Thieving git*

[D9406]

Just read the MOT guide for testers on the VOSA site and it appears that if your car is subject to a full emissons test, ie petrol, a cat is needed if factory fitted, only visual test though whilst if an emmissions test is not required, ie diesel because they only test smoke, a cat is not required. Under section 7.1.
So it looks like a straight through pipe is OK for HDi's.

[Gary406]

i remember some1 telling me a few months ago about cats going missing off cars. apparently its big now to scrap men.

if it keeps happening then a decent alarm needs to be fitted. clifford do an alarm which beeps if some1 even steps near the car. it makes a bubble around it
and if they jack it up as well.

not cheap but if you replace a few cats then the alarm is paid for .

[leestudd30]

Last 4 MOT's I had done at the same garage all did emissions test on my car, I always thought the cat was needed too. Being as my old car always failed on that!

[lozz]

It may not need the cat,
but it may have to apear it Has one in place,

im sure its now part of the 'New mot Regs''

[teamster1975]

I can't believe someone had the neck to do that on your drive! I hope they cut their hands to ribbons getting it out

[D9406]

I can't believe someone had the neck to do that on your drive! I hope they cut their hands to ribbons getting it out

No such luck, very neat job, no sharp edges. Trolley jack under sill, jack up, throw exhaust cutter chain around pipe, quater of a turn and pipe is cut through, do this twice, and release jack. Job done. Minute tops.
Other than damage to sill not a mark on the car, if my neighbour hadn't seen the centre box hanging down the first I would have known about it would be on start up.
Whoever did it knew what car to target, about a dozen other cars in close vicinity not touched, but mine is the only car with the cat underneath, all others are in the engine bay.
I even have a gravel drive and 2 dogs who were asleep 15 feet away, and no-one heard a thing.

[piglet]

[quote="Turbo7379"] I removed mine after I got the car as I thought it was blocked. Car has went through 4 MOT tests since & no mention of the cat even though its obvious where I welded in the bypass section.

Does it go any better without?

[plod]

I spoke to an MOT tester and he said the way he sees it, if the car passes the emissions test, he ain't going to be looking for a Cat
Even though the way I read it, it needs to be there to pass the test.
My Mot is May, and the testers have been told to go easy on the new regs till end of April, so I can see my car going in exactly one month early whilst still preserving my expiry date

[rlees85]

your having a laugh! some people would steal your turd if you didnt flush it down the toilet

[D9406]

Been out sourcing parts this morning. Less than £20 for an adapter, a connector,length of pipe and clamps. Going to bolt it all up temporary and then get it all welded. One exhaust place has fitted 4 cats to cars that have had them cut off since Tuesday.

[Welly]

I don't suppose the thieves give a thought to the repair needed after so do people have to have short bits of tubing and couplers to get the CAT to fit back in?

Otherwise you'd need a new down-pipe and middle section too.

[lozz]

perhaps there targeting the 406 as it high off the ground,

must be away of stopping these bastids using one of them pipe cutters,

perhaps some blobs of Weld wouid stop the cutters going round,

gets me why they take cats off oldish cars why not go for brandnew ones ffs, theres plenty of new cars on display on them posh show ramps
if iwas a theif id hit them before leaving some poor chap thats done feck all wrong with a car thats useless and repair bill of half a weeks wage,

This shower of shite we live amongst needs shooting

[D9406]

For diesel engines

For compression-ignition (i.e., diesel engines), the most-commonly-used catalytic converter is the Diesel Oxidation Catalyst (DOC). This catalyst uses O2 (oxygen) in the exhaust gas stream to convert CO (carbon monoxide) to CO2 (carbon dioxide) and HC (hydrocarbons) to H2O (water) and CO2. These converters often operate at 90 percent efficiency, virtually eliminating diesel odor and helping to reduce visible particulates (soot). These catalyst are not active for NOx reduction because any reductant present would react first with the high concentration of O2 in diesel exhaust gas.

Reduction in NOx emissions from compression-ignition engine has previously been addressed by the addition of exhaust gas to incoming air charge, known as exhaust gas recirculation (EGR). In 2010, most light-duty diesel manufactures in the U.S. added catalytic systems to their vehicles to meet new federal emissions requirements. There are two techniques that have been developed for the catalytic reduction of NOx emissions under lean exhaust condition - selective catalytic reduction (SCR) and the lean NOx trap or NOx adsorber. Instead of precious metal-containing NOx adsorbers, most manufacturers selected base-metal SCR systems that use a reagent such as ammonia to reduce the NOx into nitrogen. Ammonia is supplied to the catalyst system by the injection of urea into the exhaust, which then undergoes thermal decomposition and hydrolysis into ammonia

Taken from the web re cats. So it seems that diesel cats do not contain precious metals and so are worthless in scrap value. Was told this earlier but decided to check it out myself so where is the sense in nicking diesel cats?

[lozz]

Hav'nt got aclue mate,

perhaps they thought your car was a petrol,

idunno whats inside of them wether there like the petrol ones or not,
imight get the angle grinder out tomoz and open one for curiosity

alls iknow mot tester just does a smoke test not emisions test, perhaps whats inside them cuts down the smoke they kick out,

[omega]

Hav'nt got aclue mate,

perhaps they thought your car was a petrol,

idunno whats inside of them wether there like the petrol ones or not,
imight get the angle grinder out tomoz and open one for curiosity

alls iknow mot tester just does a smoke test not emisions test, perhaps whats inside them cuts down the smoke they kick out,

id wear a mask if i was you.