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Thread: Allen bolt size @ rod end

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    Electron 2/3rdsCobra's Avatar
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    Allen bolt size @ rod end

    Hey all, I'm swapping my chromoly thimbles for the control arms right now and ran across a snag. I don't have the correct size allen bit/wrench. If you know the size, please chime in. TIA.

    Myron

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    Electron 2/3rdsCobra's Avatar
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    Well, didn’t get any help from anyone yet and all my calls to all the distributors was a bust so I’m taking a guess and I picked up a half inch Allen as well as a 12 mil. Hopefully One of them will work.

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    Electron 2/3rdsCobra's Avatar
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    DEF0AFF4-A043-461B-940F-E952564C2A41.jpgFB1DA45D-2402-4AAF-BD9C-E2CCCA33C548.jpg
    23 views and no help, wow. OK I picked up a SAE hex socket today set and found that the hex bolt is a 1/2 inch. I got one corner done before work. There are a few processes to go through to swap the thimbles. First, remove the fender, to do this you must remove the parking brake cable. Make sure your parking brake is not engaged. I used a small punch to knock out the retaining pin. Remove the fender fasteners. The fender will be loose but captured between the upper control arm and spindle. Use the 1/2 inch hex socket and remove the rod end from the upper control arm/spindle. Now you can remove the fender. Next remove the lower rod end hex bolt and now you can move the hub assembly to max positive toe to remove the rod end. I used anti seize for the rod end shank to thimble and thimble to control arm. My thought on this was to minimize galling but also to damp harmonics that could propagate a crack. I read somewhere on the forum that the hex bolts should be torqued to 88 ft lb. I also picked up some safety washers to capture the ball in the event of total failure/separation of the rod end. I used Loctite blue for the hex bolts which will be augmented with safety wire. I didn’t get time to wire tie the bolts yet but I’ll have it done before the weekend. This will be my first time safety wiring so it should be an interesting experience.
    Last edited by 2/3rdsCobra; October 3, 2017 at 11:14 PM.

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    Electron 2/3rdsCobra's Avatar
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    Well, all of the thimbles are in and I took the car to get it aligned. Camber F: -2.3 Toe F: 0.00, Camber R: -1.3 Toe: 0.00. Car feels great now. Next upgrade will be custom rod ends with a 2.4 inch long shank. I will also be getting torrington bearings for the coilovers to minimize coil bind. If $$$ is available, I may get co-axial mounts to really get rid of side loading and stiction on the coilover.

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    Lepton Atommatt's Avatar
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    Ever thought of putting these safety washers on for that added protection?

    https://secure.chassisshop.com/partrelate/C73-464-2/


    IMAG0297.jpg

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    Darn, Sorry I just saw your thread or else I would have let you know that size.

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    [QUOTE=Atommatt;22037]Ever thought of putting these safety washers on for that added protection?

    Does the factory rod end mounting hardware have enough extra thread length to accommodate these safety washers?

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    Electron 2/3rdsCobra's Avatar
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    Quote Originally Posted by Atommatt View Post
    Ever thought of putting these safety washers on for that added protection?
    I did. I went to a local race shop and picked up 6 safety washers and 1 3/4 inch shank grade 8 bolts. The allen bolts that come with the Atom aren't long enough when you use the safety washers. You need at least 5/8 inch thread engagement and with the 1 1/2 in allen head bolts, there isn't enough.

    Quote Originally Posted by 06Arielatom View Post
    Darn, Sorry I just saw your thread or else I would have let you know that size.
    No worries.
    06Arielatom likes this.

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    Lepton Atommatt's Avatar
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    I bought new bolts just to be safe .
    06Arielatom likes this.

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    Electron sector: 4's Avatar
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    I already have the longer rod ends you need on eBay. Do a search on eBay for "Brammo Ariel Atom 2 EXTRA LONG suspension rod end bearings". There's a very detailed description. I've installed 6 of them on my own car already. I can order more if anybody needs them...
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    Last edited by sector: 4; November 17, 2017 at 03:26 PM.

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