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How to identify G50/50?

Hello,

how can we identify a G50/50 for sure from outside?
..often the numbers on the bottom plate are invisible

further, is there a difference from outside to a G50/00?

Anyone know the latest prices for a G50/50 with LSD?


thanks
Falk

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Old 10-30-2010, 12:29 AM
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...is this a G50/50?



thanks
Falk
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87 930 bblk/blk
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Old 10-30-2010, 12:45 AM
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Hi Falk,

To me it does not look like a G50/50, more like a G50/03, G50/04, G50/05

Look at this link which describes some of the G50

California Motorsports Porsche G50 5 speed transmission section
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Trond R.
1979 930: Garret GT35r turbo, EFI, carerra intake, Link EMS, custom GT2 cams, 98mm JE P/C, 964 crank (stroker), custom valves & ported (XtremeCylinderHeads) etc..etc..
1972 914-6 GT replica project
1986 944 Turbo
Old 10-30-2010, 01:09 AM
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...maybe this helps to identify this gearbox?



Falk
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Old 10-30-2010, 02:08 AM
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that is just a part number for the housing.
you should find the number to identify the tranny under the transmission.
You do not have a g50/50.
It can be a g50/52 or a G50/03, G50/04, G50/05. It will say under the tranny if it's not grinded away...
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Old 10-30-2010, 02:30 AM
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Yes,
I already found that this is G50/52.
As I have a 87 930 with G50/00 conversion,
this G50/52 will not fit easy.

Further, I havn`t bought this gearbox yet,
for me it seems less worth then a G50/50,
is that correct?

Anyone know what is involved to swap a G50/00 for a G50/52?

Falk
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Old 10-30-2010, 05:14 AM
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The 50/52 is the stock 964 turbo box, and obviously easier to come by.
You can tell by counting the bolts around the side cover, the 50/50 and 50/52 have 12 bolts, i think the lower "none turbo" G50's only have 11. I didn't think there was any real difference between the 50/50 and 50/52, but i have heard somewhere that the 50/50 was stonger, but not sure. Either are great boxes!!

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87 930, 993 turbo engine, RS Tuning 520PS/515lbf-ft, Arrow Rods, ARP hardware, Solid lifters, G50-50, RS Flywheel, 890nm Sachs clutch, RSR coil overs all round, 993 C4 calipers front, 930 fronts on the rear, Ruf Speedlines.....
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Old 10-30-2010, 06:46 AM
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The g50/52 has a bigger differential. the differential housing is aprox 2.3cm longer than g50/01.
Also i think the trannsmissions that have dual mass flywheel has 2mm longer clutch housing.

You ca see my g50/01 to g50/52 swap here: Converting long G50 into short g50

If you already have a g50 I don't se the need for a g50/52...
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Last edited by Stein; 10-30-2010 at 07:14 AM..
Old 10-30-2010, 07:01 AM
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Stein,

Great thread. I am looking for a G50 for my build and this made things a lot easier for me to make my decision.

Although, I still may look for a 6 speed.
Old 10-30-2010, 07:57 AM
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Stein,
I saw your conversion threat before, very infomative!

Another difference seems the front cover with the
different mounting points.
In Steins conversion the front cover was simply cutted
and if I am right, new mounting points welded on.

The G50/52 above has a LSD and is for sale+ ship
across Europe at ~2250,- Euro (3200$)
If I pass on this, I will let you know,
maybe one here needs it.


Falk
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Old 10-30-2010, 08:08 AM
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All G50/50's and G50/52 boxes came with LSD from the factory.
I don't agree that any G50 is as good, the gearing in the turbo boxes is better suited for the turbo, and they are stronger.
2250 euros is an absolute steel Falk, the kit car guys would pay double that figure. Other than it being a bit dirty, do you know if it's in good shape?
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Jonathan.
87 930, 993 turbo engine, RS Tuning 520PS/515lbf-ft, Arrow Rods, ARP hardware, Solid lifters, G50-50, RS Flywheel, 890nm Sachs clutch, RSR coil overs all round, 993 C4 calipers front, 930 fronts on the rear, Ruf Speedlines.....
Old 540 BMW, XB12S Modified, for being a total hooligan
Old 10-30-2010, 10:57 AM
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Quote:
Originally Posted by JBL930 View Post
2250 euros is an absolute steel Falk, the kit car guys would pay double that figure. Other than it being a bit dirty, do you know if it's in good shape?
truly, only the seller states its in very good condition.
more, I guess its neccessary to open it to see the condition.

To bad it isn`t a G50/50 which I would like to have for the case
my G50/00 needs replacement.

Falk
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87 930 bblk/blk
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Old 10-30-2010, 11:08 AM
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My G50/52

Stock 1991 Turbo Transmission:


Thanks,
Mark
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Old 10-30-2010, 11:58 AM
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This is always good info for a thread like this


G50.00 1987-1989** 3.2 Carrera, Rest of World version
G50.01 1987-1989** 3.2 Carrera, US/CDN/Aus/Jpn version
G50.02 1987-1989** 3.2 Carrera, Swiss version

G50.03 964 C2 1990-1992 1L is plain, 2L is M220
G50.04 964 C2 1990-1994 Swiss version
G50.05 964 C2 1992-1994 US/CDN version including RS America
G50.10 964 RS (street legal basic race car, non-US)

G50.20 993 C2 US/CDN/Swiss version
G50.21 993 C2 ROW
G50.31 993 C2 RS version ROW only
G50.32 993 C2 RS M003 (clubsport) version ROW only
G50.33 993 C2 RS Swiss version only

G50.50 3.3 Turbo 1989 first G50 turbo version (larger ring & pinion)
G50.52 965 C2 Turbo 1991-1994


Ratios

G50/00 3.5 2.059 1.409 1.074 0.861 (after 1988 0.868) diff 9:31
G50/01 3.5 2.059 1.409 1.125 0.889 (after 1988 0.892)
G50/02 3.154 1.895 1.333 1.036 0.861 (after 1988 0.868)
G50/03 3.5 2.059 1.407 1.086 0.868
G50/04 3.154 1.895 1.333 1.029 0.868
G50/05 3.5 2.059 1.407 1.086 0.868 diff 3.333:1
G50/10 3.154 1.895 1.407 1.086 0.868
G50/50 3.154 1.789 1.269 0.967 0.756
G50/52 3.154 1.789 1.269 0.967 0.756

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87 930, 993 turbo engine, RS Tuning 520PS/515lbf-ft, Arrow Rods, ARP hardware, Solid lifters, G50-50, RS Flywheel, 890nm Sachs clutch, RSR coil overs all round, 993 C4 calipers front, 930 fronts on the rear, Ruf Speedlines.....
Old 540 BMW, XB12S Modified, for being a total hooligan
Old 10-30-2010, 12:10 PM
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