Calgary Jeep Association

4x4 Related Groups => Tech Talk => Topic started by: apeman on June 28, 2010, 09:25:53 PM

Title: Setting Pinion Angle
Post by: apeman on June 28, 2010, 09:25:53 PM
I going to set up my perches on my D44 , and will be using a tom woods hack ' n tap and driveshaft on my NP242...from what i understand i want the pinion angle on the d44 to be basicall pointing directly at the t-case? Minus 3 degrees?  Anyone with a little more clarification?  I dont want to weld the new perches on the axle until i am sure what my angles need to be.
Title: Re: Setting Pinion Angle
Post by: cLAY on June 28, 2010, 10:35:14 PM
That's about it, slightly below pointing at the t-case so that when you tromp on the go pedal and the pinion rotates up from the axle wrap it doesn't snap the u-joint.
Title: Re: Setting Pinion Angle
Post by: apeman on June 28, 2010, 11:15:23 PM
Thats what i thought...once i get the ZJ discs on i will get to work on setting and welding the perches..
Title: Re: Setting Pinion Angle
Post by: Greg-100 on June 02, 2014, 07:36:50 PM
Doing the same thing with a D35 axle out of a Cherokee going into a YJ with a 3 inch lift.


With the rear will go 3 degrees down.

Question, what angle for the front end?

I went from 4.11 to 3.55 so have to change out the front also. (3.55 where sitting in the shop and might lower the revs going down the highway)

Cost of the swap so far is just grinders disks and welding supplies.

Greg
Title: Re: Setting Pinion Angle
Post by: BlackYJ on June 02, 2014, 07:47:58 PM
I went from 4.11 to 3.55 so have to change out the front also. (3.55 where sitting in the shop and might lower the revs going down the highway)


Total side bar, but did you reduce your gearing?   :o
Title: Re: Setting Pinion Angle
Post by: hps4evr on June 02, 2014, 09:09:50 PM
Total side bar, but did you reduce your gearing?   :o

Uhhhh yeah, Scott you've been out of it too long, it's the cool thing to do now.  ;)
Title: Re: Setting Pinion Angle
Post by: Greg-100 on June 02, 2014, 09:23:00 PM
The reason for going down is I am out on the prairie... no hills... mainly used for hunting... the odd 5 hour run to Banff or 4 hours to Edmonton.

Had the 3.55's sitting around for a couple of years now, so no cost to me.

With the 4.11 I am doing 3000 rpm @ 60 mph, if the 3.55's get me down to 2500 rpm will be happy.

Having fun with the learning curve on stripping an axle and welding on brackets and perches.

Greg
Title: Re: Setting Pinion Angle
Post by: Bnine on June 03, 2014, 08:31:33 AM
Yeah, couple degrees down for axle wrap is the answer

Front of a YJ with vacum disco, set the perches based on castor. 5-6 degrees for 33's.  Ignore the driveline angle.
Title: Re: Setting Pinion Angle
Post by: rws on June 29, 2014, 04:31:40 PM
Uhhhh yeah, Scott you've been out of it too long, it's the cool thing to do now.  ;)


Who the heck is Scott????????
Title: Re: Re: Re: Setting Pinion Angle
Post by: BUKI on June 29, 2014, 10:27:33 PM
Who the heck is Scott????????
BlackYJ