Omega Owners Forum
Chat Area => General Car Chat => Topic started by: Diamond Black Geezer on 25 February 2015, 10:28:13
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A source of slider bolts is on a famous auction site, the seller is called 'biggred4u' - website http://www.biggred.co.uk/ (which is down at time of writing) who are re-manufacturing these pins for various vehicles. For the Seat Alhambra VW Sharan, but they claim are the same as Omega front bolts. Priced at £4.90 each which I don't think is insane.
I've been on the lookout for Omega Slider Bolts for the front calipers - they're tricky things to get hold of. Vauxhall don't seem to want to sell them, unless you want a whole caliper, too (if anyone hears different, please post) I'm ordering myself a set. Will post my findings. :y On the other hand if anyone on here can show me an alternative source - genuine GM for instance, please do :) I was expecting the bolts to be easy to source, and used on Vectras, Astras etc.. but they are Omega-specific, it seems. :( Again, if anyone knows different, please post. :y
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Don't know if it's same company or not but I have read in classic car magazines of a company called Big Red who it seems specialise in rebuilding brake calipers/selling refurb kits etc. so it could be same company.Don't know about compatibility with Sharan parts and the like,but if it's same company then I'd imagine they know what they're on about.As ever I stand to be corrected on this.
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Yeah, same guys I think. :)
The only issue is that the best I can do without a pair of calipers (measuring, not brake) is the diameter of my bolts seem to be 9mm ish, and they quote 8.2mm. (I know, that is '9mm-ish' but to an engineer 0.8mm's a mile out) and also they claim 60mm length - Omega ones are 71mm (ish!). On the listing they state all pins are the actual one you will receive, no 'stock photo' rubbish like you often get. and holding it against the screen they appear the same length. From shoulder to end the length is 60mm, so perhaps it's just an error in the listing.
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Recommend these people: http://www.brakeparts.co.uk/#!/shop/VAUXHALL/OMEGA/94-01/OMEGA%202.5%20TURBO%20DIESEL%20inc%20ELITE/Front%20-%20Brake%20Calipers%20and%20Wheel%20cylinders/BCF1301
:y
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Thanks Seth :y
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Just ordered me a set - so no-one go and tell me they can get them from Vauxhall for less than £9.80 the pair!!! :D
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Hmmm. SEAT Alhambra has 3 variations of front caliper on the series II models
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Ah, thanks for the heads up - though these have been bought on their size, which they tell me is the same as that listed for Seat Albramrambramra rather than being told 'oh, Omegas and Alhabrahambhrarambrabramhhahs share the same slider bolt' and me then blindly going out and buying a set, unaware I've only got a 1/3 chance of getting the right ones, type of thing. The other site which Seth linked to also quotes these as being 60mm long, and 8mm diameter, so in theory should be fine. In theory :D
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I'll ask..... ::) ;D
Why do you need new / replacement slide pins DBG? :-\
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I'll ask..... ::) ;D
Why do you need new / replacement slide pins DBG? :-\
Maybe if the vehicle has been sat around for a while and the rubber boots have perished they may have started to rust. Had this on one side of the 3.2 but just cleaned it all up, greased and put back together.
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I'll ask..... ::) ;D
Why do you need new / replacement slide pins DBG? :-\
Maybe if the vehicle has been sat around for a while and the rubber boots have perished they may have started to rust. Had this on one side of the 3.2 but just cleaned it all up, greased and put back together.
Yup... wire wheel, silicone paste. Done.
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I'll ask..... ::) ;D
Why do you need new / replacement slide pins DBG? :-\
You've never experienced a knackered pad escaping a seized caliper, tearing the valve out of the wheel on its way then? With a load of two cars, that was an unpleasant surprise. It took me ages to get the sliders out so I could polish them with some emery tape.
Ensuring that the sliders are free is something you should do anytime you work on a sliding caliper.
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I'll ask..... ::) ;D
Why do you need new / replacement slide pins DBG? :-\
You've never experienced a knackered pad escaping a seized caliper, tearing the valve out of the wheel on its way then? With a load of two cars, that was an unpleasant surprise. It took me ages to get the sliders out so I could polish them with some emery tape.
Ensuring that the sliders are free is something you should do anytime you work on a sliding caliper.
Apologies if I gave the wrong impression Nick. Everytime I do brakes I ensure the slides get cleaned and greased up with silicone paste. :y
Come across about 5 fubar'd calipers now (all on my mate's family's Hyundais.....trajet and coupe :-X). only one had the slide pins seized.....which was sent away with caliper for refurb anyway. :)
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Whoah, sorry if this has provoked disagreement :)
Basically the story is - I caught the rubber gaiter with the wire brush, putting a hole in it. (was just about to stop to mask off the rubber, so I didn't put a hole in it - ain't that always the way? ::)) so consequently the caliper has been fully stripped down (that's piston out, seal out, the lot) and painted. Good, used bleed nipples are ready for going in, replacing the rounded old one. One of the slider bolts seems perfectly serviceable, the other has has water ingress , and corrosion approaching the sliding part. The brakes were very stuck on, hence the stripdown, and I couldn't discount the slider bolts being the cause. It's my belief that the corrosion on the lip where the smaller gaiter/boot sits over isn't a very good seal, so more water could/will easily get in again.
I'm being a right tight-fisted g!t where I can, the whole project is on a shoestring and minimum-wage budget, but never at the expense of safety, or cost in the long-run, if you all follow.
Total cost of the refurb so far
bleed nipples - free
Paint Enamel - £6
Brake discs - free (mate's unused ones)
Brake pads - free (mate's unused ones)
Wire brushes - already had them in
Vinegar - £0.44 (de-rusting the bolts etc)
total of £6.44 per caliper, I'm getting there! :)
So adding the slide bolts which should be good as new for many years (as I'll be regularly checking them annually, unlike previous owners :y) adds just under a tenner to the cost. Re-using all bolts. I was getting replacement new, but opted for refurbing the old.
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No disagreement mate... just curious :y
If you feel they're compromised and you aren't comfortable tidying up and re-using then definitely replace :y
Lube new ones up with silicone paste. Don't use grease.... it'll dry up over time and could cause them to stick again in future :y
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Cheers Mr The Bear :)
Actually went to three local motorfactors for the stuff, to no avail. Castrol red grease seems to be the right stuff. After much searching on the internet, with may people saying ordinary grease or coppperslip is fine, I've decided to go 'proper' and ordered some Castrol red grease online.
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I wouldn't use any copperslip.
This is what ya need . . .
http://www.ebay.co.uk/itm/Silicone-Grease-Multi-Purpose-Grease-Water-Repellent-Carlube-70g-Long-Lasting-/230700303884
Or the 3M stuff but that's farking expensive . . .
HTH :y
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Cheers mate - seen it, but actually wasn't sure if this was the right stuff as it didn't state 'high temperature' (or missed it on the packing?) but I know what to get now :)
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Oh, just to add to the discussion - they came, and they're too ruddy small!!
They're sure these are the ones they have listed for Omega, but what i don't get is that the ones that Seth recommends, and gave the link for claim to be 8mm diameter, and 60mm long - the same dimensions as the ones biggred sent. Now has my V6 got some weird larger calipers that isn't standard (highly doubt this - have stamped Lucas and Opel on them) I will have a go at swapping a slider bolt for one off the Turbo Weasel FL, just to be double double sure they're the same caliper - but if the ones Seth has used before are listed as only 8mm diameter - and the Omega ones are definitely 9.8/9.9mm - how can that be? I'm confused!
8mm pin in a 9.9mm hole might sound ok, but they waggle around like you wouldnt believe, and I can't bring myself to fit them to the car.
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It's no use guessing at what need to be reasonably precise measurements.
Get yourself a cheap digital caliper and measure the ones you took off.
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Be fair to assume that early four pots have smaller, different calipers to match their smaller, different discs and they've sent the wrong ones ::)
But as Nick says, best to actually measure yours :y
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Have now measured with digital calipers my slider bolts, and contacted the company again. The Omega slider bolts are 71mm long and 9.9mm diameter, with a 17mm head with internal thread of M8 x 1.25. The snag being the ones they offer as replacement, and should fit have an internal thread of M8 x 1.00. So it's a case of sourcing new bolts, or getting them to make a kit up. Their kits come out as almost £30 - including rubbers I don't need, and bolts I don't want, bolts can come from scrapyards anytime. And £30 is almost double the price for the same as what Serek linked to from a similar company. Snag being the ones Serek offered are the same, earlier, thinner slide bolts. So I have no idea where I am or what to do now! ::)
At present I'm thinking just slap grease on the originals, bung them back in and come back to them at a later date, as slightly corroded slider bolts isn't going to be an MoT fail, but the complete lack of front suspension and fuel leak are, so having to prioritise.
While I've got you all here - anyone see why this won't be a perfect replacement for original Omega brake banjo bolt?
(http://i.ebayimg.com/00/s/MTYwMFgxMjAw/$(KGrHqJ,!jYE9IsNdP2PBPibHdLW1Q~~60_57.JPG)
heebay item
http://www.ebay.co.uk/itm/221289938600?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT (http://www.ebay.co.uk/itm/221289938600?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT)
It's a thread of M10 x 1.00, looks identical to me, and half the price of genuine GM, stainless steel and comes with two crush washers, which Vx want 99p each for.
Thanks gents. :y
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This is exactly the sort of thing that should be GM sourced... why? As you are finding, noone else seems to be able to manage any more than a guess...
Presumably VX do a caliper repair/overhaul kit... ::)
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Ah, yes, and no - they want to sell you the caliper carrier too - so well in excess of £60. >:( Aside from the additional cost of that, I have already spend many hours grinding off the rust and repainting my perfectly serviceable calipers, which now look like new. I only need a rubber gaiter, and a couple of slide bolts to make them like new.
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Ok, factor in all the stress and aggro trying to accurately source those two parts and tell me that's not worth £60 :-\
If you're to do summat...
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Or just do what the rest of the world does; polish them up, grease and refit. Crudded up brakes are nothing new, and rarely require much to make them serviceable again.
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Or just do what the rest of the world does; polish them up, grease and refit. Crudded up brakes are nothing new, and rarely require much to make them serviceable again.
Can't argue with that :y
But seems a shame, given the lengths being taken to preserve the rest of the car, that such a convoluted approach is being taken :-\
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I wouldn't use any copperslip.
This is what ya need . . .
http://www.ebay.co.uk/itm/Silicone-Grease-Multi-Purpose-Grease-Water-Repellent-Carlube-70g-Long-Lasting-/230700303884
Or the 3M stuff but that's farking expensive . . .
HTH :y
I'd never use copperslip anywhere near rubber brake components. It's an anti sieze compound mainly but attacks most rubber and causes it to swell in my experience.
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I wouldn't use any copperslip.
This is what ya need . . .
http://www.ebay.co.uk/itm/Silicone-Grease-Multi-Purpose-Grease-Water-Repellent-Carlube-70g-Long-Lasting-/230700303884
Or the 3M stuff but that's farking expensive . . .
HTH :y
I'd never use copperslip anywhere near rubber brake components. It's an anti sieze compound mainly but attacks most rubber and causes it to swell in my experience.
That's correct. . . Hence why I gave him a link to silicone paste :y