928newb

All the belts and the water pump were replaced by the PO in 2004 by AZtech performance in Gilbert AZ. The car has been driven for less than 2k miles and then parked for 8+ years before I got my hands on it and began to fix it up.

Since I was given the receipts for everything the PO had done on it, I took it for granted that it was OK. Today, when I decided to take the air pump out of the equation and install the 21" belt, just for the sake of it, I cranked the engine to the 0 mark and checked the camshaft gear through the peep holes in the covers.

To my surprise, the timing marks were not to be seen. I have removed the passenger side cover and found that the timing mark is on the bottom, 180 degrees from where it should be....


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Mrmerlin

OK so spin the crank a few more times and the cams will then line up at TDC

NOTE the engine now is set at 180 degrees out of TDC

Dutch 928 fan

Check if it is really at TDC. Is the distributor arm pointing towards spark plug number one?
You may have to crank one more round since the TDC mark (OT=Oben Top) passes by every 180degr.

PorKen

Try rotating the crank one-more-time.


The cam bolts have been messed with, so I would check the timing with a PK32V'r.

BRB-83-911SC

Crank it around 1 more time to "0" and the cam marks should line up. The crank turns 2x for each cam revolution.

BRB-83-911SC

Looks like everyone's on it simultaneously

928newb

LOL - I guess that was a brain fart...

Kevin in Atlanta

Deleted.

John Speake

If the belt is 8 years old it should be changed, regardless of mileage ?

Mrmerlin

to make things easier remove the 2 top bolts on the fan shroud and then pull it clear,
this will give you much room to work

Gary Knox

To pull the fan shroud, you MAY need to take the upper radiator hose off the radiator so the shroud can be tilted back and pulled up. Of course, first drain some of the coolant to get the level down below that hose! Drain plug is on the bottom right corner of the radiator.

Gary-

Avar928

For every two revolutions of the crank, the cam gears turns once.

Imo000

I bet you'll never make this mistake again.

Adamant1971

I did the same recently so your not alone. I had my belt off and had a little freak out moment until it was confirmed that since my crank was at 45 it was all good.

And ya that's a mistake you only make once.

JBGold07

The belt appears to be riding the front lip of the passenger cam gear? Im guessing there is a fault somewhere, is this a common failure at the tensioner or water pump pulley? or even oil pump pulley? My 86.5 is exactly the same