The Dana 34 Project: The Ultimate turd polish!

foxwar71 said:
I like Sam's idea of tapping the carrier. You could use just a regular G8 bolt, or use a threaded rollpin from like a 8.8 or 8.25.
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i havent worked with a stock carrier in a dana30/44/ whatever comes with those pins axle before and was like "wtf is this shit, wheres the bolt?" i went to the hardware store, got a roll pin, and didnt like how it sat in there. so i just ran a tap in there and i run a small bolt now.
 
foxwar71 said:
Green loctite will work and hold the rollpin in place if its NEW. the problem with the stock rollpin is after you remove and install, it becomes weakened and doesnt like to stay put. When I set up Dundy's second D30, we reused the roll pin. After it shifted outta place and let the crosspin high-5 the pinion, we tried to use a screwdriver blade the stretch/open the rollpin back so it would hold better. It just factured and fell apart.


Hell, I trust the cotter pin in it now more then the stocker rollpin, at least that wouldnt slide out. :gee:



I like Sam's idea of tapping the carrier. You could use just a regular G8 bolt, or use a threaded rollpin from like a 8.8 or 8.25.
Click to expand...
you guys dont know what your doin, i reused the stock rollpin in my 200k axle and put 4k on it after that with no issue, silly amatuers
 
rweaver138 said:
.!.:D.!.

DSC02260.jpg
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That looks like the pattern was off. You can kinda see the pattern, and a tooth shouldn't just chip on the edge if its set up correctly, should be all or nothing kind of thing.


Oh, and Andy, last time I checked, a Dana 20 was a transfer case and not an axle...
 
Team willys - cross pin got spit out, he says the pinion is all chewed up, that probably caused the ring gear damage.

D35s have the bolt style cross shaft retention pin as well but use a stupid 12pt 1/4" headed one iirc. I would use one from an 8.25 or 8.8, whichever one fits better.

Somewhere in this mess I have two 8.8 bolts/pins/whatever... I need to find and measure them. They are ford part number d8bz-4241-b.
 
Team Willys said:
That looks like the pattern was off. You can kinda see the pattern, and a tooth shouldn't just chip on the edge if its set up correctly, should be all or nothing kind of thing.
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every tooth on the pinion had some type of damage to it, so i'm assuming thats what chipped the ring gear
 
:doh: Wow... I didn't even notice that. Yeah a busted pinion gear could cause that problem for sure.
 
Thanks for the input. Those are a lot of good points made. Especially about the wimpy cross pin.

With the addition of the the D44 spiders and the entire case fully welded the cross pin will be somewhat irrelevant. Ill tack it in to be on the safe side. I got the Special High silicon wire from ESAB that is specific for welding mixed materials, carbon to cast etc. That stuff is $$$$$$$$$$$$ but 40 lbs should last forever. Especially since Ill take it out of the machine when I'm not welding castings, forgings etc.

I also am using The YJ dana 30 housing which is said to be the strongest of all D 30 housings. It is supposed to allow the least amount of deflection internally.

I was wheeling this weekend with an old friend who has been running 37" Mtrs on his D 30 and beating the hell out of this axle with no failure for years and years its the stock axle. Note its a YJ D 30 so it has a CAD axle and those parts relieve a lot of the stress.

I have decided to go no larger than a 35" tire no matter what axle I run.
 
Any update on this disaster?
 
jeeperjohn said:
I think the recurring theme on D30 R&P failures is the stock carrier. How many have had a failure with a full case locker?
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The recurring theme is not just the stock carrier IMO, it's lunchbox lockers in stock carriers.

Two problems. Lunchbox lockers promote carrier flex by design, and they require crosspin removal which seems to result in roll pin failure.

A majority of D30 "R&P" failures are actually really crosspin coming out (go back in just this thread for examples). That's not R&P failure if you ask me.

And in the minority are the people who actually strip the gears. With enough power, enough traction, and strong enough shafts, this is the eventuality. Nothing can change that, but it gets a slightly worse rep than it deserves me thinks.
 
I have not even touched this thing in a month, I got sidetracked with business as well as building a 14 foot tall self supporting slingshot with my church youth group for the local punkin chunkin contest in november... This will be sick.... at least 1000 feet. LOL
A
 
Ironmanandy said:
I have not even touched this thing in a month, I got sidetracked with business as well as building a 14 foot tall self supporting slingshot with my church youth group for the local punkin chunkin contest in november... This will be sick.... at least 1000 feet. LOL
A
Click to expand...

This group will want a build thread on that pumpkin chunker I'm sure. LOL!
 
Ghost said:
This group will want a build thread on that pumpkin chunker I'm sure. LOL!
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Yes we do, don't make me pull out my digital pitchfork.
 
ChicksDigWagons said:
The recurring theme is not just the stock carrier IMO, it's lunchbox lockers in stock carriers.
Click to expand...

I agree

ChicksDigWagons said:
Two problems. Lunchbox lockers promote carrier flex by design, and they require crosspin removal which seems to result in roll pin failure.
Click to expand...

Reusing the same rollpin is what caused their failures.

ChicksDigWagons said:
A majority of D30 "R&P" failures are actually really crosspin coming out (go back in just this thread for examples). That's not R&P failure if you ask me. .
Click to expand...

I agree

ChicksDigWagons said:
And in the minority are the people who actually strip the gears. With enough power, enough traction, and strong enough shafts, this is the eventuality. Nothing can change that, but it gets a slightly worse rep than it deserves me thinks.
Click to expand...

I don't think it gets a slightly worse rep than it deserves. My crosspin did not fall out, the stock carrier had .020" of runout where the gearset broke. It flexed, the gearset broke, and that was that. I've seen and know other people who have the same thing happen with a locker in a stock carrier (without the crosspin coming out).

Moral of the story: I wouldn't trust a D30 on 35s unless it had a full case locker.
 
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