928ntslow

This is my first attempt at doing this myself. I have 3 cylinders around the car to do on an 85 and it just cost too much damn money to have someone else do it.

So I think I have it figured out. There are 5 sets/pairs of "tumblers" as I guess they would be called. I shifted a few around. The key is original to the car, but the ignition lock cylinder is not. Is the idea to get all of the tumblers to sit flush in the cylinder when the key is in? I am guessing that is how it works. After swapping tumblers about, there are still a couple/few that stick up. Do I just take a rat tail file and work on them until they sit flush?

Are all of the lock cylinders around the car set up like this?

JHowell37

Yes, you want all the tumblers to sit flush. I've never seen a lock like that but regardless you want them to sit flush. In your pic the second and third one from the bottom need to be changed. The rest look good.

AO

Keith-

There is a tumbler "kit" with replacement tumblers that a few Rlisters have out there. I don't recall who. If you cannot get them to sit flush by re-arranging/replacing a file will work. You'll need to work the file pretty good and get it exact. I did this for my hatch lock and while it looked flush to my eye, when I tried it int he hatch witht he key, it would bind., So there may be a few trial fits needed, but you're on the right path.

V-Fib

Forums Main Page 928 DIY's
https://rennlist.com/forums/diy-928/202694-how-to-re-key-your-928-fuel-cap-doors-etc.html

ROG100

Hi Anthony,
Where did you get the lock kit from - any part number or supplier details please.
Thanks,
Roger

Roger@928sRus.com

V-Fib

I bought it from another Rennlister, then passed it along to another. Hopefully they will chime in if they want to pass it along again......

Mike Frye

One more tip: I had a set that was like Andrew described, the tumbler looked flush, but inside the lock cylinder, it has to be perfectly smooth or it will catch. I used 220 grit wet or dry once it was close to get it perfect, now it's nice and smooth.

chrly924s

I just got thru doing mine. I had new keys made and they worked in everything but the doors. Turns out the alarm lock switch is 'added' on to the end of the door locks and this was not cooperating. I had my keys cut to code by the guy in Australia. This gave me new keys for old locks and all the tumblers had to be filed down.

borland

Looks like the key was improperly made. Try another key.

928ntslow

Cool...I did this today without any issues. It was pretty easy to figure out. I wish I saw these posts before I did the work...not that it would have made a difference though.

I had to re-key an ignition lock I got with a steering column tube. My 85 was a vandalized vehicle and they really did a number on the column. re-keyed the lock, pulled the column, swapped out the tubes and intermediate shaft from tube to tube, stuck it all back in the car and its ready to rock! This was the one thing that stopped the car from being drivable when I bought it....at least as far as i know.

Anyhoo...I now have to do the hatch lock and the passenger door lock.

Thanks fellers!

JHowell37

I'm sure there are several of us who have old broken locks laying around. We could probably put forth a collaborative effort and send in all of our old tumblers and make a kit to circulate around for a nominal fee, (and of course a hefty a security deposit.) I know I've got about 20-30 Porsche tumblers in my toolbox right now.

Landseer

I'd pay to borrow the kit.

Am now wondering could there be any crossover with 944 tumblers? My son's 85 944 keys have a lot of similarities to the 928.

On that topic, I wonder if the back hatch lockset in particular has similarities. Gotta look.

JHowell37

The hatch and gas cap locks use the same tumblers as the doors and ignition. As for the similarity between the 944 and 928 tumblers I don't know. But it seems like it's worth investigating.

Jfrahm

I've never had a 928 earlier than 86 but all the 928 keys I have seen are nothing like 944/968 keys. The 928 'High Security' keys have the flat plate tumblers with numbers stamped on them. The 928 key is 2x as thick as a 944 key and has cuts on the four corners of the key blank rather than on the top and bottom, if you know what I mean.

Maybe if you figure out what number tumblers you need someone who has spares can mail them to you.

-Joel.

Hilton

A quick bit of digging and the photos Anthony posted of the re-key kit show its for 928s and 911s.

Searches via google turned up some questions about it on Pelican in the 911 forum, and apparently its NLA.

My drivers door lock jammed after gunk stuck the alarm part at 90 degrees to the rest of the barrel, so I took it apart a few months back for a clean including removal of the tumblers.

From what I saw, they're made of brass and then nickel plated - a couple of mine were flaking slightly. It shouldn't be too expensive to have a bunch metal-stamped and electroplated.. most of the cost would be in making the dies.