The cover on my oil pump has been leaking since I got it back from the engine rebuild, but recently it got worse. The internet tells me it could be from a warped cover plate. Well, the only thing to do is get to it. Which means:
- Drain the oil
- Loosen the pulley
- Remove the AN fitting
- Remove the plate
- Clean the surface
- New gasket
- New plate
- Put the AN fitting back on
- Might as well change the oil filter
- Might as well clean the screen
- New oil
- Test
I took a minute to swap out the cover to a MST billet cover. It seemed burly. No magnetic drain plug, so I will swap that in next time.
I also replaced the screen, because the old one was a bit beat up.
Now on to the real problem.
The CB Full Flow Oil Pump Cover plate, which has been leaking, I think from the nuts or maybe where the pump mates to the case? I thought I could remove the cover without remove the pulley, but I had to loosen that up. First up, remove the AN fitting. I bought the fancy Jegs aluminum wrenches.
The pump had lots of RTV on it, which the Bentley and Muir manuals both say to just install it dry. I scraped it all off and put in a new gasket and the new cover. But I also swapped to new oil pump nuts from JBugs that were way more substantial than what was on there.
The other nuts used a washer and then a sealed nut, I think oil was coming out from the washer area.
I put on a new filter while at it, and I switched back to the Wix 51515r , r=racing, since that seems to be what everyone uses. And apparently I change my oil every 200 miles now.
No leaks after running to get my mail. We’ll see… I have a feeling the AN fitting might be leaking next.
Parts:
- CB Performance Oil Pump Cover https://www.cbperformance.com/product-p/ffopc.htm
- CB Performance Oil Pump Cover Gasket https://www.cbperformance.com/product-p/1802.htm
- JBugs Oil Pump Cover Nuts https://www.jbugs.com/product/111115161.html
- MST Sump Cover https://www.partsbymst.com/shop/engine-components-accessories/oil-sump-cover-plate/oil-sump-cover-plate/
- Wix 51515r filter https://www.wixfilters.com/en-sg/catalog/results/product.html/51515r_wix.html
- VR1 20W-50 https://shop.valvolineglobal.com/collections/vr1-racing-motor-oil
- MOA https://www.bgprod.com/catalog/engine/bg-advanced-formula-moa/