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Corsa Sport » Message Board » General Chat » 1.4i Ls Single point injection?


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Author 1.4i Ls Single point injection?
the_legend_of_yrag
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Registered: 7th Jul 03
Location: Cambridgeshire
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4th Jun 05 at 22:14   View User's Profile U2U Member Reply With Quote
As the title says 1.4i Ls's are single point injecting this spi version and then you have the multi point (mpi) version?

But dont the spi's run on carbs aswell? If so how does this work as me an my old chap, were having a debate about it.

ryzer
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Registered: 18th Mar 03
Location: Berkshire Drives:UGLY MUG
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5th Jun 05 at 00:18   View User's Profile U2U Member Reply With Quote
spi is a single injector, injecting the fuel into the carb itself, rather than into each cylinder, which is what happens with MPi
mazdaspeed
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Registered: 8th Jan 05
Location: Darlington
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5th Jun 05 at 00:34   View User's Profile U2U Member Reply With Quote
Carb and injection are totally seperate.

The Spi design has a four branch inlet manifold and the injector is at the top above the butterfly valve.

MPi design has the injectors just before the ports in the head.

Carb design uses the vacuum to suck a mix of fuel and air through into the cylinder.

Its late
Jake
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Registered: 24th Jan 05
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5th Jun 05 at 19:32   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by the_legend_of_yrag
But dont the spi's run on carbs aswell? If so how does this work as me an my old chap, were having a debate about it.


you were having a discussion with your penis
Steve
Premium Member

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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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5th Jun 05 at 19:35   View Garage View User's Profile U2U Member Reply With Quote
no carb car is injection
AndyW
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Registered: 28th Oct 02
Location: Greater London
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5th Jun 05 at 20:13   View User's Profile U2U Member Reply With Quote
dunno but spi is pants

 
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