From the Pirate4x4 FAQ, I find two lists of bolt patterns:
Driveshaft Tech
I (4RnrRick) am about 95% positive that these are accurate dimensions.
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Toyota Bolt pattern listing:
U-joint refers to the axle-end of the shaft, CV-joint to the T-case end.
U-Joint pattern '79 thru '83 (maybe early '84)
3.340"[84.8mm] Bolt Circle
2.200"[55.9mm] x 2.525"[64.1mm] Rectangular pattern
(4) holes .335"[8.5mm] Diameter
CV-Joint pattern '79 thru '83 (maybe early '84)
3.575"[90.8mm] Bolt Circle
2.350"[59.7mm] x 2.670"[67.8mm] Rectangular pattern
(4) holes .335"[8.5mm] Diameter
U-Joint pattern '84 and later
3.323"[84.4mm] Bolt Circle
2.350"[59.7mm] x 2.350"[59.7mm] Square pattern
(4) holes .413"[10.5mm] Diameter
CV-joint pattern '84 and later
3.636"[92.4mm] Bolt Circle
2.350"[59.7mm] x 2.775"[70.5mm] Rectangular pattern
(4) holes .413"[10.5mm] Diameter
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Originally Posted by TrailCarnage
For future reference, I pulled some dimensions from my d-shaft stock pile.
*All of the flanges referenced share the same pilot flange diameter.
The FJ60 FR/RR differential flange appears to be the same flange that Marlin sell minus the extra holes patterns. The OD of this flanges measures 103.75. I have pictures of the flange if somebody can post them.
FJ60 FR/RR differential flange (fine spline pinion)
Dia 11.2 on a 66 x 66 pattern
FJ40 FR/RR differential flange (coarse spline pinion)
Dia 11.2 on a 60 x 68.5 pattern
'87 2WD P/U RR Diff flange
Dia 10.2 on a 60 x 60 pattern
'85 FR differential flange
Dia 10.2 on a 60 x 60 pattern
'85 FR t-case flange
Dia 10.2 on a 60 x 68.5 pattern
Gen I/II Tacoma FR t-case flange
Dia 10.2 on a 60 x 60 pattern
Gen I/II Tacoma FR diff flange
Dia 10.2 on a 60 x 60 pattern
Gen I/II Tacoma RR diff flange
Dia 10.2 on a 60 x 60 pattern
Gen I/II Tacoma RR CV flange
Dia 11.2 on a 77 x 77 pattern
Gen III 4Runner RR CV flange
Dia 11.2 on a 77 x 77 pattern
Gen III 4Runner RR diff flange
Dia 10.2 on a 60 x 60 pattern
I am looking to find the three most common bolt patterns for the 10mm bolt flanges.
Accounting for the slight measurement differences, looks like 60mm x 60mm square pattern is one for the u-joint flanges.
Then there seem to be two different rectangular CV flange patterns:
60mm x 68.5mm (which is what I measure off my '85 CV) and 60mm x 70.5mm (assuming this is not simply an bad measurement - since that dimension is in reference to an '84/up CV flange). I have also heard that the CV joints on the V6 trucks is a slightly different pattern than the CVs on the 4-cyl trucks. Is this so and is the above discrepency due to that difference?
So, would those 3 bolt patterns fit most of the Transfer case flanges w/ 10mm bolts? If not, which 3 bolt patterns would be most universal? This is for use in a bolt-in driveshaft spacer design, so want to make it as universal a fit as possible.
Thanks.
