Can anyone tell me how these rubber mounts are fixed and can they be removed? On of the mounts has broken off as you can see so I'll need to drill that out.
The rubber is bonded to the metal "washer/thread" unit. Use a pair of grips, grab the washer part and undo it. If it's proper tight, and it may be, get some release fluid in behind it and/or warm the cover up.
They're AV mounts. With what has left grab a set of mole grips after soaking the broken part in penetrating fluid and try and grip then at twist them out. Then replace with new
Thanks for the part no info Sev. Soaked it but couldn't find heat gun. Worse case scenario has occurred i.e. the bolt has snapped off. Tried drilling and have a kennedy extractor sitting in place. I will try heat when I find my gun and hopefully the bolt will come out. If not then I guess it's a guess of drilling right through, tapping a new thread and inserting a helicoil. Either that or replace the whole shebang! I hate seized bolts.
These things used to be the standard means of attaching exhausts on cars before the current system of simply hanging exhausts on with hooks and rubber came in. Halfords or even Quickfit etc may have them - worth a try. Best of luck with that bolt...
iirc, they are 20mm deep at the rubber mount. - let me know, as I may have some you can have. The ducati ones are unique in that they are a different diamater to the normal AV mounts - 20mm OD i think.
I had one come un-bonded. I thought I replaced it with a universal-type one but it was a while ago now
Used to be called the exhaust 'cotton reel' mount........ ...........fitted to all pre-BMW Minis, particularly if the exhaust box had been changed.........but the thread wasn't Metric. GEX7251 - Mini Exhaust Mounting - Rubber Bobbin type - from Mini Sport Top brands from Cooper, Paddy Hopkirk, Motor Heritage, Newton Commercial, Castrol plus many more..
God Almighty. After applying heat I tried again with the extractor and it resulted in worse case scenario - effing thing snapped off. Drilling out now seems to be impossible. What a mess. I've managed to drill through the other side successfully, but non-centered. I used Kennedy cobalt drill bits. Is there any way I can salvage this? Don't really want to fork out for a new part.
Oh dear, you have made a mess of that - maybe you should have taken the part to a local machine shop and got them to drill it out for you... However. All it is, is a means of mounting your oil cooler. Nothing too critical, no moving parts - it's not even terribly visible. Time to think outside the box perhaps?. How about bonding your cotton reels direct to the aluminium?? It looks as though there may be space for a nut beyond the threaded section of the casting. Maybe a machine shop could drill right through the broken off bit and casting so you can put a nut on the end of a bolt that goes right through a drilled out cotton reel. One bodgers way to do it would be to drill several small holes all around the broken off 'bolt', preferably contacting it, so you can break it out, Then you can fill and bond your new cotton reel/s in place with chemical metal. You could also do this after a machine shop has drilled out the old stump, for a much neater solution. Probably best to stump up for another casting though, maybe s/h from ebay? Come to think about it, are there not high-level and low-level mounting options for these oil coolers? Maybe that's worth looking at. There have to be all sorts of solutions... ps I think I could still drill this out. The metal is not exactly super-hard - all it needs is a sharp drill-bit, a steady hand and lots of patience. However, judging by your efforts so far, I'm guessing that patience may not be your strongest attribute...
Thanks for the advice, much appreciated. I am a patient person, but the mess you see is my efforts to drill around the broken off extractor using a hand held drill. Machine shop may be my best option now as you suggest.
In my experience small diameter 'broken stud' extractors are a recipe for disaster............ Best thing to do is centrally drill into the broken stud with as large a diameter drill as possible so it is as nearly the same size as the smaller diameter of the thread, then use a pointed punch to cave in and break the remains of the stud, so it can be picked out...........normally leaves enough usable thread in the casting. With the OP's one, I think it needs a machine shop to dig out the broken extractor and filling the hole with ally weld; then re-tapping.
Oh I see... The extractor broke off, no wonder it looks a mess. Trouble is the extractor will be really hard A machine shop may not want to wreck their bits on it. Maybe they or you could still drill lots of small holes all around to get it out and then you could do the chemical metal thing to bond the thread of a new cotton reel in or, as I said, just try bonding the cotton reel direct to the aluminium, having cut off the thread. That would probably be simplest if you can get a good bond. More suggestions than advice...
Sound advice but if he can get one cheap from ebay it would probably cost less - unless he knows an incredibly friendly and helpful machine shop...
that component isn't a lot of money, thirty quid or so at most, and I think that's certainly cheaper than a machine shop will charge you to drill out a hardened extractor shard and make good.. part number 24010081AA
is the casing in question the same used for high and low positioning as mine is high positioned on my 750 ss ie also is it the same item as a 900 one sat in my shed is a complete engine I have kept for spares
When I was messing around with my 750 valve covers, I found that I could turn the 'high-mounted' cover upside down and fit it to the lower position and then hang the oil cooler off it, instead of it standing above the higher cover........... ............mind you, I didn't like it in the lower position despite it being easier to access the throttle and balance screws.
