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Home > Help Needed / General Tech Chat > Exhaust downpipe and system

ministef1

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730 Posts
Member #: 1791
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Cranleigh, surrey

Ok, so i've gone to a gt17 and managed to squeeze a 2.5" downpipe down the back of the block, but i was wondering if its worth continuing this onto the back box? So effectively i would have a 2.5 system all the way through? I don't have any gear linkage to get in the way as its internal? All thoughts appriciated.

stef

"Cars are a lifetime of pain"


wil_h

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Betwix Harrogate and York

I think it will be just fine.

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



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.


ministef1

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730 Posts
Member #: 1791
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Cranleigh, surrey

thanks wil, anybody else?

stef

"Cars are a lifetime of pain"


Bat

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Bermingum

Hi,
I can't see why not, it should save you having to step it down to 2" causing a restriction like I've had to.
Pictures please *wink*
Cheers,
Gavin :)

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Tom Fenton
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Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner

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Rotherham South Yorkshire

OTT IMO for a 1300cc engine. 2" known to work without problems or excessive noise. But if you can make it fit then why not.


On 29th Nov, 2016 madmk1 said:


On 28th Nov, 2016 Rob Gavin said:
I refuse to pay for anything else


Like fuel 😂😂


MikeRace

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#1 Basshunter Fan

Force Racing ICT Dept Manager Miglia Turbo Am frum Yokshyer tha noes!

Ive done 2 1/4" pipe all the way, just becuase i had plenty of stainless pipe.

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


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rubicon

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LONDONSHIRE

sounds like what should be done anyway,

On 2nd Oct, 2009 Vegard said:


On 1st Oct, 2009 Jimster said:
I bet my first wank came quicker than your first mini turbo


These new modern turbos with their quick spool up time, would make the competition harder.


On 15th Aug, 2011 robert said:
phew!!! thank you brett for smashing in my back doors .( not something i imagined writing... EVER)


cossierick

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3074 Posts
Member #: 1348
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wakefield West Yorks

Mines 2 ,1/2 all the way thru.

Have'nt had the car running with it on tho so no help am afraid.

Rick


fastcarl

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Fastest A Series Mini in the World

leeds/wakefield.

2" appears to support over 250 hp unless i'm very much mistaken[ and i'm not]. so unless your making more than that you are carrying excess weight in a bigger bore system,


carl

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