ZF + TRex = Drive Line problems

[1sicbronconut]

Looks like you have more than enough good ideas but have you considered a narrowed HP 44? I'm guessing it wouldn't solve all of your issues but it sure would help quite a bit.

 

[Teal68]

Did you ask BC what the 2 extra slotted holes on the bottom are for?

 

[BanditBronco]

DirtDonk, you are the man sir.

How do you feel about tapping new holes in the frame vs putting a sleeve in there?


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The original 4 holes have a nut backer, I definitely would do something, besides drill and tap the frame. whether that is a weld in nut, full sleeve, threaded bung, or floating nut plate.

 

[Big Slim]

i ordered the same cross member and sent it back. had the same problem. i think this cross member is used for another transmission, they tried the dual use but failed. seemed like the tubular version was ok but they said they had problems with the machine shop. i am still trying to figure out how to build one.

would a rivet nut work?

 

[DirtDonk]

would a rivet nut work?

The concept is valid, but with the type you usually see as a consumer product, I'm not sure I'd trust them for these duties.
If there is an industrial version however, it might be something to look into.

Paul

 

[Apogee]

...Would a rivet nut work?

Maybe...I haven't done much sheet metal design work in a while, but if my memory serves me correctly, most of the sheet metal thread inserts don't go beyond 3/8-16 fasteners, and smaller on some types of inserts, so what size fasteners are needed with those crossmember bolts?

 

[stevenson44]

Maybe...I haven't done much sheet metal design work in a while, but if my memory serves me correctly, most of the sheet metal thread inserts don't go beyond 3/8-16 fasteners, and smaller on some types of inserts, so what size fasteners are needed with those crossmember bolts?

Apogee, thanks for your help.

They are 3/8


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[stevenson44]

i ordered the same cross member and sent it back. had the same problem. i think this cross member is used for another transmission, they tried the dual use but failed. seemed like the tubular version was ok but they said they had problems with the machine shop. i am still trying to figure out how to build one.

would a rivet nut work?

Big Slim,

Sorry it didn't work for you. I was excited to get it, cross member looks awesome and fits between the frame rails perfectly. I need a Bluetooth driveshaft lol.


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[stevenson44]

Did you ask BC what the 2 extra slotted holes on the bottom are for?

Teal,

I didn't ask, I will when I call back


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[nvrstuk]

Go to a site like RuffStuff and buy weld in nuts

https://www.ruffstuffspecialties.com/WELDWASH.html

Cheap & work great.

 

[bigmuddy]

Go to a site like RuffStuff and buy weld in nuts

https://www.ruffstuffspecialties.com/WELDWASH.html

Cheap & work great.

There we go! Thanks for posting Brian, I have been looking for something like this..;D

 

[stevenson44]

Go to a site like RuffStuff and buy weld in nuts

https://www.ruffstuffspecialties.com/WELDWASH.html

Cheap & work great.

I ordered some of these, I think this is the way to move forward.

Thank you everyone. I'll post pics when the crossmember is moved.


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[tk1218]

I shimmed the trans up about an inch and mine now clears

 

[nvrstuk]

You probably did thisbut when thetrans goes up higher thedrivepine angles increase also.

Just a heads up!

 

[stevenson44]

I shimmed the trans up about an inch and mine now clears

TK, do you have the same cross member?

 

[englewoodcowboy]

Had a similar issue with the AA cross member fro a 6R80. We ended up having to cut the cross member apart and modify it to work, looks like you may have to do the same for your setup.

 

[broncozx]

I used step bolts, on a mustang with fays2watt link, through the frame, similar to these http://image.made-in-china.com/43f34j00RjyEtUYqYioA/Step-Screw-M3-M64-.jpg

 

[bigjhoov]

McMaster-Carr has steel nutserts up to 1/2".

https://www.mcmaster.com/nutsert/?SrchEntryWebPart_InpBox=nutsert

https://www.amazon.com/uxcell-Knurled-Insert-Nutsert-Bronze/dp/B01N3Y118A

 

[jmhend]

TK, do you have the same cross member?

Any update?

 

[73azbronco]

Hmmmm, I think it's the wrong cross member as well. My NV4500 uses a similar style mount, but sits much further back and uses stock frame mount points. TheD20 front yoke rides halfway over the mount plate. I think mine is advance adapters, maybe give them a call.

Look at my build thread post 34 pic 4, mount is right at the back end of the arm brackets yours sits most in front, That BC bracket ain't right.