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Author 1.4 8v twin point inj
kupo
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Registered: 15th Jun 05
Location: rom, essex
User status: Offline
25th Jun 05 at 20:53   View User's Profile U2U Member Reply With Quote
hiya i jus recenlty got a corsa and when me and my friend looked at he engine he said it was a twin point inj.
is he right?
what does this mean in terms of bhp and so on?? is it any better.

its a R reg breeze.

thanks for any help.
Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
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26th Jun 05 at 08:14   View User's Profile U2U Member Reply With Quote
i thought only the SRi had MPI 1.4 8v?
chr15barn3s
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Registered: 5th Oct 03
Location: Farnborough
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26th Jun 05 at 19:51   View User's Profile U2U Member Reply With Quote
twin point injection?

i thought there was only single injection and multi point where you have 4
klx_boy_2k4
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Registered: 13th Sep 04
Location: Middlesbrough
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26th Jun 05 at 20:20   View User's Profile U2U Member Reply With Quote
yeah multipoint is where there is 2 injectors per cylinder, my dads 04 astra G has it.
ed
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Registered: 10th Sep 03
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26th Jun 05 at 20:32   View User's Profile U2U Member Reply With Quote
Multipoint injection Vauxhall engines use 1 injector per cylinder, i.e. 4 injectors for the 1.4 mpi.
Rob_Corsa
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Registered: 4th Apr 02
Location: Derbyshire
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26th Jun 05 at 20:47   View User's Profile U2U Member Reply With Quote
If the airbox is sat on top of the engine then it has either a carb of Single Point Injector. Lift the airbox off and you should see 1 injector with a pair of wires going to it.
ed
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Registered: 10th Sep 03
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26th Jun 05 at 23:02   View User's Profile U2U Member Reply With Quote
Single point injection engines don't have a carb.

To distinguish between MPi and SPi engines you look for a fuel rail and 4 fuel injectors on the inlet manifold just before the head. If you have that you have an MPi engine, if you don't you have an SPi enigne.
Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
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27th Jun 05 at 02:41   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Rob_Corsa
If the airbox is sat on top of the engine then it has either a carb of Single Point Injector. Lift the airbox off and you should see 1 injector with a pair of wires going to it.


tha airbox is located next to the wing regardless of its injectors and its not going to have a carburettor of its got fuel injection
klx_boy_2k4
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Registered: 13th Sep 04
Location: Middlesbrough
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27th Jun 05 at 06:47   View User's Profile U2U Member Reply With Quote
Sorry for that up there I meant Twin Port not multipoint lol i was tired
Rob_Corsa
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Registered: 4th Apr 02
Location: Derbyshire
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27th Jun 05 at 07:15   View User's Profile U2U Member Reply With Quote
Sorry, was getting confused with mk3 fiesta for some reason.
On the mk3 fiesta the Single Point Injection units look just like a carb.
Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
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27th Jun 05 at 07:42   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by klx_boy_2k4
Sorry for that up there I meant Twin Port not multipoint lol i was tired


ok well multiport is its separate valves opening and shuting independently according to throttle load. This creates more efficient combustion, as with petrol direct injection, but is cheaper than these expensive and complex systems.

[Edited on 27-06-2005 by Cybermonkey24]
Darren
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Registered: 21st Apr 02
Location: Hadleigh, Suffolk
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27th Jun 05 at 12:02   View User's Profile U2U Member Reply With Quote
thought twinport was only on the C's?
Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
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27th Jun 05 at 23:20   View User's Profile U2U Member Reply With Quote
yeah it is, and there is no 1.4 8v in the C range
waynep
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Registered: 20th Apr 02
Location: london
User status: Offline
28th Jun 05 at 10:54   View User's Profile U2U Member Reply With Quote
hehe rob hello

 
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