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Author Manifolds?!?!? Question
chris_uk
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Registered: 8th Jul 03
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11th Jul 03 at 11:28   View Garage View User's Profile U2U Member Reply With Quote
Hi,

would changing the manifolds do owt to my car, Corsa C 1.2 sxi 16v.

how much would it cost & what sort of performance increase would i be looking at?

Cheers Fellas!
drunkenfool
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Registered: 7th Feb 03
Location: Hereford Drives: Audi R8 V8
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11th Jul 03 at 12:15   View User's Profile U2U Member Reply With Quote
i think manifolds are around £400, powergains around 8bhp.
miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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11th Jul 03 at 13:29   View User's Profile U2U Member Reply With Quote
8bhp my ass. Maybe 2/3. Depending on how bad the original is.
chris_uk
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11th Jul 03 at 13:37   View Garage View User's Profile U2U Member Reply With Quote
what single mod would give me the most bhp increase
lacky75
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Registered: 8th Dec 02
Location: Norwich
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11th Jul 03 at 13:49   View User's Profile U2U Member Reply With Quote
This topic was posted a few days ago, have a look for a post named 1.2 16v !!!
dousey
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Registered: 21st May 03
Location: Selsey, West Sussex
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11th Jul 03 at 16:11   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by chris_uk
what single mod would give me the most bhp increase


Nitrous!
JoeyB
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Registered: 19th Jun 03
Location: Fareham HANTS, Drives: Astra Coupe Turbo
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11th Jul 03 at 16:24   View User's Profile U2U Member Reply With Quote
Yep NOS al day long.....or a cheap Supra! lol
corsa120
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Registered: 4th May 02
Location: Northamptonshire
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11th Jul 03 at 17:38   View User's Profile U2U Member Reply With Quote
u talkin bout exhaust manifold or inlet
exhaust manifold may give 5/6% power gain on sxi 65bhp will take it to 68.9bhp
5/6% on 1.4 16v is 95.4bhp

inlet manifold from lexmaul/velos etc
sxi 65bhp claims 20% powergain from these is roughly 78bhp
1.4 16 at 90bhp with inlet manifold will go to 20% powergain is 108bhp

however these may vary from car to car as no engine is same as no 2 machined parts are exact and condition of engine miles etc all play a important role.

correct me if im wrong boyz
Tom
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Registered: 3rd Apr 02
Location: Wirral, Merseyside
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11th Jul 03 at 17:51   View User's Profile U2U Member Reply With Quote
dint know u cud get inlets from lex for 1.2 16v?
dousey
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Registered: 21st May 03
Location: Selsey, West Sussex
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11th Jul 03 at 19:13   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Tom D
dint know u cud get inlets from lex for 1.2 16v?


You're right, u can't!
Fad
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Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
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11th Jul 03 at 19:29   View User's Profile U2U Member Reply With Quote
u may only get a few bhp form an exhaust manifold but u may gain sum more torque too that is noticable
chris_uk
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Registered: 8th Jul 03
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11th Jul 03 at 21:58   View Garage View User's Profile U2U Member Reply With Quote
the 1.2 16V had a standard 75 dont it????? im on about the corsa c tho
chris_uk
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11th Jul 03 at 22:03   View Garage View User's Profile U2U Member Reply With Quote
see 75 BHP! http://www.corsasport.co.uk/board/viewthread.php?tid=42180
miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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11th Jul 03 at 22:04   View User's Profile U2U Member Reply With Quote
if a 1.2 has 75bhp to start with then it must be fairly hot as standard. So gains will be minimal.
Dbilascorsa
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Registered: 30th Jun 05
Location: Rotterdam
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25th Sep 05 at 18:27   View User's Profile U2U Member Reply With Quote
I would change the inlet manifold and not the exhaust manifold.
This because the cat is in the manifold it self. And there are only replacements for de Z18XE engine. I am using engine codes, because here in the Netherlands this engine is a GSi, and in the UK SRi.

The inletmanifolds from Dbilas are quite good.
Corsa C 1,2 16V 55kW Z12XEn HP gain: 17/23.

If you need to change your distributionbelt then I would suggest other sportier cams. From Dbilas offcourse

 
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