setting pinion angle

[prowler]

How does a HP diff get proper lubrication then? As for the u joint i geuss it depends on how much lift you have if you only make it the same angle as the t case flange then your u joint will be way out of allignment and you will get bad vibrations. As far as a d shaft being in phase that has to do with the way the u joints line up mot the angles they are at.

HP designs have oil slinger lubrication device(s) to lubricate the r&p.

too much an angle wouldnt damage the u-joint per say, the driveshaft would bind because too much of an angle. so a high clearance u-joint driveshaft design would get rid of that problem like the trail tough and RRO KAD driveshafts

[ack]

boggdeep said:
measure angle of the t-case output flange with an angle finder and put the pinion at that same angle

You cant make it perfectly straight up to the tcase out put flange because this will not lube the u joint properly. They need a couple degrees of misallignment so they a lubed properly. So figure out angle up to tcase flange and subtract 2 degrees and weld on perches.

This does not sound right, zukinstein.

Every document that I have ever read states that the angle of both u-joints must match each other (read - the faces of the tcase and pinion flanges are parallel to each other) to avoid driveline phase vibrations.. The logic would be
that driveline phase vibrations are more damaging that u-joint lubrication problems (if any).

My position documentation is:

http://www.4x4wire.com/toyota/tech/driveline/

http://www.4xshaft.com/driveline101.html

Of course, this does not apply to drivelines with Double Cardan joints - which are also described in the above links.  I have a Toyota DC on my truck.

I mention all this not to be a smart-[censored] or to pick on anyone - I only want fellow zukers understand that physics and logic trumps undocumented internet heresay every time!

I am also down with my position being proven wrong with facts.

Also, it's more fun to wheel than to wrench.

Cordially,

[prowler]

Also, it's more fun to wheel than to wrench.

Cordially,

i cant agree with you there, i think its half and half depending on what kind of wrenching you mean wrenching when adding more mods is fun, wrenching when repairing broken parts sucks

its all part of the sport

[outsydthbox]

I don't like wrenching as much as I like NOT having to pay someone else to screw-up my stuff...And wait a few days for them to "get around to it" That's where I get my satisfaction... I can screw it up myself as quick, and as often as I want to.

[rockrat]

Threads like this are almost as fun as scapping your finger nails down a chalk board!!

Facts.
2 joint shafts flanges parrallel
Cardon joint(3Joint shaft) pinion points to the case

Out of phase shafts cause premature wear of the U-Joints by lack of lubrication to 2 of the caps opposite each other.

HP diffs are reverse gear and have either a slinger or a restrictor to keep the oil at the upper pinion bearing longer.

+or- 3 deg in any of the above configuration should be fine.
Soft springs cause wrap which can cause vibe on acceleration

Every lift is a little different everyones truck here has different mods. NO PERFECT answer except start out with the Above 1st..

[ack]

What rockrat sez!

 

I tend to chew my nails a lot  so I hope my posts don't create too much painful noise...