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Home > 998cc > 998 Exhaust system choice

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1137 Posts
Member #: 1450
Post Whore

Near Paris - France

13th Apr, 2009 at 08:52:31pm

Hi all,

Still rebuilding my 998 in N/A form but bearing in mind it will go turbo in the next 4 month or so.

As I am in the process of buying parts, I was wondering what exhaust I should go for.

basic choice is RC40 as they are supposedly quieter but I want your advice on the following :

standart bore (i believe 44 mm) or large bore ?

twin box or single box ?


My guess is that I have to go with large bore / single box but I would like a quiet system


My setup will be :
12G295 head more or less standart (new bronze guides)
IC
standart pistons
Metro turbo carb and manifold
SPI exhaust manifold and Clutch mounted turbo
T2 or GT15
7 to 10 psi
Target : 100hp at the flywheel

Rusty by nature

On 23rd Jun, 2008 paul wiginton said:
They said "That sounds rough mate." I said "Cheers it cost me a fortune to make it sound like that!"


wil_h

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9258 Posts
Member #: 123
Post Whore

Betwix Harrogate and York

13th Apr, 2009 at 08:57:12pm

Any 2" system will be fine.

I use the maniflow single box system. Nice and quiet with a subtle but nice side exit.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.

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