Wanted: rear anti roll bar bolts.

[RobC]

Bit of a strange one this... The previous owner of my 16v neglected to tell me he'd got halfway through fitting the correct ARB (car started life as a Gti hurricane and this is the last thing required to finish it off) because he had in fact sheered off the nearshore bolts while trying to remove the existing one. So the knocking I've been hearing lately hasn't been the exhaust at all but the ARB flapping about...

If for some bizarre reason you have two bolts hanging around (they're 13mm) or can get hold of some, do let me know...

Ta

[RobC]

*nearside, darn predictive text...

[mat_fenwick]

they're 13mm

Can't be certain about the 16v, as I've never worked on one and know it has a different ARB. But on a standard BX the bolts don't have a standard ISO head size for the thread size.

Normally a 13mm head would relate to an M8 thread, but from memory (it's bee a couple of years since I last did the job) the thread size is actually M10 or even M12. I can't at the moment think why you couldn't use a bolt with a standard sized head (of sufficient strength) to do the job though...

[RobC]

Thanks Mat - according to the parts list the 16v has a different bolt to the rest of the model range. It's RP 5173 15 / 96 995 749 that I need, apparently.

Here's a pic.

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I'm a bit in the dark when it comes to thread sizes, but can it be ID'd from this? I suppose I could always get hold of a few different ones if they're cheap and just try them til they fit. Unfortunately I can't go back to check it because the pictured one's screwed back into the other side of the car now...

Rob

[mat_fenwick]

I've edited to show the photo - can't think of any way to identify the thread size without physically checking it...

Looks very similar to the standard type though.

[RobC]

Great, thanks for your help. hopefully one will show up soon.

[Defender110]

Well if that bolt head is 13mm spanner size it is 13mm across the flats and the diameter of the thread looks just slightly smaller 12mm? If it is 12mm across then it is M12 with a 19mm spanner size head as standard. Will the standard 19mm head fit? if so just buy a couple of standard M12 high tensile bolts. If it measures 10mm diameter it is a 17mm heag size.

[Vanny]

Kevan, if memory serves, the bolts go in through a narrow passage with little clearance so it is impossible to get a standard bolt in, certainly a 17mm or 19mm head isnt going to fit. They are also a very peculiar size i seem to remember.

I've had the same problem in the past (albeit it was i who forgot to refit after meddling with something) and took some time to find a replacement. There is a half chance i might have one spare in the garage, finding it however might be a challenge! Will have a look tomorrow and see what gives.

EDIT

CitService lists the following;

5173 15 - NFP - DIAM 12X150-29 - GTI 16S SINCE RPO 04496

[toddao]

I've got a rear anti-roll bar lying under the wrecker TRD along with its bolts and fixings. I dropped it off a few months back then got diverted. I'll take the bolts out later and measure them to see if they'll do for you.

[Defender110]

Kevan, if memory serves, the bolts go in through a narrow passage with little clearance so it is impossible to get a standard bolt in, certainly a 17mm or 19mm head isnt going to fit. They are also a very peculiar size i seem to remember

CitService lists the following;

5173 15 - NFP - DIAM 12X150-29 - GTI 16S SINCE RPO 04496

Then Socket Head set srews should do, these should do the job then M12 x 30mm length 1.5 pitch;

http://www.ebay.co.uk/itm/M12-x-1-5P-Fi ... 43b21cf597" onclick="window.open(this.href);return false;

[toddao]

The roll-bar I mentioned is still affixed to the rear axle assembly which is lying on the barn floor, unattached but under the wreck still. As I was wearing nice-ish clothes and the temperature dropped to -2 with snow flurries I didn't want to drag it out, turn it over etc. If you can't find anything, I can remove them. I don't know if the 16v and the standard ones are different - I have never noticed any differences between them. If I get a moment tomorrow I will investigate..

[citronut]

here are the dimensions for the two different bolts citroen list

6916 34
SCREW WITH BASE
DIAM 12X150-27

5173 15
NFP
DIAM 12X150-29
- GTI 16S SINCE RPO 04496

here is price and part No. of the two different bolt listed for BX rear anti roll bar

Part Number Description Quantity Price excl. VAT Price incl. VAT Total incl. VAT Selection
0000691634 SCREW WITH BASE 4.10 GBP 4.92 GBP 4.92 GBP

0000517315 SCREW WITH BASE 2.31 GBP 2.77 GBP 2.77 GBP

regards malcolm

[Vanny]

i understand that the 27/29 bit is the amount that doesnt have thread, so i guess a normal one will fit a valver but perhaps not the other way? the normal ones are still available.

not found my spares in the garage, yet

[Defender110]

The 29 and 27 should relate to bolt length so I assume the heavy duty roll bar has a 2mm thicker bracket but the 27mm would do fine.

[Vanny]

bah thats it, now i remember. If you try and stick a standard one in, its not long enough to catch to get it turning, i presume that is caused by the ARB being bigger (being as it is a valver). I imagine there is a way to compress the assembly (and over come the torsion in the ARB) before putting the bolt on, giving enough length. I wonder if i was always trying to put the retainer back on with one wheel on the ground.

Must admit i was thinking DIAM 12X150-27 meant diameter 12mm, bolt 150mm long, with 27mm without thread. But that would be stupid wouldn't it

But i guess its 12mm diameter by 150 pitch? Stupid boy pike.