928 data

[machintek]

I found a 1982 928 with 154,000 miles. The asking price is $2,900.00 but it has a miss on one cylinder and the dash has a crack. The sets and body are in great shape. I figure it is worth half that. I plan on doing a compression test before I think of the purchase. What are the chances this is a valve? Is a dash cover easy to find? Thanks. A new adventure to wander here from the 911 forum!

George Wroclawski

[Joe Ricard]

I am hoping that eventually I have the last 928 on earth so that it will be worth a fortune.
Lots of these beaters around and if you think your 911 has lots of replaceable parts you ain't seen nothing yet.
I think it is a darn shame to let one of these cars get into such disrepair. I met a guy last week that had an 80 that I wouldn't have given a plugged nickle for.

[Joe Ricard]

By the way I am the proud owner of #347 A 1978 silver 928 that admittedly needs a paint job. This project is about to start this summer. I have had the car for 11 years and someone will have to use the jaws of life to get me to part with it.

[Roland Kunz]

Hello

The cahnces for a valve are low. It is mostly a simple ignition wire or a CIS/EFI relatet problem but people driving with that "little" problem longer start a other problem. Also this shows that other ( lack of ) maintaince relatet problems can show up.

have a eye on the spark plug and a leak down would show more.

Renewing the dash is time intensive but not a big problem.

928 Value is something from the market. Just look around if you can shop a other comperable car in the marked. OK old Camaros might be chaeaper and simpler to fix. But realy comparable Camaros are Z28 or IROC Z´s.

Grüsse

[machintek]

Thanks guys for reading this. I did buy it for $2,750.00 which I thought is fair. Besides, I believe he had that much in it and would not come down. I drove it home and it ran well when off idle. A suprising amount of torque at low revs and high gear. I have posted questions about what I have found so far which is not major. I HATE body work but am not bothered by mecahnical or electrical work. My profession is fixing CNC milling machines and lathes. This is to replace my son's and I project 914 with just too much cancer. The major problems (see other posts) are:

Miss at idle believe to be vacuum leak related.
No brake boost, no MPG gauge, believe to be related to above.
Ignition cut out at 3,800 RPM possibly same cause.
Hole in middle section of exhaust canister.
A lot of crispy wires in the drivers door.
Will need to replace weak synchros in trans.
Trying to find cheap documentation (service stuff).

I promise to ask more questions, and share answers.

George
83 911SC Cab/Euro
82 928 in labor

[Wayne 962]

We can get you most of the parts that you are looking for, however, a whole bunch of them are slowly becoming NLA (no longer available) directly from Porsche. This is bad news for the survival of the 928s, as it is difficult to replace items if you have to go looking for good used ones.

What did the compression check yield?

-Wayne

[Iggy]

How can one tell if the car is not running on all 8 cylinders? I hear of this problem too often not to know. Thanks in advance.

[machintek]

I was considering pulling one plug wire at a time to see if the idle dropped. This would tell me if that cylinder was running correctly or not (if pulling the wire had no effect). If two adjacent cylinders had no effect then I would suspect that the cylinder head gasket was blown between them. I saw this too often with my MGB. I finally found a competition head gasket that solved this. I guess running Webers and such did not help the situation either. I also had a situation on a neighbor's Honda civic where when I pulled two of the four ignition wires (one at a time), the idle went UP. Turned out that there was a carbon trace inside the distributor cap causing 2 cylinders to fire at the same time and of course one of these was not at the correct position and fighting the correct running of the engine. Still planning on doing that compression test.

George
83 911SC Cab/Euro
82 928S
95 XJ6
70 914 well. most of it