Mini Cooper oil filter housing

joderest

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Hi all.
Daughters Mini had a very bad oil leak, sump covered in oil after about 10 miles driving. Thought it was the sump leaking, but turned out to be a really stupidly designed location of the oil filter housing. It is located behind the catalytic converter, front of engine, and is a known oil leak. Garage wanted £700 from Daughter to fit new seal !!!!, WOW.
So, long process cut short, Thursday, on the drive, jack up front, axel stands under car. Wheels off, both front wheel arch liners out (not an easy job, putting them back harder !) both front wing black trims off ( there is a bolt under them which needs to be removed) Then, front bumper off, headlights released, Radiator support bracket un bolted, any wires attached to the support released, Front subframe to front support unbolted, whole lot moved forward about 10cm. Thats the easy bit out of the way, disconnect exhaust at flexy pipe (angle grinder took care of the rusted nut and bolt) unbolt heat shields then remove top O2 sensor and disconnect lower one , unbolt and remove exhaust manifold along with the catalytic converter. Then the oil filter housing can be seen, clear up all the oil, then four bolts takes off the housing, replace the £10 rubber seal, then put the whole lot back together again !!!
Whilst i was there, new aux belt fitted (how the old one was staying together was beyond me ) and also fitted a new air con condenser, as old one falling apart ( hence why she had no air con for nearly two years). Total time spent 12 hours (i am getting slow in my old age) total for parts £200 (which includes condenser and a gas recharge, exhaust manifold gaskets, new oil, oil filter, aux belt, coolant and spark plugs.

My point is, its a pig of a job, its not only Mercedes that are a bit difficult.
 

s5tuart

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Probably a result of young designers straight out of college who have never even held a spanner :(
Whilst I was at Cranfield Uni I caught a MSc student fitting a 10mm tap into an electric drill :oops:
 

Uncle Benz

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Yeah, must have done a dozen or so of these. Lovely job. The “Prince” engine is an absolute doorstop.
 

malcolm E53 AMG

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They are all at it who would design an oil cooler buried deep in the vee of an engine which requires removal of all the engine breathing plumbing above it to renew £20 seals - it must be a competition lol the record must be 12 hours so it’s a draw
 

mioba

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Well done OP. A very satisyfying job by the sounds of it, as time consuming as it was.
 
OP
J

joderest

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Funny enough, when i got it stripped down and cleaned up the mess, it does appear its not the original engine, or it has been rebuilt, as there is signs of sealant on the lower casings, which would explain why it runs so well at 145,000 miles.
 
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joderest

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Bl**DY hell, makes a Mini engine appear to be easy to work on
 

LostKiwi

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Blobcat

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Jesus!
Who the hell came up with those designs? The top one looks like an explosion in a spaghetti factory.
The bottom one just looks wrong. I wonder what the belt life is...
First one is a BM
 

Uncle Benz

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I’ve been replacing a 640d timing chain this week. Another lovely job. 118k on it, and it was absolutely hanging.
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516-DE58-A-2-A50-488-A-9992-12686-C11866-B.jpg
 

Uncle Benz

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How about 1 inch pitch triplex then? ;)
There’s no need to go mad! Tbh there was nothing wrong with duplex that were fitted to Mercedes for years, but they’ve gone back to simplex, and in some cases a Morse chain that frankly wouldn’t be out of place as a watch strap. The duplex era Mercs were awesome. The chains would last the lifetime of the car, and then some. These cars came through my shop with 400k+ and the engines were still good. Now we’re seeing them being opened at around the 100k mark in some cases. I appreciate it’s all about the environment, but a few saved mpg on excessive drag means you are either buying more replacement parts that have their own environmental impact, or another car, which has a huge environmental impact.
Someone clever once said to me “If you want to know why something is being done, follow the money”. Probably the sagest piece of advice I’ve ever had.
 

Blobcat

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There’s no need to go mad! Tbh there was nothing wrong with duplex that were fitted to Mercedes for years, but they’ve gone back to simplex, and in some cases a Morse chain that frankly wouldn’t be out of place as a watch strap. The duplex era Mercs were awesome. The chains would last the lifetime of the car, and then some. These cars came through my shop with 400k+ and the engines were still good. Now we’re seeing them being opened at around the 100k mark in some cases. I appreciate it’s all about the environment, but a few saved mpg on excessive drag means you are either buying more replacement parts that have their own environmental impact, or another car, which has a huge environmental impact.
Someone clever once said to me “If you want to know why something is being done, follow the money”. Probably the sagest piece of advice I’ve ever had.
We used to get a lot of new members usually coming from VW’s etc asking about when to change the cam chains. Stock answer was pretty much “never”, can’t say that now unfortunately :confused::confused::confused:
 

mioba

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Some good points above, indeed never was the answer years ago (duplex). Astonishing how often chain issues come up on the forum niw.
 


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