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Home > Technical Chat > Metro turbo engine without the turbo

asmith88

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29th Jul, 2010 at 06:56:32pm

im trying to understand this engine and figure out if its worthwhile..

first of all the pros and cons of the engine without the turbo
does it still have the mg camshaft from the 1300?
is the engine capacity 1300?
will it have any power increases from the standard 1275?

any downsides?

sorry but i have tried searching and found no great answers to my specific questions

thanks andy

apbellamy

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King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner

Rotherham, South Yorkshire

29th Jul, 2010 at 07:01:36pm

The 1275 metro turbo engine is a standard 1275 block, with uprated pistons, in some cases a hardened crank, uprated oil pump, standard cam, standard valve sizes in the head and sodium filled valve guides.

If you run it as n/a you will just be running a standard 60ish BHP engine.

The gearbox is the same, but with a 3.2:1 crown wheel and pinion instead of a 3.4:1

The MG engine is a standard 1275 engine, with an uprated cam and larger valves. Otherwise identical.

EDIT: Welcome to TM, the search button is your friend.

Edited by apbellamy on 29th Jul, 2010.

On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it

*hehe!*

wil_h

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29th Jul, 2010 at 07:03:44pm

On 29th Jul, 2010 asmith88 said:
does it still have the mg camshaft from the 1300?

No, it has a standard 1275 camshaft

On 29th Jul, 2010 asmith88 said:
is the engine capacity 1300?

standard was 1275cc

On 29th Jul, 2010 asmith88 said:
will it have any power increases from the standard 1275?


No.

On 29th Jul, 2010 asmith88 said:
any downsides?


Well you could run higher CR than the standard turbo CR, but at 9.3:1 it's not that low.


Fastest 998 mini in the world? 13.05 1/4 mile 106mph



On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


asmith88

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Member #: 9011
Junior Member

29th Jul, 2010 at 07:22:09pm

ok, so its pointless really unless the turbo is on it?

Tom Fenton
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29th Jul, 2010 at 08:04:17pm

It will be slower than a MG Metro non turbo engine, if both are in good condition, if that is what you are asking.


On 29th Nov, 2016 madmk1 said:

On 28th Nov, 2016 Rob Gavin said:
 I refuse to pay for anything else


Like fuel 😂😂

Mr Joshua

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Luton Bedfordshire

31st Jul, 2010 at 11:05:10am

The heads are quite different between the turbo and the MG Metro.

The turbo inlet and exhaust valve sizes are a bit smaller than the TAM1059 and TAM1061 valves fitted to the MG head as standard. Also the chambers and throats are different shapes as standard in the MG head along with having hardened valve inserts fitted for the exhaust valve seats.

Own the day


Turbo Phil

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Lake District

31st Jul, 2010 at 01:02:46pm

Not strictly true. The early NA MG Metro heads had the larger 35.7mm inlet, but the later unleaded MG heads were downgraded to the smaller 33.3mm inlet.

WWW.TURBO-MINI.COM

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