[i82much]

Do they get enough oil to the top end to make a difference in cam/lifter life? I am gradually learning to accept that my car will sometimes go months between startups. Trying to make a solid roller live on the street and thinking this might be a worthwhile upgrade.

[steve25]

A solid roller even on the street does not need this, and they do not do a heck of a lot in regards to re-priming the bearings unless the crank is also at least spinning at a cranking rate.
There main benefit is saving the bottom end should the main sourse of oil pressure go south and give you enought time to shut the motor down.
A Hobbs switch set for some 20 psi plumbed into the oil pressure line with a toggle type switch paralleled across that for engine start up useage is the way to go.

In drag race use you can run the oil level at a safe one QT low and pick up some power from lower windage in the crank case and still have a long living bottom end!

[Steve C.]

"Typically, an engine that has sat idle for even a short period of time will operate relatively dry upon starting before oil is able to fully lubricate the system. In fact, the automotive industry estimates that up to 50 percent of engine bearing wear occurs during the starting process. Synthetic motor oils minimize start-up wear by effectively clinging to the metal surfaces."

Source and further discussion regarding oil pre-charger:

http://www.kc-synthetic-oil.com/dry-engine-start.html


Engine Pre-Oilers End Dry Starts and Premature Engine Failure

http://www.americansyntheticoil.com/pre-oiler.html


"There is currently no engine oil thin enough to operate correctly at startup. They all cause excessive wear at startup."

Further info on the subject: http://www.bobistheoilguy.com/motor-oil-103/

( Not a recommendation, just information about pre oilers. However I agree about dry starts and personaly use synthetic oil to help )



.

[Tom Vaught]

Originally Posted by Steve C.

"Typically, an engine that has sat idle for even a short period of time will operate relatively dry upon starting before oil is able to fully lubricate the system. In fact, the automotive industry estimates that up to 50 percent of engine bearing wear occurs during the starting process. Synthetic motor oils minimize start-up wear by effectively clinging to the metal surfaces."

Source and further discussion regarding oil pre-charger:

http://www.kc-synthetic-oil.com/dry-engine-start.html


Engine Pre-Oilers End Dry Starts and Premature Engine Failure

http://www.americansyntheticoil.com/pre-oiler.html


"There is currently no engine oil thin enough to operate correctly at startup. They all cause excessive wear at startup."

Further info on the subject: http://www.bobistheoilguy.com/motor-oil-103/

( Not a recommendation, just information about pre oilers. However I agree about dry starts and personaly use synthetic oil to help ) .

From the second link: 160 cubic centimeters of oil is injected directly on the engine bearings and other wear sensitive surfaces upon turning of the key, giving instant protection to vital engine components.

ONE QUART OF OIL IS 946 CUBIC CENTIMETERS.

The smallest Accusump reservoir is a 2 quart volume or 1892 Cubic Centimeters of oil flushing thru your bearings pre lubing them before start-up. A 3 quart Accusump is even more or 2838 Cubic Centimeters of oil to the engine.

So what your rather have? A squirt gun shooting 160 Cubic Centimeters of oil on pre start-up of the engine or 2838 Cubic Centimeters of oil to the engine before it fires?
That's only 17 time more oil to the bearings, lifters, oil galleries, rocker arms, etc.

So buyer beware on some of these links.

Tom Vaught

[i82much]

I think it is worth a shot. Might try a 5w40 synthetic to help get oil up to the top end using the accumulator.