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Thread: new to forum need starter helicoil size info - Bracket?

  1. 03-30-2014, 19:35 #1
    chevegan
    chevegan is offline Newbie
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    Default new to forum need starter helicoil size info - Bracket?

    hi all. Good to find these forums. I picked up this 86' 6.2l 3500 dump conversion and it has only one starter bolt. Figured that out when it ran the starter without turning the engine over.

    Anyhow. I've done a lot of reading and these thread inserts seem to be the way to go. I Have the ac delco bolts ordered but just need to know what size helicoil I need to buy - M10?

    Also some of these engines seem to use brackets, should mine have one? I didn't notice a spot for it.

    Thanks for the help!

    - Part numbers would be greatly appreciated. Especially if it needs a bracket.
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  2. 03-30-2014, 20:23 #2
    Yukon6.2
    Yukon6.2 is offline Enthusiast
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    Hi chevegan
    Welcome to the Dieselpage
    Yes you need the bracket,it attaches to the front of the starter on one of the bolts that goes through the starter.There are two different ones depending on the starter.You should see a bolt hole in the side of the block for the other end.
    Are you sure you need to helicoil the holes? There is a section of the hole that has no threads,the original bolts have a knurled section that is supposed to keep the bolt from backing out.The original bolts are the best,again there are two different lengths depending on the starter.One starter is direct drive and the other has a gear reduction drive,and has a smaller body.
    I can't help with part numbers for the brackets,but they should be on the page,so you should find them with a little searching.Or someone will chime in with them.
    Have you removed the starter to inspect the holes?Most of the time the bolts will break off in the block if there is no bracket.If that has happened there will be a little work to remove,but again we are here to walk you through it if that's what happened.Do an inspection first with the starter removed and take it from there.
    Good Luck
    Thomas
    90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews
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  3. 03-31-2014, 06:02 #3
    chevegan
    chevegan is offline Newbie
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    the bolt end is broken deep in the threaded section. i just hope it wasn't cross threaded in. I'll try the extraction tool first I suppose. Nothing to lose.
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  4. 03-31-2014, 15:01 #4
    Dvldog8793
    Dvldog8793 is offline Enthusiast
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    I have had the best luck with kroil penetrant and a left hand drill bit.
    Good luck!
    1996 Chvy 3500 CCDWLB 6.5 Heathed, NO vac, marine injctrs, ARB bumper, BIG pipe, 3" lift, bright lights, bypass oil system.
    1986 Chvy 6.2 M1009 blazer RAM AIR, Headers, Custom interior
    2001 Chinook RV, V10 gas
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    1993 John Deere 455 Diesel lawn mower
    1967 GTO, 1989 Honda Transalp
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    1998 6.5 suburban, stock, daughter's
    1993 6.5 3500 CCSWLB GM8, Heathed, big exhaust, gauges, Son's
    1984 6.2 ATS turbo 3500, SCDWLB - Son's
    3 kids, 1 wife, 1 dog
    Gunsmith, Tactics Instructor, Fabricator USMC 87-93 Semper Fi!
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  5. 03-31-2014, 23:53 #5
    Yukon6.2
    Yukon6.2 is offline Enthusiast
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    Yes on the left hand drill bit.They work great.Well worth the money if you don't have any.
    Thomas
    90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews
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  6. 04-02-2014, 10:03 #6
    chevegan
    chevegan is offline Newbie
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    awesome. Bought a set yesterday. Now if the weather would be better.
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