L885 1.28v
Member
Registered: 7th Aug 03
Location: Copthorne, Nr Gatwick
User status: Offline
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a 1.4 spi to a 1.4 mpi
how much and is it worth it
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Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
User status: Offline
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Fuel pump, injectors, as far as i know.
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Siberia
Member
Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
User status: Offline
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an inlet maybe?
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Rileysport
Member
Registered: 18th Jun 04
Location: West Yorkshire
User status: Offline
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Get full head and manifolds off the mpi, and the pump, fuel connectors etc.
Pistons may be different though 
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James R
Member
Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline
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do a search it's been posted millions of time.
There's a lot to it, it's just easier to swap the whole engine.
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PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
User status: Offline
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compression ratio of the SPi is lower than the MPi so the pistons are different... the poskets are deeper on the SPi to lower the compression.
SPi - 9.5:1
MPi - 10:1 or around that
[Edited on 25-11-2004 by PaulW]
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James R
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Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline
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The head design is also different, in the ports and valves are larger.
You'd need
Head
Cam
inlet manifold
Exhaust manifold
Loom
DIS pack
Fuel pump
Also if the engine Spi doesn't have a crank sensor then you'd need
oil pump
crank sensor
Crank pulley
so just swap the engines over 
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PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
User status: Offline
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i used a 1.4sri 8v head on my SPi engine, kinda helped torque a bit & top-end power, but was still running the SPi setup... 
only main issue i had was it ran a bit lumpy when cold with the sri head
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Rileysport
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Registered: 18th Jun 04
Location: West Yorkshire
User status: Offline
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my SRi's lumpy when cold anyway
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PaulW
Member
Registered: 26th Jan 03
Location: Atherton, Greater Manchester
User status: Offline
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must be something with the ports  duno...
still it sounded 'different' when it was done 
i want another corsa with an 8v engine  there sooo nice to work on!
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Rileysport
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Registered: 18th Jun 04
Location: West Yorkshire
User status: Offline
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quote:
Originally posted by PaulW
must be something with the ports duno...
still it sounded 'different' when it was done
i want another corsa with an 8v engine there sooo nice to work on!
thats why i'm trying to build a 2.0 8v turbo 
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PaulW
Member
Registered: 26th Jan 03
Location: Atherton, Greater Manchester
User status: Offline
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I wana build an 8v on carbs - then get shut of the ECU
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L885 1.28v
Member
Registered: 7th Aug 03
Location: Copthorne, Nr Gatwick
User status: Offline
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what difference does it make putting a mpi head on it then? could you also put a mild cam in the mpi head and get a decent power increase???
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PaulW
Member
Registered: 26th Jan 03
Location: Atherton, Greater Manchester
User status: Offline
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if you dont change the pistons, the compression ration will be lower & cause the engine not to run as well as it should as its N/A & not forced induction.
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Rileysport
Member
Registered: 18th Jun 04
Location: West Yorkshire
User status: Offline
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quote:
Originally posted by L885 1.28v
what difference does it make putting a mpi head on it then? could you also put a mild cam in the mpi head and get a decent power increase???
the cam in the mpi head aint anything that special
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