Thread: Exhaust System Bolts

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  1. #1 Exhaust System Bolts 
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    Hey all, I am going to be installing a ZZP down pipe and a new resonator, the bolts that connect the down pipe to the factory resonator are severely rusted and will need to be replaced. I am curious what size and length i need to get that will work properly. Any info would be greatly appreciated, thanks!
    00 Red GT - ZZP PCM, ZZP HV TB, TRANSGO kit, GMPP Sway Bars, Strut Tower Braces,
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  2. #2 Re: Exhaust System Bolts 
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    youre putting in a new resonator and downpipe right just get some big bolts that fit in the holes and get them long enough that they go thru the flanges of your new items get some nice ones with corrosion protection if you can and make sure you tighten them down to spec according to the bolt maybe get a fine thread for more torque. you can do it all while the new parts are off the car
    2004 gtp SD headers, e85, #60 injectors, Walbroh 255lph, junkyard custom fender well intake, lq4 MAF, 2.8 Pulley, 1.95 rockers, l76 springs, ssic w/ vw rad shift kit and tranny cooler 275/45r17. BMR trailing and rear control arms, zzp STB's, tubular control arms, Dorman and Addoco sway bars, intense coilovers, all poly. avid av-20s
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  3. #3 Re: Exhaust System Bolts 
    GXP Level Member GTPpower's Avatar
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    I think they are m10-1.50.

    But most likely you will break them off when trying to remove them. I usually end up drilling them out and just using a pair of 3/8" bolts for the connection.
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  4. #4 Re: Exhaust System Bolts 
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    Ya the reason I am installing a new resonator with the down pipe is because the flange from the down pipe to the resonator is all rusted together and everything, still have all factory hardware down there
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  5. #5 Re: Exhaust System Bolts 
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    yea mine snapped clean off with the flange lol I just had someone weld the pipe to the new flange
    2004 gtp SD headers, e85, #60 injectors, Walbroh 255lph, junkyard custom fender well intake, lq4 MAF, 2.8 Pulley, 1.95 rockers, l76 springs, ssic w/ vw rad shift kit and tranny cooler 275/45r17. BMR trailing and rear control arms, zzp STB's, tubular control arms, Dorman and Addoco sway bars, intense coilovers, all poly. avid av-20s
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