Ford 8.8 install questions.

[Broncopower33]

I got an 8.8 out of an Explorer for my 89 bronco ii. I'm in the process of welding in the spring pads as well is finding the pinion angle. I'm running explorer leaf springs and 3" blocks. I have the axle hanging with drive shalf on. Right now the blocks are not welded. The angle of the drive shalf right now is 22 degrees and the axle or pinion is also 22 degrees. Is that angle ok, can I leave it at that position????? I saw in the tech library somthing about 6 degrees, but I dont see how that works. I checked my other broncos and the drive shalf is around 20 deg with a stock 7.5 rearend? Need and info..

Thanks

 

[cammeddrz]

regardless of the degree measurement. the pinion should point directly at the t-case yoke when sitting at ride height. meaning, the diff-end u-joint should have ZERO angle to it

 

[Mac]

You do not ever want the two pointing directly at each other, they are parallel in a lot of cases. It's the difference between the driveshaft and trans/rear end that is the 6 degs. Rangers vary +- several degrees

Dave

 

[Broncopower33]

ok thanks for the info, I will re adjust the angle. Would you set the pinion at 6deg like it says in the tech library or keep it at 0 deg???

 

[Teddyzee]

ok thanks for the info, I will re adjust the angle. Would you set the pinion at 6deg like it says in the tech library or keep it at 0 deg???

Measure the angle of the engine/trans, as Mac said, and match that. The angle from driveshaft to pinion is largely irrelevant.
The harmonic balancer is often an easy place to find this angle.

 

[Broncopower33]

Ok Great!!! Thanks!!

 

[4x4junkie]

Are you running a double-cardan driveshaft (preferred)? Or a single-cardan?
(the info already given out here may be right or it may be very very wrong, depending)...

Whatever the case though, I do suggest pointing the rear pinion down 1-2° from what it's "supposed" to be so as to account for leafspring windup while you're under power (so about 1-2° down from inline if you are running a double-cardan shaft)

Also, the pinion angle should be assessed with the vehicle's full weight on the suspension (your first post wasn't real clear on this).

Hope that helps

 

[Broncopower33]

Ok, I was able to get the pinion to the correct angle now. So under load I'm at 6 deg now. My next question is what about the leaf spring pads. With no load on them then are at 0 deg, but when I put load on the springs it changes to 15 deg. I assuming this is wrong?? Should I shim the blocks more than they already are to correct this problem?
;
;

 

[cammeddrz]

you have a double cardan shaft (note how the t-case side has 2 u-joints)

I was right, mac was wrong.

zero, angle on the diff-side u-joint, like the 2nd picture shown in 4x4junkie's post

 

[Broncopower33]

So with a cardan drive shaft, is the pinion angle even critical?

 

[cammeddrz]

yes, very. if wrong, it will vibrate like crazy causing premature failure as well

 

[PlumCrazy]

FYI 6* is what a Super Cab Ranger is set at....When I did the B2, it was 17* stock.

Sent from my XT907 using Tapatalk

 

[Broncopower33]

Cool thanks for the info guys. Funny you say the 17', because I have two other stock bii, and they are set at 17'. Think your on to something..

 

[Broncopower33]

So how do you correct the spring pad angle?????????? Does it need to be a 0' under load?

 

[PlumCrazy]

Make the joint joint straight with the vehicle sitting on all 4 tires....then weld the perches there.

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