I will vouch for the fact that Jason's car will happily rev to about 5200 rpm

Limiter on the MOT....I thought that it was only supposed to be up to about 3000rpm ish, I'll ask my mate, he does MOT's.

They do a test at idle and one at 'elevated revs' not flat out.

afaik they dont do them flat out and on the print out it will say the rev's and at what output the co2 was.

afaik they dont do them flat out and on the print out it will say the rev's and at what output the co2 was.

Nope, there isn't a CO2 test for diesels, only petrols. The only emmisions test that has to be passed for the VRS is to check that there isn't an excessive amount of particles thrown out the exhaust (in other words, it isn't too sooty).

I'm not entirely sure how they test it, but they'll need to rev the engine somewhat for it I'd imagine. Whether that means red line or not is beyond me! :confused:

They take it to the limiter when testing diesels, on petrols they hold it at around 3000 rpm. CO2 is not measured on the MOT, CO is - they are two completely different gasses.

Ah ha!

Metered Smoke Test (Diesel)

The metered smoke test has been conducted in

EU countries for many years. During this test, a

calibrated smoke meter is used to assess the

density of the smoke from compression ignition

(diesel) engined vehicles.

The engine will be accelerated up to governed

speed and the smoke density measured.

Note the bold text above - it will be pushed to the limiter.

(source: http://www.dvtani.gov.uk/uploads/customerservices/DieselandCATleaflet.pdf)

Would a PD160 inlet affect this test in any way (improvement)?

TH

According to the separate thread on the subject, a PD130 with a PD160 inlet pipe is less smokey (and yes someone did a test with both).

On the "smoke opacity" point, is there anyone who makes a habit of revving a diesel into the governer for any reason other than MOT preparation?

i always red line my car you have to floor it to even move in my 1.4 16v :(

cant wait for my vrs coming this time next year

you can change down a gear at too high a speed and send the revs well into the red, try putting it in second at 60mph!..................No, really don't do it!

I put a my coupe turbo unintentionally into 2nd at 96mph.....didnt really go that well.

No gearboxs were destroyed during the making of this video:rofl:, which really was a suprise. I was expecting to look in the rear view mirror and see shards of gearbox casing. The rev counter went around to about 6 o'clock.

Good job the gear wasn't fully meshed, otherwise i think id have snapped the timing belt.

On the "smoke opacity" point, is there anyone who makes a habit of revving a diesel into the governer for any reason other than MOT preparation?

Usually give someone a 2nd gear smoke on a national speed limit road if they've been tailgating me for miles upon miles. But usually thats far and few between as im in Sheffields bumper to bumper traffic 5 days of the week.

Edited 21 August, 200817 yr by Browny_37

I hit my limiter for the first time the other day and the damned saxo still won :(

Nope, there isn't a CO2 test for diesels, only petrols. The only emmisions test that has to be passed for the VRS is to check that there isn't an excessive amount of particles thrown out the exhaust (in other words, it isn't too sooty).

I'm not entirely sure how they test it, but they'll need to rev the engine somewhat for it I'd imagine. Whether that means red line or not is beyond me! :confused:

sorry that is what i meant(petrol) as ive never had a diesel.

Just watched that video is that when it just clunks and the revs die then you poppped it into second?