Thanks rossco that's a very kind offer. My is frame is however sitting on the bench already.
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| Tapping subframe bolts https://www.ausmini.com/forums/viewtopic.php?f=2&t=95738 |
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| Author: | simonw [ Fri Jul 14, 2017 1:18 pm ] |
| Post subject: | Tapping subframe bolts |
One of my tower bolts is munted and will have to go a size up. Would you just tap to 3/8 and bore out the body hole a tad ? Would you do just do the one or make all of them 3/8? Sent from my iPhone using Tapatalk |
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| Author: | Tim I [ Fri Jul 14, 2017 1:34 pm ] |
| Post subject: | Re: Tapping subframe bolts |
I'd put a recoil/helicoil in it. http://www.millerstooling.com.au/cutting-tools-recoil-screw-thread-inserts.asp |
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| Author: | rossco_j [ Fri Jul 14, 2017 4:16 pm ] |
| Post subject: | Re: Tapping subframe bolts |
Simon, If you want to go the drill & tap at 3/8, i have a long tap & drill bit to suit the job if the subframe is still on the car. |
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| Author: | peterb [ Fri Jul 14, 2017 5:56 pm ] |
| Post subject: | Re: Tapping subframe bolts |
Weren't there subframe studs that were 3/8" to 5/16" stepped? |
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| Author: | wild_willy [ Fri Jul 14, 2017 10:49 pm ] |
| Post subject: | Re: Tapping subframe bolts |
peterb wrote: Weren't there subframe studs that were 3/8" to 5/16" stepped? Yes! |
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| Author: | simonw [ Fri Jul 14, 2017 11:01 pm ] |
| Post subject: | Re: Tapping subframe bolts |
Thanks rossco that's a very kind offer. My is frame is however sitting on the bench already. Sent from my iPhone using Tapatalk |
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| Author: | drmini in aust [ Sat Jul 15, 2017 7:54 am ] |
| Post subject: | Re: Tapping subframe bolts |
Be careful if drilling out the hole in the cross member, it is just a thin tube. To stop the body collapsing when bolt is tightened. |
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| Author: | simonw [ Sun Jul 16, 2017 3:01 pm ] |
| Post subject: | Re: Tapping subframe bolts |
Yes that is problematic! Thanks doc . That's why I'm hesitant to go up to 3/8... not sure if any other options though.. Sent from my iPhone using Tapatalk |
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| Author: | Tim I [ Sun Jul 16, 2017 5:06 pm ] |
| Post subject: | Re: Tapping subframe bolts |
Just put a new thread in it. |
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| Author: | Matt I [ Sun Jul 16, 2017 7:18 pm ] |
| Post subject: | Re: Tapping subframe bolts |
Tim I wrote: Just put a new thread in it. Helicoil/thread repair insert you mean? |
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| Author: | Tim I [ Sun Jul 16, 2017 8:49 pm ] |
| Post subject: | Re: Tapping subframe bolts |
Matt I wrote: Tim I wrote: Just put a new thread in it. Helicoil/thread repair insert you mean? Yep. Sent from my Nexus 5X using Tapatalk |
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| Author: | simonw [ Mon Jul 17, 2017 7:27 am ] |
| Post subject: | Re: Tapping subframe bolts |
Tim I wrote: Matt I wrote: Tim I wrote: Just put a new thread in it. Helicoil/thread repair insert you mean? Yep. Sent from my Nexus 5X using Tapatalk Thanks Tim Would the size be 5/16 24 unf? Sent from my iPhone using Tapatalk |
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| Author: | Tim I [ Mon Jul 17, 2017 9:44 am ] |
| Post subject: | Re: Tapping subframe bolts |
simonw wrote: Thanks Tim Would the size be 5/16 24 unf? Yes. Drill it out to the size in the instructions (in this case 21/64") then tap it with the supplied special tap before screwing in the thread insert with the supplied tool. There are other brands, but these Pro Thread ones are available in a lot of tool shops here in Adelaide. Cost about $30-35 for the kit that includes 4-5 inserts, and you can buy more inserts as well as different lengths. 
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| Author: | simonw [ Mon Jul 17, 2017 4:09 pm ] |
| Post subject: | Re: Tapping subframe bolts |
Great advice . Thank you! Sent from my iPhone using Tapatalk |
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