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exhaust mainfold bolts

Discussion in 'Trucks and Trailers' started by Moose's Mowing, Apr 16, 2012.

  1. Moose's Mowing

    Moose's Mowing LawnSite Senior Member
    Messages: 452

    Anyone else ever have to replace these things. A god buddy of mine works at a custom exhaust fab shop and they don't even mess with these. they send them out to another shop. He said all pickups do it frequently (Chevy, Ford and Dodge) and says the Fords are the worst to fix. Mine was on an 04 Chevy 2500 6.0 liter. I was lucky tho, I guess usually they break off flush with the head and they take a mig welder to the bolt and build up the area with enough metal till they can weld a nut on. Out of the 12 bolts that hold the manifold on, 8 of mine were busted but none broke flush with the heads. it's a B&$%^ getting them out though. I used a ton of PB Blaster and Thrust oil and then a big pair of vise grips. There was enough bolt left to where I could slowly work them all back and forth to get them out. I could only get about 1/8 of a turn each time so it took me a tad over 4 hours yesterday to get them extracted, then another hour-ish today to put new ones back in. 12 bolts costs 29 bucks at the stealership, but it beats paying a shop to do it. In real bad cases on Chevys, the heads have to come off the block and get sent to a machine shop to have them each drilled out.

    So whatever brand pickup you have, go check your bolts, I bet at least one or two is busted off. This is super common apparently especially when the truck is under heavy load. It amazes me that the manufacturers know about these types of problems yet do nothing to fix it. There's plenty of room on the 6.0 for a bigger bolt and they certainly coulda used a better grade of metal in such a harsh condition. whatever's cheapest I guess.
  2. Patriot Services

    Patriot Services LawnSite Fanatic
    Messages: 13,552

    Step up to ARP fasteneners. Used them on racing rigs for years and turbo systems. Quality is way above stock junk.
    Posted via Mobile Device
  3. Moose's Mowing

    Moose's Mowing LawnSite Senior Member
    Messages: 452

    I wish I knew that 4 hours ago :drinkup:
  4. Patriot Services

    Patriot Services LawnSite Fanatic
    Messages: 13,552

    Not too late before next time. I grew up in rust belt country and became an expert in removing busted off, stripped out fasteners.
    Posted via Mobile Device
  5. agrostis

    agrostis LawnSite Silver Member
    Messages: 2,445

    E-Z out's and a thread chaser would have cut your time getting those old bolt's out and those new bolt's in by 1/2 and kept the frustration level lower.
  6. justanotherlawnguy

    justanotherlawnguy LawnSite Bronze Member
    Messages: 1,277

    I've got a chevy with a 6.0 and have 3 busted off one side and 2 on the other! You can hear the exhaust leak when it first starts, but once it warms up it's ok.
    Posted via Mobile Device
  7. lkendall

    lkendall LawnSite Member
    Messages: 157

    did mine the other day, had to heat wrench them for awhile.. Hardest part of the job.. Then one snapped
  8. happy

    happy LawnSite Member
    Messages: 194

    What are ARp fasteners? I have a ford with a 5.4 that sounds like it will need to be done. The other side has been done already
  9. Patriot Services

    Patriot Services LawnSite Fanatic
    Messages: 13,552

    ARP is an aftermarket company that produces extreme duty fasteners.
    Posted via Mobile Device
  10. dieselss

    dieselss LawnSite Bronze Member
    Messages: 1,897

    Just get stainless studs and nuts
    Posted via Mobile Device

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