PRG lift, UCA's hitting coil bucket???

KILLswitch · 07-17-2008, 06:17 AM

alright check out the picture attached others are having this problem stock. my problem is the same as this but i got saw's and prg uca's (saw's are crancked to 2.5" of thread). how can i stop the uca's from hitting the coil bucket. they only hit on rapid suspension drop. like hitting a massive pot hole.

**Blackbeauty** · 07-17-2008, 06:25 AM

First off, let's be clear here.. THAT is not your truck, correct? Or if so, it's before any suspension work.

That is STOCK!

Secondly, you 4x4 or 4x2? I'm 4x4 with the SAW's and UCA's... cranked to about 2 1/4" and I have no interference on my suspension.

Can you get a pic of your setup that you say is an issue? I'm having trouble digesting that this is happening with the UCA's....

KILLswitch · 07-17-2008, 06:29 AM

no thats a pic of someone elses with leveling kit, im having the same issue with my 4x4 with prg lift . hitting in the same place i can see the impact marks

where can i buy these? pic attached

**Blackbeauty** · 07-17-2008, 06:38 AM

Well, the part number is right on it... It's just a bumpstop #6052. Comes with several different kits for various trucks...

Before I'd do that, I'd call Greg. I can't see why they're hitting. Although there are some weird trucks out there that have issues that few others do. Some have had issues with the spacers where most don't. Just something that happens, I guess...

KILLswitch · 07-17-2008, 06:42 AM

i think it has somthing to do with being at 2.5" of thread cuz i was at 2" before hitting speedbumps at 45 mph no problem.

**Blackbeauty** · 07-17-2008, 06:55 AM

That might do it.. If you recall in the instructions, 4x4's are not to exceed 2" of thread showing.... I think that's a comfortable, conservative amount... 2.5" might be just pushing the "hit" envelope a bit...

CL 8 2WD · 07-17-2008, 07:05 AM

Quote:

Originally Posted by KILLswitch

i think it has somthing to do with being at 2.5" of thread cuz i was at 2" before hitting speedbumps at 45 mph no problem.

Your 2.5"of thread or (ride height) is just that, and has nothing to do with the amount of droop travel your shocks allow. when you had them set at 2" the UCA was farther away from the bucket, how ever when you hit a bigger bump the shock will still allow the UCA to travel the same distance and do a little banging

Quote:

Ride Height is the height of the vehicle standing still on level ground. Ride height for high speed desert applications usually vary from 30% to 50%. Ride height for slow speed rock crawler applications usually vary from 50% to 70%.
For Tech Room calculators Ride Height (RH) is expressed as percentage of total wheel travel that equals to droop travel. For example if you have 10 inches of travel and you want your ride height to be such that shock compresses 6 inches and extends 4 inches from stand still, then your Ride Height would be 40%. This also means the shock will compress 40% of its travel to support the weight of the vehicle.

Quote:

THESE COILOVERS ARE FOR USE WITH AN AFTERMARKET UPPER CONTROL ARM ONLY!!!
The coilovers offer nearly 4" of lift on most 4wds (3" on 2008+ 4wd) and up to 5" of lift on 2wd (4" on 2008+ 2wd) and are built to our specs by Sway-A-Way. They are designed to extract every inch of travel possible within the confines of the factory lower a-arms/coilbucket. With an aftermarket upper control arm this set-up offers 9" of wheel travel (2 more than stock) and is currently the best performing package per dollar we sell.

they are designed for maximum travel so the tolerances are very small, and you have a titan with a coil bucket welded a hair too high so you need to grind on the bucket

and yeah you need to back off the preload I think the motion ratio is 2 to 1 if you add 1" of preload you will get 2" of lift. So 2" of prelod max on your 06 4x4

Quote:

Motion Ratio is the ratio of shock travel versus wheel travel. It is equal to the Shock Travel (in inches) per 1 inch of Wheel Travel. Motion Ratio is used to account for the different suspension geometries and the resultant mechanical leverage on the spring. In almost all cases, the Motion Ratio is less than 1. In general, if there is a choice, aim for the highest ratio permitted by the wheel travel desired, shock travel available and suspension geometry. This will give you the lowest spring rate possible. Coil springs with high rates are generally not available, have less coil travel, and are heavier.

You can calculate the motion ratio by simply dividing the shock travel by the wheel travel. Example if the shock travels 0.5 inches and the wheel travels 1 inches then the motion ratio would be 0.5/1 = 0.5

For most suspension systems motion ratio varies though out the wheel travel. It is important that you use the motion ratio value at the desired ride height for the accuracy of the spring rate and ride height calculations

KILLswitch · 07-17-2008, 07:22 AM

is it ok to run 2.5" of thread showing on a 4x4 i know others do it. and i think it is just pushing the envelope enough to cause some interference at full drop. if i jack up one side all the way (even at only 2" of thread) the uca's hit the coil bucket.

KILLswitch · 07-17-2008, 07:28 AM

this is a pic of my set up at 2" of thread

KILLswitch · 07-17-2008, 07:31 AM

here is 2.5" the uca's are much closer to the coil bucket. there was a big diffrence .

CL 8 2WD · 07-17-2008, 07:38 AM

Quote:

Originally Posted by KILLswitch

is it ok to run 2.5" of thread showing on a 4x4 i know others do it. and i think it is just pushing the envelope enough to cause some interference at full drop. if i jack up one side all the way (even at only 2" of thread) the uca's hit the coil bucket.

reread my original post I added more info

KILLswitch · 07-17-2008, 07:44 AM

u think 2.25" would be enough to stop them from hitting?

CL 8 2WD · 07-17-2008, 08:00 AM

Quote:

Originally Posted by KILLswitch

u think 2.25" would be enough to stop them from hitting?

the only thing that will stop the hitting is a GRINDER and you have a 06 4x4 2" maximum! Greg's site says almost 4" of lift so 2" of preload might even be pushing it.4x4 are higher than 2x4 to start with so only 4" more. and with too much preload the suspension wont work very well at all, because the shock will always be operating in the extended position and constantly extending to full droop all the time.

KILLswitch · 07-17-2008, 08:08 AM

but i really like the lift i got with 2.5 " . how much would i have to grind it down, any pictures of someone who has done that?

**Blackbeauty** · 07-17-2008, 08:11 AM

You know what you have to do.... Admitting it is the first step...

That little edge on the coilbucket that rolls over to stiffen it, that's what you need to weaken...er... I mean grind....

Personally, I'd crank the SAW's down a bit and live with it.