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Front drive shaft broken

Have we confirmed that the teraflex CV’s will fit on to the IG shaft? And the axle flanges?
yes, the one for the Jeep JL Teraflex 1745000. I've got one coming in and have talked to another owner that has one installed and has ~500 miles on it with no issues.
 
That’s fair enough if you’re prepared to take the financial risk. But I just don’t get it myself.
My recollection of the Ineos promotional videos and trips and photos before release is that they included many instances where the factory itself was using 35" tires, for example that big Africa trip they did. My understanding is that 35" tires will not fit without a lift. So I assume during those factory tests that Ineos had taller springs installed? Does anyone have any insight on that?
 
yes, the one for the Jeep JL Teraflex 1745000. I've got one coming in and have talked to another owner that has one installed and has ~500 miles on it with no issues.
Are we looking at that as just an easily obtainable road-side repair part? From the looks, it seems that the Teraflex would be subject to the same failures as the stock unit? Or am I missing some reason why its design is better than stock?
 
So question - presuming one DOESN’T do any lift, what size tires will fit without rubbing? And have we seen drive shaft failures when ONLY larger diameter tires were fitted, without a lift (other than the couple of stock failures)?
There have been reported failures with the stock springs. I think there was at least one person earlier in this thread. I don't know if they had larger tires or not.
 
Are we looking at that as just an easily obtainable road-side repair part? From the looks, it seems that the Teraflex would be subject to the same failures as the stock unit? Or am I missing some reason why its design is better than stock?
From the TeraFlex website:
"The TeraFlex JK: Rzeppa High-Angle Factory Replacement CV Joint Kit replaces a worn or damaged factory Rzeppa CV joint and driveshaft without resorting to an expensive aftermarket U-joint upgrade. Allows angles up to 15 degrees. The high-angle CV housing reduces boot failure associated with 3" or more lift. The included low-friction grease is engineered specifically for the high RPM needs of the JK Rzeppa CV joint and features high-viscosity surface bonding characteristics necessary to properly adhere the grease to all moving surfaces."
 
I believe this was a c clip failure, not a boot failure

There have been reported failures with the stock springs. I think there was at least one person earlier in this thread. I don't know if they had larger tires or not.
I think it was @Logsplitter - who was running stock suspension and tires? I can’t remember
 
My recollection of the Ineos promotional videos and trips and photos before release is that they included many instances where the factory itself was using 35" tires, for example that big Africa trip they did. My understanding is that 35" tires will not fit without a lift. So I assume during those factory tests that Ineos had taller springs installed? Does anyone have any insight on that?
The Ineos Kavango Safari vehicle is running 34” The Ineos guys were very secretive or just plain didn’t know what has been done to suspension or running gear when I asked at the Game Fair UK.
First two pictures are from the game fair and second two from Ineos dealer in Gabarone ,I think that one is on 35” tyres. My guess is they have spacers on the springs 🤔
 

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@parb and @ECrider - exactly. The WHOLE geometry, I believe, stays intact - just up a bit. So no additional angle on the drive shaft. You can still pick up an inch of clearance that way without the drive shaft risk. If the extra clearance is really that important, probably the best solution. I think the martinis made you lucid and succinct, @ECrider
Going with modestly larger tires, assuming they don’t rub, would be the most reliable and safest way to gain some lift… all suspension geometry would remain at stock settings and not impacted. Anything up to say 1.5” taller (half this measurement for your actual lift) should not present any issue unless you go excessively wide at the same time. Done right the only penalties you’ll pay will be increased weight at each corner, slight speedometer error, the engine working a bit harder as the rolling circumference is larger which is sort of like having a taller gear ratio and finally a bit less fuel economy. Balanced against what you’ll gain off-road all perfectly acceptable compromises.
 
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Yeaaaaahhhhh - I heard him say that but kinda thought the same as @Logsplitter - and Ronny Dahl did have some rubbing that you could hear when he swapped tires.
a "35" is .5 to .75" more radius, but a 10-10.5 may be 2" narrower than a 12.5 (1" per side measured from the center line), and depending on what is being rubbed and when, your nominal 35 pizza cutter may do slightly better than your fattie 33.5. Thats why it's nice to know actual dimensions vs sidewall labeling. Kenda may not be my goto tire brand, but, if I can get a free 1" lift out of it, I bet it's good enough.
 
a "35" is .5 to .75" more radius, but a 10-10.5 may be 2" narrower than a 12.5 (1" per side measured from the center line), and depending on what is being rubbed and when, your nominal 35 pizza cutter may do slightly better than your fattie 33.5. Thats why it's nice to know actual dimensions vs sidewall labeling. Kenda may not be my goto tire brand, but, if I can get a free 1" lift out of it, I bet it's good enough.
Oi vey - 12.5”???? A 285/75/17 is only 11.2” - I think that’s what Ronny Dahl was using and he got some rubbing. 12.5 would be “a gentleman of prosperous carriage”
 
From the TeraFlex website:
"The TeraFlex JK: Rzeppa High-Angle Factory Replacement CV Joint Kit replaces a worn or damaged factory Rzeppa CV joint and driveshaft without resorting to an expensive aftermarket U-joint upgrade. Allows angles up to 15 degrees. The high-angle CV housing reduces boot failure associated with 3" or more lift. The included low-friction grease is engineered specifically for the high RPM needs of the JK Rzeppa CV joint and features high-viscosity surface bonding characteristics necessary to properly adhere the grease to all moving surfaces."

This made me curious enough to attempt to measure the angles on my stock drivetrain with nonstock springs (Eibach 2.5 lift). I found it difficult to measure the angles and the numbers were much lower than I would have guessed by just looking at the angles. The numbers I measured below are the most conservative measurements I made (i.e. highest angle I measured) at each joint. For each measurement I attempted to measure both sides of the axle in an attempt to get a flat surface as a guide (i.e. the diff housing).

If my measurements are even close to correct, then we should easily be within the 15 degree allowance of the Teraflex unit. I wonder what the tolerances are for the stock unit?

I'm not sure if someone else who is more agile and perhaps has better tools to measure the angles can double check my measurements?

Here is what I found:
_____________________
Front driveshaft where it connects to the front diff:
IMG_0336-X3.jpg


About 7 degrees
IMG_0338-X3.jpg

[Edit note: This is simply a photo so I would know what measurement I took, it is not me actually doing the measuring. When I had the protractor aligned to take the measurements it required both hands and at that point I had the center of the protractor alighted about even with where those screw heads meet the metal housing. I didn't have a third hand to help take a photo at that point.]
______________________

Front driveshaft where it connects to the center diff, about 6.5 degrees:
IMG_0343-X3.jpg

(sorry for the crappy photo)
IMG_0340-X3.jpg

__________________

Rear driveshaft where it connects to the center diff, about 3.5 degrees:
IMG_0350-X3.jpg

IMG_0351-X3.jpg

_______________

Rear driveshaft where it connects to the rear diff, about degrees also about 3.5 degrees:
IMG_0352-X3.jpg

______________

As a side note I saw that the cooling fins on my transmission housing are caked in dried on mud, I guess I need to find a place where I can lift up my Grenadier and power wash the mud off, anyone happen to know such a place in the Phoenix Area? This was a very common service for car washes when I lived in Saudi.
 
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This made me curious enough to attempt to measure the angles on my stock drivetrain with nonstock springs (Eibach 2.5 lift). I found it difficult to measure the angles and the numbers were much lower than I would have guessed by just looking at the angles. The numbers I measured below are the most conservative measurements I made (i.e. highest angle I measured) at each joint. For each measurement I attempted to measure both sides of the axle in an attempt to get a flat surface as a guide (i.e. the diff housing).

If my measurements are even close to correct, then we should easily be within the 15 degree allowance of the Teraflex unit. I wonder what the tolerances are for the stock unit?

I'm not sure if someone else who is more agile and perhaps has better tools to measure the angles can double check my measurements?

Here is what I found:
_____________________
Front driveshaft where it connects to the front diff:
IMG_0336-X3.jpg


About 7 degrees
IMG_0338-X3.jpg

[Edit note: This is simply a photo so I would know what measurement I took, it is not me actually doing the measuring. When I had the protractor aligned to take the measurements it required both hands and at that point I had the center of the protractor alighted about even with where those screw heads meet the metal housing. I didn't have a third hand to help take a photo at that point.]
______________________

Front driveshaft where it connects to the center diff, about 6.5 degrees:
IMG_0343-X3.jpg

(sorry for the crappy photo)
IMG_0340-X3.jpg

__________________

Rear driveshaft where it connects to the center diff, about 3.5 degrees:
IMG_0350-X3.jpg

IMG_0351-X3.jpg

_______________

Rear driveshaft where it connects to the rear diff, about degrees also about 3.5 degrees:
IMG_0352-X3.jpg

______________

As a side note I saw that the cooling fins on my transmission housing are caked in dried on mud, I guess I need to find a place where I can lift up my Grenadier and power wash the mud off, anyone happen to know such a place in the Phoenix Area? This was a very common service for car washes when I lived in Saudi.

This made me curious enough to attempt to measure the angles on my stock drivetrain with nonstock springs (Eibach 2.5 lift). I found it difficult to measure the angles and the numbers were much lower than I would have guessed by just looking at the angles. The numbers I measured below are the most conservative measurements I made (i.e. highest angle I measured) at each joint. For each measurement I attempted to measure both sides of the axle in an attempt to get a flat surface as a guide (i.e. the diff housing).

If my measurements are even close to correct, then we should easily be within the 15 degree allowance of the Teraflex unit. I wonder what the tolerances are for the stock unit?

I'm not sure if someone else who is more agile and perhaps has better tools to measure the angles can double check my measurements?

Here is what I found:
_____________________
Front driveshaft where it connects to the front diff:
IMG_0336-X3.jpg


About 7 degrees
IMG_0338-X3.jpg

[Edit note: This is simply a photo so I would know what measurement I took, it is not me actually doing the measuring. When I had the protractor aligned to take the measurements it required both hands and at that point I had the center of the protractor alighted about even with where those screw heads meet the metal housing. I didn't have a third hand to help take a photo at that point.]
______________________

Front driveshaft where it connects to the center diff, about 6.5 degrees:
IMG_0343-X3.jpg

(sorry for the crappy photo)
IMG_0340-X3.jpg

__________________

Rear driveshaft where it connects to the center diff, about 3.5 degrees:
IMG_0350-X3.jpg

IMG_0351-X3.jpg

_______________

Rear driveshaft where it connects to the rear diff, about degrees also about 3.5 degrees:
IMG_0352-X3.jpg

______________

As a side note I saw that the cooling fins on my transmission housing are caked in dried on mud, I guess I need to find a place where I can lift up my Grenadier and power wash the mud off, anyone happen to know such a place in the Phoenix Area? This was a very common service for car washes when I lived in Saudi.
I grabbed a cheap mag base angle finder from Harbor Freight and attached it to the bottom side of the front driveshaft, in the middle. It showed right at -10. Of course it's not calibrated and that may not be the right way to check it, but that's what I did. Also have the 2.5 with stock 17" rims/tires. I'll compare next week after the Teraflex is installed.
 
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