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Bushing Question

Discussion in 'The Garage' started by JROSS, Nov 10, 2003.

  1. JROSS

    JROSS 1/2 ton status

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    Are the greasable bushing overkill for a stock DD blazer. I was thinking about going with poly bushings and putting the money saved over the greasable one towards shocks. What are your opinions.

    Thanks in advance. /forums/images/graemlins/smile.gif
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    If this is a stock DD, then go with rubber bushings. No reason to deal with poly on a daily driver. The longevity of poly in suspension bushings is absolutely pointless when compared to the 20+ year lifespan of stock rubber bushings.

    That is my *opinion*, and others will disagree.
     
  3. I would go with the poly greasable bushings, you're already in there, why not put the best parts in. If you have soft springs and good shocks you won't notice them over the rubber ones. Plus they won't deteriorate when leaking oil gets sprayed on them (and I doubt that rubber bushings last 20 yrs /forums/images/graemlins/eek.gif). I would use rubber for the body mounts though. If you don't have enough money for the greasable then wait on the shocks and save the $$ for them.
     
  4. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Who sells rubber bushings?
     
  5. thatK30guy

    thatK30guy 1 ton status Premium Member

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    [ QUOTE ]
    Who sells rubber bushings?

    [/ QUOTE ]

    For what specifically? Springs? Body mounts? /forums/images/graemlins/confused.gif
     
  6. dyeager535

    dyeager535 1 ton status Premium Member

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    You can buy them from GM, (and no, they aren't insanely expensive if you buy them online) and IIRC, it was moogs online catalog where I found rubber replacement leaf spring/shackle bushings.
     
  7. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Unfortunately they won't fit my superlift springs though. /forums/images/graemlins/frown.gif
     
  8. JROSS

    JROSS 1/2 ton status

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    /forums/images/graemlins/confused.gif So what is the benifit of the poly if they don't last as long?
     
  9. dyeager535

    dyeager535 1 ton status Premium Member

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    It's not that they don't last long, the thing is that they aren't necessary on a daily driver. (I question if they are necessary at all, since they inhibit suspension movement)

    My comparison was that GM bushings last 20 years typically (and thats without lubing them, unlike poly), how long do you NEED them to last?
     
  10. JROSS

    JROSS 1/2 ton status

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    I don't think length of use is as much as of a concern as ride quality. It's already a 20 year old truck, I will probably only keep it as a DD for another 5 years or so.
    I'm looking for better ride quality, should I invest more of my $ into shocks?
     
  11. TrcksR4ME

    TrcksR4ME 1/2 ton status

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    I have never heard of choosing rubber vs poly in regards to ride quality. I think shocks would be a better thing to look at if that is your main concern. Are your current rubber bushings trashed, or are you thinking of replacing them in hopes of a better ride?
     
  12. JROSS

    JROSS 1/2 ton status

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    The front springs are trashed, got them off a doner front end (I'm removing the PO lift). I figure while I have the rear end out I might as well replace the bushings due to them being over 20yo. I think maybe I'll take another look at the rears to see if its really needed and look into a good set of shocks.
     
  13. TrcksR4ME

    TrcksR4ME 1/2 ton status

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    And if it was me, I'd replace them with whatever is cheaper. I think my rubber bushings are in the 20+ year old club, but they seem to still be working and I am sticking to the if it ain't broke don't fix it plan /forums/images/graemlins/wink.gif
     
  14. dyeager535

    dyeager535 1 ton status Premium Member

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    [ QUOTE ]
    I have never heard of choosing rubber vs poly in regards to ride quality.

    [/ QUOTE ]

    Poly doesn't deflect as easily as rubber, so it will affect ride quality. In trucks like ours, will it be noticeable? Probably not.

    However, IMO, having to grease the stupid poly ones, (or putting up with more squeaks) especially in a DD, isn't a benefit, thats for sure.
     
  15. JROSS

    JROSS 1/2 ton status

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    [ QUOTE ]
    You can buy them from GM, (and no, they aren't insanely expensive if you buy them online) and IIRC, it was moogs online catalog where I found rubber replacement leaf spring/shackle bushings.

    [/ QUOTE ]

    Do you have a link, I did moog searches and came up empty. /forums/images/graemlins/1zhelp.gif
     
  16. MudFlap

    MudFlap 1/2 ton status

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    What is the advantage to poly bushings?

    Trey
     
  17. If lubed frequently, greasable ones don't wear out, give better flex (since rubber ones are joined to the spring eye), and they're impervious to oil (rubber deteriorates when exposed to oil). They'll also give better road handling since they give that much less slop in the suspension.
     
  18. MudFlap

    MudFlap 1/2 ton status

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    Thanks
     
  19. dyeager535

    dyeager535 1 ton status Premium Member

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    Hmm. Can't find anything at Moog either. Odd, because that catalog layout is what I remember when I found them before.

    Oh well. Anyways, if you go to napaonline.com and pick, say, a 1986 K5 4wd, then browse catalog, steering and suspension, you'll start to see the bushings.
     
  20. GMCLegacy

    GMCLegacy 1/2 ton status

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    i know the napa here in town had replacement rubber bushings for my stock rear springs on their shelf.

    chevy duty (www.chevyduty.com) also has them

    front spring

    front 74-082
    rear (shackle kit) 74-036

    rear spring

    74-084 or 74-085 depending on spring eye dia.
     

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