Offroad Trailblazers and Envoys

Front Fender Well Mod

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by Lauron » Tue Sep 18, 2012 11:19 pm

Even though I have a 3" suspension and 3" body lift there are a few rubbing locations to be addressed. Fenders were trimmed and the body behind the front wheel has the foot well projection that will touch, so it had to go.

Stock picture and cut out shows the amount of extension removed. My son used a small MIG welder to fill in the flattened cut out. Welding is a two man job. The sealant catches fire so, one person needs to closely watch the inside and put out the fires.

I am trying to retain the wheel well liners. Still a few rubbing places to work through both front and rear.
Attachments
Stock Fender Well.JPG
Stock Fender
Stock Fender Well.JPG (33.35 KiB) Viewed 24118 times
Well Cut out.JPG
Fender cuts to fold in and weld
Well Cut out.JPG (29.02 KiB) Viewed 24118 times
Welded Fender Well.JPG
Welded up fender
Welded Fender Well.JPG (28.73 KiB) Viewed 24118 times
Lauron2002 TrailBlazer LT, 3" MarkMc Suspension Lift, 3" Mark Mc Body Lift, Falken WildPeak 315 - 70 17 Tires
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by fishsticks » Wed Sep 19, 2012 12:56 am

I've considered tubbing the front firewall there as well, but the rubbing is so minor it didn't seem worth it. I'm actually running LESS overall lift than you are right now and still don't have a problem. I rub on the frame more than anything.

Were you rubbing badly there?
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by Lauron » Wed Sep 19, 2012 8:33 am

Donny, before I got the WildPeak AT's, I mounted and tried these old Nitto 33's. I could see the 315" were going to touch.

Right now the liner, yes I still have them on :facepalm: , is rubbing just below this cutout section but I haven't fully flexed the suspension yet.

The liner is not snug to the fender wall. I plan to cut the bottom of the fender "T" section, fold it back and attach the liner to it. I did the same on the front so I think this will be the only rubbing point.

Ron
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Nitto tires.JPG
Nitto tires.JPG (39.11 KiB) Viewed 24091 times
Lauron2002 TrailBlazer LT, 3" MarkMc Suspension Lift, 3" Mark Mc Body Lift, Falken WildPeak 315 - 70 17 Tires
Build: http://forums.offroadtb.com/viewtopic.php?f=25&t=3611
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by HARDTRAILZ » Wed Sep 19, 2012 9:17 am

Thats where i need to trim as well.

I touch the frame but did not w the 15s so thinking about changing back to 3.5 inch backspacing and 8 inch wide wheels in dpting.
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by JCrayton99 » Wed Sep 19, 2012 9:41 am

List of things to do......
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by Lauron » Wed Sep 19, 2012 8:56 pm

Wheel size and offset was a time consuming debate I had. Wide tires extending far out side the fender of course makes the rubbing problem worse. This concern caused me to go for the 3" body and suspension lift.

My wheels are 8" wide with 18 mm offset ( ~ 3.8" backspacing) Availability of wheels and tires caused me to end up with the greater clearance on the UCA than I could have gotten away with. I did want to go tighter because of tire stick out. As it turned out, the 315's are not too far out to hopefully not have the police to stop me. We are allowed 2" out side.


So there still is a list: rubbing, protection, winch, survival .... the trails have to fit in there some where! Snow and the winter is coming :lol:
Attachments
UCA Clearance.JPG
UCA Clearance.JPG (34.54 KiB) Viewed 24061 times
Tire Stickpout.JPG
Tire Stickpout.JPG (35.5 KiB) Viewed 24061 times
Lauron2002 TrailBlazer LT, 3" MarkMc Suspension Lift, 3" Mark Mc Body Lift, Falken WildPeak 315 - 70 17 Tires
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by jeffgutierrez » Thu Sep 20, 2012 9:47 am

Do you have any more pictures of your TB? My plan is to also go with Markmc's 3" suspension and 3" body lift.
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by Lauron » Fri Sep 21, 2012 12:26 am

I am using stock springs all around. The spacer gives you the lift without have to go to the stiffer springs for added height. I have 2" of up travel on the front before I run into the topping out of the shock. This initial install of the spacer on the old shocks was a challenge and as you can read many had problems with the spacers ballooning. My conclusion is you have to make sure the shock stud is fully made up. We used a shop wall mount compressor. The strut length picture shows the lifted strut is a little longer because the shock end is inside the spacer. The spring is much more compressed.

With the 3" body lift, I did not have to cut the body panel to flip the UCA. But it leaves a big gap open to the engine. So I filled the gap with a plastic liner bolted in with the wheel well liner. You can see how big the gap is on the fender cut out pics.

On the front, the plastic bumper is a cut clean. On the back of the front fender, I trimmed and folded over leaving a 3/4" lip. Both started about 2" at the bottom.

At the rear, under compression, the tires will likely rub front inside. I haven't yet figures out how I will make some more room there.

I will be doing some more cutting on the front and the rear this weekend so these will come later.later.
Attachments
Strut size.jpg
Lift gap fill old pic.JPG
Lift gap fill old pic.JPG (30.9 KiB) Viewed 24019 times
Nitto 33's.JPG
Nitto 33's.JPG (38.03 KiB) Viewed 24019 times
Lauron2002 TrailBlazer LT, 3" MarkMc Suspension Lift, 3" Mark Mc Body Lift, Falken WildPeak 315 - 70 17 Tires
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by fishsticks » Fri Sep 21, 2012 1:28 am

Lauron wrote:At the rear, under compression, the tires will likely rub front inside. I haven't yet figures out how I will make some more room there.


Longer rear control arms. Two vendors on here sell them.
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85 Hilux - 3RZ, dual cases, caged, 40s, chromo everything
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by navigator » Fri Sep 21, 2012 9:49 am

I almost think he meant the rear of the front fender well.
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by HARDTRAILZ » Fri Sep 21, 2012 9:56 am

navigator wrote:I almost think he meant the rear of the front fender well.

Nope.

I think fish's answer will help him.
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by navigator » Fri Sep 21, 2012 10:59 am

you guys are right (as usual), I went back and re-read his post.
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by Lauron » Fri Sep 21, 2012 12:06 pm

I appologize for this thread covering way too many topics.

It is correct, I was referring to both the front and rear tire clearance/rubbing problems.

This pic shows the rear. No rubbing currently but with flex it will touch on the inside, front edge. This is the drivers side rear.

So yes longer control arms would help. I am hoping to not have to go there. We will see.

Thanks,
Ron
Attachments
Rear Tire Clearance.JPG
Rear Tire Clearance.JPG (31.41 KiB) Viewed 23939 times
Lauron2002 TrailBlazer LT, 3" MarkMc Suspension Lift, 3" Mark Mc Body Lift, Falken WildPeak 315 - 70 17 Tires
Build: http://forums.offroadtb.com/viewtopic.php?f=25&t=3611
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by fishsticks » Fri Sep 21, 2012 12:14 pm

Lauron wrote:So yes longer control arms would help. I am hoping to not have to go there. We will see.



You will. I tried everything to get them not to rub there. I removed bolts, I cut, I begged and pleaded, I threatened.


If you're looking to go the cheap route, you could cut and sleeve your existing control arms (or buy a couple sets of stockers that I'm selling in the classified section). I was going to go that route originally until I snapped up a used set on here.
11 Silverado LTZ - 6.2L/6l80, 2/3 drop, self tuned
85 Hilux - 3RZ, dual cases, caged, 40s, chromo everything
02 TrailBlazer LTZ - 35s, lockers, balls - Gone but not forgotten - Build
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by Lauron » Fri Sep 21, 2012 1:01 pm

Hey Donny, guess this is not what I wanted to hear but do appreciate your experience and effort to make it work. You are running the 35's, a little bigger than the 315's. Would this make enough of a difference?

Ron
Lauron2002 TrailBlazer LT, 3" MarkMc Suspension Lift, 3" Mark Mc Body Lift, Falken WildPeak 315 - 70 17 Tires
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by HARDTRAILZ » Fri Sep 21, 2012 1:03 pm

Lauron wrote:Hey Donny, guess this is not what I wanted to hear but do appreciate your experience and effort to make it work. You are running the 35's, a little bigger than the 315's. Would this make enough of a difference?

Ron

My current 315s are about an inch taller than my previous 35s....
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by fishsticks » Fri Sep 21, 2012 1:10 pm

Lauron wrote:Hey Donny, guess this is not what I wanted to hear but do appreciate your experience and effort to make it work. You are running the 35's, a little bigger than the 315's. Would this make enough of a difference?

Ron



I ran a set of 315/70/17 BFG ATs for awhile. The problem wasn't as pronounced, but it was still there. For comparison, with the 315s I would rub when flexing off road, the 35s would rub when I went over a bump on the freeway. I run Treadwrights like Kyle and they run a little big compared to other 315s or 35s.

The problem is not just the inner part of the liner... You will rub where the body bolt is in the center as well.
11 Silverado LTZ - 6.2L/6l80, 2/3 drop, self tuned
85 Hilux - 3RZ, dual cases, caged, 40s, chromo everything
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by Lauron » Fri Sep 21, 2012 1:26 pm

OK, I know what to look for short term and the longer term fix.

Thanks,

Ron
Lauron2002 TrailBlazer LT, 3" MarkMc Suspension Lift, 3" Mark Mc Body Lift, Falken WildPeak 315 - 70 17 Tires
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by Lauron » Mon Sep 24, 2012 10:13 pm

OK from original front fender well, we have progressed to rear and the wheel well mods. I have taken the mods to the flex test. The extended suspension pic shows that I removed the wheel well liner and on the inside front edge of the wheel well removed a section of the wheel well I thought might rub( see the black paint). I didn't check if it would rub without the liner. Liner out and cutoff grinder at hand, an easy removal. Also pounded in the bolt that attaches the bottom plastic trim to the body. With these mods and the 3" body lift, I do not have any rubbing. Sway bars are still connected but a fair bit of articulation with the 5125's. So far so good. But probably not done yet.
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Rear Compressed.JPG
Rear Compressed.JPG (35.54 KiB) Viewed 23885 times
Rear Extended.JPG
Rear Extended.JPG (36.65 KiB) Viewed 23885 times
Rear Flex.JPG
Rear Flex.JPG (34.04 KiB) Viewed 23885 times
Lauron2002 TrailBlazer LT, 3" MarkMc Suspension Lift, 3" Mark Mc Body Lift, Falken WildPeak 315 - 70 17 Tires
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by fishsticks » Tue Sep 25, 2012 4:48 pm

Looks good. How much clearance do you have between the tire and front edge of the fender?

I ask because while it may not rub when you cycle the suspension statically, you may get a little rub due to bushing deflection when under power. It will be minimal though unless your control arm bushings are shot.
11 Silverado LTZ - 6.2L/6l80, 2/3 drop, self tuned
85 Hilux - 3RZ, dual cases, caged, 40s, chromo everything
02 TrailBlazer LTZ - 35s, lockers, balls - Gone but not forgotten - Build
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