FRATEone
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Registered: 24th Oct 08
Location: England - Birmingham
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What does Twinport mean
That there is 2 inlet & 2 exhaust valves per cylinder (making it a 16v car)
?
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Fraser Young
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Registered: 26th Dec 02
Location: Dundee City Drives: 58 Impreza WRX
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Nah, plenty of pre-twinport 16v engines;
Its a GM thing re. emissions 'technology'
Using Variable timing and increased EGR or something like that.
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Mr Turner
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Registered: 20th Oct 07
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basicaly it is another word for 16v
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John
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Registered: 30th Jun 03
User status: Offline
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It's not another word for 16v, not even close to meaning anything to do with that.
It's got a flap in the inlet manifold that directs exhaust gases back into the engine or something along those lines.
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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Joe has told me before but I've forgot.
He reckons the non-Twinport engines are better.
*shrugs*
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Mr Turner
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Registered: 20th Oct 07
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when i asked at vauxhall they told me it was basicaly another word for 16v, oviously there must be more to it than that but thats all they said to me
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punkymt1
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Registered: 8th Oct 05
Location: Malta
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Twinport is a sort of Variable induction system. Opel/Vaux use twinport but other names exist for the same technology such as Porsche's VarioRam. In vaux's case two ports exist with a choke to close one at low rpm hence creating a swirl pattern of air inside the combustion chamber. This improves fuel economy.
Other car manufacturers vary the cross sectional area of the intake manifold tracts to pressurize the air going in.
Hope this helps 
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Ellis
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Registered: 11th Sep 07
Location: Aberdeenshire
User status: Offline
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quote:
Originally posted by Mr Turner
When i asked at vauxhall they told me it was basicaly another word for 16v
Typical motor salesman, too much hair gel and no knowledge
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Mr Turner
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Registered: 20th Oct 07
User status: Offline
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lol sounds about right
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