LEADASS

I'm feeling a little dumb... I'm trying to find His very complete and informative description. I've used it previously but now I can't find it. Please help!! Thanks!

dr bob

Look here:

http://dwaynesgarage.norcal928.org/1...0Procedure.htm

LEADASS

Thanks so much!!!!! It's sad how much I can forget.

fbarnhill

It is a wonderful writeup. I use it every time just to ensure I don't miss something. I feel like I could do it in my sleep these days but that's just when you might miss something so I print it and check off the items one by one.... Thanks again to Dwane for the 1000th time for that excellent writeup.

LEADASS

I thnik he should get the Nobel Peace Prize!!!!

Randy V

Dwayne is the man!

dr bob

I can't remember half the stuff I've forgotten...


Good procedure documents are the saving grace for critical work. Sometimes a full guide with pictures and good narrative are needed, other times a simple check-list with things like torque values is enough. Dwayne's style is a great example of the first description. Hats-Off to Dwayne for this and the rest of the amazing collection of 928 documentation he generates and shares.

Zimoludek

Does anyone have something like that for 79 4.5, my timing is off by a lot after I picked it up from local mechanic that did my oil pan gasket change, they have no idea how to do timing in this car.

Wisconsin Joe

Try this one for a 16v:

https://rennlist.com/forums/928-foru...with-pics.html

dr bob

I'm a little concerned here. Servicing the oil pan gasket really has no relation to the timing belt. Or maybe the mechanic also did the timing belt? The good news is that you '79 is a not-interference engine so the only direct impact of a cam timing error is poor or no running.

The workshop manuals have a pretty good description of how to set the cam timing. Before you start tearing lots of stuff apart, remove the two upper cam belt covers so you can see the cam gears. Rotate the engine by the crankshaft nose bolt clockwise only, until the timing pointer is at the 0|T mark showing on the balancer. Know that putting the balancer on backwards is a too-common error; you should be able to read the numbers right-side-up, looking at the engine from the front. Anyway, there are notches in the cam drive gears that should line up with a mark on the backing plate. The cam drive ratio is 2:1, so if the marks are 180º out at the cam gear, you'll rotate the crankshaft 360º clockwise to bring the marks on the cam gears around to the top.

Ignition timing is directly related to cam timing. The procedure for setting ignition timing is a bit different from most other cars. It's adjusted at a certain engine speed but with the vacuum disconnected, so you are including the full available centrifugal advance but none of the load-related vacuum advance/retard. The workshop manual is your friend. If you don't have one, I recommend that you consider the CD set manual available from Roger at 928Srus. It has decent scans of all the manual pages, with a linked table of contents. It has a slew of accessory publications and documents that detail certain subsystems in the car, plus a selection of contributions gathered in one handy spot. There's a link in the new visitors thread at the top here that will get you a usable scanned copy of the manual pages. In my opinion the set from Roger is enough better to justify the cost.

and... Welcome to Rennlist!