isolate the controls circuit from the pump motor. I would add a light in the cockpit to indicate when the electric pump is running.
How are you controlling the pump? Manual ON/OFF switch? Ignition key to activate it and a delay timer or RPM switch to deactivate?
I would consider the following the best control plan. This is how I have done lube oil systems on large industrial skids with recip engines, gas and steam turbines, etc.-powered prime movers into the thousands of HP. They normally have an engine driven oil pump, augmented by an emergency electric pump(s).
Make the electric pump automatically run when key is moved to ON, then automatically turn OFF once you see enough oil pressure. You wouldn't want to use the stock low oil pressure switch, since it trips at too low a pressure. But you can get another pressure switch, with an adjustable setpoint even, to deactivate the electric pump. Just make sure that the contacts on the switch are rated to handle the amp draw of the electric motor, or else you will need to add an interposing relay to isolate the controls circuit from the pump motor. I would add a light in the cockpit to indicate when the electric pump is running.
11-09-2006, 10:47 AM
#6
Thread Starter
Thanks for the compliments! 
SpitfireS: I have thought about dissecting the bypass filter, however I doubt that I'd find anything. When I feel the bypass filter after I've driven it a while, it is always hot. That tells me that oil is flowing through it. I have pulled apart TP media from another bypass system before, and I couldn't see anything - just a bunch of black, oil-soaked toilet paper.
Snakeeater: I'm controlling the pump with a toggle switch connected to a relay under the hood. I have purchased an interval timer to hook up to the ignition switch, however I haven't had the time to install it. But because the toggle switch works so well, I may never install it.
That's the way I have it set up - with a relay, cockpit LED and high/low pressure switches built into the pump. But because the pump isn't rated for continuous use at high temps (IIRC, it's rated at 170F), I don't want to push my luck and just leave the switch on.
The Accusump and AMS-Oiler are great systems, however you can't prelube your system when you change your oil - a time when you need prelube the most - unless you leave the dirty oil in the unit.
SpitfireS: I have thought about dissecting the bypass filter, however I doubt that I'd find anything. When I feel the bypass filter after I've driven it a while, it is always hot. That tells me that oil is flowing through it. I have pulled apart TP media from another bypass system before, and I couldn't see anything - just a bunch of black, oil-soaked toilet paper.
Snakeeater: I'm controlling the pump with a toggle switch connected to a relay under the hood. I have purchased an interval timer to hook up to the ignition switch, however I haven't had the time to install it. But because the toggle switch works so well, I may never install it.
Make the electric pump automatically run when key is moved to ON, then automatically turn OFF once you see enough oil pressure. You wouldn't want to use the stock low oil pressure switch, since it trips at too low a pressure. But you can get another pressure switch, with an adjustable setpoint even, to deactivate the electric pump. Just make sure that the contacts on the switch are rated to handle the amp draw of the electric motor, or else you will need to add an interposing relay to isolate the controls circuit from the pump motor. I would add a light in the cockpit to indicate when the electric pump is running
The Accusump and AMS-Oiler are great systems, however you can't prelube your system when you change your oil - a time when you need prelube the most - unless you leave the dirty oil in the unit.
11-09-2006, 04:44 PM
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Originally Posted by slalom44,Nov 9 2006, 01:47 PM
Snakeeater: I'm controlling the pump with a toggle switch connected to a relay under the hood. I have purchased an interval timer to hook up to the ignition switch, however I haven't had the time to install it. But because the toggle switch works so well, I may never install it.
That's the way I have it set up - with a relay, cockpit LED and high/low pressure switches built into the pump. But because the pump isn't rated for continuous use at high temps (IIRC, it's rated at 170F), I don't want to push my luck and just leave the switch on.
That's the way I have it set up - with a relay, cockpit LED and high/low pressure switches built into the pump. But because the pump isn't rated for continuous use at high temps (IIRC, it's rated at 170F), I don't want to push my luck and just leave the switch on.
+12VDC ----------- H HOA H----------------------------------------- LIGHT ---
ALWAYS HOT SWITCH | |
-----A A------------PRESSURE-----------------RELAY----
| SWITCH COIL |
12VDC -------- |
IGN KEY | ON |
|
-12VDC ----------------------------------------------------------------------------------
GROUND |
! NO !
+12VDC FUSE------------------ RELAY ------------------------------------- MOTOR ---
>MOTOR FLA CONTACT
Damn line text editor. Feels like 1980. F*(&^ d up my purty picture.
