oil pump

[madseacow]

engines out, dropped the old beat up oil pan and the sump filter is banged in a bit and has little chunks or flakes or dirt or something on the screen. don't want rod knock. but I don't want to do things I dont' have to. so should I replace it or what? I'd replace it without thinking if it wasn't so damn expensive.

 

[Shawndude]

Why not check it to the TSRM specs?

http://www.cygnusx1.net/supra/library/TSRM/lu/LU_10.html

 

[ToyoHabu]

I have talked to several mechanics. They have told me that toyota oil pump falures are almost unheard of. buuutt! Oil pumps arent that expensive and how much does peace of mind cost thesedays anyhow? If you dont replace Oil pump clean throughly and pack with grease , this primes the pump. The screen being dented shouldn't be a problem as long as it is cleared of debree and can still function as a screen. Good luck :drink1:

 

[QWIKSTRIKE]

new oil pump off ebay 130.00. Why worry when you can be worry free. Don't forget you don't want to do this twice. If you had to do it 2x it will cost time and money.
Don't forget to shim the relief valve. Also NEVER put rods in withou resizeing them to 0 stock tolerances. Why trust they are within tolerance replies when the cost is 15.00 per rod, and the oil system will be safe. See my post on how to avoid and minimize rod knock!

 

[Shawndude]

I don't know if buying an oil pump off ebay would really give one a piece of mind. New parts can also be defective, as no manufacturing process is perfect, not even Toyota.

Why not just check the condition of the current pump, so you know if it's good or not. It's not rocket science, just two dumb gears in a cavity pushing oily goop around.

 

[TONY!]

Yep, as I see it too, Shawndude.

...I am going the 'keep it' route, as far as the oil pump goes. I mic'd and measured all clearances - they are perfect after 143Kms - so why change it.
DeanMarcum (a member of other forums) once said that he mic'd brand new pumps that did not meet specs. If there is no wear and the specs are 'on the money', why change it?
Keep in mind:
1) The oil pump always has oil it, unlike the cams & cam saddles (when you first start up) so wearing it out is harder than other components.
2) The oil pump has little force acting against it, unlike other parts such as cams within their cam saddles, because each valve spring exerts 35lbs – times two valves springs at a time (70lbs), times six lobes per revolution.

I would definitely check out the oil pump as the TSRM states, and not just assume it is good. There are a bunch of things to check for also....

As an amendment to that post, can you imagine the force that is exerted on the crank compared to the oil pump, yet my 143kmi crank was perfect in all specs, and compared to the forces on the crank, the oil pump does not see the same force acted on it.

I am all for the "inspect and replace as necessary" method.

Just some conclusions I made for myself,
TM