Not sure if wrapped separately it would hold the two halves together. This picture and the one comparing A555 to A568 webbing make me think it would work better if wrapped around the case, or some gussets added in between.
Attachment 58145
Not sure if wrapped separately it would hold the two halves together. This picture and the one comparing A555 to A568 webbing make me think it would work better if wrapped around the case, or some gussets added in between.
Attachment 58145
JT
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JT
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Well i couldnt post this on the first day because the site was messing up but:
Most obvious thing that pops out is that the area where the crack starts is a fairly thin V shape of metal:
And the thought that follows would be to fill the V with welded metal:
Next thing that comes to mind is putting a plate across the area that splits:
But there's probably not room on the inside so can we get a better view of the outside?
Dont push the red button.You hear me?
Fixed it! This'll be the third try getting that post to work since you originally posted up your carnage pics..Sounds like an interesting strategy, but no pics
Dont push the red button.You hear me?
Good observations and thoughts!
Anyone else have ideas?
JT
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The area he wants to fill is the area that has more bracing on the older cases.
What about an "L" shaped type of bracket that could connect the diff housing to the main body part of the case?
1. How about a primary cage that goes from the bell housing to the side cover with an adjustment in the middle to allow for preloading. Think a turnbuckle.
2. Half of it goes over the top of the trans and the other half under it.
3. Secondary cage goes from the primary cage back to the differential cover. Possibility of another preloading adjustment if wanted.
4. Half goes over the top and other half under it.
5. If the preload is deemed unnecessary, just bolt it together.
6. Use it in conjunction with the inner plate reinforcement next to the bearing adapter that Vigo drew.
Bryan
86 GLHS #161, 2016 Impala
SDAC National Member, SDAC Buckeye Chapter Member
A man has got to know his limitations.....
Hmm, exoskeleton, full transmission brace that pieces together combining with a scatter shield that supports the bellhousing, preload with turnbuckles. Sounds plagerized from my posts posts a year or 2 ago towards JT. I want his case preloaded end to end too though. Don't create another weak spot. Keep all the gears fully meshed and they will live to their ultimate potential.
Told yah so JT?
It Is good to know that the plate is not enough. Save me heartbreak
Brent GREAT DEPRESSION RACING 1992 Duster 3.0T The Junkyard - MS II, OEM 10:1 -[I] Old - 11.5@125 22psi $90 [U]Stock[/U] 3.0 Junk Motor - 1 bar MAP [/I] 1994 Spirit 3.0T - 11.5@120 20 psi - Daily :eyebrows: Holset He351 -FT600 - 393whp 457ft/lb @18psi 1994 Spirit 3.0T a670 - He341, stock fuel, BEGI. Wife's into kid's project. 1990 Lebaron Coupe 2.2 TI/II non IC, a413 1990 Spirit 3.0 E.S. 41TE -- 1993 Spirit 3.0 E.S. 41TE -- 1994 Duster 3.0 A543 1981 Starlet KP61 Potential driver -- 1981 Starlet KP61 Parts -- 1983 Starlet KP61 Drag 2005 Durango Hemi Limited -- 1998 Dodge 12v 47re. AFC mods, No plate, Mack plug, Boost elbow -- 2011 Dodge 6.7 G56
At least for the hole above the carrier bearing (the one with the locating dowel) is there enough room inside and enough meat in the casting to drill it all the way through and use a stud secured by a nut on the inside? I'm just shooting out ideas; I'm not that educated on transmission internals.
Bryan
86 GLHS #161, 2016 Impala
SDAC National Member, SDAC Buckeye Chapter Member
A man has got to know his limitations.....
Yes, the concern is the webbing is insufficient when the dif is loaded and pushes away from the pinion.
So kind of like the strap that Vigo posted but with a 90° flange to the body? interesting
I like the idea of a cage, however, I'm not sure how a cage from bell housing to end cover keeps the diff from walking out the back? this sounds like it is perpendicular to the diff expulsion force vectors?
I will post pictures of the plate when I finally get the current trans out. I predict that it did its job and the diff is the next weak link not directly related. IMO The helical gears are what pushes it out, not shaft movement.
Good idea and I was looking at that the other night. Maybe weld bosses onto the case and tap those for connecting studs?
JT
SDAC Director
SDAC-Chicago President
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Submit your 1/4 mile times HERE!!
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Bryan
86 GLHS #161, 2016 Impala
SDAC National Member, SDAC Buckeye Chapter Member
A man has got to know his limitations.....
Got it. thinking the secondary cage is more of what is needed?
JT
SDAC Director
SDAC-Chicago President
JOIN SDAC and your local Chapter TODAY! - SUPPORT the CLUB that supports YOUR HOBBY!
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Submit your 1/4 mile times HERE!!
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Also, by strengthening the main case you are keeping the gear mesh more in check. part of the whole failure is the gears pushing away from each other and there are multiple components to the resultant force vector. ANY reduction in ANY of those components will help. However, the caveat is that if some of the load is then forced through another component that was already near failure, well...you'll find out really fast!
It sounds like a few of us have thought about the "exoskeleton" idea. Time to bust out the chop saw and welder!
Well, my thoughts are this.....The thing works as a whole. Also, how do you know the differential area is getting pushed straight back? My guess is that it is being forced away from the rest of the case on more than one plane. It's not being forced back at a true 90* angle from the gears. Besides, the main cage is the place to anchor the secondary one. My idea makes it a multi-piece cage for easier installation and service.
Bryan
86 GLHS #161, 2016 Impala
SDAC National Member, SDAC Buckeye Chapter Member
A man has got to know his limitations.....
I don't disagree that strengthening the whole case wont help, of course it will. The first time I helped MB pull the trans in her Talon the first thing I noticed was the extensive gusseting on the exterior. I guess for this issue I've been thinking of a more localized improvement than a case redesign.. Hmmm...
Vectors. The angle of the tooth dictates the split, so 45° is close to 50%/50%.
My comment was that the helical gears put a torsional load and also a side load into the ring gear. The side load on the ring gear teeth offset by the radius of the ring puts a pretty good moment into the equation. If the gears were straight the load on the case is mainly perpendicular to the inner shafts and in line with the gussets. The helical gears' side loading adds some twisting action to the gussets.
JT
SDAC Director
SDAC-Chicago President
JOIN SDAC and your local Chapter TODAY! - SUPPORT the CLUB that supports YOUR HOBBY!
87 Shelby Z - 10.50@141.66mph
87 CSX #751 Clone - 12.88@102.88mph
www.badassperformance.com
Check out Turbo-Mopar Times!
Submit your 1/4 mile times HERE!!
Support SDAC! Join Today!
"I'm not some pro athlete with a bajillion dollars, I'm just an every man"
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I see what you are saying and I agree. Maybe both. Add material in the bowl above the crack area and the exoskeleton?
Bryan
86 GLHS #161, 2016 Impala
SDAC National Member, SDAC Buckeye Chapter Member
A man has got to know his limitations.....