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Author Subject: MOT Emissions Uprated/engine conversion
dendle89

Senior User

Location: Cardiff

Registered: 29 Sep 2009

Posts: 827

Status: Offline

Post #1
Right, im looking at getting a V6, and im just wondering how it possible to pass an emissions test as the emissions will be so much higher compared to the 2.0.

Will a new working 2.0L cat be enough for the emission or should i look to get two cats welded into the exhaust system ? could i get a better cat ?

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Posted 16th Apr 2013 at 16:15
jamiek_uk2000

Seasoned Pro

Location: Llanelli

Registered: 18 Apr 2009

Posts: 1,925

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Post #2
Or a de-cat and a dodgy MOT Whistle

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Posted 16th Apr 2013 at 16:24
dendle89

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Location: Cardiff

Registered: 29 Sep 2009

Posts: 827

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Post #3
dont really want a dodgy MOT, but any supercharged lads or heavily moded 306 had any problems with emissions ?

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Posted 16th Apr 2013 at 17:59
blandy

Seasoned Pro

Location: Bucks

Registered: 25 Feb 2007

Posts: 2,437

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Post #4
If you engine swap properly so recorded on log book then emissions rules will be for a v6
Posted 16th Apr 2013 at 18:05
dendle89

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Location: Cardiff

Registered: 29 Sep 2009

Posts: 827

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Post #5
Yea im aware of this, i've considered doing this as the insurance isn't much different anymore

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Posted 16th Apr 2013 at 18:08
welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,817

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Post #6
it will pass just fine with the o.e 306 cat.

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Posted 16th Apr 2013 at 18:12
dendle89

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Location: Cardiff

Registered: 29 Sep 2009

Posts: 827

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Post #7
welshpug! wrote:
it will pass just fine with the o.e 306 cat.


Cheers mate thats all i wanted to know Thumbs up

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Posted 16th Apr 2013 at 18:19
ryangti6

Seasoned Pro

Location: Pontypool

Registered: 01 Sep 2006

Posts: 1,839

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Post #8
dendle89 wrote:
Yea im aware of this, i've considered doing this as the insurance isn't much different anymore


The one I've got isn't recorded on the log book yet as I havnt had it back but It's insured through greenlight for ~£350 fully comp with the engine swap declared. Oddly they seem to insure modified cars for less than if it was standard Crazy

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Posted 16th Apr 2013 at 18:21
scotzman

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Location: Dundee

Registered: 24 Jun 2011

Posts: 1,408

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Post #9
ryangti6 wrote:
dendle89 wrote:
Yea im aware of this, i've considered doing this as the insurance isn't much different anymore


The one I've got isn't recorded on the log book yet as I havnt had it back but It's insured through greenlight for ~£350 fully comp with the engine swap declared. Oddly they seem to insure modified cars for less than if it was standard Crazy


They probably go by the insurance group the donor car was.

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Posted 16th Apr 2013 at 18:35
jamiek_uk2000

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Location: Llanelli

Registered: 18 Apr 2009

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Post #10
How much will it affect the tax if the emissions are higher then? Does the same apply to supercharged cars since the emissions are through the roof?

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Posted 16th Apr 2013 at 18:35
ryangti6

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Post #11
Because they are pre 2001 tax is unaffected as far as I know as they are in the high group anyway

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Ryan
Posted 16th Apr 2013 at 18:40
welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,817

Status: Offline

Post #12
I just checked Autodata, 100 ppm HC and 0.3% CO for both engines.

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Posted 16th Apr 2013 at 18:53
swiftyboi006

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Location: Maidenhead

Registered: 12 Apr 2010

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Post #13
What ryangti6 said is correct all above a 2.0 is the same

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Posted 16th Apr 2013 at 19:11
JWP EFi

Turbo Legend!

Location: edinburgh

Registered: 07 Mar 2010

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Post #14
Interesting subject, i wonder how many tuned N/A, boosted peugeots are actually emission compliant
Posted 16th Apr 2013 at 21:54
welshpug!

Capt Pedantic

Location: Bigend, Wales.

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Post #15
All down to the mapper, if he's a lazy bugger, probably not.

I know I will do my best to get a cornish map, and probably use even less fuel than standard.

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Posted 16th Apr 2013 at 22:15
JWP EFi

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Post #16
welshpug! wrote:
All down to the mapper, if he's a lazy bugger, probably not.

I know I will do my best to get a cornish map, and probably use even less fuel than standard.


i heard that tuned n/a RS engines (within reason) actually give better mpg on a run.
Posted 16th Apr 2013 at 22:22
welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,817

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Post #17
yep, I went down to Saltash with my mate DCC and used less fuel on the way back on bodies than it did on the run down on standard inlet, even with a few warp 5 tunnel runs.

One of Sandy's highest spec TU5 engines returned about 42 mpg IIRC on a run back from mapping, that's a 230 Dyno bhp 225 ish in car BHP from a true 1600.

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Posted 16th Apr 2013 at 22:37
miles

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Post #18
No need to worry or have a CAT from what I have been told, as the engine was not fitted originally the emission test will default on to a 3.5% CO when you change the engine type on the emissions recorder

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Posted 16th Apr 2013 at 22:40
adam b

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Post #19
Mine was fine on emissions, well once it had a working lambda

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Posted 16th Apr 2013 at 23:12
coskev

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Location: Oswestry

Registered: 01 Nov 2009

Posts: 3,132

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Post #20
miles wrote:
No need to worry or have a CAT from what I have been told, as the engine was not fitted originally the emission test will default on to a 3.5% CO when you change the engine type on the emissions recorder


Pretty sure that's not the case.

From testers guide:

Vehicles Fitted with a differnt engine
Test according to which is older, engine or vehicle.
e.g. A 1995 car fitted with a 1991 engine (of whatever make), test to 1991 standards for emission purposes.
Note: The onus is on the vehicle presenter
to prove engine age.

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Posted 16th Apr 2013 at 23:15
JWP EFi

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Post #21
how exactly would we prove the age? most testers i know would tell you to feck off if you presented them with paperwork/engine numbers from a donor car. then again there are testers who are willing to shove the lambda probe up another cars exhaust pipe to get a pass
Posted 17th Apr 2013 at 22:40
coskev

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Location: Oswestry

Registered: 01 Nov 2009

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Post #22
T99PUG wrote:
how exactly would we prove the age? most testers i know would tell you to feck off if you presented them with paperwork/engine numbers from a donor car. then again there are testers who are willing to shove the lambda probe up another cars exhaust pipe to get a pass


It's there in black and white in the testers manual,so they couldn't refuse if you've got the required proofThumbs up
If they did just ask them for the VOSA number for complaints and they would soon change there tune I'm sureYes

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Posted 18th Apr 2013 at 09:46
beez_neez_gt

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Location: @ de limit of adhesion !

Registered: 14 Oct 2008

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Post #23
coskev wrote:
miles wrote:
No need to worry or have a CAT from what I have been told, as the engine was not fitted originally the emission test will default on to a 3.5% CO when you change the engine type on the emissions recorder


Pretty sure that's not the case.

From testers guide:

Vehicles Fitted with a differnt engine
Test according to which is older, engine or vehicle.
e.g. A 1995 car fitted with a 1991 engine (of whatever make), test to 1991 standards for emission purposes.
Note: The onus is on the vehicle presenter
to prove engine age.


Thats right, which ever is oldest and usually its the shell.

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Posted 18th Apr 2013 at 10:23
coskev

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Location: Oswestry

Registered: 01 Nov 2009

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Post #24
beez_neez_gt wrote:
coskev wrote:
miles wrote:
No need to worry or have a CAT from what I have been told, as the engine was not fitted originally the emission test will default on to a 3.5% CO when you change the engine type on the emissions recorder


Pretty sure that's not the case.

From testers guide:

Vehicles Fitted with a differnt engine
Test according to which is older, engine or vehicle.
e.g. A 1995 car fitted with a 1991 engine (of whatever make), test to 1991 standards for emission purposes.
Note: The onus is on the vehicle presenter
to prove engine age.


Thats right, which ever is oldest and usually its the shell.


Yeah usually,unless your building a kit car like my m8 did last year using a 1989 Uno TurboIE eng,he had some trouble getting paperwork to prove the age of that eng for IVA testThumbs down

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Posted 18th Apr 2013 at 11:49
beez_neez_gt

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Post #25
Would the engines V5 be enough, its just the XU10 engine isnt the best at keeping the engine code and a V5 could be any engine.

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Posted 18th Apr 2013 at 12:46

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