View Single Post
Optimusglen Optimusglen is offline
Registered
 
Join Date: Dec 2013
Location: Minneapolis, MN
Posts: 202
Finished my 2.2T engine build - oil pump seal check? First Start butterflies.

Hi all, Over the last few years I've been rebuilding a 911/07 ('71 911T engine) to use in my '71 914. It's finally all together and I wanted to ping the collective to hear thoughts or opinions on something I wasn't quite expecting in preparation for the first start.

2.2T, Zenith 40tin , stock rebuild apart from oil bypass mod, updated oil pump, and headers.

I'll start at the beginning.


All was going great with the build, I purchased Wayne's book and was following the procedure. The case was done by Ollie's who did the oil bypass mod and supplied the new springs and kit etc.

I changed to a 4-rib oil pump and had it rebuilt by Henry at Supertech.

Engine all together, installed, everything done and I wanted to prime the motor with oil before the start. I pulled the spark plugs out and disconnected the fuel pump. The engine turns over nicely.

I don't have an idiot light, I took the spot for the idiot light sensor and replaced it with the oil pressure sensor (no spots for both, though I might get a dual contact sensor in the future to have the idiot light)

So, the engine turns over but I don't see the pressure gauge moving. Climbed under and didn't see any oil leaks. Checked and rechecked wiring, connections, and tested with a known good gauge. After four or five 30-second cranks, spaced by 2-5 minutes each to rest the starter, I call it quits and push the car back into the garage. At that time I notice an oil puddle.

Over the next few days I cranked it maybe a dozen more times as I tried other gauges, I was thinking I had an oil pressure sender or gauge problem.

The oil leak seemed to be coming from the intermediate shaft cap. I end up dropping the engine and pulling the cap, resurfacing, and reinstalling.


In the process of dropping the engine I drained the oil, this is where it kind of threw me for a loop. There was much more oil to come out of the sump than the line/tank.

At this point, it's all together again, but I'm wondering if there's some way to check the oil pump seals with the engine completely assembled? I know I can remove the oil hose fitting on one side and see inside one port, but I don't know if any of this is necessary given all the cranking I did.

I do get oil to the cam housing banjo fittings, so there's some pressure there. I believe that rules out using the wrong oil pressure relief pistons.

Any input or speculation is appreciated.

__________________
Instagram = glen.cordle for my Porsche artwork and 3D models.

Last edited by Optimusglen; 08-23-2021 at 10:45 AM..
Old 08-23-2021, 09:55 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)