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Join Date: Feb 2007
Location: Saskatchewan
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How do i get a G50 in an SC?

I want to be able to use the power of my 3.6 without blowing the 915. What do i have to do to make a g50 fit in the SC? or what do i have to do to make the 915 handle the power?

Old 03-05-2007, 04:30 PM
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durn for'ner
 
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Fitting a G50 in a pre-87 car is quite an expensive and labor some ordeal. But that is pretty much all I know on the subject.
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Old 03-05-2007, 04:34 PM
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A stock 915 will work fine assuming that it is in good working order to begin with. And assuming that you do not "launch" the car off the line.

I'm using a 915 (as are many other people) with my 3.6L in my SC.

And to answer your question, I think you can have the G50 "shortened" to fit the SC/Carrera. A more expensive way to go for sure. Plus you need the G50 hydraulics off the later car (pedal cluster, lines, etc...). Check out http://www.patrickmotorsports.com/cgi-bin/main?action=special&page=G%2D50%20Transmissions


TonyG
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Old 03-05-2007, 04:49 PM
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I'm with Tony. I had an '81 SC with 3.6 and the 915 had no issues. I did have it rebuilt prior to the engine swap to make sure everything was as good as it could be. Other than that I upgraded the clutch to a sachs power clutch. It was a great combination.

Getting a g-50 in is very expensive and time consuming. I'd have to think hard about the numbers, but the cost woiuld rival what it cost to do the 3.6 swap.


Jeff
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Jeff C
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Old 03-05-2007, 04:54 PM
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Wait a minute...I remember you from the "can I beat a camaro" thread. None of the Porsche Trannys can handle hard launches. Just not designed that way. If you haven't already, search on Juan Ruiz and send him a note with your project. He is the king of 911 drag technology having built and raced some great technology at the strip. I'm sure he would be happy to help you out with all the know how you want. Be warned he will try to talk you into turbo charging your car.

I like your thinking by the way. Don't listen to all the Bozos that say go buy a mustang. It's cool to want to build something and go for it.



Good Luck

Jeff
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Old 03-05-2007, 05:02 PM
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This may be a stupid question, but are there any other tranmissions, beside Porsche transmissions, that can match up to a 3.6 or any other Porsche engine? Apparently the Porsche transmissions are not made for drag racing, but the motors can handle it. The rear engine would make great traction. The transmission is the weak link to a really good dragster configuration.
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Old 03-06-2007, 04:49 AM
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so what you guys are saying is....the tranny will hold up as long as I don't launch the car hard. But if I was rolling in second and i hammered on it...is that too hard also? I mean the tranny is good for autocross, but where is the differance? I have never autocrossed in my life...as we don't have any tracks near by.
But if I were to pass someone on the highway going 60 mph and i dropped it down and jumped on it, will it handle that? The way i am looking at it is why put this engine in if I can't use the power.

Please correct me if i am wrong. And yeah...the best part of this project for me is that I am doing it all myself so I will know the car insiude and out.
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Old 03-06-2007, 05:36 AM
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there are stronger trannys available....like the Hewland...and others of the same design.
They come with the bellhousing drilled for your application.
They are NOT cheap!
Speed costs money...how fast you want to go?
Bob
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Old 03-06-2007, 05:43 AM
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What about this? Dunno anything about it but had the site bookmarked.

www.patrickmotorsports.com/cgi-bin/main?action=special&page=G%2D50%20Transmissions
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Last edited by Drdogface; 03-06-2007 at 07:47 AM..
Old 03-06-2007, 05:45 AM
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The driving style you ask about is perfectly fine. These cars and tranny's are basically race designed and proven. I would suggest a trip to your closest PCA DE event and go for a ride with an instructor. I think you will have an eye opening on what these cars can do. They can take hard driving and max rev's at the track and drive home as a docile domestic.
If you're looking for a street cruiser with bursts of power, you might want to re-gear your 915 for your puproses.
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Old 03-06-2007, 05:45 AM
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I keep jumping after Tony but again he's dead on. The driving style you describe is very similar to track driving. Coming out of a hairpin onto a straight you are coming out at say 20 mph and on the gas hard. More of a squeeze than a stomp, but thats what these cars are made for. On the track you repeat that over and over and over in a weekend. I did it with my 81 Sc w/ 3.6. The new owner of my car uses exclusively at the track and last I heard he is having a blast. The 915 can handle it as long as you make sure it's in solid shape to start with.

Enjoy

Jeff
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Old 03-06-2007, 05:58 AM
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i looked into a G-50 convert.

after coil overs etc etc i was up over $10k
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Old 03-06-2007, 06:05 AM
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Old 03-06-2007, 06:15 AM
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Maybe he just wants to spend money. I've worked for a few race teams that worked that way.

Richard
Old 03-06-2007, 06:23 AM
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Re: How do i get a G50 in an SC?

Quote:
Originally posted by in_style
I want to be able to use the power of my 3.6 without blowing the 915. What do i have to do to make a g50 fit in the SC? or what do i have to do to make the 915 handle the power?
Well, the funny answer is to buy an '87 and put SC badges on it.

Or maybe put the tranny in the back seat of your SC.

At 60 you'll probably only drop down to 3rd, not 2nd. I think the biggest problem would come from a high rpm launch. Like going 0 or even 20, reving the engine up to 5000 and then dumping the clutch. Also, if you start hammering your shifts, that'll be a problem eventually.
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Old 03-06-2007, 07:40 AM
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You can buy a lot of 915 trannys for the cost of a G50 swap.

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Old 03-06-2007, 07:55 AM
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