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#1521 mrbigtanker

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Posted 24 December 2017 - 11:58 AM

One common complaint with pickup truck owners is vibration while loaded up. The pinion angle is set with no load in mind, because that's the most likely scenario. When the suspension compresses, the pinion angle shouldn't change much, but it does change.

 

If you really want to fix the problem, you can get creative with a two piece shaft and a CV on the middle joint (like Toyota). Any driveline shop should be able to make you a custom setup, but you will have to verify or possibly reset the pinion angle to get the proper geometry.

 

I built a 63 Nova a couple years ago that rode on air bags. Since the customer wanted to be able to drive it at varying ride heights, we used a custom CV slip yoke on his driveshaft. No vibrations at all. I also use CVs on all of my offroad builds. It's just one of those details that gets overlooked by a lot of people.

These trucks come stock with a 2 piece drive shaft. I think he converted to 1 piece out of a 520, plus dropping does not help either. Its fixed now, just had to unload the bike. Merry Christmas.



#1522 wayno

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Posted 24 December 2017 - 01:11 PM

To fix this issue he could put small overload type airbags in the rear and when he loads it up put a little air in them till it has the proper stance.


 

 


#1523 skyblue

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Posted 26 December 2017 - 02:55 PM

One common complaint with pickup truck owners is vibration while loaded up. The pinion angle is set with no load in mind, because that's the most likely scenario. When the suspension compresses, the pinion angle shouldn't change much, but it does change.
 
If you really want to fix the problem, you can get creative with a two piece shaft and a CV on the middle joint (like Toyota). Any driveline shop should be able to make you a custom setup, but you will have to verify or possibly reset the pinion angle to get the proper geometry.
 
I built a 63 Nova a couple years ago that rode on air bags. Since the customer wanted to be able to drive it at varying ride heights, we used a custom CV slip yoke on his driveshaft. No vibrations at all. I also use CVs on all of my offroad builds. It's just one of those details that gets overlooked by a lot of people.

 
thats's a good idea. 
 

To fix this issue he could put small overload type airbags in the rear and when he loads it up put a little air in them till it has the proper stance.


I tried to install some air shocks a while ago, but they were too fat and would not clear the shock cross member. Maybe I'll do like jrock and relocate that cross member ti clear air shocks.



#1524 wayno

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Posted 26 December 2017 - 05:19 PM

 
thats's a good idea. 
 


I tried to install some air shocks a while ago, but they were too fat and would not clear the shock cross member. Maybe I'll do like jrock and relocate that cross member ti clear air shocks.

 

So you are saying that when you tried to mount the air shock on the upper mount(eye type mount) the hood/sleeve of the shock hit the cross member the mounts are connected to?

Can you buy a lighter duty air shock that is not as large.


 

 


#1525 skyblue

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Posted 26 December 2017 - 07:36 PM



So you are saying that when you tried to mount the air shock on the upper mount(eye type mount) the hood/sleeve of the shock hit the cross member the mounts are connected to?

Can you buy a lighter duty air shock that is not as large.

That is correct.

At the time they where just some shocks busta nut had. a lighter duty shock is a good idea, ill have to look into it.

 

 

took her out shopping and stopped at in n out for lunch.

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#1526 mrbigtanker

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Posted 26 December 2017 - 08:33 PM

4x4 ketchup mustard and extra cheese. 2 fries. Oh and nice truck.

#1527 wayno

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Posted 26 December 2017 - 09:33 PM

I have bolted hijackers onto my 521 without any issues other than they rubbed on something(I don't recall now), they lasted for several years, after they rubbed thru I replaced them with some coil over shocks and I installed the overload air bags, when I had the hijackers I still had the stock bed floor.


 

 


#1528 Charlie69

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Posted 10 January 2018 - 09:27 AM

Quit carrying heavy loads!  LOL



#1529 banzai510(hainz)

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Posted 10 January 2018 - 01:21 PM

I love that blue truck  esp the wheel set up,lowered


Throw on some Weber sidedrafts, Rising Sun hood.... call it good

#1530 skyblue

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Posted 11 January 2018 - 06:35 PM

Quit carrying heavy loads!  LOL

 
Lol.


I love that blue truck  esp the wheel set up,lowered

Thanks!

#1531 mrbigtanker

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Posted 11 January 2018 - 07:54 PM

I love him he makes great drinks.

#1532 Stoffregen Motorsports

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Posted 12 January 2018 - 08:57 AM

Quit carrying heavy loads!  LOL

Yeah, but it's a truck!



#1533 wayno

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Posted 12 January 2018 - 09:55 AM

Does this truck have 4X4 leafs on it?

I went back a few pages, but the photos are gone so I gave up looking and decided to ask.


 

 


#1534 skyblue

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Posted 12 January 2018 - 05:56 PM

Yeah, but it's a truck!

my thoughts exactly. lol

 

Does this truck have 4X4 leafs on it?

I went back a few pages, but the photos are gone so I gave up looking and decided to ask.

It does. new shocks all around too.



#1535 wayno

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Posted 12 January 2018 - 07:54 PM

So I went back a page and noticed something, you have the 2 piece drive shaft in it right now?

If you do look at the rubber piece that is bolted to the cross member at the carrier, if the rubber is deteriorating and the drive line can move to the side it could possibly start rubbing on the housing that holds the rubber piece in, that would make a metal to metal squeaking sound, and since the truck is lowered, the drive line itself might not know where it wants to be, it might not have squeaked at first till it settled into the position that caused it to squeak.

Also you might look at the drive line yoke going into the transmission, when lowered does the drive line compress all the way and force the front drive line piece/yoke farther into the transmission and maybe bottom it out, and the squeak was the yoke outside dust sheild either being forced to the side and rubbing the side of the tail shaft, or maybe the yoke is just being pushed to far into the transmission and the yoke inside is rubbing on the end of the tail shaft that holds the seal. 


 

 


#1536 Charlie69

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Posted 12 January 2018 - 09:20 PM

Yeah, but it's a truck!

Then do not whine when you put heavy loads in a lowered truck!!!  LOL

 

What size blocks re in the back?

 

Do you have much suspension movement front and back before hitting stops.

 

Measure your rear bed hieghth empty and then load your bike and measure again.

 

Also wuth the bike loaded look under the truck at the drive line and the bump stops if you have any.

 

Measure the axlehousing to frame clearance loaded.

 

This is one of my favorite 521s so please do not "fuck it up"!!!  LOL



#1537 Stoffregen Motorsports

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Posted 13 January 2018 - 09:45 AM

Then do not whine when you put heavy loads in a lowered truck!!!  LOL

 

We can try to make them better though. It doesn't have to suck.



#1538 skyblue

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Posted 28 January 2018 - 07:12 PM

this post is for tanker.

 

did some wheel fitment with some titans i bought a few years ago. ran into issues. they don't clear the nubs on the hubs.

 

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but got enough threads on the lugs to take pics. lol

 

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25086973547_ebfa118b2f_b.jpg

 

25086973807_b7c648c849_b.jpg

 

hubs would need machining. rears would need grinding. not sure if i want to go to all that trouble. especially living in an apartment. on the fence.



#1539 mrbigtanker

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Posted 28 January 2018 - 07:21 PM

So if the wheel fits flush to the hub,then just get longer wheel stems. There cheap and doable. But titans are ugly in my opinion. Unless your Jrock. But its your truck and it will still look good, i just think there overdone. 



#1540 skyblue

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Posted 28 January 2018 - 07:41 PM

So if the wheel fits flush to the hub,then just get longer wheel stems. There cheap and doable. But titans are ugly in my opinion. Unless your Jrock. But its your truck and it will still look good, i just think there overdone. 

they don't sit flush. that's the issue. I still think they're good looking wheels. If they cleared i would run them. but right now i don't think so.