CV Joints - ALL Tech and Specs

AgitatedPancake said:
What about the CV driveshafts from grand cherokees and JKs (and I'm sure others)? The flanges already exist for those, depending on what spline count you need etc
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The substantially less than stellar reputation of those scares me away.

I know we covered in another thread that the failure is typically the boots ****ing off at high angles (and then letting the grease out and killing the joint) and that's something I could check for but I have more trust that conventional form factor joint is not going to sling the boot on me. And I'd just be a little more confident with something that is proven to tolerate post-diff levels of torque.

I won't be running particularly high angles in high speed operation FWIW.

I know some larger Fords use CV joints on the front shaft but those are $$$
 
arse_sidewards said:
The substantially less than stellar reputation of those scares me away.

I know we covered in another thread that the failure is typically the boots ****ing off at high angles (and then letting the grease out and killing the joint) and that's something I could check for but I have more trust that conventional form factor joint is not going to sling the boot on me. And I'd just be a little more confident with something that is proven to tolerate post-diff levels of torque.

I won't be running particularly high angles in high speed operation FWIW.

I know some larger Fords use CV joints on the front shaft but those are $$$
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What if they actually are just a normal form factor, and the RPM + angle is what's killing them?

Amazon.com

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arse_sidewards said:
I guess I'll find out the hard way. :laughing:


Any idea what the shaft diameter is on those jeep joints is?

Seems like most of the truck CV stuff is on the order of 1-3/8 shaft diameter.
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I don't unfortunately, I junked the CV driveshaft stuff as soon as I could :lmao:. But I wish I still had some lying around so we could add the specs to this thread
 
Can't really dig my Toyota parts out at this time, but here's what I can provide -

CV axle inboard and outboard splines are the same between at least the MK3 Supra, several years of Tacoma IFS, mid-2000's 4Runners, and probably more.

I was, at one point, starting on a long-travel suspension on our Tacoma using MK3 axles. I had the axles apart and had drawn them up in CAD. My plan was to use the outboards as inboards as well. Cut off the threads and cut a snap ring groove. I had several four-banger driveshafts on hand that I was going to machine and weld up to make plunging bars since the Supra outers aren't plunging and the inners are the usual plunging tripod.
 
AgitatedPancake said:
That would be sweet. At one point I heard the regular D60 RCVs were 934 (size 21) equivalents, and the "big bell" rockwell and 05+ 60 shafts were size 30 based. Be curious how true that ends up being.
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Interesting tidbit I learned when ordering some replacement parts for Dana 60 RCV's

99-04 Dana 60 bell is ever so slightly smaller than other Dana 60's. I didn't clarify much more on the phone, but when ordering replacement boots he asked if I was sure it was actually a 99-04 bell, because if it wasn't the boot wouldn't fit.

That seems to imply that RCV isn't concerned about creating new bell just for a specific application, so it may be possible that there are other small differences in other shafts (i.e. various D30 / D44 applications)
 
fl0w3n said:
That seems to imply that RCV isn't concerned about creating new bell just for a specific application, so it may be possible that there are other small differences in other shafts (i.e. various D30 / D44 applications)
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This tracks. I ordered boots for their outer stub axle made for Spidertrax' 35 spline unit hubs. The boot didn't fit the 35 spline Spidertrax axles I have. I spoke with a rep and he said it's the same as a D60 part.
 
Pharr said:
This tracks. I ordered boots for their outer stub axle made for Spidertrax' 35 spline unit hubs. The boot didn't fit the 35 spline Spidertrax axles I have. I spoke with a rep and he said it's the same as a D60 part.
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So why didn’t it fit then?
 
The hole for the axle was larger than my axle.
 
AgitatedPancake

78-79 D44 measured as installed in the vehicle, so take it with some tolerance, 3.750”

Also, might want to update the D60 to show the two sizes RCV told me, 4.40” for 99-04 and 4.48” for every other 60 from KP to 05+ (excluding big bell obviously).

84 Bronco’s name is untaggable but maybe you can get him to get measurements for his JL 44 RCVs
 
fl0w3n said:
AgitatedPancake

78-79 D44 measured as installed in the vehicle, so take it with some tolerance, 3.750”

Also, might want to update the D60 to show the two sizes RCV told me, 4.40” for 99-04 and 4.48” for every other 60 from KP to 05+ (excluding big bell obviously).

84 Bronco’s name is untaggable but maybe you can get him to get measurements for his JL 44 RCVs
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Added those notes, thanks for the extra info! I've been neglecting this topic for a while unfortunately heh
 
fl0w3n said:
84 Bronco’s name is untaggable but maybe you can get him to get measurements for his JL 44 RCVs
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I couldn't get a great measurement with it installed, but it looks like it is 3.75-4". According to Rock Auto, the knuckle opening is 110mm (4.33") and the orange boot would not fit through it installed, so maybe 4" then?
 
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'84 Bronco II said:
I couldn't get a great measurement with it installed, but it looks like it is 3.75-4". According to Rock Auto, the knuckle opening in 110mm (4.33") and the orange boot would not fit through it installed, so maybe 4" then?
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Right on, if you ever find yourself pulling them it would be interesting to know for certain. 4" makes sense based off that, and the fact that the old D44's are 1310 joint size vs JL 1350 size it kinda seems reasonable that old is 3.75 and new is 4.0
 
fl0w3n said:
Right on, if you ever find yourself pulling them it would be interesting to know for certain. 4" makes sense based off that, and the fact that the old D44's are 1310 joint size vs JL 1350 size it kinda seems reasonable that old is 3.75 and new is 4.0
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From RCV's page for what it's worth:
The RCV Jeep JL CV for Dana 44 is 18% larger than our previous Dana 44 design and uses our same Dana 60 architecture.
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'84 Bronco II said:
From RCV's page for what it's worth:
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Interesting, 3.75” @ 18% is 4.425”, too big, so maybe the old school D44 is closer to 3.5” because @ 18% is 4.13” and that puts the bell reasonably smaller than the Rock Auto dimension you quoted.

Presumably D60 architecture means the star size or spline count at the star?


willis_racing said:
'84 Bronco II

You have to use the apostrophe. :homer::homer:
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I try with the @ way, and it doesn’t auto populate his name from the suggestion list. I guess you need to use the old school coding type it out way.
 
I would guess it is the ball bearing size which is comparable to the star size. Not sure what the actual numbers would be but a 7/8" ball increased by 18% is basically 1" which sounds plausible to me. Seems like a 30 series is a 1 1/8" ball and that is a pretty stout CV.
 
Wish I found this thread a couple days ago! Anyone have an experience with BMW axles?
I ordered 2 CV's with what I believe should come with Size 15 joints. They are about the right length I need for a +2in Toyota LT kit. I bought some cheapies to test out. The hope is finding a way to build an axle without needing to purchase expensive machined axle shafts or cutting apart OEM Toyota axles.

Here is what I got:
NCV70041 (Porsche 944)
NCV27526 (BMW Something or other)

I'll keep you guys updated on my findings.
 
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