Split-Case output mounting piece. (1 Viewer)

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zuluzeugma

zuluzeugma

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FROR makes this plate that bolts on the back of mini-truck cases to build a rear cross member off.

http://frontrangeoffroadfab.com/nfo...n.jpg?osCsid=20864ce5e133037ee60b1c071eb20009

Does anyone make this for the Split case? If not:

1. Is there a reason why?

2. Who is interested in one? I can draw it up in SolidWorks and get my buddy to buzz 5 or 10 out of 3/8 plate with laser tracer cutter

I'm about to start an sm420/toybox/split case swap and am trying to have all the parts in advance.
 
I'm currently building my crossmember. I will have 1 bolted to the Toy Box in the standard location and the other will be retained by 3 maybe 4 of the split case out put retainer bolts. I'd like more but because of the speedo location, you can't really. I'll then tie the front and rear crossmembers together and I'll have a skid under it. I'll post pics when I get it done.
 
freds40 said:
I'm currently building my crossmember. I will have 1 bolted to the Toy Box in the standard location and the other will be retained by 3 maybe 4 of the split case out put retainer bolts. I'd like more but because of the speedo location, you can't really. I'll then tie the front and rear crossmembers together and I'll have a skid under it. I'll post pics when I get it done.
Click to expand...

This was my exact idea. I was hoping there was already a plate to weld to. The mini case has the speedo output in pretty much the same place and theres a relief cut out for it.
 
As rigid as the FJ frame appears to be, my suggestion would still be to only mount the power train combo at 3 places. The reason goes back to high school Geometry class. 3 points define a plane. Move any of those points and you still have a flat plane. It might be tilted at some odd angle, but it's still flat.

Add a fourth point and you warp the plane when one of the points moves. That translates into undue stress on the mounts & frame, and possibly/probably broken parts. Those who've ever owned a Dana18 can attest to frequently breaking the ear off it's fourth mount. I can't recall ever seeing one of those ears that hadn't been welded back on, unless it had been just left off after breaking.

Was a common report on cK5's forum that someone with 4 mounts had broken something on the frame or mounts. Granted, those frames are more flexy than an FJ's, but the problem is still there.
 
ntsqd said:
As rigid as the FJ frame appears to be, my suggestion would still be to only mount the power train combo at 3 places. The reason goes back to high school Geometry class. 3 points define a plane. Move any of those points and you still have a flat plane. It might be tilted at some odd angle, but it's still flat.

Add a fourth point and you warp the plane when one of the points moves. That translates into undue stress on the mounts & frame, and possibly/probably broken parts. Those who've ever owned a Dana18 can attest to frequently breaking the ear off it's fourth mount. I can't recall ever seeing one of those ears that hadn't been welded back on, unless it had been just left off after breaking.

Was a common report on cK5's forum that someone with 4 mounts had broken something on the frame or mounts. Granted, those frames are more flexy than an FJ's, but the problem is still there.
Click to expand...

It did not seem like a wise idea to hang the weight of the split case off the back of the Toybox...
 
It may not be, but that doesn't mean that you should have two rear mounts.

I'd use the plate like you're thinking of using. I'd put one HEGA style mount at the bottom of it, with the through bolt across the frame not down the length of it. Then I'd make a lower brace that bolts to the Split-Case, the Toybox, and possibly even to the rear of the transmission. I'd also make the engine mounts similar to the lower picture, with the bolts along the length of the frame. The basic HEGA is available from Autofab.
Sample HEGA's:
HEGA.jpg

HEGA2.jpg
 
Yeah, we are saying the same thing...
 
This was my exact idea. I guess ill buzz a few out and try and sell them on here for a few bucks...
 
That is exactly what I was cautioning against, 4 mounting points. I guess we'll have a test case to see how it works out.
 
LCOwner said:
Why? The split case hangs off the back of the transmission stock.
Click to expand...
Because the mini-truck hi-lo housing is a die-cast part with thin walls. It may or may not be up to the task, but if it isn't then it'll suck out loud.
 
LCOwner said:
So what's the weight differance between a split case and a mini back half? Can't be more than 50#
Click to expand...
When you bounce the vehicle or hit a rock hard that 50# can easily become 150# or more for a micro-second thru inertia.
 
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