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Bump stop options?


d.p

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  • 2 months later...
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Alright revisiting this now.

 

Rears:  http://www.energysuspensionparts.com/191306

 

And for the fronts I found these with a review from someone with a 521:  http://www.energysuspensionparts.com/9.9102

 

My truck is riding on all 4 bump stops and I am trying to get the rear driver side off but the inside nut/bolt seems to be seized up.  It backed out a lot but froze up towards the end.  Was going to try and cut them but would prefer not to unless I have another set lying around (like to keep stock parts) and they seem to be hard to come by.   So I figure I can just swap them all out and see how it rides.  

 

Rear mounting holes on the frame are 5 1/2"s apart so the above should work just fine.   

Here are some blue ones.

https://autoplicity.com/324945-daystar-bump-stop?gclid=EAIaIQobChMI0fTg46Cw1gIVCA5pCh0kJQE7EAQYBCABEgICmPD_BwE

 

http://www.jegs.com/i/Four-Real-Steel-by-Daystar/319/KU09017BK/10002/-1?CAWELAID=1710514691&CAGPSPN=pla&CAAGID=15769068431&CATCI=pla-172937247671&CATARGETID=230006180003463606&cadevice=c&gclid=EAIaIQobChMI0fTg46Cw1gIVCA5pCh0kJQE7EAQYASABEgL5LvD_BwE

 

http://www.ebay.com/itm/Daystar-Universal-Bump-Stops-KU09017BK/382191230159?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D41451%26meid%3D2163da5bd5064faabc411fdfa8171433%26pid%3D100005%26rk%3D4%26rkt%3D6%26sd%3D322434748998&_trksid=p2047675.c100005.m1851

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Lowered vehicle, without major suspension/chassis changes means less travel, thus shorter distance from ride height, to bottoming out.

And this means harsher ride, no matter what you do.

You can help the bottoming out by using stiffer springs, and much heavier dampening shocks.

But this still doesn't mean a nice soft ride, it just mean less bottoming out.

 

I've seen rear frames notched, or even highly modified so that the axle has farther to go before bottoming, but that's major fab work.

The front would take something like Beebani's lowered front arms, and coil-over kits.

 

Oh, and by the way, don't go hammering it with 3" blocks, and big power.

The geometry on the springs changes as to put more twist on them, and will cause the main leaf to snap.

Been there, did that, got the Tee shirt.....

Either run traction bars to limit axle wind up, or go 4-link like I did.

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I'll be doing this pretty soon. What did you cut the rubber with?

 

Sawzall and drywall knife.  Its a bitch with them on the truck but I couldn't break one of the mounting nuts/bolts loose so I had no choice.  

 

Didn't touch the fronts.  Truck has a lot less bounce and a better ride overall.    

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Bounce would indicate bad shocks.  New theory lower vehicle instead of replacing bad shocks!  LOL

 

This place never ceases to amaze me...must be the median age or something.  

 

FWIW old man river the truck was lowered and thus riding on the bump stops which didn't allow the shock to travel.  I cut them to allow the relatively new KYB gas shocks to alleviate that. 

 

f9e.gif

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Yeah I know it...but still no better wealth of knowledge on old Datsuns than this place.  

 

The roadster forum is the same way. The median age is, well, up there. The old timers know just about everything.

 

Was walking out of Pepboys on Saturday with my roadster shirt on, and some old guy stops me and goes "I have one of those!" (They're few and far between up here in New England.)

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This place never ceases to amaze me...must be the median age or something.  

 

FWIW old man river the truck was lowered and thus riding on the bump stops which didn't allow the shock to travel.  I cut them to allow the relatively new KYB gas shocks to alleviate that. 

 

f9e.gif

It was a joke you idiot! LOL

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This place never ceases to amaze me...must be the median age or something.  

 

FWIW old man river the truck was lowered and thus riding on the bump stops which didn't allow the shock to travel.  I cut them to allow the relatively new KYB gas shocks to alleviate that. 

 

f9e.gif

 

It's a balancing act. You need suspension travel in order for the shocks to do their job. That being absorbing energy and reducing recoil from a bump. Suspension travel increases risk of bottoming out on a lowered vehicle. I've seen this before where the vehicle is riding on the front or rear rubber bump stops. Basically you are bottomed out for travel and the energy is transmitted to the air filled tires which are bouncing balls.

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