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#1059429 - 10/16/18 02:24 AM Raising/relocating front inner fenders  
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Lincoln7 Offline
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Lincoln7  Offline
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hampton roads, VA
I am experiencing some tire to inner plastic fender rubbing during suspension compression at speed. Worse now with 255/45R17 up front. I found a thread where Sickspeed mentioned he relocated his inner fenders (I assume for this reason as he's running pretty low). My front fenders are about 25.5" from the ground right now. Does anyone have any info on relocating/raising the inner fenders for more clearance?


[Linked Image]
86 MCSS 408sbc, T56, 8.5" 3.73 posi 12.3 @ 113mph, 23 mpg hwy
#1059466 - 10/18/18 01:05 AM Re: Raising/relocating front inner fenders [Re: Lincoln7]  
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mrengineer Offline
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The D, MI
Over the years I tried a few things but none to my liking. There is no good way to attach the stock liner to the fender from my perspective that I liked when running larger tire and lowered. I also have 255/45/17 with ATS spindles and 25" to ground as measured from the lip. Suggest also changing the liner fasteners, two at the top, to a button head type as its a little easier on the tires when pushing it hard. In the end I am living with the contact and will change the inner liner when I burn through them.


Mr. Engineer
#1059470 - 10/18/18 04:21 AM Re: Raising/relocating front inner fenders [Re: mrengineer]  
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Lincoln7 Offline
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hampton roads, VA
Good tips on the button head fasteners. I think I'll do that and have a spare set of liners on hand when they're spent. I added the Blazer ZQ8 jounce bumpers some time ago and they did help me a bit on minimizing the contact.


[Linked Image]
86 MCSS 408sbc, T56, 8.5" 3.73 posi 12.3 @ 113mph, 23 mpg hwy
#1059473 - 10/18/18 05:27 AM Re: Raising/relocating front inner fenders [Re: Lincoln7]  
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mmc427ss Offline
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Pottstown, Pa
When you go that low up front driving the tires into the inner wheels is the result. Going to a much higher rate spring will slow the compression down, like a 1000 IROC spring. But who needs that. Better adj compression shocks can help slow things down too.
I run a 640 spring, ZQ8 stops, 26" tires at 26 1/2" ride height, have no rub and have airborned the car a few times. But that's me, can't run those very low ride height numbers around here.

Take a look at some of those really low autox cars, they run no inner wheels, the UMI Green Machine and the 72 Pontiac have no inners,

The 67 Camaro I play with occasionally has the rub problem because he wants it to ride better, soft coil over spring and low compression setting on the Viking shocks, we replaced the inner bolts to help the rub, a little.

Thankfully now new inners are being re-popped. New NOS have been gone for many years
Bob

#1059482 - 10/18/18 04:02 PM Re: Raising/relocating front inner fenders [Re: Lincoln7]  
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SSLance Offline
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Peoria, AZ
I used an Eastwood fender roller to push my inners up a bit. Not quite conventional but I was desperate for any room I could get. I took the bolts to the metal fender out, pushed that part of the inner up until it passed the metal lip and it stuck there. Gained me about a half inch at the very top. It still rubbed, so this was my alternative fix.

[Linked Image]


Lance
1985 Monte Carlo SS Street Car
#1059684 - 11/01/18 10:41 PM Re: Raising/relocating front inner fenders [Re: Lincoln7]  
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Lincoln7 Offline
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hampton roads, VA
Thanks for the insight, fellas. I'm running Eibach springs up front (which I believe are in the mid-600# neighborhood?), Bilstein HD shocks, and the ZQ8 bumpstops. I think it rides quite well so I'm not ready to change over to coilovers yet but I know I will eventually get there. I like the idea of rolling the inner fender lip in/up to help raise the fenderwell. I will swap to button head bolts before or during this modification to help things. Nice to know more inner fenderwells are available!


[Linked Image]
86 MCSS 408sbc, T56, 8.5" 3.73 posi 12.3 @ 113mph, 23 mpg hwy
#1059687 - 11/02/18 01:53 AM Re: Raising/relocating front inner fenders [Re: Lincoln7]  
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86ttop Offline
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Not sure what SSon20s did, you might look some of his posts to find out. He hasn't posted here in a long time though, good luck!


Leo Paugh
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#1059688 - 11/02/18 02:14 AM Re: Raising/relocating front inner fenders [Re: Lincoln7]  
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spacemanspif Offline
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Search for member “bagnut” as well. I can’t remeber what member has his car now but it’s another member. Years ago I remeber sickspeed mentioning that the cutlass has a different inner that might lend itself to adusting better than the Monte ones. As with most things there is no perfect solution.


-Mike

F-body bucket seats, camaro console, carb'd 5.3/4L80E swap

Fastest time to date: 13.671 @ 103.79
Best r/t: 0.007 I got lucky smile

Killed a few cones too

#1059708 - 11/04/18 03:30 PM Re: Raising/relocating front inner fenders [Re: Lincoln7]  
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Lincoln7 Offline
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hampton roads, VA
Thanks for the member names. I found a thread from Bagnut that shows he used what looks like trailer fenders as inner fender wells. Decent amount of chopping done but definitely effective.

http://www.montecarloss.com/community/ubbthreads.php?ubb=showflat&Number=1016605&page=3


I'll see what I can dig up on SSon20s as I don't need THAT much more clearance on my setup


[Linked Image]
86 MCSS 408sbc, T56, 8.5" 3.73 posi 12.3 @ 113mph, 23 mpg hwy
#1059749 - 11/08/18 01:44 PM Re: Raising/relocating front inner fenders [Re: Lincoln7]  
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thepezking639 Offline
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Livonia, MI
Originally Posted by Lincoln7
Thanks for the member names. I found a thread from Bagnut that shows he used what looks like trailer fenders as inner fender wells. Decent amount of chopping done but definitely effective.

http://www.montecarloss.com/community/ubbthreads.php?ubb=showflat&Number=1016605&page=3


I'll see what I can dig up on SSon20s as I don't need THAT much more clearance on my setup


I dont know if corey browning is on here, but he runs cut up trailer fenders too. Looks really good.


86 SS 6.0L LQ4, TBSS GEN IV intake, 92mm TB, 30lb injectors, Summit Stage 3 NA Cam, Stainless long tube headers, Stainless 3in exhaust, Microsquirt ECU, Built 200-4R, B&M Megashifter, Torsen LSD, QA1 Lvl 3 Suspension Kit, UMI Front & Rear Braces. Check out my build thread: http://www.pro-touring.com/threads/126188-SSLOW6-0-Build
#1059751 - 11/08/18 03:09 PM Re: Raising/relocating front inner fenders [Re: Lincoln7]  
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MC96 Offline
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St. Johns MI
^ Corey did an awesome job on his.


86 SS
400SBC, 4l80e, MSD Atomic injection/trans controller, Tilt glass clip, all tubular arms, corvette brakes, 9" rear
In progress
#1059771 - 11/09/18 01:44 PM Re: Raising/relocating front inner fenders [Re: Lincoln7]  
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ss4ever Offline
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I used to have the same problem years ago with my 88SS. The setup that works best for me is Moog 5660 springs with one full coil cut off the top for my ride height and bilstien shocks all the way around. I tried Eibachs and I also tried drop spindles, neither worked for me without tire rub. The springs and shocks listed are what I am running on my 83SS as well with 17x8 wheels with 245/45R17 tires and they have never rubbed.


1983 Monte Carlo SS Turnkey ZZ4/700R4, Dakota Digital Instrument Cluster, 77k mile car. Many more mods to come soon.
#1059861 - 11/15/18 04:38 PM Re: Raising/relocating front inner fenders [Re: Lincoln7]  
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SickSpeedMonte Offline
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MD
All I did was bend the tabs that mount the inner fenders to the inner structure of the fenders and drill new holes.

Cory is on Facebook/Instagram these days. He runs the G Body Nation page on FB if you need to find him.


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