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alex730i 
Newbie
Joined: 27-January-2005
Location: south coast uk
Status: Offline
Points: 10
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 Topic: BIG ENDS
Posted: 27-January-2005 at 08:26 |
Hi,
Does anyone know if it is possible or has tried to drop the sump on an E32 3 litre to replace the bigends & rings.
thanks & regards
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Nick
Bavarian-Board Contributor
BMWCC Area Organiser Yorks & Humber
Joined: 21-October-2002
Location: God’s own county... Yorkshire
Status: Offline
Points: 1319
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Posted: 27-January-2005 at 15:00 |
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I get my engine codes mixed up.. is that the M24 motor?
The sump comes off easy.. there are lots of bolts to undo and the ones near the flywheel are a pain.
Do you really mean to replace the big ends.. dont you mean the big end bearings.. if they have worn through to the big ends I should consider a replacement engine would be cheaper in the long run.
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Andyboy
Banned User
Joined: 04-June-2003
Status: Offline
Points: 707
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Posted: 28-January-2005 at 11:41 |
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I agree. If your engine has crank issues (you can't
successfully regrind them), then really it's scrap and
you need another engine. Fit a 3.5 whilst you're at it,
it won't use any more fuel.
The sump comes off with a struggle but to change
the rings the head needs to come off - that's a pain
in itself. As well as a sump gasket and bearing
shells, you'll need a complete set of new con rod
bolts as they're only to be used once. That's about
£120 worth of bits. A set of rings is another £100,
head gasket set £40-50.............
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alex730i
Newbie
Joined: 27-January-2005
Location: south coast uk
Status: Offline
Points: 10
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Posted: 28-January-2005 at 14:56 |
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Thanks both of you, obviously I meant the big end & main shells, bothof which can easily be replaced. The main purpose of the query was to ascertain if anyone had done it without removing the engine.
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Andyboy
Banned User
Joined: 04-June-2003
Status: Offline
Points: 707
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Posted: 29-January-2005 at 06:50 |
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In a word, yes you can. I did it on an E12 M535i to
cure (usuccessfully as it happens...) a weird rattle at
over 4000 rpm. The trouble is, by the time you need
new big end shells, the crank journals will be oval. If
it needs mains shells as well, the engine is best
used as a boat anchor. You can only replace the
bottom mains shells (i.e the ones in the caps)
because the crank has to come out to change the
upper ones.
If the big end shells are really worn down to the base
metal, new shells probably won't do much at that
stage although as a way of keeping an old engine
going it'll work I guess. If the conrods have studs and
nuts, you can get away with re-using them, bolts you
can't.
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286bhp
Groupie
Joined: 27-January-2005
Location: Herts & Middx
Status: Offline
Points: 88
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Posted: 30-January-2005 at 03:34 |
A new Nikasil short engine can be had from the main delaers for about £1000 ish, which comes complete with pistons , crank & rods all preassembled. It has all the parts needed to install into the car except flywheel bolts & rocker cover gaskets , some even come with an oil filter ! For this reason I would never rebuild an early nikasil M60 engine but simply have the peace of mind of having a new Alusil short engine fitted. BMW issued these engines to dealers to help with the infamous Nikasil warranty jobs carried out over the last few years .
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'01 M5
'02 MB C220 Turbosmoker
'99 323i (sold )
'89 M3 220hp with shrick 284's
'73 2002 cab
it's an Illness ......
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Andyboy
Banned User
Joined: 04-June-2003
Status: Offline
Points: 707
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Posted: 06-February-2005 at 13:13 |
 286bhp wrote:
A new Nikasil short engine
can be had from the main delaers for about £1000
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I think he may have been talking about a six cylinder.
'01 M5'................29.4% APR Great Trade Centre
wrongness? Honestly, they'll give anyone car credit
these days. How's the '93 Cavalier Diesel, fitted a
new fan belt yet? 
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BIG ENDS