924Board.org

[jvandyke]

Backstory: 15 year old son and i bought project '87 924s, engine was seized, got it freed up, after much effort got it running and driving, not great but okay, then we had a fuel leak and a fire.
Pulled engine, new harness, many new bits, discovered car has an '84 engine.

Restarted the last couple days and it fires right up, lots of lifter noise (research says that's not too uncommon on an engine that hasn't been run in a while).
oil pressure gauge was pegged at 5 so I thought I had reversed the wires, so I swapped 'em.

We ran it for about 4 minutes. Idle got a bit erratic, temp gauge barely moved but the cam box seemed really really warm, oil pressure gauge was still pegged at 5. Shut it down. Pulled oil filter, it was full of warm oil. Pulled a plug on the cam box and it was oily but not a ton. Decided to fire it up for a few seconds with the plug out. I can see oil in there but there wasn't a mist or a spray. I don't know if there should be.
Anyway, looking for advice. I don't want to trash the motor after all this effort. If it isn't already trashed.
I did not verify timing but I can't imagine there'd be a reason for that too have changed. We didn't tear into the engine at all.
Taking all ideas.
I'm going to verify timing but I don't know what to do next. I don't like running it with all this uncertainty.
_________________
87 924S project, '83 944 engine,
my son's first car.

[Paul]

These cars typically run at 5 bars of oil pressure, especially when cold.
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

[edredas]

Good Luck! These injectors can be really loud and a lot of people mistake them for lifter noise. If you have oil in your cam tower and there are no leaks, it might just be the injectors.

I hope that helps!
_________________
'84 944 -White, Brown interior
'84 944 -Red, Automatic
'86 944 -Garnet, Fully loaded, Koni suspension
'87 924S -Red, 300hp 951 swap
'87 924S -Red, Project Car
'88 924S -Red, Daily Driver

[KDJones2000]

Everything sounds normal to me.

Run it some more and the lifter noise should get better.
_________________
1987 924S SPEC car
Team Toofah Racing
1988 944 Turbo S

[jvandyke]

okay, that's reassuring, the cam box got really warm really fast though
Does anyone know which wire goes to which side of the oil pressure sensor? I get the same results either way, Clark's said it pegs out at 5 if it's wrong, I get that either way.

Is there an easy way to verify oil pressure? I'm nervous. I have a tester but no idea if there's a place to plumb it in. My faith in the OEM one isn't very strong.
_________________
87 924S project, '83 944 engine,
my son's first car.

[edredas]

The Blue/white wire is for the gauge and it goes to 'G' on the sender. The blue/black wire is for the oil light and it connects to the 'WK' post.

G and WK are stamped into the sender, the posts are different sizes and the wires have different terminals, so they should not be able to be swapped. The Blue and black wire for the light has a spade terminal.

I hope that helps!
_________________
'84 944 -White, Brown interior
'84 944 -Red, Automatic
'86 944 -Garnet, Fully loaded, Koni suspension
'87 924S -Red, 300hp 951 swap
'87 924S -Red, Project Car
'88 924S -Red, Daily Driver

[jvandyke]