no compresion in cly 5 m50 ahhhhhhhhhhhhh

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shabalake
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Tue Jul 17, 2012 7:17 pm

Recently ive found petrol in the oil (checking oil levels) ive taken it to a gragage and they check compresion and theres none in 5, what could be the problem whats the least expences way to fix it is there any point? the car is really anoying me now evertime i fix something something else breaks! :x
Thanks alot
Andy
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Tue Jul 17, 2012 7:30 pm

No compression would suggest one of the following

1- Valve guides worn or valve not closing fully
2- Valve stem seals, but less likely
3- piston has a hole in the top
4- piston ring broken or very worn
5- could also have a shagged coil pack on that cylinder which means no fuel getting burnt and that has lead to other problems.

Either way, it's a head off job more than likely to find the fault, which means about £150 of bits for a decent headgasket set and head bolts plus other things which it would be daft not to replace whilst it is in bits. This is assuming it is then worth fixing your engine

You could get another M50 donk for similar money. But if you're not mechanical then it'll cost you a few quid for someone to pull the old engine & box and swap over your gearbox and ancillaries.

You could probably do it in a day on your driveway if you got stuck in early on and everything swapped over without dramas
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shabalake
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Tue Jul 17, 2012 8:03 pm

Are there any members in the surrey area willing to do a m52 swap? might that be better idea? heard they are more reliable?
Andy
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rich318i
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Tue Jul 17, 2012 8:36 pm

SE london mate. my mates got one ready to go in steal liner too
E30BeemerLad
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Tue Jul 17, 2012 8:48 pm

Contact a member called BSS325i - Barry. He's a BMW tech and is in Surrey.

If you can travel further afield then the man for the job truly is DanThe, he's based near Cannock, Staffs.
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Tue Jul 17, 2012 8:49 pm

If you want to go M52 then you'll need the loom & ecu etc too
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rich318i
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Tue Jul 17, 2012 9:33 pm

my mates got the lot ready to drop in, manifold, loom e.g
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shabalake
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Tue Jul 17, 2012 11:49 pm

rich318i wrote:my mates got the lot ready to drop in, manifold, loom e.g
more info on the engine?
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rich318i
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Wed Jul 18, 2012 12:48 am

it works lol not sure on the miles e.g think it did about 120k
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Wed Jul 18, 2012 6:57 am

Well if you just want to have an easy life, there is my short M50 engine for sale in the For Sale Section ;)

£50!!!
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shabalake
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Wed Jul 18, 2012 12:49 pm

E30BeemerLad wrote:Contact a member called BSS325i - Barry. He's a BMW tech and is in Surrey.

If you can travel further afield then the man for the job truly is DanThe, he's based near Cannock, Staffs.
How would I get in contact with Barry? Thanks alot Andy
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