shinjeeg

Hi everybody!!

I need a helping hand here..

I own a 2010 F150 FX4 and I really need to know based on your experience the max. front ride height I can get with the 2.5 Factory Series Coil-over Reservoir from FOX.

My truck is lifted 2.5 " with a rough country spacer kit, for me a 2.5 inch lift is enough, but as you may know adding spacers kits is an affordable way to increase ride height but at last the performance of the front suspension is compromised by both: over extension of downtravel and limitation of up travel of the suspension due to spacer usage resulting in bad handling in some roads or taking curves at speed.

I´ve been experiencing both issues and thats why I decided to upgrade to FOX SUSPENSION but I need to be sure that my truck wont lose ride height.

the part numbers Selected are:

front: 880-02-634 (2.5 Factory Series Coil-over Reservoir)

link: http://www.foxracingshox.com/product...itfit#fitguide


rear: 980-02-411 (2.5 Factory Series Reservoir)

link: http://www.foxracingshox.com/product...ar&m=truck&p=7

thanks in advanced for your help..

shinjeeg

Hi... i followed your thread and did the changes on my truck too. I have a 2011 fx4 installed the camburgs+coilovers+piggybacks...but i still have thud not a hard one but i still can hear it....also with 265/70 r18 tires i have experienced some rubbing between tire and left UCA while taking curves downhill or turning on bumpy roads... can you give me any advice?

yokev

If you're rubbing against your UCA's, you've prolly got too much backspacing. Especially with only 265's.
I had a LONG talk with Jerry the owner of Camburg a couple weeks ago, and they [now] recommend a 265[mm tire] with their UCAs on the late-model F-150, but you need to ONLY go as deep with the backspacing as you have room for.
You have the option of using spacers to push them out if need be.
I would advise ONLY getting the kind that bolt onto your hubs however, as the ones sold at Pep Boys et.al. are pretty cheasy, and take away thread-space on your wheel studs. They're also only 1/4" thick, where the 'real' spacers are at least an inch thick, and at that width you might need to trim your wheel studs.
Edit: As far as the 'Thud' is concerned, I had it with my Camburg UCAs, a buddy has it with his RPG's, and I have it even with my stock UCAs. I think it's more from the Coil-overs then from the UCA's themselves.
BTW..are you running Camburg Coil-overs or Fox or King?

shinjeeg

Hi....thanks for your prompt answer....i have the fox 2.5 coilovers.... now, regarding the spacers what brand you recommend? Do i have to install those on the 4 wheels or just the front? What would be the maximun offset recommended? The studs to be cut are from the 1 inchspacer or the wheels?

Squash1247

My understanding is the thud is actually the lower arm shearing against the steering stop. I have the same issue with my 2011 FX4 with Fox Coilovers and Camburg UCA's. At least this was explained to me once upon a time!

yokev

If your only problem is the front tires hitting your coil springs, then you only need to install 'em on the front.
As far as the backspacing is concerned, I'm ONLY talking about IT, and NOT the offset. Offset refers to the wheel-hub in reference to where it sits in relation to the CENTER of the wheel. Backspacing is the TOTAL distance between the hub and the INSIDE lip. For this purpose, don't worry about offset.
Camburg recommends a minimum of 5" of backspacing, BUT they leave it up to you to only go as deep as to NOT have any contact between the tire and the UCA(s).
How much backspacing do you have? If you're hitting the UCA with 265s, you've gotta be pretty deep.
As far as the spacers are concerned, just make sure they're BILLET. Now days I think all the good ones are billet, as opposed to steel.
The spacer has studs on it for your wheel(s) to mount to, and holes in it for your stock wheel studs to stick through, and nuts to secure the spacer on your existing studs. Say you got inch-an-a-half spacers, but your existing studs are 2-inches long. When you tighten the spacer down to the studs, they're gonna be sticking through the spacer by half-an-inch. With the studs sticking through the spacer 1/2", your wheels won't mount flush to the spacers.
In this case you'd need to 'trim' your stock wheel studs so your wheels fit flush against the spacers.
Just type 'Wheel Spacers' in ebay, and you'll see a ton of 'em. You'll see the various sizes, and pics of 'em so you'll see what I'm referring to.

Paxford

Really curious to see what backspacing (not offset!) you have that results in rubbing on the UCA during turns ... with 265 tires. Sounds like you have the wrong rims for your setup.

I thought you needed a minimum 4.75 backspacing, to run the camburg UCA. I called the shop awhile back and do recall a comment about 5 inch backspacing being the minimum, even though their site at the time said 4.75 backspacing was the minimum. They also said 4.5 backspacing would be best. This didn't instill confidence. In all fairness, every application is different so it's hard to put a one size fits all number for backspacing out there.

yokev

Who's to say you can't get away with 4.75 or even 4.5 for that matter...?
All they're trying to cover with their 'minimum' backspacing is tire rubbing the lower-rear fender well area.. If you clear it with your tire(s) and less than 5" backspacing, then you're good to do.
All Camburg is trying to do is give you a good recommendation of what should work best.

shinjeeg

Hi guys..!!

Ok, i found some spacers billet type, H&R which are made in germany and maNufactured specially for our type of trucks.

Here is the link:
http://www.hrsprings.com/application...ts/11/932/2010

Now, they have available 30 mm , 40 mm and 50mm width spacers. Which you recommend?

In answer to paxton, in ecuador the fx4 came with 17" wheels with 255/70, i changed those for the 18" rims of the 2012 f150.

I am looking for the specs of this rims, if anyone has it i will be grateful.

shinjeeg

Here more photos of my truck.