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Author Subject: Pre cats
offroad 68

Junior User

Location: stoke on trent

Registered: 29 Nov 2010

Posts: 58

Status: Offline
Post #1
I am putting a VVT V6 from a late 2000 406 in to a project, I am using the standard manifolds and the 2 in to 1 section. I read on the internet about the later mr2 VVT which has these gause pre cats which can start to break up and with the vvt it does actully suck back it to the engine a bit at times which wrecks the engine, It says take off the exhaust and knock them out with a hammer and screwdriver.
Just wondered if I should do the same with this v6 peugeot or could it cause other problems?
Thanks Lee.
Posted 24th Dec 2010 at 16:13
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,838

Status: Offline
Post #2
can't see any issue with removing them, the twin Lambda's they have are before these and after the 3rd cat IIRC, will your vehicle need to pass emissions tests?

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Posted 24th Dec 2010 at 16:37
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rallyeash

Seasoned Pro

Location: Devizes

Registered: 11 Dec 2006

Posts: 4,424

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Post #3
from reading another thread its going into a buggy so i'd doubt emissions would be a problem

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Posted 24th Dec 2010 at 17:52
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offroad 68

Junior User

Location: stoke on trent

Registered: 29 Nov 2010

Posts: 58

Status: Offline
Post #4
Yes its going in a buggy just for racing so no emmisions tests. I am thinking with being used hard on rough terrain if the pre cats were ever going to break up they would under these conditions. Will I gain any performance removing them?
Thanks Lee.
Posted 24th Dec 2010 at 20:46
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rallyeash

Seasoned Pro

Location: Devizes

Registered: 11 Dec 2006

Posts: 4,424

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Post #5
should "free" up abit of power yes

________________________________________

230 hp 2.1 16v XU 205 rallye on jenveysHyper Project thread here
309 3dr K20 Type R
Posted 24th Dec 2010 at 23:09
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miles

Seasoned Pro

Location: Ringwood

Registered: 28 Dec 2002

Posts: 3,433

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Post #6
I'd ditch the lot and use a proper manifold, this will gain a huge amount as the std stuff is rubbish

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Posted 25th Dec 2010 at 00:48
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offroad 68

Junior User

Location: stoke on trent

Registered: 29 Nov 2010

Posts: 58

Status: Offline
Post #7
miles wrote:
I'd ditch the lot and use a proper manifold, this will gain a huge amount as the std stuff is rubbish


As with all of my projects its about £ or my time vrs performance, If it goes well as it did in the car I will be happy. What does a tubular manifold set up cost, about £500/600 then it would need to be modified, or about 2 days of my time plus materials. The other thing that worries me is I am using the standard ecu which I do not want to mess with (chips etc) what would happen to the torque curve if it had a performance manifold? the last thing I need is flat spots.
Thanks Lee.
Posted 25th Dec 2010 at 01:21
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adam b

Seasoned Pro

Location: The Nam

Registered: 24 Jan 2006

Posts: 12,828

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Post #8
What system does the Clio V6 use?

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Nothing to see here
Posted 25th Dec 2010 at 03:21
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offroad 68

Junior User

Location: stoke on trent

Registered: 29 Nov 2010

Posts: 58

Status: Offline
Post #9
Not seen any pictures but sounds just like the Peugeot exhaust manifolds.
Posted 25th Dec 2010 at 04:25
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,838

Status: Offline
Post #10
I found pics of the clio's inlet Love

(can;t find the link now!!)

I know why people said they wont fit under a FWD bonnet now LOL


but can't find any exhaust shots.

________________________________________

need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Posted 25th Dec 2010 at 15:57
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