|
|
|
|
| Author |
|
|
Registered
Join Date: Dec 2001
Location: albumexinewquerqueco
Posts: 49
|
912 valve clearances
Hello all,
Well i bought the 912 from my previous post. It ended up being a '69, 89k original miles, repaint 7 years ago by bmw dealer, matched factory paint, absolutly NO rust, little bit of bondo. Garaged and parked since repaint. $1500..... (woooo -- hoooo) so we just trailered it home, (so as to get it cheaper in case it did actually fire right up) and fired it up. Timing was way off so we adjusted it, it still seems to have a problem. I'm not sure what carbs it has as of now but it looks like the #4 throttle body is spewing gas up into the aircleaner instead of down, leading me to belive that its a valve adjustment problem. Does this seem right to you guys? If so, what are the clearances for these valves. Even if this is not the culprit i need to check them anyway. And last but not least, does anyone know where i can get a repair manual for this thing. thanks in advance. |
||
12-10-2001, 10:49 AM
|
|
|
Registered
Join Date: Sep 2001
Location: Benicia, CA
Posts: 64
|
Hello,
Before you start it again, pull off the valve covers and check your valve train. When i bought mine, one of the valve keepers failed. This can send your valve right into the piston! I had the same symptoms as you. When it ran, the #3 cyclinder wouldn't fire and the gas came back out the carb! Intake valves should be set at .004in exhaust at .006in I use the Porsche 912 Handbook! Its ok, I haven't read any others, So i can't recomend one over another. You can order most through pelican parts. Good luck mike |
||
|
12-10-2001, 12:25 PM
|
|
|
Registered
|
Most of my manuals and the sticker on the inside of the engine compartment state - .006 for both the exhaust & intake.
|
||
|
12-11-2001, 07:42 PM
|
|
|
Registered
Join Date: Sep 2001
Location: Benicia, CA
Posts: 64
|
stckinaz,
Did you ever find out what your carb problem was?? I just put mine back together and it is doing the same thing except on the passenger side. Was it the valve adjustments? What did you adjust them to? .006 or .004 and .006?? Mike |
||
|
12-17-2001, 09:52 PM
|
|
|
Registered
Join Date: Dec 2001
Location: albumexinewquerqueco
Posts: 49
|
Yeah it was the clearances. The #3 valves were waaaaaaaay out of spec. dialed them in to .004 intake and .006 exhaust and it cured the problem.
|
||
|
12-18-2001, 06:14 AM
|
|
|
Registered
Join Date: Sep 2001
Location: Benicia, CA
Posts: 64
|
Ok cool. I will double check mine. Thanks
|
||
|
12-18-2001, 10:09 AM
|
|
|
1969 Porsche coupe stock 
