G50/50 into '87 930

[RPKESQ]

Hello All,
I have searched this topic, but have only found G50's into 911's. Or G50's into 930's. I am trying to find out the best way to put a 1989 G50/50 (a G50 model made for the '89 930 only) into a '87 930. I have heard that you cam just shorten the bell housing, but I am not sure that applys to the G50/50 or to the rest of the G50's. I know I'll need a clutch cylinder and line, shifter, etc.. I am most concerned as to the transmission mounting and engine mods. New flywheel (which one), new clutch (which one), ring gear, starter, etc. Thanks for all the help.

[9dreizig]

I would consult Patrick Motor Sports on this one.. They sell a conversion ..

[caliber60]

It's probably not worth the time and money. You should just sell the '87 and buy a '89. '89 G50 is the way to go. RUF replaced g50 with it's own 5-speed CTR after the G50 came out.

[RPKESQ]

Caliber60,
I have a hard time with that economic synopsis. I already own outright a mint less than 35K miles car, that I have replaced all the fuel/hydraulic lines, installed a fuel cell, 965 IC and a KKK27/7200 HF, headers, a front mounted oil cooler, new suspension componets, roll bar, seats, 17" wheels, CF bumpers, hood, etc. I already own a mint less than 35K G50/50 with LSD. If I sell the car I own and find a '89 930 in like condition, I will spend more and loose most of my dollars aready spent. I really am looking for the G50/50 conversion specs to finish this project.
Thanks anyway

[dean]

Originally posted by 9dreizig
I would consult Patrick Motor Sports on this one.. They sell a conversion ..

Jim Patrick would be the last person I would call. But maybe the day I called, he was on day 10,000 of not getting laid.

I would do a little more research on the size of the different trannys to see how they will fit. I know the G50/50 is one of the longest ones. But you have a longer engine bay. So if you shorten the tranny it just might fit. Maybe post on another board also.

I also know that the gearing on the G50/50 is very tall. But that might not bother you or you could change it.

Good luck

[9dreizig]

Dean, when you put into that context.....
Hey are you coming to the BBQ ?
Todd

[Craig 930 RS]

I've a G50/50 in my '82 930.

A true G50/50 was from ONE year - 1989. Later models were a G50/52.
Sweet mother of God, those 1989 trans are 10k now. Budget for another 6k for the work for installation - it is a BIIIIIIIIIG deal.

Don't do it.

[dean]

Originally posted by 9dreizig
Dean, when you put into that context.....
Hey are you coming to the BBQ ?
Todd

I sure am going to try Todd

And Craig don't be such a pussy. He already has the tranny and maybe he can do the work himself. Maybe you could offer some advice instead like "yes my tranny is shortened and it fits fine".

[9dreizig]

Good, hey Craig you're invited too!! ( but it's kinda far). I will be in Seattle in two weeks however and would love to buy you a beer for a ride in that monster turbo of yours ( will it be running again by then ?).
T

[Craig 930 RS]

Yes Dean.....I'm an f'in pussy. A big ol' mean, negative pussy.
Also realistic.

So until you have seen the process, Dean - you might want to deferr the lessons learned to people like myself who know what huge effort it takes a shop - or an individual - to do this conversion. It IS a big deal.

9D - shoot me a PM when you are about to land in town, it should be up and running by then. The heads are in the shop and work is underway.

RP -
Send me an e-mail at craigcarolann@comcast.net

[sewell94]

did i miss something between dean and craig?? either way Dean has done a g50 conversion, so i'm pretty sure he knows the details. I mean besides the cost, how can u knock a g50 conversion, i'm doing one on mine and wished i had a 50-50 instead.

[9dreizig]

You guys will have to excuse Dean, he does projects that no mortal should be able to do.. ( and does a good job too!).

[Bruce M.]

I've driven both a stock G-50/50 and a stock G50 in a 930. I prefer the latter, but that's probably because I was looking for a shorter gearset.

As to time and expense--yes, it's a big deal. That having been said, I didn't start with a G-50/50 with LSD in my hot little hands. I would have sweated it far less than I did if that had been the case.

Jim Patrick does know his stuff on these trannies. His phone manner is inconsistent, though, to put it charitably. He can be just fine--very helpful and even chatty--and he can be so short that it's like pulling teeth to get anything out of him. He does sell all you need to get a G-50/50 installed, however...

[dean]

Hey Craig, Sorry for calling you a pussy but it seems like alot of people are afraid of modding there cars cause of "the lack of return on their money".

I have done a G50 conversion and an EFI conversion. Was it worth the money, probably not but I can't imagine the car without the conversions. And it was a lot of fun and frustating at the same time. I also learned a lot doing it.

So Craig how bout measureing your bell housing and looking to see how the front of the trany clears the torsion tube for the original poster?

[SCHNELE]

Hi Bruce, it is Lincoln Phillip the other crazy Lawyer.
I am in the middle of a G50/50 conversion it is on order with Jim Patrick, to the tune of 11.5k just for the kit with a chromoly LSD from Guard. Jim is at first kind of a prick because the poor guy is a cynic, he thinks everyone is a tire kicker and it could hurt his business but I am sure he knows that, but things change quickly when you call him with a credit card deposit.
My EFI conversion is spiralling out of control somebody please help me I have turned into a junkie, I get less work done and I am spending waaay too much time on Porsche related stuff.

[dean]

Originally posted by Bruce M.
He does sell all you need to get a G-50/50 installed, however...

So does the guy at California Motorsport. I can't remember his name right now- Bobby Hart I think. He does all the trannys for Powerhaus 2. And he is a much nicer guy.

[SCHNELE]

Project Type 930

Engine
Stock crank, case, oil pump, etc.
Case boat tailed
Pauter rods
3.4L 7.5:1 pistons
Cylinders and heads Nirostat fire rings
930 heads ported with stock valve sizes, but smaller 993 8mm valve stem diameter on inlet valve
Valves to be back cut for flow improvements
Twin plug with Bosch silver plugs W4CS
Imagine auto valve springs and titanium retainers
Imagine auto GT2 Evo custom grind cams
Carrera 3.2 liter intake manifold (I might do a custom GT3R manifold)
Custom fuel rails, regulator, damper, etc, stock fuel pressure
Siemens injectors
Full bay intercooler or C2 Turbo (993 condenser AC Retained) I still need an Intercooler Marco Manzie or Protomotive are in the running
B&B Headers (retained)
Fabspeed Dual out exhaust
Imagine Auto’s HF2 Turbo done by Kevin www.Ultimatemotorwerks.com
Tial BOV, Wastegate
MoTeC M600 or M48 Pro
M & W double ended coil
M &W CDI controller
HKS EVC 5 boost controller

Transmission

G50/50 Patrick Motorsports with Guard LSD

Suspension

I currently have upgraded torsion bars and custom valved Bilsteins. I will consider any recommendations for street with mild track applications?

Braking and Running Gear

The car presently has Big Reds all around and 17” Ruf classics (17x8 and 17x 10 with Michelin Pilot Sport Cups).


My goal is a drivable car with 550hp at the wheels.

[Bruce M.]

Hey Lincoln--

I'd get a full bay intercooler with that set up. What happened with Holcombe? No help on exhaust, headers, intercooler?

Ruf wheels are nice, but they are too damn heavy. I had a set on mine and saved 44 lbs of unsprung weight by going to Fikses.

With that kind of power, you'll want not only thick (30 +) torsion bars in the rear, but also helper springs, I predict.

Since you are presumably going to split the case anyway, you might want to see whether your builder has a spare 993 or 964 crank lying around... You'll need to chamfer the heads a little bit to fit the (Mahle?) pistons, but you get a bit more displacement that way.

My build is quite similar, and the car is a hoot.

[Craig 930 RS]

I'd buzz out and measure, but the car, engine, and transmission are in pieces and not right here. The 1989 G50/50 comes with a short housing right off the bat, I believe -

[sewell94]

Schnelle,
I gotta ask, how come u have a k27hf2 listed in your build. the stuff u have listed will make ALOT of hp, 650+ should be Np(minus the k27). 750 is more than possible if u get rid of the B&B headers. The reason I ask about the k27HZf is because they are crap compared to most other turbos, i know i'll piss alot of people off by saying that, but its true. On cis cars they work decent, but on an efi i wouldn't even think about running one. If u already have it i'm sorry i don't mean to insult you, but if u haven't bought i, DON'T. You have an awesome build going one that is capable of alot more, don't sell yourself or your car short