G50 vs 915?

[shoooo32]

Apples for apples, I'd rather have a G50 Carrera over a 915 Carrera.

However, a well set up mag case 915 in a light car would not be improved by swapping to a G50 (in my opinion). The weight penalty alone is reason enough.

Waiting for Julian to chime in...

[phunt]

A G50 like a G50-01 weighs 146lbs. A 915/61 weighs 130lbs. Big deal. Plus the majority of the weight of the transmissions is in front of the rear axles and center line of the rear wheels. So some of that transfers to the front. More weight towards the middle of the car.

[Kevin Stewart]

My question is which is the better daily driver, I plan to give my daughter my sc 3.6 hot rod. The shifting will be more of my concern over weight

[Antomero]

A 915 gearbox set up by Peter Dawe over at Dawe’s Motorsports is all you need.

Hands down!!!

[Showdown]

Called out by name…

After Tony rebuild my 915, it was like a revelation. Fast, precise shifts both up and down (yes, even 2nd to 1st while moving) from 2k up to 7k.

A well sorted 915 is a perfectly wonderfully transmission and effectively disappears when driving as it simply does what you want.

I’m sure a mediocre g50 is just as unpleasant as a mediocre 915.

Dollar for dollar, I’d place a proper trans rebuild over any engine mod followed by suspension work.

[wanabe911 owner]

I daily drove my 1986 911 with a rebuilt 915 for 10 years in Miami Traffic and it was fine. Before the rebuild not so much.
But that was 10 years ago so I might be waxing nostalgic.


Sent from my iPhone using Tapatalk

[Kevin Stewart]

Originally Posted by Showdown

Called out by name…

After Tony rebuild my 915, it was like a revelation. Fast, precise shifts both up and down (yes, even 2nd to 1st while moving) from 2k up to 7k.

A well sorted 915 is a perfectly wonderfully transmission and effectively disappears when driving as it simply does what you want.

I’m sure a mediocre g50 is just as unpleasant as a mediocre 915.

Dollar for dollar, I’d place a proper trans rebuild over any engine mod followed by suspension work.

Whos Tony.

[pmax]

Not mine ...



https://forums.pelicanparts.com/porsche-911-technical-forum/996366-915-shifting.html#post10034306

[shoooo32]

Originally Posted by phunt

A G50 like a G50-01 weighs 146lbs. A 915/61 weighs 130lbs. Big deal. Plus the majority of the weight of the transmissions is in front of the rear axles and center line of the rear wheels. So some of that transfers to the front. More weight towards the middle of the car.

A mag case 915 is 106lbs (so 40lbs lighter), and that's not counting the 10lb difference in pressure plate weight. For the dudes drilling holes in hood hinges and running plastic door handles to save grams, 50lbs is significant.

[Showdown]

Originally Posted by Kevin Stewart

Whos Tony.

Shoooo32. Our own.

[chucksmith]

I have a rebuilt 915 in my 80 3.6 VRAM hotrod and a G50 in my 87 m491 ,and feel the G50 is the better transmission. However, the 915 is good enough that I would never consider going through what it takes to upgrade to a G50 in that car. Both are a lot of fun to drive and the 915 handles the 300 HP VRAM just fine.

[PeteKz]

Maybe I've never driven a really good 915, although I've drive a number of them. I agree with chuck that the G50 is a better shifting transmission, but not better enough to justify cutting up the car to install one in an earlier body. I've gotten used to my 915 for what it is, and I make sure to get it into 1st before I come to a stop.

[gsmith660]

Originally Posted by PeteKz

Maybe I've never driven a really good 915, although I've drive a number of them. I agree with chuck that the G50 is a better shifting transmission, but not better enough to justify cutting up the car to install one in an earlier body. I've gotten used to my 915 for what it is, and I make sure to get it into 1st before I come to a stop.

The main reason to upgrade the transmission is because you have an engine that is beyond what a 915 can handle. I now have a 3.2 SS turbo that will grenade a 915 over time so I had to upgrade. I will say that when I put the engine back in this time I must have got it adjusted just right because it shifts really well for once that maybe because of the Sachs sport clutch I put in

[phunt]

Not worth the effort just get used too it. rebuilt by so and so on and on All about excuses as to why you are using a 915. Ok be happy. Maybe a 915 after rebuild is good for ten minutes. The borg warner synchronized transmissions are the standard. You are crazy wrong about the weight. Even the book says 915’s are 120-130 pounds empty depending on mag or aluminum. Most of the weight of the transmission is in front of the axles. So it moves the bias forward. Actually adds weight to the front wheels. So better. Even on a drilled hinge car. Typical “Porsche guy” comments. Just get used to it learn how to drive it it’s what make it magical. Bravo Sierra.

[phunt]

Here is a G50-01 empty it has the trans mount on it. 142lbs
Here are two 915’s. One does have the pressure plate throw out bearing and helper spring but otherwise empty. 142.8lbs
The other one is empty and DOES NOT have the differential nor the ring and pinion in it and nothing else on it. 101.2lbs

[Kevin Stewart]

Originally Posted by pmax

Not mine ...



https://forums.pelicanparts.com/porsche-911-technical-forum/996366-915-shifting.html#post10034306

took a tag to downshift to second, didnt even try first

[Kevin Stewart]

Originally Posted by phunt

Not worth the effort just get used too it. rebuilt by so and so on and on All about excuses as to why you are using a 915. Ok be happy. Maybe a 915 after rebuild is good for ten minutes. The borg warner synchronized transmissions are the standard. You are crazy wrong about the weight. Even the book says 915’s are 120-130 pounds empty depending on mag or aluminum. Most of the weight of the transmission is in front of the axles. So it moves the bias forward. Actually adds weight to the front wheels. So better. Even on a drilled hinge car. Typical “Porsche guy” comments. Just get used to it learn how to drive it it’s what make it magical. Bravo Sierra.

Not gonna give my daughter a get used to it trans. Looks like i need to find a g50 to drive.

[PeteKz]

How do I get you to adopt me as your daughter?

[chucksmith]

most of us are using a 915 because that is what was in the car, I like mine fine. I like the g50 better and my T56 in my old mustang even better ,and the PDK is better than all of them. No excuses

[wanabe911 owner]

Yeah, when I had my 86 I would have definitely wanted to do a G 50 swap, especially when a turbo charged it


Sent from my iPhone using Tapatalk