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CarreraMonkey
Watkins Glen
Joined: 02 Sep 2013
Posts: 2000
Location: Silverstone (ish)
2007 Porsche 997 Carrera 4S
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 Posted: Sun Jul 17, 2016 9:23 am Post subject: A quick G50 question
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Hi folks
Looking to get a 3.2 carrera to go in the garage with our water cooled cars. I'm aware that the g50 gear box is the one to have and that it was introduced in '87 but is that manufacturing year or delivery year?
Looking at a car registered in '86 and want to know if it's likely to have a g50 or 915 box.
Thanks for your assistance.
Monkey
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Laters Taters!
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IMI A
Suzuka
Joined: 02 Aug 2014
Posts: 1064
Location: United Kingdom
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| Posted: Sun Jul 17, 2016 5:09 pm Post subject:
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Cars built from September 1986 onward received the more user-friendly G50 gearbox. Personally I'd buy the best condition Carrera out there for your budget and not worry about whether its a G50 or a 915. More important to avoid rust bucket, gearbox rebuild and or engine rebuild 
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IMI A
Suzuka
Joined: 02 Aug 2014
Posts: 1064
Location: United Kingdom
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| Posted: Sun Jul 17, 2016 5:12 pm Post subject: Carrera
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CarreraMonkey
Watkins Glen
Joined: 02 Sep 2013
Posts: 2000
Location: Silverstone (ish)
2007 Porsche 997 Carrera 4S
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| Posted: Sun Jul 17, 2016 8:08 pm Post subject:
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Good advice! Was just interested to know when g50's were fitted from.
Next question....
Will 7" fronts and 9" rears Fuchs fit onto a standard bodied car? I've done some research and think they're ok, but wanted to get confirmation from someone that knows about these cars.
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kas750
Estoril
Joined: 31 Mar 2013
Posts: 3865
Location: Chorley lancashire
2006 Porsche 911
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| Posted: Sun Jul 17, 2016 8:25 pm Post subject:
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| IMI A wrote: | | Cars built from September 1986 onward received the more user-friendly G50 gearbox. Personally I'd buy the best condition Carrera out there for your budget and not worry about whether its a G50 or a 915. More important to avoid rust bucket, gearbox rebuild and or engine rebuild |
Spot on. A good 915 is absolutely fine.Condition is EVERYTHING!
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grbspeedster
Montreal
Joined: 11 Nov 2007
Posts: 517
Location: Rugby
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| Posted: Sun Jul 17, 2016 8:58 pm Post subject:
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I ran turbo Fuchs on my SC with no issues, just watch tyre profile as some may just catch edge under full articulation of rear suspension. You could roll edge of arch if issue. Good 915 is ok but you always have to be considerate on gear change, swepco oil made improvement on mine. Had the G50 in my speedster as was much more user friendly. Agree above condition with regard to rust is everything, watch the kidney bowls. Have a look on impactbumpers.com good advice on what to look for and lots of detail on rust
Good luck great cars
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Geoff
996 X50 turbo cab
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Palladium
Indianapolis
Joined: 01 Nov 2015
Posts: 2496
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| Posted: Sun Jul 17, 2016 9:17 pm Post subject:
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915 is better than G50, a proper racers gearbox, easy to operate, you just have to think a little, they were ok for 20 years and hundreds of thousands of cars, ive tried both, and I wouldn't be buying on the type of gearbox, just whether it worked as it should.
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kas750
Estoril
Joined: 31 Mar 2013
Posts: 3865
Location: Chorley lancashire
2006 Porsche 911
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| Posted: Sun Jul 17, 2016 9:20 pm Post subject:
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Press the clutch fully home when changing gear and its as good as any other box.I loved mine and frankly didn't understand the fuss!
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Palladium
Indianapolis
Joined: 01 Nov 2015
Posts: 2496
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| Posted: Sun Jul 17, 2016 9:51 pm Post subject:
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if you read the handbook, it clearly states that you should engage the clutch and wait several seconds before using reverse.
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IMI A
Suzuka
Joined: 02 Aug 2014
Posts: 1064
Location: United Kingdom
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| Posted: Mon Jul 18, 2016 5:37 am Post subject:
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| CarreraMonkey wrote: | Good advice! Was just interested to know when g50's were fitted from.
Next question....
Will 7" fronts and 9" rears Fuchs fit onto a standard bodied car? I've done some research and think they're ok, but wanted to get confirmation from someone that knows about these cars. |
Yes the car in that pic is running 7 and 9 inch fuchs and was specced with them from the factory. Steering is much heavier but handling much improved. By that I mean its less prone to lift off oversteer and swapping ends especially in the wet. You can lean on the car hard through corners As others have said condition everything. You're much better off buying a mint car which has had everything done and paying a bit more than buying a fixer upper unless you can do the remedial work yourself. Most gearbox whether G50 or 915 you try probably need a rebuild
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Chester J Lampwick
Monza
Joined: 18 Mar 2013
Posts: 176
Location: Up North
1985 Porsche 911 3.2 Carrera
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| Posted: Mon Jul 18, 2016 10:07 am Post subject:
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| Palladium wrote: | | if you read the handbook, it clearly states that you should engage the clutch and wait several seconds before using reverse. |
I didn't know that - shows how much attention I paid to my manual, which I dug out to check.
My 120k mile old 915 box is fine now I'm used to it - the trick is to wait until its nice and warm before you try to get first while moving, and always engage gear from neutral at tickover - any revs and there will be an embarrassing crunch. On the test drive the dealer drove it first and crunched into first at the first junction. I was convinced it was knackered, but now I have the 'knack', and changing the fluid helped a lot. Adverts with 'the more desirable G50 box' just wind me up, I was talking to someone with one at Classic Le Mans, he reckoned its just a case of hydraulic clutch and more idiot proof synchros, particularly for yanks unused to manual boxes, make them more user friendly, but nothing wrong with a 915 if you know what you are doing.
As others have said, buy on condition, far more important.
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Never drive faster than your guardian angel can fly to keep up
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Palladium
Indianapolis
Joined: 01 Nov 2015
Posts: 2496
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| Posted: Mon Jul 18, 2016 9:53 pm Post subject:
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or you can just touch 2nd but don't go fully in, then immediately go to reverse and it just drops in 100% of the time, you are borrowing a synchro in a way, slowing the box down and all that, reverse has no synchro I believe.
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The Dragonmeister
Monza
Joined: 28 Apr 2012
Posts: 207
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| Posted: Tue Jul 19, 2016 7:02 am Post subject:
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Personally why not get to know the car first... bear in mind the 3.2 Carrera does not have power steering which your later model cars have so the bigger wheels will increase the steering effort.
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993 C2 1996
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CarreraMonkey
Watkins Glen
Joined: 02 Sep 2013
Posts: 2000
Location: Silverstone (ish)
2007 Porsche 997 Carrera 4S
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| Posted: Thu Jul 21, 2016 10:55 am Post subject:
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Speaking to a friend, he was telling me that every 915 box he's had (3 or 4) crunched going into 1st whilst moving. Is it a common problem?
I'm marginally concerned by the whole 915 thing as engine and box out so that the box can be rebuilt is inevitably costly. Or do most just live with a crunchy first?
I'm not buying the car to scream around in, I've got my regular car for that, so am wondering if I'm fussing over nothing?
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CarreraMonkey
Watkins Glen
Joined: 02 Sep 2013
Posts: 2000
Location: Silverstone (ish)
2007 Porsche 997 Carrera 4S
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| Posted: Thu Jul 21, 2016 10:58 am Post subject:
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| The Dragonmeister wrote: | | Personally why not get to know the car first... bear in mind the 3.2 Carrera does not have power steering which your later model cars have so the bigger wheels will increase the steering effort. |
It's got cup wheels (  ), which I would put back to Fuchs straight away. So figured I'd stick some meats on it if I'm going that way. Could always go stock 6 & 7's and stick some spacers in I guess.
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BenC
Hockenheim
Joined: 01 Oct 2014
Posts: 626
Location: Bucks
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| Posted: Thu Jul 21, 2016 3:46 pm Post subject:
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not sure if anyone has mentioned this, but easy way to tell which kind of 'box you have:
915 reverse is far bottom right
G50 reverse is far top left
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1997 Ocean Blue metallic manual Targa
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Palladium
Indianapolis
Joined: 01 Nov 2015
Posts: 2496
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| Posted: Thu Jul 21, 2016 6:42 pm Post subject:
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| CarreraMonkey wrote: | Speaking to a friend, he was telling me that every 915 box he's had (3 or 4) crunched going into 1st whilst moving. Is it a common problem?
I'm marginally concerned by the whole 915 thing as engine and box out so that the box can be rebuilt is inevitably costly. Or do most just live with a crunchy first?
I'm not buying the car to scream around in, I've got my regular car for that, so am wondering if I'm fussing over nothing? |
they don't have a crunchy first, you put your clutch in, and select gear, they work perfectly, its all hype and bollocks about them being dodgy.
You just have to have your clutch. adjusted correctly and keep foot to floor until you have changed, ***** easy.
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kas750
Estoril
Joined: 31 Mar 2013
Posts: 3865
Location: Chorley lancashire
2006 Porsche 911
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| Posted: Thu Jul 21, 2016 8:04 pm Post subject:
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A crunchy first gear is a result of ham fisted previous owners.
I really enjoyed that box in my SC and liked the mechanical feel and the way that you had physically drive lever across the gate.
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Frosticles
Newbie
Joined: 27 Nov 2013
Posts: 20
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| Posted: Thu Jul 21, 2016 8:44 pm Post subject:
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| kas750 wrote: | | IMI A wrote: | | Cars built from September 1986 onward received the more user-friendly G50 gearbox. Personally I'd buy the best condition Carrera out there for your budget and not worry about whether its a G50 or a 915. More important to avoid rust bucket, gearbox rebuild and or engine rebuild |
Spot on. A good 915 is absolutely fine.Condition is EVERYTHING! |
Very sound advice. I have just bought a very early 3.2 Sport with the 915 box. Once you've mastered it there should never be a problem. Actually really like mine as it adds to the driving experience. Mine also has a Wevo Quick Shift kit which I think makes it more positive.
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CarreraMonkey
Watkins Glen
Joined: 02 Sep 2013
Posts: 2000
Location: Silverstone (ish)
2007 Porsche 997 Carrera 4S
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| Posted: Mon Jul 25, 2016 11:55 am Post subject:
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| Palladium wrote: | | CarreraMonkey wrote: | Speaking to a friend, he was telling me that every 915 box he's had (3 or 4) crunched going into 1st whilst moving. Is it a common problem?
I'm marginally concerned by the whole 915 thing as engine and box out so that the box can be rebuilt is inevitably costly. Or do most just live with a crunchy first?
I'm not buying the car to scream around in, I've got my regular car for that, so am wondering if I'm fussing over nothing? |
they don't have a crunchy first, you put your clutch in, and select gear, they work perfectly, its all hype and bollocks about them being dodgy.
You just have to have your clutch. adjusted correctly and keep foot to floor until you have changed, ***** easy. |
I love answers like this. Basically 'just get on with it!' Which is the sort of thing I used to say to nervous prospective VW air cooled owners.
So that's what I'm going to do.
Lemonsville, here I come!
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