Pablo
Member
Registered: 3rd Feb 03
Location: Milton Keynes
User status: Offline
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What does it mean? Seen it on an astra and a corsa in last couple days
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--Dave--
Banned
Registered: 17th Feb 04
Location: Essssseeeeex Drives: Black Supra TT
User status: Offline
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Corsas and Astras with this means that they benefit from 'improved fuel economy'
Thats about it
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Pablo
Member
Registered: 3rd Feb 03
Location: Milton Keynes
User status: Offline
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Jus wondered
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liveseytowers
Member
Registered: 18th Apr 05
Location: Blackburn
User status: Offline
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Can you get say a 1.4 16V Twinport and a 1.4 16V non twinport? Just bought a 1.4 16V SXI and i aint even sure which it is
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Marc
Member
Registered: 11th Aug 02
Location: York
User status: Offline
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Yours will be twinport.
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Captain_Rosco
Member
Registered: 8th Dec 03
Location: Reading - Berkshire
User status: Offline
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I thought some one told me Twinport is similar to the DOHC
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Rob H
Member
Registered: 28th Oct 00
Location: Staffordshire Drives: Astra SRi
User status: Offline
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If its what i think it is then is something like:
You have two ports on the inlet manifold. While aunty ethil potters around doing her daily run around, only one will ever open. But when her grandson Dave the chav, lends the car on a weekend to pick up his 14 year old girlfriend and take her to the local teenyboppers club, when he floors it, both ports open up.
Basically a way of saving fuel, but improving air flow i think. Im sure Twin choke carbs used to do something similar  .
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danny-corsa
Member
Registered: 15th Mar 05
Location: Warwickshire Drives: Astra GSi 16v
User status: Offline
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quote:
Originally posted by Rob H
If its what i think it is then is something like:
You have two ports on the inlet manifold. While aunty ethil potters around doing her daily run around, only one will ever open. But when her grandson Dave the chav, lends the car on a weekend to pick up his 14 year old girlfriend and take her to the local teenyboppers club, when he floors it, both ports open up.
Basically a way of saving fuel, but improving air flow i think. Im sure Twin choke carbs used to do something similar .
thats exactly how it works 
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liveseytowers
Member
Registered: 18th Apr 05
Location: Blackburn
User status: Offline
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Ahh cool, Sounds like a good idea to me More Petrol available for when you cane it!
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Ojc
Member
Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
User status: Offline
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So it has two inlet ports per cylinder in the inlet manifold rather than 1.
So in other words its pointless.
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--Dave--
Banned
Registered: 17th Feb 04
Location: Essssseeeeex Drives: Black Supra TT
User status: Offline
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not sure, I don't have it though I know that 
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Hammer
Member
Registered: 11th Feb 04
User status: Offline
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quote:
Originally posted by Ojc
So in other words its pointless.
it manages to gain 5bhp and improve fuel economy by being pointless
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Ojc
Member
Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
User status: Offline
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But the 0-60 and top speeds remain the same on the SXi & SRi models.
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John
Member
Registered: 30th Jun 03
User status: Offline
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quote:
Originally posted by Ojc
But the 0-60 and top speeds remain the same on the SXi & SRi models.
Is that not good if it saves fuel though?
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Hammer
Member
Registered: 11th Feb 04
User status: Offline
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quote:
Originally posted by Ojc
But the 0-60 and top speeds remain the same on the SXi & SRi models.
Wheres that information coming from? its minimal but they're all defo faster to 60 and a few mph quicker top speed
Im not stickin up for it anyway, im told its meant to be really weird to drive almost as if its holdin back until you put the boot down
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danny-corsa
Member
Registered: 15th Mar 05
Location: Warwickshire Drives: Astra GSi 16v
User status: Offline
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its kinda besed on the V-TEC principle when ur not booting it ur saving fuel but when you put ur foot down you get the performance
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Rob H
Member
Registered: 28th Oct 00
Location: Staffordshire Drives: Astra SRi
User status: Offline
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quote:
Originally posted by Sxi04
Wheres that information coming from? its minimal but they're all defo faster to 60 and a few mph quicker top speed
The twinport 1.4's are actually the same speed and BHP as the older ones. They completely redesigned the engine, as there a different CC compared to the older model.
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Mikorsa16v
Member
Registered: 2nd Sep 02
Location: Burgess Hill, West Sussex
User status: Offline
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quote:
Originally posted by Rob H
If its what i think it is then is something like:
You have two ports on the inlet manifold. While aunty ethil potters around doing her daily run around, only one will ever open. But when her grandson Dave the chav, lends the car on a weekend to pick up his 14 year old girlfriend and take her to the local teenyboppers club, when he floors it, both ports open up.
Basically a way of saving fuel, but improving air flow i think. Im sure Twin choke carbs used to do something similar .
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