Rotating front pinon on YJ
 

Hello Jeepers,

I'd like to correct the pinon angle on the Dana 30 in front of my '93
YJ. It has a 4" SUA lift and has some vibration while in 4 wheel
drive. I don't want to use any degree shims and mess up the stering
geometry.

I'm thinking about drilling out the welds that hold the axle tubes in
place, rotating the pumpkin to desired angle and weld the holes back
in place. Would this be the easiest way to go about this? If so,
what do I use to drill out the welds. Is there something better than
colbalt drill bits and lots of cutting oil?

Any tips or advice would be greatly appreciated.

TIA,
David

Re: Rotating front pinon on YJ
 

David,

A small shim would probably not hurt your castor enough to cause a
steering issue. I'm curious where you're using 4wd that you can feel a
driveline vibe?

I did a spring over on my 89 YJ, when I did the front I tipped the
pinion up 2 degrees. Ended up with around 7" of lift when it was all said
and done, no driveline vibes, no driveability problems.

Carl


<zstasch@yahoo.com> wrote in message
news:1187577009.368403.201250@i13g2000prf.googlegr oups.com...
> Hello Jeepers,
>
> I'd like to correct the pinon angle on the Dana 30 in front of my '93
> YJ. It has a 4" SUA lift and has some vibration while in 4 wheel
> drive. I don't want to use any degree shims and mess up the stering
> geometry.
>
> I'm thinking about drilling out the welds that hold the axle tubes in
> place, rotating the pumpkin to desired angle and weld the holes back
> in place. Would this be the easiest way to go about this? If so,
> what do I use to drill out the welds. Is there something better than
> colbalt drill bits and lots of cutting oil?
>
> Any tips or advice would be greatly appreciated.
>
> TIA,
> David
>

Re: Rotating front pinon on YJ
 

David,

A small shim would probably not hurt your castor enough to cause a
steering issue. I'm curious where you're using 4wd that you can feel a
driveline vibe?

I did a spring over on my 89 YJ, when I did the front I tipped the
pinion up 2 degrees. Ended up with around 7" of lift when it was all said
and done, no driveline vibes, no driveability problems.

Carl


<zstasch@yahoo.com> wrote in message
news:1187577009.368403.201250@i13g2000prf.googlegr oups.com...
> Hello Jeepers,
>
> I'd like to correct the pinon angle on the Dana 30 in front of my '93
> YJ. It has a 4" SUA lift and has some vibration while in 4 wheel
> drive. I don't want to use any degree shims and mess up the stering
> geometry.
>
> I'm thinking about drilling out the welds that hold the axle tubes in
> place, rotating the pumpkin to desired angle and weld the holes back
> in place. Would this be the easiest way to go about this? If so,
> what do I use to drill out the welds. Is there something better than
> colbalt drill bits and lots of cutting oil?
>
> Any tips or advice would be greatly appreciated.
>
> TIA,
> David
>

Re: Rotating front pinon on YJ
 

David,

A small shim would probably not hurt your castor enough to cause a
steering issue. I'm curious where you're using 4wd that you can feel a
driveline vibe?

I did a spring over on my 89 YJ, when I did the front I tipped the
pinion up 2 degrees. Ended up with around 7" of lift when it was all said
and done, no driveline vibes, no driveability problems.

Carl


<zstasch@yahoo.com> wrote in message
news:1187577009.368403.201250@i13g2000prf.googlegr oups.com...
> Hello Jeepers,
>
> I'd like to correct the pinon angle on the Dana 30 in front of my '93
> YJ. It has a 4" SUA lift and has some vibration while in 4 wheel
> drive. I don't want to use any degree shims and mess up the stering
> geometry.
>
> I'm thinking about drilling out the welds that hold the axle tubes in
> place, rotating the pumpkin to desired angle and weld the holes back
> in place. Would this be the easiest way to go about this? If so,
> what do I use to drill out the welds. Is there something better than
> colbalt drill bits and lots of cutting oil?
>
> Any tips or advice would be greatly appreciated.
>
> TIA,
> David
>

Re: Rotating front pinon on YJ
 

David,

A small shim would probably not hurt your castor enough to cause a
steering issue. I'm curious where you're using 4wd that you can feel a
driveline vibe?

I did a spring over on my 89 YJ, when I did the front I tipped the
pinion up 2 degrees. Ended up with around 7" of lift when it was all said
and done, no driveline vibes, no driveability problems.

Carl


<zstasch@yahoo.com> wrote in message
news:1187577009.368403.201250@i13g2000prf.googlegr oups.com...
> Hello Jeepers,
>
> I'd like to correct the pinon angle on the Dana 30 in front of my '93
> YJ. It has a 4" SUA lift and has some vibration while in 4 wheel
> drive. I don't want to use any degree shims and mess up the stering
> geometry.
>
> I'm thinking about drilling out the welds that hold the axle tubes in
> place, rotating the pumpkin to desired angle and weld the holes back
> in place. Would this be the easiest way to go about this? If so,
> what do I use to drill out the welds. Is there something better than
> colbalt drill bits and lots of cutting oil?
>
> Any tips or advice would be greatly appreciated.
>
> TIA,
> David
>

Re: Rotating front pinon on YJ
 

Carl,

I'm moving too slow on the trail to notice any vibrations, but when I
hit 4 hi on the snow covered streets, the vibrations make me cringe so
bad that I don't even use the 4wd.

I have a different Dana 30 that I'm switching in for better gearing
and I thought while I had it on the ground it would be a good time to
make any adjustments needed to correct the driveline angle.

Thanks,
David

On Aug 19, 8:44 pm, "Carl S" <carlsai...@REMOVE.hotmail.com> wrote:
> David,
>
> A small shim would probably not hurt your castor enough to cause a
> steering issue. I'm curious where you're using 4wd that you can feel a
> driveline vibe?
>
> I did a spring over on my 89 YJ, when I did the front I tipped the
> pinion up 2 degrees. Ended up with around 7" of lift when it was all said
> and done, no driveline vibes, no driveability problems.
>
> Carl
>
> <zsta...@yahoo.com> wrote in message
>
> news:1187577009.368403.201250@i13g2000prf.googlegr oups.com...
>
>
>
> > Hello Jeepers,
>
> > I'd like to correct the pinon angle on the Dana 30 in front of my '93
> > YJ. It has a 4" SUA lift and has some vibration while in 4 wheel
> > drive. I don't want to use any degree shims and mess up the stering
> > geometry.
>
> > I'm thinking about drilling out the welds that hold the axle tubes in
> > place, rotating the pumpkin to desired angle and weld the holes back
> > in place. Would this be the easiest way to go about this? If so,
> > what do I use to drill out the welds. Is there something better than
> > colbalt drill bits and lots of cutting oil?
>
> > Any tips or advice would be greatly appreciated.
>
> > TIA,
> > David- Hide quoted text -
>
> - Show quoted text -

Re: Rotating front pinon on YJ
 

Carl,

I'm moving too slow on the trail to notice any vibrations, but when I
hit 4 hi on the snow covered streets, the vibrations make me cringe so
bad that I don't even use the 4wd.

I have a different Dana 30 that I'm switching in for better gearing
and I thought while I had it on the ground it would be a good time to
make any adjustments needed to correct the driveline angle.

Thanks,
David

On Aug 19, 8:44 pm, "Carl S" <carlsai...@REMOVE.hotmail.com> wrote:
> David,
>
> A small shim would probably not hurt your castor enough to cause a
> steering issue. I'm curious where you're using 4wd that you can feel a
> driveline vibe?
>
> I did a spring over on my 89 YJ, when I did the front I tipped the
> pinion up 2 degrees. Ended up with around 7" of lift when it was all said
> and done, no driveline vibes, no driveability problems.
>
> Carl
>
> <zsta...@yahoo.com> wrote in message
>
> news:1187577009.368403.201250@i13g2000prf.googlegr oups.com...
>
>
>
> > Hello Jeepers,
>
> > I'd like to correct the pinon angle on the Dana 30 in front of my '93
> > YJ. It has a 4" SUA lift and has some vibration while in 4 wheel
> > drive. I don't want to use any degree shims and mess up the stering
> > geometry.
>
> > I'm thinking about drilling out the welds that hold the axle tubes in
> > place, rotating the pumpkin to desired angle and weld the holes back
> > in place. Would this be the easiest way to go about this? If so,
> > what do I use to drill out the welds. Is there something better than
> > colbalt drill bits and lots of cutting oil?
>
> > Any tips or advice would be greatly appreciated.
>
> > TIA,
> > David- Hide quoted text -
>
> - Show quoted text -

Re: Rotating front pinon on YJ
 

Carl,

I'm moving too slow on the trail to notice any vibrations, but when I
hit 4 hi on the snow covered streets, the vibrations make me cringe so
bad that I don't even use the 4wd.

I have a different Dana 30 that I'm switching in for better gearing
and I thought while I had it on the ground it would be a good time to
make any adjustments needed to correct the driveline angle.

Thanks,
David

On Aug 19, 8:44 pm, "Carl S" <carlsai...@REMOVE.hotmail.com> wrote:
> David,
>
> A small shim would probably not hurt your castor enough to cause a
> steering issue. I'm curious where you're using 4wd that you can feel a
> driveline vibe?
>
> I did a spring over on my 89 YJ, when I did the front I tipped the
> pinion up 2 degrees. Ended up with around 7" of lift when it was all said
> and done, no driveline vibes, no driveability problems.
>
> Carl
>
> <zsta...@yahoo.com> wrote in message
>
> news:1187577009.368403.201250@i13g2000prf.googlegr oups.com...
>
>
>
> > Hello Jeepers,
>
> > I'd like to correct the pinon angle on the Dana 30 in front of my '93
> > YJ. It has a 4" SUA lift and has some vibration while in 4 wheel
> > drive. I don't want to use any degree shims and mess up the stering
> > geometry.
>
> > I'm thinking about drilling out the welds that hold the axle tubes in
> > place, rotating the pumpkin to desired angle and weld the holes back
> > in place. Would this be the easiest way to go about this? If so,
> > what do I use to drill out the welds. Is there something better than
> > colbalt drill bits and lots of cutting oil?
>
> > Any tips or advice would be greatly appreciated.
>
> > TIA,
> > David- Hide quoted text -
>
> - Show quoted text -

Re: Rotating front pinon on YJ
 

Carl,

I'm moving too slow on the trail to notice any vibrations, but when I
hit 4 hi on the snow covered streets, the vibrations make me cringe so
bad that I don't even use the 4wd.

I have a different Dana 30 that I'm switching in for better gearing
and I thought while I had it on the ground it would be a good time to
make any adjustments needed to correct the driveline angle.

Thanks,
David

On Aug 19, 8:44 pm, "Carl S" <carlsai...@REMOVE.hotmail.com> wrote:
> David,
>
> A small shim would probably not hurt your castor enough to cause a
> steering issue. I'm curious where you're using 4wd that you can feel a
> driveline vibe?
>
> I did a spring over on my 89 YJ, when I did the front I tipped the
> pinion up 2 degrees. Ended up with around 7" of lift when it was all said
> and done, no driveline vibes, no driveability problems.
>
> Carl
>
> <zsta...@yahoo.com> wrote in message
>
> news:1187577009.368403.201250@i13g2000prf.googlegr oups.com...
>
>
>
> > Hello Jeepers,
>
> > I'd like to correct the pinon angle on the Dana 30 in front of my '93
> > YJ. It has a 4" SUA lift and has some vibration while in 4 wheel
> > drive. I don't want to use any degree shims and mess up the stering
> > geometry.
>
> > I'm thinking about drilling out the welds that hold the axle tubes in
> > place, rotating the pumpkin to desired angle and weld the holes back
> > in place. Would this be the easiest way to go about this? If so,
> > what do I use to drill out the welds. Is there something better than
> > colbalt drill bits and lots of cutting oil?
>
> > Any tips or advice would be greatly appreciated.
>
> > TIA,
> > David- Hide quoted text -
>
> - Show quoted text -

Re: Re: Rotating front pinon on YJ
 

On Sun, 19 Aug 2007 20:31:43 -0700, "zstasch@yahoo.com"
<zstasch@yahoo.com> wrote:

>I'm moving too slow on the trail to notice any vibrations, but when I
>hit 4 hi on the snow covered streets, the vibrations make me cringe so
>bad that I don't even use the 4wd.


Why not simply install a aftermarket CV in fron drive shaft where it
connects to pinion? Given short drive shaft it is a viable long term
solution. Though some do it is is not advisable to rotate axle forward
and remove positive caster to improve drive angle a bit.
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