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remove the inner fenders?

Discussion in 'The Garage' started by ramjet gmc, Mar 11, 2007.

  1. ramjet gmc

    ramjet gmc CK5 Staff Staff Member Moderator GMOTM Winner

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    How many of you have removed the inner fenders? and pics what are the pros and cons?
    my k5 (off road only) and i am not a mud pit guy but i will get in it on the trail :wink1:
     
  2. readymix

    readymix 3/4 ton status

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    I removed mine out of need when I trimmed the fenders. Not sure of any pros other than better cooling for the engine bay...

    Here are the cons I have noticed so far.
    - More mud and dirt get all over the engine
    - Now I can hear all of the wierd noises my engine makes.
    - fenders flap around a little in the wind. Not near as bad as the rear fenders though.
     
  3. UPS

    UPS 1/2 ton status

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    I wouldn't if you do any mud. I think it would make a mess of the engine.

    Mike
     
  4. FOR MUD

    FOR MUD 1/2 ton status Premium Member GMOTM Winner

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    I was thinking about this the other day. If it does cool better with out them why did GM put them on in the first place? I wonder if it works like the fan shroud, making the air move to where it's needed. If you have ever run without a shroud you now what I mean. The air will go right past the engine instead of begin forced onto it.
    By removing the inner fenders I wonder if the air will leave the engine bay before it has a chance to cool the back half?
    Air like water will take the path of lest Resistance.
    Anyway I don't know if any of this is true or not, just thinking out loud.
     
  5. readymix

    readymix 3/4 ton status

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    The engine is not air cooled so it would have a very minute effect on the cooling of the engine itself. If GM had intended for the fenders to aid in the cooling of the block they would have put fins on the block also.

    Not having the inners in place just happens to let the engine bay run cooler....not reverse engineering GM or anything like that.
     
  6. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    I don't run mine. the driver side went first. I took it off to repair the frame after my steering box ripped off and never put it back. the passenger came off some time after that. makes it easier to work on stuff. instead of climbing onto the tire to lean in the engine bay I stand in the wheelwell.

    the engine is going to get dirty no matter what. it's just easier to clean without the inners.

    since you asked for pics, here is a random one I took for something else.

    inner fender.JPG
     
  7. ramjet gmc

    ramjet gmc CK5 Staff Staff Member Moderator GMOTM Winner

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    cool a pas side to the side i am planing on the driver is out and all the parts saved if i need to put it back in
     
  8. lak2004

    lak2004 1/2 ton status

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    Would there be any way to just take out the stock inners and fab up some new ones that will fit with trimmed outters? Just a thought, not sure if its worth it or not?
     
  9. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    anything is possible. my engine bay isn't any dirtier without them.
     
  10. UPS

    UPS 1/2 ton status

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    Gmc4cw,
    Do you wheel in any deep mud? I would think it would cover the engine really bad if you wheeled in deep mud with no inners. My Boggers throw big clumps of mud though, so I am basing it on that.

    Mike
     
  11. AFUFO

    AFUFO 1/2 ton status

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    What if one of those clumps knocks something out?
    Theres your reason to have the inner fenders right there...
    On a road vehicle it might be fine to run without em...but it may affect the aerodynamics for the worse.. also more likely to get water splashed up and ruin your stuff.
     
  12. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    all sheetmetal is expendable. Some simple rubber sheeting of some kind could serve as a mud shield... without being in the way of big tires.

    j
     
  13. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    yes. the inner would collect the mud instead of the inside of the hood. the engine doesn't collect big chunks of mud. with or without the inners the engine gets dirty. water can splash up between the frame rails and the engine. or from between the inners and the frame.

    If all you do is mud then keeping the inners is no big deal. trim the bottom against the cab, mud trucks usually do not have tons of flex. My truck started out as a mudder. I went to the pine barrens monthly, and had boggers. Now I'm getting into more rockcrawling/trailriding. I still hit every mudhole, there is just a lot more big rocks in a days ride. I'm running cut gumbo monster mudders, basically a TSL swamper.
     
  14. sandawgk5

    sandawgk5 3/4 ton status

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    I do not run inners and I have not noticed any cons other than mud but I dont run mud so I dont give a ****. I do notice more heat leaving the engine bay. Mine were removed out of necesity when I cut my fenders.

    I will get some pics up when I get home.

    Ira
     

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