Engine pre and post oiler

[junkman42]

Has anyone on the board used an engine pre-post oiler and if so what brand etc.  John

[Tim Strommen]

I am using a "Turbosafe" pre/post oiler only for the turbocharger.  Thought about putting a general engine pre-oiler in for the prime mover, but I have more important things to do (talked to Don Fairchild last year, and got an idea how I want to rebuild the engine this summer... $$ $$).

I'm not paid to endorse this product/company - and don't ask me what I paid for it (I'm 29 but these days I have the memory of a 90-year old... ).

Find it here: www.dieselproducts.com

It's pretty simple, a spring-loaded presure accumulator, with a release solenoid for starting.  You put a "T" fitting in the oil line to the turbo housing with a check valve on the source side (to the engine oil line).  When the engine oil gets to pressure (over a few PSI), the plunger gets pushed in.  When the engine is shut down and the oil pressure drops, the plunger is allowed to go back out pushing oil into the turbo bearings until it runs into the solenoid tab (about half of the volume of the chamber).  The solenoid is best hooked up to the starter control, so that when you give the initial crank, the solenoid tab pulls out of the way allowing the plunger to continue pushing the remaining volume of oil into the turbo bearings (the check valve ensures that the oil doesn't run back into the engine...).

The "Instalube" pre-oiler they make for engines doesn't have the post-lube function (i.e. the plunger is charged by engine pressure while running, but isn't allowed to move back out at all until the solenoid is powered - at which time it can push the entire volume of the chamber into the engine).

It's a neat idea.

-Tim

[luvrbus]

John, a pre lube on a 2 stroke to me is a waste of money they always have oil in the oil pump and galley it is held there by the 2 valves on the block inside the pan and will pump oil to turbo when the starter is enganged trying to start the engine                           good luck

[PP]

A few years back (quite a few) I put a pre-oiler in my chevy farm truck. Within 2000 miles (hard use and lots of hay hauling) it started burning oil. I swear it was the pre-oiler but couldn't prove it. My $.0002 worth, Will
I should add-it was a chev diesel and right after the install it started smoking on startup which it never did before.