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Registered
Join Date: Dec 2019
Posts: 62
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87-89 G50 floor pan on an 83?
Hey,
I have an 83 911SC and I'm getting my torsion tube swapped to a 930 g50 tube. I'm putting an 89 G50/50 into the car. I was looking at sheet metal and was wondering if I could use the G50 floor pan and G50 rear seat casings instead of the SC sheet metal? That way I wouldn't need to do any other body mods for the G50/50 fitment, hopefully! lol The floor pan has a defined square indentation and the seats casings have a larger tunnel. I guess what I'm really asking, is this an easy fit or will there need to be a lot of hammering? I'll add photos below. Thanks for any info!  
Last edited by Newbie911; 01-07-2025 at 05:07 AM.. |
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01-07-2025, 04:14 AM
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Registered
Join Date: Dec 2019
Posts: 62
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It seem like it should fit.
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01-09-2025, 03:27 AM
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Registered
Join Date: Mar 2019
Posts: 1,617
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Or you can do what most body shops do and section out what parts you need to fit. Don't try to replace the whole panel, just use what you need from the new one.
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01-09-2025, 12:43 PM
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lake wales fla
Join Date: Feb 2017
Posts: 1,208
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Keep in mind that the G50-50 is approximately 25 mm (1inch) longer than a G50 so it’s not going to bolt right up like you think, it’s going to take some massaging of the trans cross member and tweaking of the rear crossbar. All 78-89 930’s the engine mounts are set back approximately 25 mm further than SC’s and Carreras.
Richard |
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01-09-2025, 04:00 PM
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Registered
Join Date: Jul 2003
Location: Glorious Pac NW
Posts: 4,184
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Quote:
Turbo 1st mainshaft is correspondingly longer internally (eg different bearing locations) - so turbo (/50, /52) and the N/A 1st mainshafts don't interchange. At least, not trivially (you can do anything with enough money). IMHO, 3.5 N/A 1st ratio not useful in a turbo anyway. G50/02 (Swiss market) 1st mainshaft will yield a 3.154 1st ratio (as per turbo, 993 RS/RSR) for N/A G50 5 speed boxes.
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'77 S with '78 930 power and a few other things. |
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01-13-2025, 06:40 AM
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Guys, he is putting an 89 turbo G50 torsion tube in (no small task) so he will have correct mounting for the 50/50. Be certain that you have it all aligned perfectly.
I dont think a new floor is necessary but don’t see why one could not add it. You should cut the seat pans a bit anyway in order to do a full perimeter weld of the new torsion tube so…
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-Jay '74 Mexico Blue 911 3.0 EFI (Fast and Loud) '70 914/6 Race Car (Faster and Louder) '71 73RSR tribute vintage race car 3.0 '68 SWB 911T "RENNRAT" 2.8 twin plug/915 gearbox '81 Magenta IROC clone in progress 3.6 varioram/G50 |
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01-13-2025, 07:17 AM
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