My $100 1983 944 Farm Find Mud Rescue Resurrection Thread
10-29-2018, 03:00 PM
#121
Racer
Good for you bringing it back to life.My experience with the OPRV was high pressure when the valve stuck. Porsche redesigned the thing several times, my guess is that the valve has always been a source of pain. You can rebuild it when you do the oil heat exchanger.
10-30-2018, 01:06 AM
#122
Advanced
Thread Starter
My more concerning issue is the temperature gauge is always flickering. Constantly. It will never hold a steady position unless the car is off and the key out. Sometimes it flickers at the bottom end of the scale, sometimes at the top, sometimes all over. Does anyone have a wiring diagram so I can trace it? I have one mystery frayed/eaten brown wire on the driver’s side cowl that might be it, so the flickering could be the input floating (if it works like digital microprocessors I’m used to), but I have no idea.
10-30-2018, 06:46 AM
#123
Rennlist Member
If you decide to do the oil/water cooler thing, be sure to get the right OPRV tool for the re-alignment. there are different ones for the early/late cars..glad to see that it's running and driving! Gives me some hope about mine! Hoping to re-install my gas tank this week.
10-30-2018, 09:40 PM
#124
Originally Posted by Trekintosh
Oil pressure is a bit low as well, reads about 1.5 bar at 900rpm idle. For now I’ve raised the idle to 1050rpm which keeps it at just a hair under 2 bar. Might be the crank pully not being tight enough, or the relief valve according to clark’s Garage. [/left]
10-31-2018, 07:47 AM
#125
Rennlist Member
What oil are you using (sorry if it is mentioned earlier in the thread)? Those are pressures I had running 30W oil... when I put in the recommended 50W the pressure improved markedly, especially at idle.
BTW... you can wash the car... it won't melt
BTW... you can wash the car... it won't melt
10-31-2018, 08:03 PM
#128
Advanced
Thread Starter
I used 10w40 I believe, as it gets rather cold here in the winter.
So I took it in to get registered. $110, yay!
I took it in to get smogged. Total failure, and marked the car a Gross Polluter. Boo.
Legal limit for hydrocarbons is 120ppm. I scored 343ppm. Legal limit for CO % is 1.5%. I got 7.22%!
Also the tach is way off on the dash. I thought I had it set to a 1050rpm idle, but it was actually 1400rpm. My mechanic set it to an actual 1050.
My mechanic suggested the AFM, O2 sensor, or throttle position sensor, so I'm going to check ALL of those now. Does anyone have advice on the tach?
P.S. I hate living in commiefornia where an '83 has to get smogged.
So I took it in to get registered. $110, yay!
I took it in to get smogged. Total failure, and marked the car a Gross Polluter. Boo.
Legal limit for hydrocarbons is 120ppm. I scored 343ppm. Legal limit for CO % is 1.5%. I got 7.22%!
Also the tach is way off on the dash. I thought I had it set to a 1050rpm idle, but it was actually 1400rpm. My mechanic set it to an actual 1050.
My mechanic suggested the AFM, O2 sensor, or throttle position sensor, so I'm going to check ALL of those now. Does anyone have advice on the tach?
P.S. I hate living in commiefornia where an '83 has to get smogged.
10-31-2018, 10:36 PM
#130
Awesome man! These poor cars got so neglected and I'm happy to see another one revived. I felt like that with our blue one...but two years later I still haven't had time to finish the inside and make it street legal yet. Next year is my deadline.
11-05-2018, 02:46 AM
#131
Don't sweat the oil pressure. My 968 has always shown 1.5 at idle and I've put on 120k miles since bought her 15 years ago with no worries. My '89 944 that I had before this one was at 174k when I sold her and 51k when I bought and she never had more than 1.5 at idle the whole time I owned her and I used to track that one. Either the gauge reads low, or the car is designed so well that it doesn't matter. My oil is M1 15W-50 on the 944/968.
cheers,
c
cheers,
c