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2014+ Lowering / Drop Kits

mjw930

By mjw930
in Modifications & Accessories

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Nasty Senior Enthusiast

Nasty

Posted
Posted

No because the rubber peice is pushing against the transmission. It's really right causing a vibration

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Heavy_Static
Heavy_Static

A few pics from last week:    

bakerrr
bakerrr

First post here Picked her about 2 weeks ago couldn't wait to start modifying it. Just installed Belltechs 4/7 drop this weekend It's low enough for the time being ??  

Nasty
Nasty

Posted Images

6ftdwn57 Enthusiast

6ftdwn57

Posted
Posted

After some reading I realize now why it wouldnt be so easy as to cut off the end of the yoke. It's possible that the tailshaft of the trans is bottoming out in the inside of the yoke. Not like what I was thinking was happening, which is the end of the yoke bottoming out into the transmission. If this is the case, then cutting down the yoke length would not help.

JRoyPDX Enthusiast

JRoyPDX

Posted
Posted

I would never cut a slip yoke. I would shorten the driveshaft itself.

 

My Maxtrac flip kit has an off center pin hole in the hanger bracket that shifts the axle back slightly to give the driveshaft room.

 

You could drill another hole in your hanger to do the same thing, but if you're finicky about the axle being perfectly centered in the wheel well I would not suggest it; it moves it back an inch.

6ftdwn57 Enthusiast

6ftdwn57

Posted
Posted

I'll just have the shaft shortened by a shop. I got ahead of myself. Riding to work in the pouring rain on the Harley wasn't fun this morning. Was trying to avoid more days of that. Plus I am anxious to get the truck on the ground and driving. Especially because I am expecting vibrations/shake/noise from incorrect driveline angles, and the day or two extra that will be to sort out.

6ftdwn57 Enthusiast

6ftdwn57

Posted
Posted

Ok so I have 4' pointing down at the tailshaft of the trans. And the pinion is setting pretty much dead level, not even .5' down.

 

What degree pinion shims would be recommended?

 

Driveshaft goes to repair shop tomorrow. I'm at their mercy for when that gets done.

JRoyPDX Enthusiast

JRoyPDX

Posted
Posted (edited)

Ok so I have 4' pointing down at the tailshaft of the trans. And the pinion is setting pretty much dead level, not even .5' down.

 

What degree pinion shims would be recommended?

 

Driveshaft goes to repair shop tomorrow. I'm at their mercy for when that gets done.

As I understand it...

 

On single u-joint slip yoke driveshafts your adjust so that operating angles match. If driveshaft is 8deg. and tail shaft is down 2deg. then it has 6deg. operating angle. You need to shim the axle to 2deg. up so that its operating angle is also 6deg. (using arbitrary #'s for this example)

 

See link: https://www.drivelinesnw.com/part-trouble-shooting/vibration-analysis/angle-analysis/measuring-and-correcting-angle-problems/

Edited by JRoyPDX
6ftdwn57 Enthusiast

6ftdwn57

Posted
Posted

f0q0c8.jpg

 

4/6 drop

 

1.5" of driveshaft cut down

 

4 degrees of shims to bring rear pinion back up

2qwzw9v.jpg

  • Like 5
6ftdwn57 Enthusiast

6ftdwn57

Posted
Posted

Put 10 miles on it and no shimmy or shakes. Did a light launch and it felt great. Need to get it aligned Monday after work. But it's not that far out at all. Maybe a slight negative camber

Nasty Senior Enthusiast

Nasty

Posted
Posted

Can you take a picture of the front of the driveshaft where it goes into your trans and also a picture of he driveline angle and distance between the axle and frame

JRoyPDX Enthusiast

JRoyPDX

Posted
Posted

 

 

4/6 drop

 

1.5" of driveshaft cut down

 

4 degrees of shims to bring rear pinion back up

Looks good, makes me want to go 1" more to 4/7 all the way around on mine.

  • Like 1
Nasty Senior Enthusiast

Nasty

Posted
Posted

You should. I might raise the rear of mine up to 6. For some reason my leafs are really.soft

Nasty Senior Enthusiast

Nasty

Posted
Posted

My lift hangers show soon. Did you get hit with the Chevy lean ?

JRoyPDX Enthusiast

JRoyPDX

Posted
Posted

Just checked mine out, I am about 1/2" higher on the front right. Still about a 1" rake in the back overall.

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