924Board.org

rockola · Joined: 22 Sep 2003 Posts: 20 Location: Espoo, Finland

Had to take out the thermostat housing on my 924, put everything back together, now car won't start because timing belt was not put back correctly

From the Haynes manual, page 31: "..., turn the engine via the center bolt of the oil pump so that the notch on the V-belt pulley aligns with the pointer on the oil pump." As far as I can tell there is no notch on the V-belt pulley, what's it supposed to look like?

"Align the pointer on the camshaft cover with the dot on the timing belt pulley." There are two red dots and a white dot on the timing belt pulley, it's the white one, right? Without the timing belt on I get only 4 different positions on the cam, if I try to leave it in between it slips to one of these 4 as soon as I touch it with something (like the belt). Is there a trick to get the dot to align?
_________________
1984 indischrot 924

Paul · Posted: Mon Sep 22, 2003 1:21 am Post subject:

I have never worked on a 84 NA (not availalbe in the US), but assuming it is the Audi 2 liter:

You can also use the timing marks below the ignition coil (there's a window in the bell housing).

RobE · Joined: 03 Nov 2002 Posts: 96 Location: Honolulu HI

I just fought with this very thing for two days, the notch is on the inner v-belt pully on the oil pump. On my '79 the notch was covered by a bunch of road grime, which caused me to use a paint mark on the outer pulley. low and behold I was 180 degrees out of time. The notch on my car is lined up with the 3rd hole on the outer pulley. I think those are the timing marks. Good luck as the notch is very small.
_________________
Rob E.
Sold '79 White 924 NA
Very sadly missed!! On the lookout for a new baby.

CMXXXI · Joined: 05 Nov 2002 Posts: 1939 Location: Vicksburg, MS

I'm a firm believer in using the flywheel mark instead of the notch in the mainshaft pulley. Provided your flywheel is installed correctly (there have been reports on the Board of improperly installed flywheels), it will be way more accurate than the notch on the pulley. As far as getting the belt on without moving the camshaft, you may find it useful to "back off" the camshaft rotation and put the belt on with some slack. Once on the pulleys, rotate it to take up the slack and see if it aligns. If not, "back it off" again, move by one tooth and try again until everything aligns when things are taught. Then tighten to spec using the tensioner pulley.
_________________
'79 Eurospec 931

augidog · Joined: 03 Mar 2003 Posts: 1360 Location: New Jersey

Flashback.

rockola · Joined: 22 Sep 2003 Posts: 20 Location: Espoo, Finland

Thanks for the tips everybody, I finally figured out the correct orientation. Alas, the car isn't running yet. I tried to start it, and noticed that the battery must have discharged. The starter would turn only slowly and then seize. It's now charging, I'll try again in a short while, but... I tried to turn the engine from the oil pump bolt, and noticed that it turns very unevenly; some parts of the rotation turn very easily, but there are places where it requires a lot more force. So, it's no wonder the starter seized with low charge, there simply wasn't enough power in the battery to get over these sticking places. I'm almost afraid to ask if anyone has an idea what's wrong...
_________________
1984 indischrot 924

Lizard · Posted: Tue Sep 23, 2003 2:27 am Post subject:

for a 4 banger that is normal to have a few freer spots, I know mine does, and it runs great
_________________
3 928s,

rockola · Joined: 22 Sep 2003 Posts: 20 Location: Espoo, Finland

Thanks for the reassuring words, did I mention this is the first car I ever bought, at the ripe age of 34, last April? So bear with me and my silly questions...

_________________
1984 indischrot 924

Lizard · Posted: Tue Sep 23, 2003 3:15 am Post subject:

dont worry about it, I had my first car at 16 given to me and I bought my first p-car at the age of 17, and now have my 928 at the age of 19
and I started out with some pretty stupid questions too
_________________
3 928s,

1982Porsche924 · Joined: 14 Nov 2002 Posts: 679 Location: Cupertino, CA

About to get my 4th porsche and I'm still 16

_________________
1979 Porsche 924 "S"
Engine: Euro pistons, Light Flywheel, Weber TB, Bursch Header, Cam Wheel
Suspension: Front coil-overs, adj sways, Solid bush. Thicker tors. bars, 5-bolt, BBS rims
Body: Fiberglass widebody kit, 931 Nose