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How-to: Timbren Bump Stops - PBR

121983 Views 262 Replies 78 Participants Last post by  Old Navy
It's hard to spend money on a no see Mod, but this one is well worth it in handling!

I bought it to increase towing stability as I tow a dozer at times and a boat a lot.

The handling was a gigantic BONUS! Hindsight I'd do it just for that!

PS: I tried AIR LIFT Spring kit, don't waste your money it limits Droop!
Timbren don't!

EDIT 05 of 2007 Well here is my best example of Timbrens in action, this is a part where Autozone Bumpstops won't hold up. But you can clearly see and hear the comment from bystanders who are surprised I did not bottom out, Daystar Spacers, factory Shocks with 35K miles on em and Timbren bumpstops. Click link and play.


.......... And people act like they have no use wheeling, I won't wheel without them.

What it is and what it does can be found here: Home - Timbren Industries Inc. Suspension Products
In short, for me, increased towing capability, much much better handling without.

Rear sway bar installed, and Cure for nose diving front end with winch and winch bumper. PLUS, if you haul things on a roof rack on top, you WILL notice more stability with this mod for sure!!!

Restored all handling characteristics that the 2.5 inch lift took away. F&R Totally!

Where purchased: http://www.truckspring.com/
Vendor gets A+++ Good e mail contact, read notes on Internet order,
went out of way to make sure I got the right kit with spacers for rear.
Good ship notification and quick ship!

Kits cost $154.00 each. $309.00 for both FREE SHIP special.

Front Kit is Timbren part no NF-1004A (You must drill out hole to 1/2 in.)
Rear kit is a Jeep kit, JRC01 With a Spacer (Shown) Fits perfect!

Lets start with front, before install, really no problems. But after install a really noticed much more stable front end especially on corners and under heavy braking. I'd say this kit is a MUST if you install a Winch bumper that really does have a winch in it.

Here is a pic of Front old and new. (Parts)


Jack up vehicle, support, 1/2 in deep socket to remove old bumpstop.
You must then drill hole on lower Control Arm out to 1/2 in. with a drill.
Put washer on bolt, install in hole, add washer on top of LCA then Timbren Bump stop, tighten. 10 min Max, no need to remove wheel.

Before front, old stuff it almost looks like pure metal but it is rubber.


New installed on front. Notice the clearance now, any tip and Timbren takes over! This is taken with weight of vehicle on the suspension. It is
riding just as Timbren instructions say. Even can rest on LCA.


Rear old and new parts.


No need to remove wheels but makes it a lot easier.

Jack it up, Support, remove wheel. Remove old bumpstop with a 9/16 socket
Clean the area, holding Timbren in your hand, offset goes outboard (If you install it wrong, it will hit top of U bolts when compressed, it should fall between them.) Install bolts, snug them, now whack Timbren to rearmost position. Tighten. Check alignment from side and rear, install tire and check for proper clearances.

After rear from rear.


What's left over & what it took to do the front and rear install.


After a very rugged test drive (lots of fun) Panic stops, Curves, Incline walls, drop offs, parking lot tricks, pushing to the max! No noises, silent operation, and outstanding stability for a lifted vehicle!!!! I got my X back!

Thanks for looking. And thanks to Timbren for time on phone and Truckspring.com for extra effort getting me the right kit 1st shot!
If you do the Mod, and I missed something, PM me and I will add.

UPDATE Thanks to B Slater who tried these, (Pictured Below) Autozone Bump stops for front. he said it's a go, he put them on, by looking at them he thought they would not work too stiff, but after an install and a ride, he's impressed, you might be also, It's a cheap try out at $10 and 20 Min to install, I'd imagine you can chop the tops off a bit, but Slater says they work as is! Old parts can be re installed if you don't like it or want more travel for a OR event.


EDIT 06 12 06
Ok I did some flex testing today. Took some pictures, I'll let them explain. But, I'll leave em on when I wheel, Since I sissy wheel. In My "S" Full view of position.


The Extended side.



What they do when they get stuffed.


Ok now you have all the info, you decide. I find it is a perfect solution for all around driving, towing, road, and off road, but not so off road you blow your difffs.

ADDED 10 06 I have over 20K on this MOD flawless would not do without it!

MC
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Suspension Lift & Timbren = 1 inch gap

Standard Suspension & Timbren = No gap

No mistery there...
eXTra fORt said:
Suspension Lift & Timbren = 1 inch gap

Standard Suspension & Timbren = No gap

No mistery there...
I was going to say that. MC is 2" taller in the back. It has nothing to do with the shocks as shocks don't raise or lower the vehicle.
I was looking at my pictures, Before Daystar I took picture of height, and after. I got like 2.5 lift front and almost 3 in Rear. But, I do say what I have in my Timbren how to. Of course it would b different if you don't have a lift. All I know is it handles great with the Timbren. I did get a chance at some off road last week. Yep, you give up the stuff, but it's a squishy give up. I'd have to run some places I did before I put em on to see the real difference.

MC
Not to send it off topic, but it is odd that people are getting more than 2" out of the Daystar lift.
Muzikman said:
Not to send it off topic, but it is odd that people are getting more than 2" out of the Daystar lift.
Hmm. I thought the shackle only lifted 1.5"?
The Daystar shackles are 2" (the AC and Calmini are 1.5").

The Spacer for the Daystar are 2" or at least that's what it says on the side of the box. But people are getting 2.5"+ out of them.
Muzikman said:
The Daystar shackles are 2" (the AC and Calmini are 1.5").

The Spacer for the Daystar are 2" or at least that's what it says on the side of the box. But people are getting 2.5"+ out of them.
Sounds like some fuzzy measuring technics.
I got a solid 2" out of the rear and almost 2" in the front.
B Slater said:
I got a solid 2" out of the rear and almost 2" in the front.
Those are the numbers I expect to hear.
Muzikman said:
B Slater said:
I got a solid 2" out of the rear and almost 2" in the front.
Those are the numbers I expect to hear.
Cool. I am still way up in the air which freakin lift is best. Or what combo is best.
I personally think the AC coils up front and the Daystar shackles in the rear is the best combo.

The AC breaklines are nice and work well.

Avoid the Bilstein shocks that AC sells. I still can't get the bottom bolts to the 127ft-lb that they should be and the rubber insert was squashed. I am going to put a 2nd nut on and lock them together and only torque them down to about 80ft-lbs and hope it holds.

I will also be installing the Calmini 1.5" AAL in the back. I want this to stiffen up the rear end as with the coils up front the back is a little mushy. I would go with the Timbren bump stops, but I don't tow and I wheel a good bit so I think they would do me more harm than good.
I am thinking about going with the AC coils up front. I think my front is a little "squishy", of course I think the back is too.
I loved th ride with the AC coils and AAL's, but I couldn't take the vibration any more.

I think the coils are needed if you go with a steel bumper and winch. With the coils I don't even notice they are up there.
Now that I've added the shrock front and winch and,and on and on I think my front has returned to stock heighth :angry2: What to do....
B Slater said:
I am thinking about going with the AC coils up front. I think my front is a little "squishy", of course I think the back is too.
Trader! JK Wait until you do the Timbren. Then decide. Timbren up front cures any brake dive ya get. MC
I am trying the Timbrens.....and step 2 is the AC coils. I really really hope I don't make it to step 2. I would rather buy some more lights!
The problem is if you actually wheel the Timbrens up front are going to limit an already limited front suspension.
True - but they bolt on in under 15 minutes, so I figure I can do that before I go wheeling. I am on the same side as MC, I wheel maybe 5% of my total miles.
Gotcha.

I wheel probably less than that when you are looking at actual miles, but I do wheel a lot.
UPDATE

I installed the Autozone bump stops and they work wonders! Anyone that has the Daystar lift must install these. They will make your X ride like it isn't lifted! I can't stress how good these are. In fact the first person with the Daystar lift installs them and takes a picture I will Paypal you the $$ for them. Thats right 100% no obligation.

I also need to say SORRY MC!!! You were right these things work good.
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