Notices
993 Forum 1995-1998
Sponsored by:
Sponsored by:

G50/31 gearbox enhancement

Thread Tools
 
Search this Thread
 
Old 09-07-2009, 03:05 PM
  #16  
Mike J
Addict
Lifetime Rennlist
Member
 
Mike J's Avatar
 
Join Date: May 2001
Location: Vancouver, BC
Posts: 8,363
Received 71 Likes on 58 Posts
Default

As my old chinese martial arts instructor would say "This one no cheap!". I would be curious to see what the cost is with the factory order, and how comparable is it to the $6K-$8K regearing costs? I just sent an email out to Jeff at Sunset, and will post the answer.

Sounds like I need to take a few transmission rebuilding classes and do another DIY...but in this case the parts are the majority of the costs, right?

What is the magic in these gearsets? Are they that hard to machine/manufacture do they are worth $600+ per gear?

Cheers,

Mike
Old 09-07-2009, 03:22 PM
  #17  
JM993
Banned
 
JM993's Avatar
 
Join Date: Feb 2004
Location: SF Bay Area
Posts: 2,361
Likes: 0
Received 5 Likes on 5 Posts
Default

I just bought the supposedly the last g50/31 on the shelf from Sunset. This doesn't mean that now they are NLA. It just means that if you order one it may be on backorder and take several months to get. The cost was approximately $8.8K + core charge and shipping. Expensive, but when you think about it, buying from Porsche is cheaper (and arguably better) than having your own box regeared.

- The g50/20s in our car are worth some decent $$$, as they are sought after not only by other Porsche owners, but Ultima and other kit car owners. This is a big deal as it really lowers the cost of the conversion.
- The g50/3x boxes come with a Porsche Motorsports LSD
- Porsche boxes come with a 2yr warranty
- Regearing my existing box and rebuilding my LSD (necessary for anyone with stock LSD) probably would have cost at least as much, if not more, as the Porsche box. And I've have no gearbox to sell and probably nowhere near as strong a warranty if something went wrong.
- Could care less about resale, but I'm with Mike J re: supercharger vs regear. Also, in CA in would be a PITA to smog a supercharged car.

I have driven regeared 993s and let me tell you, there's a big difference.
Cheers,
Joe
Old 09-07-2009, 03:32 PM
  #18  
timothymoffat
Rennlist Member
 
timothymoffat's Avatar
 
Join Date: Apr 2006
Location: Rainforest (Vancouver, BC)
Posts: 7,584
Received 1,043 Likes on 470 Posts
Default

8.8K? That's really not that bad when consider the cost to regear. OK, it's incredibly expensive but nothing for these cars is cheap. This way the tranny is fresh, geared properly, and probably a lot tougher.
Definitely on my want list (currently @ about $25K per car!).
Old 09-07-2009, 03:38 PM
  #19  
JM993
Banned
 
JM993's Avatar
 
Join Date: Feb 2004
Location: SF Bay Area
Posts: 2,361
Likes: 0
Received 5 Likes on 5 Posts
Default

Yep. But don't forget the core charge and the RS Clutch and LWF you'll want to install while you're in there......
Old 09-07-2009, 03:42 PM
  #20  
timothymoffat
Rennlist Member
 
timothymoffat's Avatar
 
Join Date: Apr 2006
Location: Rainforest (Vancouver, BC)
Posts: 7,584
Received 1,043 Likes on 470 Posts
Default

Originally Posted by jmarch
Yep. But don't forget the core charge and the RS Clutch and LWF you'll want to install while you're in there......
and the RS mounts, EVO uprights........
Old 09-07-2009, 03:57 PM
  #21  
Rinty
Drifting
 
Rinty's Avatar
 
Join Date: Apr 2008
Location: Calgary, Alberta
Posts: 2,650
Likes: 0
Received 3 Likes on 3 Posts
Default

Rennlister Herman Maier, who has done the re gear on his former car, gave me the same advice a few weeks ago, as set out in Joe's post, i.e. get the G50/31 from Porsche.
Old 09-07-2009, 08:47 PM
  #22  
Bill Verburg
Addict
Rennlist Member

 
Bill Verburg's Avatar
 
Join Date: May 2001
Posts: 12,383
Received 572 Likes on 394 Posts
Default

Originally Posted by Speedyellow993
It's sounds like a great upgrade in theory but money poorly spent.

I was hopeing that it was a magic pill.

If it's so expensive, why not just buy a supercharger kit?
It is a magic pill, as to whether it's money poorly spent, that's a personal decision which will depend on you and your useage. I think it was the best money I ever spent.

I've also been in supercharged 993s at track events, they too are very nice
Old 09-07-2009, 08:59 PM
  #23  
Bill Verburg
Addict
Rennlist Member

 
Bill Verburg's Avatar
 
Join Date: May 2001
Posts: 12,383
Received 572 Likes on 394 Posts
Default

Originally Posted by Mike J
As my old chinese martial arts instructor would say "This one no cheap!". I would be curious to see what the cost is with the factory order, and how comparable is it to the $6K-$8K regearing costs? I just sent an email out to Jeff at Sunset, and will post the answer.

Sounds like I need to take a few transmission rebuilding classes and do another DIY...but in this case the parts are the majority of the costs, right?

What is the magic in these gearsets? Are they that hard to machine/manufacture do they are worth $600+ per gear?

Cheers,

Mike
the /3x have many advantages for performance usage over /2x
1) mainshaft w/ separate 1 and 2 gear sets, /2x have either fixed 2 or fixed 1 & 2, the tall std 1 in the /3x is very nice for pit out
2) all /3x come w/ a Motosports 40/65 lsd which is much more robust than the lsd that is optional in /2x
3) steel syncros are use on some gears in /31 more in /32 or /30 which also add stronger shift forks a large additional cost in the /32 and 30 is all the steel syncros, 2nd alone is a $2k assembly
4) GT gears can also be used in place of Getrag parts, they are still going to run ~$1k a gear set.
Old 09-07-2009, 10:36 PM
  #24  
Cactus
Noodle Jr.
Rennlist Member
 
Cactus's Avatar
 
Join Date: Jan 2006
Location: Mountville, PA
Posts: 9,919
Received 231 Likes on 147 Posts
Default

So let's say the trans is $8800. How much for the RS clutch/LWF and all associated parts? Then labor if you can't do it yourself? Then what can you sell the stock trans for?
Old 09-07-2009, 10:56 PM
  #25  
timothymoffat
Rennlist Member
 
timothymoffat's Avatar
 
Join Date: Apr 2006
Location: Rainforest (Vancouver, BC)
Posts: 7,584
Received 1,043 Likes on 470 Posts
Default

I think the $8800 was on exchange. You pay for the new box PLUS core charge. Core refunded upon returning your existing box, assuming it's not junk.

If I were to guess, which is all I can do, I'd bet you'd be into it for $13Kish with RS clutch/LWF in the car. And that's only if the gearbox price hasn't shot up too much.

Anyone wanna donate to the "Tim Wants a New Box" fund?
Old 09-07-2009, 11:15 PM
  #26  
Cactus
Noodle Jr.
Rennlist Member
 
Cactus's Avatar
 
Join Date: Jan 2006
Location: Mountville, PA
Posts: 9,919
Received 231 Likes on 147 Posts
Default

Oh yeah duh on the core exchange. I think we all want a new box
Old 09-07-2009, 11:19 PM
  #27  
timothymoffat
Rennlist Member
 
timothymoffat's Avatar
 
Join Date: Apr 2006
Location: Rainforest (Vancouver, BC)
Posts: 7,584
Received 1,043 Likes on 470 Posts
Default

Originally Posted by Cactus
I think we all want a new box
Maybe just a different one now and then.
Old 09-08-2009, 12:24 AM
  #28  
Speedyellow993
RL Community Team
Rennlist Member
Thread Starter
 
Speedyellow993's Avatar
 
Join Date: Jun 2008
Location: Toronto
Posts: 1,989
Likes: 0
Received 4 Likes on 4 Posts
Default I had to get a line of credit to pay my Rennlist Member ship !!!!!

Originally Posted by Rinty
I have thought about the re gear a lot, and I think there are three main factors that bear on the decision:

Resale. Cost recovery is probably going to be nil.

The owner's net worth.

The level of enthusiasm of the owner.

For a high net worth owner, the $10,000 cost will have zero impact on his bottom line (for liquid assets). The challenge for those owners having lower net worths, where, say, the cost amounts to x percent of their bottom line, is to quantify the level of their enthusiasm in dollar terms.

$8800....WOW !!! For that money I can have my 996TT running 650-700hp.

But I do love the 993 still.

Rinty.....I'm with you on this one. I had to get a line of credit to pay my Rennlist Member ship !!!!! lol !
Old 09-08-2009, 01:27 AM
  #29  
Tom W
Addict
Rennlist Member

 
Tom W's Avatar
 
Join Date: Jul 2001
Location: Santa Rosa, CA
Posts: 4,483
Likes: 0
Received 1 Like on 1 Post
Default

I added a /32 to my track car. It was about $15k to have it shipped from Germany, core charge, and the transmission itself. Labor to install was extra. I know it was worth the cost for my track car.

I had my 993's transmission re-geared years ago when it failed. Replacing the main shaft to a splined 1st only, changing 2-5 and moving the stock 5th to 6th (keeping the brass synchros and not going to more expensive steel) and adding the RS LWF and clutch was about $11k. It made the car a lot more fun. You will not recoup the cost when you sell the car.
Old 09-08-2009, 09:06 AM
  #30  
Bill Verburg
Addict
Rennlist Member

 
Bill Verburg's Avatar
 
Join Date: May 2001
Posts: 12,383
Received 572 Likes on 394 Posts
Default

The /32 is more expensive than the /31 because it has more of the good stuff inside, more gears w/ steel syncros and steel shift forks. The steel synros are not only stronger but have a more radical angle to them making shifts more positive, it feels almost as if the gears are sucked into mesh

ratios are also somewhat lower & closer together in 5 & 6


Quick Reply: G50/31 gearbox enhancement



All times are GMT -3. The time now is 08:28 PM.