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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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 Posted: Fri Oct 18, 2013 4:26 am Post subject: Firewall Blues |
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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Rasta Monsta
Joined: 12 Jul 2006
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| Posted: Fri Oct 18, 2013 4:51 am Post subject: |
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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jazz guy
Joined: 26 Nov 2002
Posts: 434
Location: Colorado
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| Posted: Fri Oct 18, 2013 5:27 am Post subject: |
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Ouch, sorry  |
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morghen
Joined: 21 Jan 2005
Posts: 9095
Location: Romania
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| Posted: Fri Oct 18, 2013 5:43 am Post subject: |
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owie !
reinforcement plate?
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Fifty50Plus
Joined: 28 Feb 2008
Posts: 1422
Location: Washington DC area
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| Posted: Fri Oct 18, 2013 7:09 am Post subject: |
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Duct tape or hot wrench....  you decide.
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1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA |
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Fri Oct 18, 2013 7:12 am Post subject: |
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Not sure what the fix will be, but I'll post whatever I decide.
The reinforcement plate is tempting, but the problem is the firewall is not flat in that area, particularly where the clutch master bolts up. . .it is shaped to orient the cylinder parallel to the pedal travel, and a flat piece there apparently causes excessive wear on the cylinder due to misalignment.
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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!tom
Joined: 28 Aug 2006
Posts: 1941
Location: Victoria, BC Canada
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| Posted: Fri Oct 18, 2013 3:05 pm Post subject: |
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Can't you just weld it back up?
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78 924 NA
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morghen
Joined: 21 Jan 2005
Posts: 9095
Location: Romania
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| Posted: Fri Oct 18, 2013 3:37 pm Post subject: |
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Welding is the last option on these cars.
My car was a NA and the place where the clutch cyl is was flat...so i added a thick aluminium plate.
I did notice the missalignment but that could be corrected with a custom bit of steel...no big deal.
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Grenadiers
Joined: 20 Feb 2007
Posts: 3222
Location: Nelson, WI & Prescott, AZ
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| Posted: Fri Nov 01, 2013 6:58 am Post subject: |
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Curiosity got the best of me, in time! Mine is doing the same thing. Of course I had the black plastic firewall stuff in place, didn't see this before. This car of mine is jinxed, this is just the latest. Grrrrrr..
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'83 944 Track car.
'88 924S Track car.
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Fri Nov 01, 2013 7:35 am Post subject: |
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Getting a repair plate from Rennbay. . .stand by for installation pics.
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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!tom
Joined: 28 Aug 2006
Posts: 1941
Location: Victoria, BC Canada
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| Posted: Fri Nov 01, 2013 2:29 pm Post subject: |
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| morghen wrote: | | Welding is the last option on these cars. |
Why?
I've welded up a few cracks.
Please enlighten me as to why this was a bad idea.
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78 924 NA
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Sat Nov 02, 2013 4:41 am Post subject: |
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Very thin metal there. Strengthening a crack by laying a bead over it will cause neighboring areas to fail. Also finding the end of a crack can be problematic.
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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morghen
Joined: 21 Jan 2005
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Location: Romania
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| Posted: Sat Nov 02, 2013 5:08 am Post subject: |
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| !tom wrote: | | morghen wrote: | | Welding is the last option on these cars. |
Why?
I've welded up a few cracks.
Please enlighten me as to why this was a bad idea. |
What Rasta said + the heat from the weld destroys the galvanic coating around the area where you weld...making easyer for rust to begin eating your car.
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Grenadiers
Joined: 20 Feb 2007
Posts: 3222
Location: Nelson, WI & Prescott, AZ
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| Posted: Wed Nov 06, 2013 2:14 pm Post subject: |
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Well, I made a 22 gauge sheet metal patch and riveted it using ten 3/8ths inch steel rivets. Worked out great, no deflection so far. Noticeable pedal improvement.
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'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
2004 Winnebago Vectra monster RV
2012 Jeep Wrangler
2014 Kia Soul
2001 Ford F350 powerstroke |
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Sat Nov 16, 2013 2:56 am Post subject: |
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Repair underway:
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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