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Author 2.0XE and aluminium blocks
jonix
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Registered: 14th Apr 02
Location: South Bucks
User status: Offline
2nd Oct 03 at 11:01   View User's Profile U2U Member Reply With Quote
Hi,

Does anyone have any experience of using an aluminium block with the 2.0 16V XE engine? I have heard that it is possible for engines like this to seize. Is there any truth to that?

I'd be interested to hear from anyone who knows something about this topic, how long the engines last, how highly you can tune them and where you can source the blocks from.

Cheers, Jon
miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
User status: Offline
2nd Oct 03 at 11:15   View User's Profile U2U Member Reply With Quote
Ask on www.migweb.co.uk

Im think alu blocks are only used on the very top end of tuning, ie, late 200's....
jjcymru
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Registered: 28th May 02
Location: ammanford,south wales
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3rd Oct 03 at 11:21   View User's Profile U2U Member Reply With Quote
alu block just reduces weight, over cast iron.

Obviously if an engine is tuned to within an inch of its life then reliability may be an issue.

But the main benefit of a alu block is just the weight loss factor.
MikeH
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Registered: 3rd Apr 03
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3rd Oct 03 at 11:32   View User's Profile U2U Member Reply With Quote
Heat dissipation too perhaps.... just a thought
jjcymru
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Registered: 28th May 02
Location: ammanford,south wales
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3rd Oct 03 at 11:46   View User's Profile U2U Member Reply With Quote
indeedy but if u can afford 10k odd on an engine rebuild then i doubt ud be using a standard Rad, and consider a copper core alternative.
Dave Hay
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Registered: 10th Apr 02
Location: Aberdeenshire
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3rd Oct 03 at 14:48   View User's Profile U2U Member Reply With Quote
aluminium has a very low melting point... i wouldnt think heat dissapation is very good with alu as combustion is at 2000degrees celsius so i cant see aluminiun blocks lasting too long if engines highly modified.

nice and light though but a bit "soft" for a decent bottom end maybe!
jjcymru
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Registered: 28th May 02
Location: ammanford,south wales
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3rd Oct 03 at 17:47   View User's Profile U2U Member Reply With Quote
alu blocks have steel liners like the 205 gti's have.

Aluminium requires 2800 degrees mixed with cryolite and fluorine gas in order to melt. To melt it in its standard state over 4000+ degrees are required according to the purity of the metal.
4x4Chris
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Registered: 1st Jul 01
Location: DURHAM
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3rd Oct 03 at 19:21   View User's Profile U2U Member Reply With Quote
Alloy XE block
miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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3rd Oct 03 at 19:26   View User's Profile U2U Member Reply With Quote
drools.....
IntaCepta
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Registered: 25th Mar 02
Location: Mill Hill East, Greater London
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4th Oct 03 at 00:13   View User's Profile U2U Member Reply With Quote
that looks nice
jonix
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Registered: 14th Apr 02
Location: South Bucks
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4th Oct 03 at 00:23   View User's Profile U2U Member Reply With Quote
QED appear to be the only people supplying these blocks and they're certainly not cheap.

It can knock about 20Kg off the weight of your engine.

Does anyone know how much a 1.6 weighs?
Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
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4th Oct 03 at 08:34   View User's Profile U2U Member Reply With Quote
my 1.6 weighs about 970kg.
MikeH
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Registered: 3rd Apr 03
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4th Oct 03 at 10:26   View User's Profile U2U Member Reply With Quote
20kg is about the weight of your spare wheel isn't it?
miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
User status: Offline
4th Oct 03 at 11:04   View User's Profile U2U Member Reply With Quote
I thought the 2.0 with box etc weighed about 150kg, and the 1.6 with box etc 120kg.

My car with c16xe weights 810kg.
jonix
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Registered: 14th Apr 02
Location: South Bucks
User status: Offline
7th Oct 03 at 14:12   View User's Profile U2U Member Reply With Quote
30Kg weight difference doesn't sound that much but if it is that small, it appears to have a real adverse affect in terms of handling.

 
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