oil pump gash

[Fehrion_sit]

i got my front case/ oil pump off today while doing my BSE kit and i found a small gash in the oil pump sprocket bore that im not sure would be warrant for a new case. i just wanted to get some expert opinions.

 

[My1GLaser]

I wouldn't be too concerned with that. Mine had a couple small gouges in the bore area and my side clearance was just barely in spec. It has been running for 4 years now at 8-9k and I have helical gears not straight ones like you. My oil pressure is great! A little too much for my Holset Get a magnetic oil drain plug!

 

[Fehrion_sit]

good to hear! do you know the side clearance spec for straight gears by chance? i wont have access to all data till monday and i was hoping to put it back together tomorrow!

 

[rw87tt]

My unexpert opinion is that if your oil pressure was ok before than it's probably ok to put it back. Some trash probably got in there and got caught in the oil filter. If they make a oil pump rebuild kit than I would use it. It appears that the bushing for that idler oil pump gear can be replaced. OEM oil pumps are not cheap.

 

[My1GLaser]

My FSM says .0031-.0055" for the drive gear & .0024-.0047" for the driven gear. Service limit is .0098" for both. It doesn't specify for straight or helical gears.

 

[andrewshowers]

If everything rotates in there good, and you dont feel or hear any hangups I say run it.

 

[Fehrion_sit]

Hey My1GLaser..... when reattaching the oil pump rear to the main case, should i use a sealer? how about the bolts, locitite? i have subi bond which would be applied in a 1-2mm layer and then put the case together. i did use an abbresive very lightly i was careful to only clean the surface not destory it.

 

[andrewshowers]

Thats a dry mating surface on the oil pump to front case. I would loctite every bolt on that housing, and also when you bolt the front cover back onto the engine make sure you torque them properly and loctite everything, expecially if you have the bs removed. Make sure you use a gasket on the front case though, and a new main seal while your at it.

 

[My1GLaser]

You don't use sealer. They are machined surfaces. Anything in there will change the side clearance as well. I used loc tite on mine. I don't have the FSM in front of me and I don't remember what it says about loc tite.

 

[Fehrion_sit]

red loctite on all the bolts? i was going to put a touch of rtv on the seals

 

[taylor hindman]

loctite blue and no need for any rtv

 

[My1GLaser]

I never used any RTV on the front case gasket either. A little copper spray would probably be fine...I do put a small amount of Ultra Grey RTV on the outside of all rotational seals before I press them into their respective housings.

 

[Fehrion_sit]

unrelated, should i port my oil filter housing, the forward balance shaft should still maintain pressure. someone told me to turn it to a specified time to defiantly block the oil ports? that doesn't sound right to me as the machined surface the bearing rides on is a full circle. thoughts ?