haha power is something i dont have much off.
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| 6.5s and broken cases in a sierra https://auszookers.com/forum/viewtopic.php?f=5&t=14566 |
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| Author: | shep [ Wed Aug 25, 2010 10:27 am ] |
| Post subject: | 6.5s and broken cases in a sierra |
i got bogged tonight towing my boat up a beach and to get out i started dumping the clutch at 5000rpm in 3rd low and it got me thinking about broken trans cases. i have no case reinforcing and standard mounts and have been flogging my trans case for a bit over 2 years and have only broken 2 mounts. you would think that dumping the clutch with 1600kg attached to the back of the car would show up any weakness so i am starting to think that the cases that have broken were maybe caused by gear wind up. does that make any sense? has anyone had a case fail on a lowish traction surface? |
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| Author: | Fatzook [ Wed Aug 25, 2010 10:33 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
shep wrote: i got bogged tonight towing my boat up a beach and to get out i started dumping the clutch
at 5000rpm in 3rd low and it got me thinking about broken trans cases. i have no case reinforcing and standard mounts and have been flogging my trans case for a bit over 2 years and have only broken 2 mounts. you would think that dumping the clutch with 1600kg attached to the back of the car would show up any weakness so i am starting to think that the cases that have broken were maybe caused by gear wind up. does that make any sense? has anyone had a case fail on a lowish traction surface? Power is another contributing factor. |
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| Author: | shep [ Wed Aug 25, 2010 10:43 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
haha power is something i dont have much off.
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| Author: | MrRocky [ Wed Aug 25, 2010 10:43 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
havent broken mine in 4 yrs of hard wheeling and abuse every w/end the 1.6 16v might help it along a little though. well see... |
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| Author: | stockman [ Wed Aug 25, 2010 10:59 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
Just to make this thread useful down the track, can someone explane gear wind up and what causes it please. |
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| Author: | ajsr [ Wed Aug 25, 2010 11:11 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
stockman wrote: Just to make this thread useful down the track, can someone explane gear wind up and what causes it please.
stick your zook in 4wd on dry concrete and air down the tyres. now pull a doughnut, thats windup at its best |
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| Author: | Zachius [ Wed Aug 25, 2010 11:17 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
I think a lot of the complaints about broken mounts has to do with inferior aftermarket mounts. The factory Suzuki ones seem to be much stronger. |
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| Author: | JrZook [ Wed Aug 25, 2010 11:53 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
Zachius wrote: I think a lot of the complaints about broken mounts has to do with inferior aftermarket mounts. The factory Suzuki ones seem to be much stronger.
So very true!!! The aftermarket mounts for them are shait! |
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| Author: | Fatzook [ Wed Aug 25, 2010 12:01 pm ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
Zachius wrote: I think a lot of the complaints about broken mounts has to do with inferior aftermarket mounts. The factory Suzuki ones seem to be much stronger.
Yeah that could be true. But I used genuine mounts in my maruti, with 6.5 gears, and 36's, and I still blew mounts quite easily. I guess there would be alot of contributing factors like driving style, type of terrain, type and size of tyres etc. So putting it down to only one thing; like wind-up; may be only half the story. 
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| Author: | ajsr [ Wed Aug 25, 2010 12:11 pm ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
JrZook wrote: Zachius wrote: I think a lot of the complaints about broken mounts has to do with inferior aftermarket mounts. The factory Suzuki ones seem to be much stronger. So very true!!! The aftermarket mounts for them are shait! Ive never blown a mount since swapping to aftermarket solid mounts,before that I did 5 or 6 new stockers |
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| Author: | lump_a_charcoal [ Wed Aug 25, 2010 6:41 pm ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
Chris had his 6.5 case split in two just driving on a dirt road at about 30kph... |
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| Author: | shep [ Wed Aug 25, 2010 10:08 pm ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
lump_a_charcoal wrote: Chris had his 6.5 case split in two just driving on a dirt road at about 30kph...
was it locked and driving in 4wd? |
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| Author: | lump_a_charcoal [ Wed Aug 25, 2010 10:57 pm ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
Pretty sure it was unlocked in 2wd. Paging kryzmac... |
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| Author: | BlueSuzy [ Wed Aug 25, 2010 11:06 pm ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
i gave mine a hard time(1yr?), then i added a roctoyring just to insure the gears stay in the box.. |
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| Author: | JrZook [ Wed Aug 25, 2010 11:40 pm ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
ajsr wrote: JrZook wrote: Zachius wrote: I think a lot of the complaints about broken mounts has to do with inferior aftermarket mounts. The factory Suzuki ones seem to be much stronger. So very true!!! The aftermarket mounts for them are shait! Ive never blown a mount since swapping to aftermarket solid mounts,before that I did 5 or 6 new stockers You are running fairly large treads on your rig tho. All I'm saying is when I just got my rig on the road with the 4.9's and 30's I let the 1.6 just idle up a descent hill (minimal throttle input, max 1k rpm) and bang the brand new aftermarket mount burst (single side). The rubber just separated from the metal. Replaced this for a s/hand genuine mount then went out on a few other trips and broke the other two aftermarket mounts!! Same issue, rubber separating from the metal. The old single genuine one is still holding in fine tho. Dan |
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| Author: | shep [ Wed Aug 25, 2010 11:54 pm ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
BlueSuzy wrote: i gave mine a hard time(1yr?), then i added a roctoyring just to insure the gears stay in the box..
haha yeah i am waiting for fatzook to make something
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| Author: | jonno_racing [ Thu Aug 26, 2010 12:22 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
well i have been thinking about pulling mine out and adding some strenght but i might not now.. i am going to get a rocktoy ring.. i also have a set of justcruzin 30mm lifted mounts to fit. |
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| Author: | BlueSuzy [ Thu Aug 26, 2010 12:29 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
shep wrote: BlueSuzy wrote: i gave mine a hard time(1yr?), then i added a roctoyring just to insure the gears stay in the box.. haha yeah i am waiting for fatzook to make something Well thats going to take years.. |
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| Author: | DR_JOSH [ Thu Aug 26, 2010 12:55 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
I'm going to make something up to strengthen it all just as a precaution, not going to give it the chance to break |
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| Author: | Jazzor [ Thu Aug 26, 2010 6:07 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
Any thing wrong with using the body lift blocks like a fellow from here sells in kits?. I made some myself out of body lift stuff. Whats the reason behind continually replacing the rubber ones with more rubber? |
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| Author: | ajsr [ Thu Aug 26, 2010 6:13 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
I use soild alloy one side and poly the other it seems to work fine |
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| Author: | shep [ Thu Aug 26, 2010 6:31 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
Jazzor wrote: Any thing wrong with using the body lift blocks like a fellow from here sells in kits?. I made some myself out of body lift stuff. Whats the reason behind continually replacing the rubber ones with more rubber?
i kept rubber as i wanted the bit that busts to be cheap. i haven't heard of any cases failing with standard mounts. |
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| Author: | Jazzor [ Thu Aug 26, 2010 6:49 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
Cool, that's what i figured out thinking about it some more. Do you want a torn mount and fix that off road or a .. torn something else  . Preferably neither please.
Cheers. |
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| Author: | ajsr [ Thu Aug 26, 2010 7:25 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
shep wrote: Jazzor wrote: Any thing wrong with using the body lift blocks like a fellow from here sells in kits?. I made some myself out of body lift stuff. Whats the reason behind continually replacing the rubber ones with more rubber? i kept rubber as i wanted the bit that busts to be cheap. i haven't heard of any cases failing with standard mounts. replace a couple of stock mounts in a foot of victorian slop/ mud on the side of the track in winter. then tell me how much you like replacing the odd mount 
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| Author: | steak_knife [ Thu Aug 26, 2010 7:28 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
ajsr wrote: replace a couple of stock mounts in a foot of victorian slop/ mud on the side of the track in winter. then tell me how much you like replacing the odd mount It's nice up ere!!! 
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| Author: | shep [ Thu Aug 26, 2010 7:35 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
steak_knife wrote: ajsr wrote: replace a couple of stock mounts in a foot of victorian slop/ mud on the side of the track in winter. then tell me how much you like replacing the odd mount It's nice up ere!!! haha there is a reason i live where i do.
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| Author: | appsie [ Thu Aug 26, 2010 7:41 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
i drove with 6.5s for a year on 31s and rear locker,standard mounts and never broke a mount then added a roctoy ring and some gussets to help with any breakages. another year on and now with twin lockers ive still never broken a mount and drive mostly rocky terrain,hate mud. They looked suss when i bought the zook but i dont abuse my car |
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| Author: | Ben_Sierra [ Thu Aug 26, 2010 7:45 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
ajsr wrote: shep wrote: Jazzor wrote: Any thing wrong with using the body lift blocks like a fellow from here sells in kits?. I made some myself out of body lift stuff. Whats the reason behind continually replacing the rubber ones with more rubber? i kept rubber as i wanted the bit that busts to be cheap. i haven't heard of any cases failing with standard mounts. replace a couple of stock mounts in a foot of victorian slop/ mud on the side of the track in winter. then tell me how much you like replacing the odd mount Rather replace a mount out there than a cracked case.... |
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| Author: | ajsr [ Thu Aug 26, 2010 7:59 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
strange though Ive towed several suzukis out of tracks with blown stock mounts to some where they could replace the mount or bodge something togther but never had to recover a zook with solid mounts and a blown case yet. I guess there is always a first time.
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| Author: | Gwagensteve [ Thu Aug 26, 2010 8:44 am ] |
| Post subject: | Re: 6.5s and broken cases in a sierra |
ajsr wrote: strange though Ive towed several suzukis out of tracks with cheap aftermarket mounts to some where they could replace the mount or bodge something togther but never had to recover a zook with factory, Bridgestone branded mounts
My take is that stock factory mounts will stretch forever (so far the case will heit the floor, even with a 2" BL (really!) and the stock arms will eventually bend. Cheap aftermarket (chinese) mounts will break. Long side arms will bend with transfer gears. Beef stock arms and mounts and the risk is the case could break at the mounting locations. PS 1.0 transfer mounts are better than 1.3. they run 4 mounts rather than three and the case is more resistant to twisting as a result. I've run stock, 1.0 arms with no reinforcing with urethane mounts in my car and they've never bent with 6.5 gears and plenty of hate. You want something to give. You don't want it to be the case. Steve. |
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