Fill in the blank: My G56 broke in _____ gear - Competition Diesel.Com

Allmaras Diesel · 01-20-2012, 06:25 PM

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.

blackcoal · 01-20-2012, 06:31 PM

my nv 4500 broke in 5th gear

took the splines of the gear and shaft

*Big Blue24* · 01-20-2012, 11:43 PM

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......

Allmaras Diesel · 01-21-2012, 10:51 AM

Nobody's broke a G56?

*TMONEYDIESEL* · 01-21-2012, 10:53 AM

We use a aftermarket steel case and stronger internals.

*TravisG* · 01-21-2012, 11:15 AM

Fill in the blank: My G56 broke in WHAT gear?

Did I get the question right?

therabbittree · 01-24-2012, 04:27 PM

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

M_Thomas07 · 01-24-2012, 04:34 PM

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...

apocalypse1812 · 01-24-2012, 04:36 PM

Quote:

Originally Posted by TMONEYDIESEL

We use a aftermarket steel case and stronger internals.

Where'd you get that?

CIDraughn · 01-24-2012, 08:04 PM

^x2?

Oh and by the way to the OP, I have seen one break in 6th gear.

Allmaras Diesel · 01-24-2012, 08:13 PM

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

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.

apocalypse1812 · 01-24-2012, 08:23 PM

What is your fix?

phale · 01-24-2012, 09:25 PM

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.

CIDraughn · 01-24-2012, 09:44 PM

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.

I wouldn't say G56's are reliable behind a modified motor by any means. More details on your fix please.

2007 5.9 · 01-24-2012, 11:06 PM

Sled pulling truck...broke ALL gears...2nd high 10ft out of gate.

G56

*Bobcat698* · 01-25-2012, 04:18 AM

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!

therabbittree · 01-25-2012, 06:00 AM

yeah if you have special parts let us know, I'd definately be interested as it shifts like butter and strength would be awesome...

rolncoal82 · 01-25-2012, 08:03 AM

4 gear and main shaft on
Mine

98puller · 01-25-2012, 07:36 PM

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.

dvst8r · 01-26-2012, 10:03 AM

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.

01-20-2012, 06:25 PM	#1
Allmaras Diesel Name: Allmaras Diesel Title: Green Behind the Ears Status: Not Here Join Date: Mar 2011 Member`s Gallery Posts: 47	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.

01-20-2012, 06:31 PM	#2
blackcoal Name: blackcoal Title: Too Much Time Status: Not Here Join Date: Jan 2011 Location: Goshen, IN Member`s Gallery Posts: 515	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

01-20-2012, 11:43 PM	#3
Big Blue24 Name: Big Blue24 Title: Comp Diesel Sponsor Status: Not Here Join Date: Jan 2008 Location: Cedar City, UT Member`s Gallery Posts: 6,310	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

01-21-2012, 10:53 AM	#5
TMONEYDIESEL Name: TMONEYDIESEL Title: Comp Diesel Sponsor Status: Not Here Join Date: Jan 2007 Member`s Gallery Posts: 8,706	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

01-21-2012, 11:15 AM	#6
TravisG Name: TravisG Title: #THEREALLAVONMILLER Status: Not Here Join Date: Aug 2006 Location: Colorado Member`s Gallery Posts: 6,799	Fill in the blank: My G56 broke in WHAT gear? Did I get the question right? __________________ R.I.P. Dex Brown

01-21-2012, 10:51 AM	#4
Allmaras Diesel Name: Allmaras Diesel Title: Green Behind the Ears Status: Not Here Join Date: Mar 2011 Member`s Gallery Posts: 47	Nobody's broke a G56?

01-24-2012, 04:27 PM	#7
therabbittree Name: therabbittree Title: Too Much Time Status: Not Here Join Date: Nov 2007 Location: LaGrangeville, NY Member`s Gallery Posts: 529	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 __________________ 2000 Excursion XLT 4x4, P Pump 12V, G56 6 spd, SB FE clutch, gauges, hx35, boss 9.2' DXT Stainless NGE http://www.turbodieselregister.com/f...sion-redo.html http://picasaweb.google.com/therabbittree/Excursion02# Last edited by therabbittree; 01-24-2012 at 04:31 PM.

01-24-2012, 08:04 PM	#10
CIDraughn Name: CIDraughn Title: Too Much Time Status: Not Here Join Date: Sep 2010 Location: NW North Carolina Member`s Gallery Posts: 291	^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.

01-24-2012, 08:23 PM	#12
apocalypse1812 Name: apocalypse1812 Title: Nailed It! Status: Not Here Join Date: Nov 2006 Location: Odessa, Tx Member`s Gallery Posts: 6,180	What is your fix?

01-24-2012, 09:25 PM	#13
phale Name: phale Title: Too Much Time Status: Not Here Join Date: Dec 2006 Member`s Gallery Posts: 935	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

01-24-2012, 11:06 PM	#15
2007 5.9 Name: 2007 5.9 Title: West Coast Dyno Modifier Status: Not Here Join Date: Jan 2008 Location: NorCal Member`s Gallery Posts: 1,927	Sled pulling truck...broke ALL gears...2nd high 10ft out of gate. G56 __________________ 2007 5.9 Dodge Ram Les Szmidt Silver Bullet Tuning silverbullettuning@gmail.com www.youtube.com/ljszmidt Incompatible Browser \| Facebook

01-25-2012, 04:18 AM	#16
Bobcat698 Name: Bobcat698 Title: Pure Diesel Power Status: Not Here Join Date: Apr 2006 Location: Marshfield, WI Member`s Gallery Posts: 2,229	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! __________________ Pure Diesel Power 715-254-1833

01-25-2012, 06:00 AM	#17
therabbittree Name: therabbittree Title: Too Much Time Status: Not Here Join Date: Nov 2007 Location: LaGrangeville, NY Member`s Gallery Posts: 529	yeah if you have special parts let us know, I'd definately be interested as it shifts like butter and strength would be awesome... __________________ 2000 Excursion XLT 4x4, P Pump 12V, G56 6 spd, SB FE clutch, gauges, hx35, boss 9.2' DXT Stainless NGE http://www.turbodieselregister.com/f...sion-redo.html http://picasaweb.google.com/therabbittree/Excursion02#

01-25-2012, 08:03 AM	#18
rolncoal82 Name: rolncoal82 Title: Too Much Time Status: Not Here Join Date: Oct 2009 Location: Jonesborough Tennessee Member`s Gallery Posts: 279	4 gear and main shaft on Mine

01-25-2012, 07:36 PM	#19
98puller Name: 98puller Title: Too Much Time Status: Not Here Join Date: Jan 2011 Location: IN Member`s Gallery Posts: 266	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.