displaying posts 1 to 18 of 18

Author Subject: Custom bolt - where to get?
demondriverdan

Seasoned Pro

Location: Londinium

Registered: 29 Nov 2010

Posts: 2,665

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Post #1
I want to get a new bolt made up for my top mount but not sure where I can get it done?

Specs are:
M10x1.5
80mm length
35mm top threaded
Remainder as a larger (M12) shoulder

Is that doable?

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Rallye Race Car
Posted 29th Jul 2014 at 11:00
dangti6

aka JKshooter

Location: Taunton, Somerset

Registered: 15 Jun 2006

Posts: 10,305

Status: Offline

Post #2
M12 bolt turned down and re threaded?

Found this place that could help, but your batch size is going make it pricey no doubt LOL

http://www.nationalbolt.com/custom-bolts-fasteners.html

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  • Posted 29th Jul 2014 at 11:09
    welshpug!

    Capt Pedantic

    Location: Bigend, Wales.

    Registered: 27 Mar 2007

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    Post #3
    guess you mean a sleeve nut?

    give dave at satchel engineering a shout, he might know of or be able to make you one.

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    Posted 29th Jul 2014 at 11:28
    welshpug!

    Capt Pedantic

    Location: Bigend, Wales.

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    Post #4
    guess you mean a sleeve nut?

    give dave at satchel engineering a shout, he might know of or be able to make you one.

    ________________________________________

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    Posted 29th Jul 2014 at 11:29
    demondriverdan

    Seasoned Pro

    Location: Londinium

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    Post #5
    Don't think I want a sleeve nut? Dan's right in that it's essentially an M12x1.5 bolt with the threaded part turned down to an M10x1.5.

    The mount uses a threaded M10x1.5 bolt at the moment but the hole it goes through is much bigger which I don't like, there's too much room for movement. I thought if I can get a bolt with a shoulder that's bigger that the thread, it should create a nice fit.

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    Rallye Race Car
    Posted 29th Jul 2014 at 11:53
    tvrfan007

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    Post #6
    Any local engineering firm could make that for you.

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    Posted 29th Jul 2014 at 11:56
    welshpug!

    Capt Pedantic

    Location: Bigend, Wales.

    Registered: 27 Mar 2007

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    Post #7
    front struts dont use bolts, its a nut onto a threaded spindle Unsure

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    Posted 29th Jul 2014 at 12:06
    daveyboy

    aka Jim Davey

    Location: Southampton

    Registered: 01 Oct 2007

    Posts: 8,648

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    Post #8
    Slide some steel/ally tube over the M10 bolt to take up the slop.

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    Posted 29th Jul 2014 at 12:29
    demondriverdan

    Seasoned Pro

    Location: Londinium

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    Post #9
    Top engine mount, I should have said, sorry WP!

    I'll ask around, cheers guys.

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    Rallye Race Car
    Posted 29th Jul 2014 at 13:04
    dangti6

    aka JKshooter

    Location: Taunton, Somerset

    Registered: 15 Jun 2006

    Posts: 10,305

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    Post #10
    What about the steel tube that's used to mount the steering rack to the subframe? That's M10 I think.

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  • Posted 29th Jul 2014 at 13:58
    welshpug!

    Capt Pedantic

    Location: Bigend, Wales.

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    Post #11
    still not understanding which bit you want LOL

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    Posted 29th Jul 2014 at 14:13
    demondriverdan

    Seasoned Pro

    Location: Londinium

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    Post #12
    dangti6 wrote:
    What about the steel tube that's used to mount the steering rack to the subframe? That's M10 I think.


    Good point, might be too think but I'll take one out of the spare car and have a look.

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    Rallye Race Car
    Posted 29th Jul 2014 at 14:19
    demondriverdan

    Seasoned Pro

    Location: Londinium

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    Post #13
    welshpug! wrote:
    still not understanding which bit you want LOL


    Vibratechnics top engine mount, y'know the one on the left hand side of the engine with the bridge across? Razz

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    Rallye Race Car
    Posted 29th Jul 2014 at 14:20
    dangti6

    aka JKshooter

    Location: Taunton, Somerset

    Registered: 15 Jun 2006

    Posts: 10,305

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    Post #14
    demondriverdan wrote:
    dangti6 wrote:
    What about the steel tube that's used to mount the steering rack to the subframe? That's M10 I think.


    Good point, might be too think but I'll take one out of the spare car and have a look.


    To save you the effort, I've one in my box of 'fixings you keep for a situation exactly like this' which I can measure for you if you like.

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  • Posted 29th Jul 2014 at 14:24
    welshpug!

    Capt Pedantic

    Location: Bigend, Wales.

    Registered: 27 Mar 2007

    Posts: 25,839

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    Post #15
    ohhhhh, do they not have a stud like a proper engine mount?

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    Bring on the Trumpets.

    Posted 29th Jul 2014 at 14:28
    demondriverdan

    Seasoned Pro

    Location: Londinium

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    Post #16
    dangti6 wrote:
    demondriverdan wrote:
    dangti6 wrote:
    What about the steel tube that's used to mount the steering rack to the subframe? That's M10 I think.


    Good point, might be too think but I'll take one out of the spare car and have a look.


    To save you the effort, I've one in my box of 'fixings you keep for a situation exactly like this' which I can measure for you if you like.


    That would be great, thanks! Saves me taking the rack of the car for no real reason. Not much left on it anyway! Smile

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    Rallye Race Car
    Posted 29th Jul 2014 at 16:42
    demondriverdan

    Seasoned Pro

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    Post #17
    welshpug! wrote:
    ohhhhh, do they not have a stud like a proper engine mount?


    Not really, I'll try and describe it as I can't find an exploded picture of one online.

    The mount is in two pieces. The bottom piece is essentially a case for the top part with a bolt through it that goes down in to the chassis. The top piece has a central bolt that goes through several bits of rubber and comes out of the top for the bridge to the engine to bolt down on to. The top-ward bolt sheared during the last race and I've replaced it with an identical one but would like to get a stronger one in.

    Just to be sure, there's no fault with the Vibratechnics mount that caused it to shear. My chassis point was pretty badly damaged before going and the mount was moving around a lot. I think with the amount of movement it put undue stress on the bolt and it sheared. I should also point out I'm not running the race mount, just fast road, as it's what came on my spare car and I hadn't thought about it until now! Vibratechnics have been great and helping me figure out what happened! Smile

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    Rallye Race Car
    Posted 29th Jul 2014 at 16:50
    allanallen

    Seasoned Pro

    Location: Buxton

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    Post #18
    Mail me a sketch if you want one making up dan. Sounds like the easiest/cheapest way would be to get/make a bit of thin wall tube to sleeve an m10 bolt up to size.

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    Posted 29th Jul 2014 at 17:47

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