| View previous topic :: View next topic |
| Author |
Message |
staticsan
Joined: 19 Jan 2009
Posts: 450
Location: Sydney, Australia
|
 Posted: Sat Apr 17, 2010 10:30 pm Post subject: Seat mount cross-members. |
 |
|
I notice a few recent threads about some (ahem) peoplep doing mad things like stripping their 924 to the shell, painting it and then putting everything back. Well, this qestion is aimed at everyone from that level down.
The seat mounts in my 924 need upgrading; the stock 6mm bolts are not enough for NSW rego. But the bigger problem is one of the front ones on the driver's side is actually broken. So I need to repair or replace the cross-members for the seat mounts.
What do people know about them? I haven't pulled everything up yet, but it looks like they're welded to the floorpan? Has anyone here gone in and rebuilt the seat mount and/or the cross-member? If so, what did you do?
Wade. |
|
| Back to top |
|
 |
Vince Ponz
Joined: 02 Nov 2002
Posts: 3581
Location: Florida
|
| Posted: Sat Apr 17, 2010 11:35 pm Post subject: |
|
|
If you remove the seats and the bolts rusted you will have to find a way to fix it. The captive nut sometimes turns and you cannot get it tight so I put a bolt through the nut and pushed it through the floor and finished it off with a nut. Not the best way but it was easy and not glamorous.
WD40 the tracks so they slide better.
In some instances the floor rusts and that has to be taken care of unless you like to land in the back seat.
Don't mess with seat problems it is dangeous in a crash.
The seat or the track are not welded to the floor unless someone did weld it. Rusted?
_________________
"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock
Last edited by Vince Ponz on Sat Apr 17, 2010 11:37 pm; edited 1 time in total |
|
| Back to top |
|
|
Vince Ponz
Joined: 02 Nov 2002
Posts: 3581
Location: Florida
|
| Posted: Sat Apr 17, 2010 11:35 pm Post subject: |
|
|
If you remove the seats and the bolts rusted you will have to find a way to fix it. The captive nut sometimes turns and you cannot get it tight so I put a bolt through the nut and pushed it through the floor and finished it off with a nut. Not the best way but it was easy and not glamorous.
WD40 the tracks so they slide better.
In some instances the floor rusts and that has to be taken care of unless you like to land in the back seat.
Don't mess with seat problems it is dangeous in a crash.
_________________
"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock |
|
| Back to top |
|
|
staticsan
Joined: 19 Jan 2009
Posts: 450
Location: Sydney, Australia
|
| Posted: Sun Apr 18, 2010 9:47 am Post subject: |
|
|
The seats themselves are fine. The rails are rust-free, the bolts are all okay and come out just fine. They're just 6mm and NSW rules will want 8mm.
One of the mounts for the driver's seat in the cross-brace on the body has broken away, though. A previous owner had the lower rail welded on, which didn't look good, but pulling it off showed he did know what he was doing. I need to get this mounting point rebuilt and then do the same to the other seven so they can take 8mm bolts.
It sounds like I need to find a professional seat installer, but I was asking if anyone has rebuilt the cross-brace the seats mount to.
Wade. |
|
| Back to top |
|
|
fiat22turbo
Joined: 18 Jan 2006
Posts: 4040
Location: Portland, OR
|
| Posted: Sun Apr 18, 2010 10:02 am Post subject: |
|
|
Just need a good metal fabricator to cut open the brace, install new nut plates and close it back up.
Then I would prep and paint it properly for lengevity's sake.
_________________
Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose) |
|
| Back to top |
|
|
Vince Ponz
Joined: 02 Nov 2002
Posts: 3581
Location: Florida
|
| Posted: Sun Apr 18, 2010 11:45 pm Post subject: |
|
|
goofed
_________________
"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock
Last edited by Vince Ponz on Sun Apr 18, 2010 11:46 pm; edited 1 time in total |
|
| Back to top |
|
|
Vince Ponz
Joined: 02 Nov 2002
Posts: 3581
Location: Florida
|
| Posted: Sun Apr 18, 2010 11:45 pm Post subject: |
|
|
I have done this often. Reason was not to wear the seat in the same spot.
You can put the right side seat on the left and vice versa. They fit although the adjusters are on the other side.
That should solve the problem.
_________________
"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock |
|
| Back to top |
|
|
924guy
Joined: 29 Dec 2003
Posts: 2088
Location: Port St. Lucie, FL
|
| Posted: Mon Apr 19, 2010 12:39 am Post subject: |
|
|
I see two separate issues with increasing the bolt size.
the first is as above, obviously a bolt 2mm larger than factory will not fit in the stock captive nuts that are welded into the floor pan. there might be enough material there to drill and retap the captive nuts for the larger bolt size. the second option is as stated above, cut out mount point, drill a steel plate, weld the proper sized nut to it, weld them back in. and the third option is to drill through the existing mount plated, and use long bolts and heavy washers and go right through the floor and bolt from under the car, as Vince suggested above.
The second issue, and possibly of more consequence, is the mounting rail width. the 6mm mounting bolts with the Allan key heads fit fine, a hex head bolt will barely fit but if you find the right size, it can be done. increasing these to 8mm might be a stretch though, and the bolt heads may not fit in the available space. modifying the rails to make larger bolts fit, may hinder seat movement. It may take some doing to find the right sized hardware to make it work, maybe something from brake hardware with a high strength, minimal footprint. or everything might just bolt in with minimal fuss.
let us know how you conquer this issue.. 
_________________
Eric
78 924
82 931 SE "smokey"
99' VehiCross
Y2K Honda Insight
http://www.cardomain.com/id/924Guy
Performance by Pasha |
|
| Back to top |
|
|
staticsan
Joined: 19 Jan 2009
Posts: 450
Location: Sydney, Australia
|
| Posted: Mon Apr 19, 2010 9:06 am Post subject: |
|
|
| 924guy wrote: | I see two separate issues with increasing the bolt size.
the first is as above, obviously a bolt 2mm larger than factory will not fit in the stock captive nuts that are welded into the floor pan. there might be enough material there to drill and retap the captive nuts for the larger bolt size. the second option is as stated above, cut out mount point, drill a steel plate, weld the proper sized nut to it, weld them back in..... |
One of the mounts in the cross-brace was damaged enough to pull out the captive nut. It's not big enough to re-tap to 8mm.  So we'll probably go the second option.
I've got a friend who has worked on cars before and when I showed him pictures of the broken mount that's pretty much what he suggested. He's even willing to help me re-learn how to weld as it's been 20+ years since I did last (high school!).
| Quote: | | The second issue, and possibly of more consequence, is the mounting rail width. the 6mm mounting bolts with the Allan key heads fit fine, a hex head bolt will barely fit but if you find the right size, it can be done. increasing these to 8mm might be a stretch though, and the bolt heads may not fit in the available space. modifying the rails to make larger bolts fit, may hinder seat movement. It may take some doing to find the right sized hardware to make it work, maybe something from brake hardware with a high strength, minimal footprint. or everything might just bolt in with minimal fuss. |
The existing 6mm bolt is a hex head and that just fits with room for a socket. 8mm allenkey heads are easy to find and I even know where to buy high-tensile ones, too. It helps that old Porsches are metric. 
| Quote: | | let us know how you conquer this issue.. |
Oh absolutely! With pics, even.
Wade. |
|
| Back to top |
|
|
Smoothie
Joined: 01 Jan 2003
Posts: 8032
Location: DE (the one near MD, PA, NJ)
|
| Posted: Tue Apr 20, 2010 10:47 am Post subject: |
|
|
I've a vague recollection of a topic here long ago involving seat mount repair, and Oz requirements.
Around these parts, one would simply run a longer bolt through the bottom of the car, add one or two extra large diameter washers ("fender washers" here), a lock-washer and nut..
-But our freind from Oz could not get away with just that. To satisfy NSW, he had to weld on a plate of some specific minimum thickness, and overall dimension (4"x4" possibly? - another fuzzy recollection that comes to mind)...
_________________
"..it's made in Germany. You know the Germans always make good stuff."
'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox |
|
| Back to top |
|
|
Smoothie
Joined: 01 Jan 2003
Posts: 8032
Location: DE (the one near MD, PA, NJ)
|
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
924 FAQ (Technical)
