philwarren11
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Registered: 31st Jan 03
User status: Offline
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I'll be puttin an XE in my corsa soon and i was wondering about the manifold, i've read that it sits quite close to the ground and close to the anti-roll bar, i'll be gettin a full custom exhaust when the engine is in, but is there any companies that offer a 4-2-1 manifold for corsa conversions that i can get the exhaust fitted to?
What size bore should the exhaust be ideally? 2 1/4", 2 1/2" or 3''?
Cheers for the help.
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Adam-D
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Registered: 11th May 02
Location: Cheshire
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2" or 2 -1/4"
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TOMAS
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Registered: 7th Aug 02
Location: Nottinghamshire
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I'd use 2.25" bore. So your getting a custom manifold made? The std manifold is stainless 4-2-1 and is good for 180/190 BHP.
Its not that close to the ground, its only as close as the sump so if your gonna hit the manifold your gonna wipe out your alloy XE sump...
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deanmcreynolds26
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Registered: 15th Sep 03
Location: E46 //M3
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you also need spaces for the anti-roll bar!
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philwarren11
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Registered: 31st Jan 03
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quote:
Originally posted by deanmcreynolds26
you also need spaces for the anti-roll bar!
Yeah i know that.
I'd like to possible change the manifold as i'm gettin a custom pipe from the manifold, so i can get it all done at once.
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TOMAS
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Registered: 7th Aug 02
Location: Nottinghamshire
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What manifold do you want instead and what is your state of tune? The std one is fine, SBD do a mild steel one for around £200 and Lexmaul £330. They only offer minor gains on a std engine but if you tune it a bit you'll see a lot more benefits from an aftermarket manifold.
SBD is same fitment as your std manifold so the rest of your system (manifold back) should just bolt upto the new manifold should you change it...
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philwarren11
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Registered: 31st Jan 03
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Ok thanks for that, the engine has had a bit of work, cams and will be prted and polished and probably chipped with the usual filter and exhaust. Is it worth it?
And who sells them?
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TOMAS
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Registered: 7th Aug 02
Location: Nottinghamshire
User status: Offline
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Maybe not, considering SBD's mild one is £200 and lexmaul stainless is over £300! I'd say you should be fine with std manifold, just make sure the rest of the system is pretty free-flow to reduce back pressure slightly.
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