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Jul 26, 2010 21:53:38 GMT
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I have a set of BBS style 5's to go on my E36 3 series, and I'm trying to take the centres out of the barrels so I can have them refurbed and painted. The problem is that I've removed all of the bolts and successfully split one, but the other 3 centres just refuse to budge from the barrels. I've tried heating the barrels, repeated use of rubber mallets to try and break em free, and even a puller arrangement using a metal bar and some threaded rod. They've all been soaked in WD40 again and again for over 2 weeks and I'm all out of ideas. I really don't want to damage them, and even wondered if they were fake splits for a bit until I managed to split the first one. Has anyone got any bright ideas as to what else I can try? I'll give anything a go as they're doing my head in! Cheers
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1967 Morris Traveller 1971 Series IIA Land Rover 1991 Golf GL 4+e 1992 Corrado G60 1986 E28 BMW 528i
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Jul 26, 2010 22:02:26 GMT
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I split some 3 piece ones - I cut all the sealant and they werent even near budging, I jumped on them and everything.
In the end I used a VW scissor jack against the back of the lips, and steadily wound it out until it forced them apart. Worked great.
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Jul 26, 2010 22:08:54 GMT
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Yeah I'd considered that, but there's nothing to use a scissor jack against, the barrel of the wheel is one piece, no sealant needed, I'm just trying to get the centre out of the middle, but it seems to be seized/corroded into place and I can't apply enough force to shift it? See in the pic below - the face of the wheel bolts up to a lip in the barrel and pushes out from the front to back
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Last Edit: Jul 26, 2010 22:11:03 GMT by whitbytom
1967 Morris Traveller 1971 Series IIA Land Rover 1991 Golf GL 4+e 1992 Corrado G60 1986 E28 BMW 528i
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Jul 26, 2010 22:18:47 GMT
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I went against the back of the lip - the bit that would cover the bead on the tyre. there's only a few MM, but it was enough to get the jack in.
Mine was stuck with sealant rather than corroded, though.
I read a few years ago of a bloke putting a really wide tyre on the wheel, pumping it up to about 100psi and then walloping the back of the wheel with a mallet, and the whole thing came apart with a chuff of air and surprisingly projectiles. It sounds scary, but he did it 4 times, so it cant be that bad.
EDIT: OH, I see, a 2pc with a separate center, rather than the 2pc with a centre and back as one, and separate dish.
I'd push the wheel under jacked up car with some old towels and a few bits of wood to protect the face and space it out, then let the jack down slowly.
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Last Edit: Jul 26, 2010 22:23:21 GMT by cobblers
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Erm............more heat and a bigger hammer!?!?
Try freezing the centre with liquid nitrogen, fairly sure you can get it in a spray can now, I've got somthing similar in the garage for freeze fitting bearings.
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Remember the days when sex was safe and motorsport was dangerous. Vintage bling always attracts pussy.
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I'd push the wheel under jacked up car with some old towels and a few bits of wood to protect the face and space it out, then let the jack down slowly. +1 That's how a friend did it with the same wheels I believe.
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Faster. Faster. Until the thrill of speed overcomes the fear of death.
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stealthstylz
Club Retro Rides Member
Posts: 14,839
Club RR Member Number: 174
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You need a bigger hammer rubber mallets are no good. I used a piece of 4x3 and a lump hammer and you have to hit it hard.
Matt
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rob0r
East of England
Posts: 2,743
Club RR Member Number: 104
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I have the same wheels, I'm scared to break them apart! I was going to give them a quick refurb in one piece...
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E30 320i 3.5 - E23 730 - E3 3.0si - E21 316 M42 - E32 750i ETC
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Is the tyre still on it? If so remove and heat the rim up from the outside (all around) but don't heat the centre. Mount the wheel face down on a blanket covering some wood - then using a stump of wood and a rubber mallet smash the back of the face in a cross pattern to hopefully drive the face out square.
The wheels I split and flipped needed alot of heat before I could club the centre out of the band. Alternatively find someone with a press or improvise to get the same effect.
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Haha cheers for the suggestions guys!
I've gone down the lump hammer and block of wood route already, I think the heat/cold route might be a winner. The blowlamp I have is poxy and only gets them warm to the touch, so I might see if they'll fit in the oven (when swmbo is out!)
Any idea where I might get the freeze spray from?
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1967 Morris Traveller 1971 Series IIA Land Rover 1991 Golf GL 4+e 1992 Corrado G60 1986 E28 BMW 528i
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Jul 27, 2010 10:00:53 GMT
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Any idea where I might get the freeze spray from? Plumbing suppliers
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Jul 27, 2010 10:30:32 GMT
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Or a CO2 fire extinguisher
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Tim
Posted a lot
Posts: 3,340
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Jul 27, 2010 10:53:50 GMT
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quick one - if they are that difficult to get apart, are they evfer going to go back together properly?
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Jul 27, 2010 11:10:21 GMT
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You need to heat the band up, not the centre - putting them in the oven wont help as both sections will expand and still be locked together. The centre has an interferance fit, get the rim nice and hot so it expands and the centre will plop out with a few taps. The expansion will be fractional but it will be enough to loosen the centre.
You will then need to heat them up to drop the centre back into place.
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Jul 27, 2010 14:27:27 GMT
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Are you sure they're an interference fit? The one that I did manage to split came relatively easily with no heating, just a few clouts from the lump hammer on a block of wood.
My theory is that the mating face between the barrel and the centre is corroded together through years of exposure to brake dust and road salt, but I'm not certain.
My idea with the oven was to warm the whole lot up, and then freeze spray the centre to make the centre contract and hopefully more willing to budge.
Otherwise I might have to find someone with proper oxyacetylene gear to warm them up properly
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1967 Morris Traveller 1971 Series IIA Land Rover 1991 Golf GL 4+e 1992 Corrado G60 1986 E28 BMW 528i
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Jul 27, 2010 19:41:40 GMT
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DON'T use the inflation trick mentioned, it can be a rapid way to become the main attraction at a funeral, or idiot of the week at casualty.
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74 Mk1 Escort 1360, 1971 Vauxhall Victor SL2000 Estate.
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Jul 27, 2010 21:03:54 GMT
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be jolly careful chilling down the centre and then walloping it, fracture is a possibility with the aluminium becoming more brittle.
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Jul 27, 2010 21:25:55 GMT
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Well I tried heating the barrel with the blowlamp until too hot to touch, and used my spring compressor/box section/block of wood puller arrangement to try and pull the centre out, and managed to shift one, but the other two still refuse to budge, to the point that one of my spring compressors sheared.
I think I need to get the barrels hotter
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1967 Morris Traveller 1971 Series IIA Land Rover 1991 Golf GL 4+e 1992 Corrado G60 1986 E28 BMW 528i
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stealthstylz
Club Retro Rides Member
Posts: 14,839
Club RR Member Number: 174
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My method for splitting my RC's was:
Put the wheel on the floor face down and fill the gap between the centre and barrel with hair spray.
Light it then flip wheel over.
Give it a second or 2, then hit hard (as hard as I could) with a 10lb lump hammer and block of wood.
I've done 16 wheels that way and never had any problems and some have been mega corroded.
Matt
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My method for splitting my RC's was: Put the wheel on the floor face down and fill the gap between the centre and barrel with hair spray. Light it then flip wheel over. Give it a second or 2, then hit hard (as hard as I could) with a 10lb lump hammer and block of wood. I've done 16 wheels that way and never had any problems and some have been mega corroded. Matt ?? You spraying the hairspray on the centre too chill it or on the inner face of the rim too lube it?? Another way you could try is too put a HEAVY weight pushing down on the centre, like a car as said above, so the weight is just off the jack on on the wheel, but so if it does drop then the jack will catch it, then clobber the hell out the the centre!! The combination of a heavy and solid load (the car) and the shock load from the hammer should shift it. That was the way we used to remove the landing gear from hawks and tornados, hard work but never failed
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Remember the days when sex was safe and motorsport was dangerous. Vintage bling always attracts pussy.
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