Quick Bumpstop Spacers (1 Viewer)

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

Joined
Sep 6, 2003
Threads
186
Messages
3,183
Location
Tulsa, OK
The new tires rub at full compression in the rear, so I dropped the bump stops 1.375" in preperation to add the L shocks. Pretty simple, 3/16 x 2" flat stock on top and bottom, 1"x1" square tube in the middle.
bump space.JPG
 
Can't tell, did you close the ends of the square tube? If not, it might fold under impact.

-Spike
 
FJBen said:
Thats what I'm getting steel for today and I'm going with 1/4" wall just to be safe.

Probably a good bet. I went with what I had available to make it over the 1-1/4" OME says you need for L's. I need to flex it out again and see if anything rubs. If it does I may need to go for a full 2" drop.
 
as long as your at 10 gauge or lower, no need to "close the ends"

Have you looked at the thickness of your frame lately?
 
Forgive me, but why not simply go wtih 2"x2" or 1.5"x1.5" tubing and longer bolts? I think most of us are simply going with a 2"x2" tubing for extensions. Just a thought!
 
alia176 said:
Forgive me, but why not simply go wtih 2"x2" or 1.5"x1.5" tubing and longer bolts? I think most of us are simply going with a 2"x2" tubing for extensions. Just a thought!

Used what he had? Looks functional if nothing else.

BTW, is the rear the only place the 315s rub at full stuff stock?
 
alkaline747trio said:
Used what he had? Looks functional if nothing else.

BTW, is the rear the only place the 315s rub at full stuff stock?

It's more for the fact you'll be killing longer shocks without lower bumpstops. The rubbing if anything is quite minimal and most likely is the mudflap.
 
alkaline747trio said:
So 315's really do fit on a stock rig?


I think that's pretty subjective...LOL...yes they do "fit" but definitely is not optimal. There will prolly be enough rubbing to catch hard sometime and possibly rip a flare off. The 285's/305's seem to be about as far as I would run on a stock suspension.

Then again all 80's are different...some may fit with a lot less rub than another. All tires are different sizes as well. He stated the Mickey Thompsons MTZ measured 34" in height....I'd imagine the Trxxus are every bit of 35".

If you just want to run them temporarily like walking eagle until the lift comes in, then I see no issues. If you want to run it like this forever...then you had better change some other things before the 315's self modify. :grinpimp:
 
alia176 said:
Forgive me, but why not simply go wtih 2"x2" or 1.5"x1.5" tubing and longer bolts? I think most of us are simply going with a 2"x2" tubing for extensions. Just a thought!

Didn't have any 1.5" sqr around the garage - and it's so easy to borrow a good supplier's design.

If you go 2x2 you're giving up .75" of suspension compression with L shocks according to OME's recomended spacers - from Slee's site

"Fitment of N73L/N74L shocks requires mandatory installation of .75" (20mm) Front and 1.25" (30mm) rear bump stop spacers to the front and rear suspension to prevent shock absorbers from bottoming out under full compression."

Slee's gonna start charging me every time I quote that :)

Maybe .75" isn't that much, but why cut yourself short? One reason is to keep bigger tires from rubbing. My MTZ's are on the short side of 35", though since I haven't measured any other 315's on an 80, don't have much to compare to. If they don't rub with only 1.375" spacer, I'll leave them. If they do, I'll put in 2" spacers and give up that little bit of extra up travel.
 
Another thought is that the bumpstop is made of rubber...so you will get some "squishyness" with it. I'd imagine you are giving up less than .5" by the time it's said and done. Especially if you are coming down hard off of something to stuff that tire, i'd rather have the fudge factor.

The rear suspension has enough travel that .5" upwards loss isn't going to make any difference.

The front I would try and get as close as possible...LOL
 
FJBen said:
I think that's pretty subjective...LOL...yes they do "fit" but definitely is not optimal. There will prolly be enough rubbing to catch hard sometime and possibly rip a flare off. The 285's/305's seem to be about as far as I would run on a stock suspension.

yep - if you call call this fit, then, ya', they fit. You could theoretically run 1" coil spacers (I have them all around right now, threw them on for ships and giggles) and 1.25" bumpstop spacers, and L shocks. You'd have the same total travel as running L's and J's, just would ride alot lower, and have more down and less up travel.

Oh, the mud flaps are off as of last night. I caught the one pretty good in this photo backing up, and it bent enough to stick out. Sitting in the corner of the garage they don't catch the tires.
stuff.JPG
 
FJBen said:
Another thought is that the bumpstop is made of rubber...so you will get some "squishyness" with it. I'd imagine you are giving up less than .5" by the time it's said and done. Especially if you are coming down hard off of something to stuff that tire, i'd rather have the fudge factor.

The suspension has enough travel that .5" upwards loss isn't going to make any difference.

I'm assuming that if OME, one of the most respected and conservative suspension manufactures around (IMHO), says 1.25", they've accounted for the compression of the bump stop. But you know what they say about assumptions.
 
FJBen said:
The front I would try and get as close as possible...LOL

ya, the stupid part there is I got 2" bumpstop spacers coming for the front cause that's what's available, and I don't want to have to build those. And that's a 1.25" wasted.
 
Last edited:
Can you post some pics of the front ones as well?
 
alkaline747trio said:
So the rear is the only place that gets the rub?

I didn't get any rub on the front, but I'm not sure I fully compressed the front either. Probably should do the reverse (rear tire up on that ledge) to try and force full compression and then swing tires left to right to check. Want a little spare room too for when bouncing over stuff compresses the bumpstop.


Mickldo said:
Can you post some pics of the front ones as well?

Once I get them and install them, sure. Slee's are just 2" thick pucks as far as I can tell from the photos on his site. I'm getting mine from MAF - they don't have them on thier web site yet, but when I talked to Steve when ordering some other stuff he said they had them. I don't even know what they'll look like, but I like spreading my supplier support around, and trying new stuff.
 

Users who are viewing this thread

Back
Top Bottom