Duramax Diesels Forum Truck of the Week
  #1  
Old 12-07-2016, 07:43 PM
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hntngkd hntngkd is offline
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Default ZF6 input shaft

Well finally got to drive the truck today, I did 2 good 6th gear pulls at 70 mph. The tires broke loose a little bit and I learned that I need a bigger boost gauge. Slowed down at a stop sign went to take off and it was like the clutch wasn't pushed in at all, it did not want to go into gear. But you can hear the clutch chatter when you push it in. Im thinking I twisted the input shaft so im looking for some ideas on where to get a billet one or somewhere that could make one. Ive heard cryo-treating helps but I don't know that it would help enough. It is an 8000lb truck after all. Any input is greatly appreciated.
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2006 "LLY" ECLB DRW, DEAD 5/3/2015.... Alive again..... 11/30/16
Fingers cast 15.5:1, R&R rods, Callies billet crank internally balanced, Wagler AF stage 2 Cam, Main Girdle, Billet Mains
Wagler Pushrods, Valve Springs, Ported LBZ heads
SBDDD 3600lb sintered iron
HSP Compounds SXE-371/S485 V2 by Forced Inductions, Profab castflow manifolds, Turbosmart Hyper-gate HP45, Turbosmart Race port BOV and controller, Mishimoto Intercooler
Exergy 250% injectors, Dual Fuelers, Fuelab 200
Danville tuning
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  #2  
Old 12-07-2016, 08:28 PM
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The pilot bearing probably fell into the crank shaft. It's a south bend problem. Unless it's one of the newest style that I think they FINALLY updated to have a lip holding the bearing in. It only took me 3 years of arguing with them about that problem.

I've been through this a number of times. It would do something similar as well. All of mine since have been tig into place.

The inputs are tough, I've seen some hard abuse and they keep on going. I'm not foreseeing that being your issue at all. I'm betting clutch related for sure.
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  #3  
Old 12-07-2016, 08:45 PM
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zf>allison zf>allison is offline
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If you put it in gear while it's not running and start it with the clutch in what does it do? Disc could maybe be stuck to the flywheel as well.
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04.5 single cab lly zf6 barely not stock.(the jalopy)
05 single cab lly zf6
Arp studs, welded water pump, 100 overs, dual fuelers, valair 1000 hp triple disc, danville efi live, fass 150, custom single s400 kit,
serious weight reduction
285/60/17 toyo proxes on lmm wheels
Down on 2 leaves, t bolts gone.

best
11.28 at 126 mph, 1.8 60 foot
dynoed 743 hp 5340 raceweight
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  #4  
Old 12-07-2016, 09:04 PM
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Quote:
Originally Posted by diesel-max View Post
The pilot bearing probably fell into the crank shaft. It's a south bend problem. Unless it's one of the newest style that I think they FINALLY updated to have a lip holding the bearing in. It only took me 3 years of arguing with them about that problem.

I've been through this a number of times. It would do something similar as well. All of mine since have been tig into place.

The inputs are tough, I've seen some hard abuse and they keep on going. I'm not foreseeing that being your issue at all. I'm betting clutch related for sure.
Ill have to check that out when I pull the trans. Why would that make it hard to get into gear though?
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2006 "LLY" ECLB DRW, DEAD 5/3/2015.... Alive again..... 11/30/16
Fingers cast 15.5:1, R&R rods, Callies billet crank internally balanced, Wagler AF stage 2 Cam, Main Girdle, Billet Mains
Wagler Pushrods, Valve Springs, Ported LBZ heads
SBDDD 3600lb sintered iron
HSP Compounds SXE-371/S485 V2 by Forced Inductions, Profab castflow manifolds, Turbosmart Hyper-gate HP45, Turbosmart Race port BOV and controller, Mishimoto Intercooler
Exergy 250% injectors, Dual Fuelers, Fuelab 200
Danville tuning
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  #5  
Old 12-07-2016, 09:07 PM
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Quote:
Originally Posted by zf>allison View Post
If you put it in gear while it's not running and start it with the clutch in what does it do? Disc could maybe be stuck to the flywheel as well.
It starts up fine doesn't lurch forward or anything that I noticed but it does make a whining sound as soon as I get it into gear. Sounds ridiculous like somebody just started a giant shop vac. I was sitting at a light trying to get into gear and its so lloud the guy next to me thought I was reving my truck at him.
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2006 "LLY" ECLB DRW, DEAD 5/3/2015.... Alive again..... 11/30/16
Fingers cast 15.5:1, R&R rods, Callies billet crank internally balanced, Wagler AF stage 2 Cam, Main Girdle, Billet Mains
Wagler Pushrods, Valve Springs, Ported LBZ heads
SBDDD 3600lb sintered iron
HSP Compounds SXE-371/S485 V2 by Forced Inductions, Profab castflow manifolds, Turbosmart Hyper-gate HP45, Turbosmart Race port BOV and controller, Mishimoto Intercooler
Exergy 250% injectors, Dual Fuelers, Fuelab 200
Danville tuning
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  #6  
Old 12-07-2016, 09:10 PM
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2006 "LLY" ECLB DRW, DEAD 5/3/2015.... Alive again..... 11/30/16
Fingers cast 15.5:1, R&R rods, Callies billet crank internally balanced, Wagler AF stage 2 Cam, Main Girdle, Billet Mains
Wagler Pushrods, Valve Springs, Ported LBZ heads
SBDDD 3600lb sintered iron
HSP Compounds SXE-371/S485 V2 by Forced Inductions, Profab castflow manifolds, Turbosmart Hyper-gate HP45, Turbosmart Race port BOV and controller, Mishimoto Intercooler
Exergy 250% injectors, Dual Fuelers, Fuelab 200
Danville tuning
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  #7  
Old 12-07-2016, 09:21 PM
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I would think an input shaft would vibrate in neutral with the clutch engaged because it would be spinning it. I put a clutch disc in backward and it made alot of strange racket but didn't hold power. Seems like when your synchro starts engaging and spinning the other shaft in the trans it makes the noise. I'm interested in knowing what happened.
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04.5 single cab lly zf6 barely not stock.(the jalopy)
05 single cab lly zf6
Arp studs, welded water pump, 100 overs, dual fuelers, valair 1000 hp triple disc, danville efi live, fass 150, custom single s400 kit,
serious weight reduction
285/60/17 toyo proxes on lmm wheels
Down on 2 leaves, t bolts gone.

best
11.28 at 126 mph, 1.8 60 foot
dynoed 743 hp 5340 raceweight
Instagram-636zf6
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  #8  
Old 12-07-2016, 09:23 PM
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zf>allison zf>allison is offline
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Does it make that noise when you put in in every gear?
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04.5 single cab lly zf6 barely not stock.(the jalopy)
05 single cab lly zf6
Arp studs, welded water pump, 100 overs, dual fuelers, valair 1000 hp triple disc, danville efi live, fass 150, custom single s400 kit,
serious weight reduction
285/60/17 toyo proxes on lmm wheels
Down on 2 leaves, t bolts gone.

best
11.28 at 126 mph, 1.8 60 foot
dynoed 743 hp 5340 raceweight
Instagram-636zf6
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  #9  
Old 12-08-2016, 05:24 PM
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hntngkd hntngkd is offline
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Yes it does

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2006 "LLY" ECLB DRW, DEAD 5/3/2015.... Alive again..... 11/30/16
Fingers cast 15.5:1, R&R rods, Callies billet crank internally balanced, Wagler AF stage 2 Cam, Main Girdle, Billet Mains
Wagler Pushrods, Valve Springs, Ported LBZ heads
SBDDD 3600lb sintered iron
HSP Compounds SXE-371/S485 V2 by Forced Inductions, Profab castflow manifolds, Turbosmart Hyper-gate HP45, Turbosmart Race port BOV and controller, Mishimoto Intercooler
Exergy 250% injectors, Dual Fuelers, Fuelab 200
Danville tuning
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  #10  
Old 12-08-2016, 06:40 PM
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zf>allison zf>allison is offline
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It is strange because if you are on flat ground and hold the shifter against a low gear hard like that usually the truck will try to roll, I had a slave cylinder go out more than once in my old 6.2 turbo half ton and that's how I got it home. Held it against gear and it got rolling enough to pop into gear. Hell on the synchros though.
Try putting the t case into neutral and see if the trans will go into gear. These transmissions are tough but that's alot of power and weight you got. I hope it's something simple.
__________________
04.5 single cab lly zf6 barely not stock.(the jalopy)
05 single cab lly zf6
Arp studs, welded water pump, 100 overs, dual fuelers, valair 1000 hp triple disc, danville efi live, fass 150, custom single s400 kit,
serious weight reduction
285/60/17 toyo proxes on lmm wheels
Down on 2 leaves, t bolts gone.

best
11.28 at 126 mph, 1.8 60 foot
dynoed 743 hp 5340 raceweight
Instagram-636zf6
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  #11  
Old 12-16-2016, 12:05 PM
CarolinaHD CarolinaHD is offline
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You ever get time to look into this?
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  #12  
Old 05-04-2017, 03:19 AM
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hntngkd hntngkd is offline
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Finally got the truck apart. Wasnt exactly what i thought it was which is good. South bend had accidentally put the wrong hubs on the discs so the input shaft wasnt fully engaged on the splines. I took it to UCC with me and gave it to the guys at the south bend booth. They fixed it and shipped it back to me free of charge.

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2006 "LLY" ECLB DRW, DEAD 5/3/2015.... Alive again..... 11/30/16
Fingers cast 15.5:1, R&R rods, Callies billet crank internally balanced, Wagler AF stage 2 Cam, Main Girdle, Billet Mains
Wagler Pushrods, Valve Springs, Ported LBZ heads
SBDDD 3600lb sintered iron
HSP Compounds SXE-371/S485 V2 by Forced Inductions, Profab castflow manifolds, Turbosmart Hyper-gate HP45, Turbosmart Race port BOV and controller, Mishimoto Intercooler
Exergy 250% injectors, Dual Fuelers, Fuelab 200
Danville tuning
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  #13  
Old 05-04-2017, 05:08 AM
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zf>allison zf>allison is offline
you never had your car.
 
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I had a dual disc do the same thing but it's because I put the front disc in backwards.
__________________
04.5 single cab lly zf6 barely not stock.(the jalopy)
05 single cab lly zf6
Arp studs, welded water pump, 100 overs, dual fuelers, valair 1000 hp triple disc, danville efi live, fass 150, custom single s400 kit,
serious weight reduction
285/60/17 toyo proxes on lmm wheels
Down on 2 leaves, t bolts gone.

best
11.28 at 126 mph, 1.8 60 foot
dynoed 743 hp 5340 raceweight
Instagram-636zf6
Reply With Quote
  #14  
Old 05-04-2017, 08:05 AM
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hntngkd hntngkd is offline
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Quote:
Originally Posted by zf>allison View Post
I had a dual disc do the same thing but it's because I put the front disc in backwards.
that's almost what I thought I had done at first but I don't think I could have put it in backwards if I wanted to. The all pilot into each other.
__________________
2006 "LLY" ECLB DRW, DEAD 5/3/2015.... Alive again..... 11/30/16
Fingers cast 15.5:1, R&R rods, Callies billet crank internally balanced, Wagler AF stage 2 Cam, Main Girdle, Billet Mains
Wagler Pushrods, Valve Springs, Ported LBZ heads
SBDDD 3600lb sintered iron
HSP Compounds SXE-371/S485 V2 by Forced Inductions, Profab castflow manifolds, Turbosmart Hyper-gate HP45, Turbosmart Race port BOV and controller, Mishimoto Intercooler
Exergy 250% injectors, Dual Fuelers, Fuelab 200
Danville tuning
Reply With Quote
  #15  
Old 05-04-2017, 10:30 AM
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zf>allison zf>allison is offline
you never had your car.
 
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Quote:
Originally Posted by hntngkd View Post
that's almost what I thought I had done at first but I don't think I could have put it in backwards if I wanted to. The all pilot into each other.
That's how mine was to but the front disc the hub stuck backwards off the disc. So when I turned it around it was sticking forward and the input couldn't reach it all the way and I had about the same damage as you. They hooked me up pretty good for it being my fault.
__________________
04.5 single cab lly zf6 barely not stock.(the jalopy)
05 single cab lly zf6
Arp studs, welded water pump, 100 overs, dual fuelers, valair 1000 hp triple disc, danville efi live, fass 150, custom single s400 kit,
serious weight reduction
285/60/17 toyo proxes on lmm wheels
Down on 2 leaves, t bolts gone.

best
11.28 at 126 mph, 1.8 60 foot
dynoed 743 hp 5340 raceweight
Instagram-636zf6
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