924Board.org

Andre' · Posted: Sun Oct 09, 2011 11:11 am Post subject: 944 fuel tank in a 924S?

Just discovered my fuel tank is leaking gas - rust between the strap and the tank. Could I replace with a 944 gas tank, possibly from a 944 TurboS as found on EBAY?! Not sure here - this tank looks like made from plastic, and I'm also not sure about the fuel pump location on the 944"s. Lot's of questions here- maybe someone knows the answer, or even has a fuel tank available specifically for the 924S?

Regards, Andre'

Paul · Posted: Sun Oct 09, 2011 11:27 am Post subject:

http://www.924board.org/viewtopic.php?t=29582
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

Andre' · Posted: Sun Oct 09, 2011 11:47 am Post subject:

Paul, thank you very much for the link! Excellent write up as to how to fit this late moldel plastic tank to a 924S but - HOLY CRAP - I'm not sure if I want to take it that far...

Probaly easier to just stick to the original!

Andre'

Andre' · Posted: Sun Oct 09, 2011 11:51 am Post subject:

Another thought - how about repairing the tank? Having no death wishes here I'm not thinking about a weld job (although it could be done) but how about pop rivets and a sealant that withstands gasoline? Has anyone ever tried this succesfully?

Andre'

Paul · Posted: Sun Oct 09, 2011 12:17 pm Post subject:

Pop rivets, not.

If you can get the area that's leaking very clean:

http://www.bikebandit.com/permatex-instant-gas-tank-repair?WT.mc_id=1484958
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Was not a hard project at all, and well worth it.
_________________
Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

joecitizennn · Joined: 12 Sep 2005 Posts: 2096 Location: no mans land

Standard JB quick weld works far better than the stuff in putty form. It will fill better and seal better. Just make sure to drain the tank first.
_________________
87 924s
88 924SE gone
447 hp cgt clone
87 924S gone
84 944 sold
83 944 sold
89 turbo S LSD, ABS etc
86 951 white rocket
85 944 sport everything.
84 944 sold.
87 944 sold

Andre' · Posted: Tue Oct 11, 2011 7:07 am Post subject:

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

But after you fix this, you realize there is a design flaw that will cause stress fractures in the stampings on top of the tank?
_________________
Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

Paul · Posted: Tue Oct 11, 2011 9:50 am Post subject:

The key is to not allow the tank to pressurize.
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

Andre' · Posted: Wed Oct 12, 2011 9:36 am Post subject:

Paul · Posted: Wed Oct 12, 2011 10:13 am Post subject:

Metal tanks have a known problem, they suffer from stress cracks on the top of the tank sooner or later.

Some of us do not allow the tank to pressurize to delay this issue.

Maybe we should all file a claim with the NSTB to see if a recall could be done.
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Kevin D · Joined: 28 Jul 2005 Posts: 152 Location: Boise, ID

My red beast sprung a leak in the tank last Spring. She still runs OK, unless I over-fill the tank. that makes it dicey in traffic.
I finally got a tank this fall out of a 944s2. The proceedure shouldn't be too much different from what Rasta described on the other thread (now part of my shop manual. Thanks!). Once the weather improves to allow for safe operation of my 2 wheeled daily driver, I'll start the swap.

Rasta - Any cautions you can think of for my swap? There isn't anything particular about my 3L and 6sp that would create any issues with a 944s2 tank, is there?
_________________
'88 924S 3L 6sp RedRat
'92 Duc 900ss
'02 Duc 998 Carbon
'72 RD 350

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Kevin D sighting!

Just be aware that I failed to photograph one of the important fabricated bits for this swap. . .the line from the pump to the filter was a combination of the toofah rubber/steel line and the late (in my case, 951) line. Also check the parts list carefully. . .you need much more than just the tank.

Maybe I will try to go snap it. . .
_________________
Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3