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01-20-2012, 06:25 PM
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#1
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Name: Allmaras Diesel
Title: Green Behind the Ears
Status: Not Here
Join Date: Mar 2011
Member`s Gallery
Posts: 47
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Fill in the blank: My G56 broke in _____ gear
If you broke a G56 please post what gear it was in when it went and which gears chipped, shaft snapped, where the case broke.
Fix in the works. Looking for a better overall picture of how these fail before going off local failures only.
Thanks.
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01-20-2012, 06:31 PM
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#2
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Name: blackcoal
Title: Too Much Time
Status: Not Here
Join Date: Jan 2011
Location: Goshen, IN
Member`s Gallery
Posts: 515
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my nv 4500 broke in 5th gear
took the splines of the gear and shaft
__________________
1999 2500 QCSB, P-Pump 24valve, Hamilton Cams, South Bend Clutch, and CPP
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01-20-2012, 11:43 PM
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#3
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Name: Big Blue24
Title: Comp Diesel Sponsor
Status: Not Here
Join Date: Jan 2008
Location: Cedar City, UT
Member`s Gallery
Posts: 6,310
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My 47rh broke in all forward gears, it burned up the forward clutch pack because I experimented with the clutch pack design.
My fix was to go back to the stock design..........
Oh wait, this is a Mercedes transmission thread...... In that case, the Nag1 automatic transmission in my Jeep Grand Cherokee Diesel has never had a problem in any gear......
__________________
95' 2wd Junker Drag Truck
1502 HP Fuel-Only 12mm P7100 Pump
SXE 472 over GTX55 116mm
OEM 12v Block
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01-21-2012, 10:51 AM
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#4
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Name: Allmaras Diesel
Title: Green Behind the Ears
Status: Not Here
Join Date: Mar 2011
Member`s Gallery
Posts: 47
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Nobody's broke a G56?
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01-21-2012, 10:53 AM
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#5
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Name: TMONEYDIESEL
Title: Comp Diesel Sponsor
Status: Not Here
Join Date: Jan 2007
Member`s Gallery
Posts: 8,706
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We use a aftermarket steel case and stronger internals.
__________________
MANNING MOTORSPORTS
Office +1 (512) 217-7644
YOUR SOURCE FOR:
Camshafts
Pushrods
Valve springs
Custom Turbos
Exhaust Manifolds
Carrillo Connecting rods
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01-21-2012, 11:15 AM
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#6
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Name: TravisG
Title: #THEREALLAVONMILLER
Status: Not Here
Join Date: Aug 2006
Location: Colorado
Member`s Gallery
Posts: 6,799
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Fill in the blank: My G56 broke in WHAT gear?
Did I get the question right?
__________________
R.I.P. Dex Brown
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01-24-2012, 04:27 PM
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#7
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Name: therabbittree
Title: Too Much Time
Status: Not Here
Join Date: Nov 2007
Location: LaGrangeville, NY
Member`s Gallery
Posts: 529
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Who makes a aftermarket G56 STEEL Case and Gears? Only person I know of doing G56 stuff, case supports, cyro gears etc is Lazarsmith in TX
Transmission
as for What gear are they breaking I've read about 3rd gear breaking in the g56.. I haven't broken mine yet.
Thanks,
deo
Last edited by therabbittree; 01-24-2012 at 04:31 PM.
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01-24-2012, 04:34 PM
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#8
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Name: M_Thomas07
Title: CompDEX
Status: Not Here
Join Date: Aug 2010
Location: Hillsboro, OR
Member`s Gallery
Posts: 1,315
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I'm thinking my 3rd gear is going to break sooner than later. Gotta nice gear whine, like the face of the teeth are chipped up...
__________________
Mitch Thomas
08 2500 Mega Cab, G56
R.I.P. DEX
Quote:
Originally Posted by jponder
When you are secure in your own Identity you stop labeling things and people and just accept them.
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01-24-2012, 04:36 PM
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#9
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Name: apocalypse1812
Title: Nailed It!
Status: Not Here
Join Date: Nov 2006
Location: Odessa, Tx
Member`s Gallery
Posts: 6,180
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Quote:
Originally Posted by TMONEYDIESEL
We use a aftermarket steel case and stronger internals.
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Where'd you get that?
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01-24-2012, 08:04 PM
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#10
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Name: CIDraughn
Title: Too Much Time
Status: Not Here
Join Date: Sep 2010
Location: NW North Carolina
Member`s Gallery
Posts: 291
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^x2?
Oh and by the way to the OP, I have seen one break in 6th gear.
__________________
06 Ram 2500 5.9 Cummings. S475 with Silencer Ring Delete Kit. Stage 3 Tow Mirrors. A zillion hp/2 zillion tq. Dyno Proven.
Last edited by CIDraughn; 01-24-2012 at 08:05 PM.
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01-24-2012, 08:13 PM
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#11
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Name: Allmaras Diesel
Title: Green Behind the Ears
Status: Not Here
Join Date: Mar 2011
Member`s Gallery
Posts: 47
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Quote:
Originally Posted by therabbittree
Who makes a aftermarket G56 STEEL Case and Gears? Only person I know of doing G56 stuff, case supports, cyro gears etc is Lazarsmith in TX
Transmission
as for What gear are they breaking I've read about 3rd gear breaking in the g56.. I haven't broken mine yet.
Thanks,
deo
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There's a much better fix possible then what's on the market now. If this thread is representative of G56 reliability then there is no market for the parts I was working on.
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01-24-2012, 08:23 PM
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#12
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Name: apocalypse1812
Title: Nailed It!
Status: Not Here
Join Date: Nov 2006
Location: Odessa, Tx
Member`s Gallery
Posts: 6,180
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What is your fix?
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01-24-2012, 09:25 PM
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#13
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Name: phale
Title: Too Much Time
Status: Not Here
Join Date: Dec 2006
Member`s Gallery
Posts: 935
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I have seen two different trucks break 5 G56's total. Every time it was 2nd high with a sled behind it. Countershaft was gone and direct was the only gear left.
__________________
ANARCHY DIESEL TUNING
EFI Live Beta Tester Cummins/Duramax tuning
423-506-7427
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01-24-2012, 09:44 PM
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#14
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Name: CIDraughn
Title: Too Much Time
Status: Not Here
Join Date: Sep 2010
Location: NW North Carolina
Member`s Gallery
Posts: 291
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Quote:
Originally Posted by Allmaras Diesel
There's a much better fix possible then what's on the market now. If this thread is representative of G56 reliability then there is no market for the parts I was working on.
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I wouldn't say G56's are reliable behind a modified motor by any means. More details on your fix please.
__________________
06 Ram 2500 5.9 Cummings. S475 with Silencer Ring Delete Kit. Stage 3 Tow Mirrors. A zillion hp/2 zillion tq. Dyno Proven.
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01-24-2012, 11:06 PM
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#15
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Name: 2007 5.9
Title: West Coast Dyno Modifier
Status: Not Here
Join Date: Jan 2008
Location: NorCal
Member`s Gallery
Posts: 1,927
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Sled pulling truck...broke ALL gears...2nd high 10ft out of gate.
G56
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01-25-2012, 04:18 AM
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#16
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Name: Bobcat698
Title: Pure Diesel Power
Status: Not Here
Join Date: Apr 2006
Location: Marshfield, WI
Member`s Gallery
Posts: 2,229
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I chipped a few teeth off of 6th gear with heavy towing. There is a market for your parts!
The G56 is useless behind a high hp engine. I will help you sell them too!
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01-25-2012, 06:00 AM
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#17
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Name: therabbittree
Title: Too Much Time
Status: Not Here
Join Date: Nov 2007
Location: LaGrangeville, NY
Member`s Gallery
Posts: 529
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yeah if you have special parts let us know, I'd definately be interested as it shifts like butter and strength would be awesome...
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01-25-2012, 08:03 AM
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#18
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Name: rolncoal82
Title: Too Much Time
Status: Not Here
Join Date: Oct 2009
Location: Jonesborough Tennessee
Member`s Gallery
Posts: 279
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4 gear and main shaft on
Mine
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01-25-2012, 07:36 PM
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#19
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Name: 98puller
Title: Too Much Time
Status: Not Here
Join Date: Jan 2011
Location: IN
Member`s Gallery
Posts: 266
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First one I broke was a loss of 4th. I was successful driving/ pulling it for several more months. Then 6th went and it took the side of the case out with it. Second one I broke I lost every gear but 5th. Never really had any breakage pulling with it just drag racing and hard shifting. I pulled 5th in low.
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01-26-2012, 10:03 AM
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#20
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Name: dvst8r
Title: Unobtainium
Status: Not Here
Join Date: Feb 2008
Location: Airdrie, AB
Member`s Gallery
Posts: 2,053
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3rd gear, with a hard 2 - 3 shift on the maiden voyage to test the new twins (about 500hp setup on 22.5 semi wheels and tires): Clutch held, tires held, 3rd did not. Haven't pulled it open to see if it just shredded the teeth off, or if it split the gear or what. All other gears worked just no 3rd, and you could hear pieces of what I assume to be 3rd rattling around.
I too am interested in this steel case.
__________________
Brett
Assistant to the Manager, Ragged Edge Racing.
Quote:
Originally Posted by RonA
If i had some ham, I could have ham and eggs, if i had some eggs.
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