[Closed] VAG diesel question

it's more efficient BUT it produces more amounts of gases (so the percentage of nasty gases are LESS but the volume is more) it's a loosing battle to get the cars efficient and powerful. you will see diesel engines in 10 + years time being a 2.0l engine but only producing 75-80 hp! once euro 6+ come in (currently euro 5 is due soon)

sticking your foot down at 30mph doing 1.1k in a diesel will/could easily kill the clutch and could easy twist and snap the crankshaft given modern diesel torque's. we see it in lorries a lot! (different torques and forces but the same applies). it's not when the engine is most efficient too, the car will overfuel to compensate for the "need" of the acceleration and you will get black soot/smoke, blocking up your DFP filters meaning they need to be serviced and changed sooner. your better to get to 1.8-9k after the turbo boost has kicked in and the clutch has got some movement in it, it's known to break duel mass fly wheels booting it at low RPM and with high torque loads.

thing my PD150 is 70mph @ 2k.

Ive got a Ibiza FR 130pd and had to replace the turbo recently, the car had done then 60k. The propellor shaft snapped on the intercooler side of the turbo. I drive my car pretty slow most of the time so could this be the clogging vein bit that was mentioned?

When i got mine (the 130 Sport is the older version of the TDi FR), it was 3yrs old with 24k miles on.
It was very sooty under acceleration.

A few weeks later & some spirited driving once it was nicely warmed up & it hardly smokes at all now.
A week of driving in grandad mode soon clogs things up though.

You get an impressive amount of soot (and an unimpressive drop in power)if your boost pipe fails!
Soon stops tailgating Vectras though!

@fozzybear it's the car's party trick. i've only done it when i've been feeling lazy. 43k and still on the first clutch with no slips yet *touching wooden desk* it eats tyres though.

@Buzzlightyear - no that is a turbo issue, sounds the like bearings have play and your service ppl never spotted it..

idontlikechips wow mine was changed at 58k the clutch would slip that was on the 150 bhp setup!

as for tyres, i've fixed the eating tyres issue. i have wider (225's) now and a slightly harder compound, loads of grip and a bit more noise but thats better that the less grip / vanishing rubber situation.

driving at revs of say 1.1-1.3krpm will kill the engine, but he's unable to explain why

Ive got a Ibiza FR 130pd and had to replace the turbo recently, the car had done then 60k. The propellor shaft snapped on the intercooler side of the turbo. I drive my car pretty slow most of the time so could this be the clogging vein bit that was mentioned?

Compressor surge will kill turbos, Buzz did/do you ever notice a funny juddering when accelerating? more subtle than DMF judder but very noticeable, anyway that's surge, say you put your foot down at 1500rpm in a high gear you will be asking the turbo to provide more boost than it can, air pressure will be higher post turbo which means it will pass back through the turbo the wrong way sometimes stalling the compressor wheel totally, smashing itself to bits or snapping the inpeller shaft.

It's a good idea to keep the revs above 1900-2000rpm unless you are cruising with very low load on the engine or in 1st or 2nd gear.

@fozzybear the p-zeros i'm using now have worn much better than the goodyears it came with, and i'm using 205 width tyres

fozzybear - which brand did you go for?

I have been using Goodyear Eagles on my Mrs 150bhp gt-tdi?

No i never noticed any judder and im carefull about putting the engine underload by putting the foot down when low revs, i would change down if needed. The turbo blew when accelerating out of a laybye on an Aroad to rejoin the main carriage way, i was in 2nd gear. Its been puzzling me why it went for a long time, the cars on 72k now and going fine on a recon turbo.

I use Kumho KU31s on mine and get ~30k miles out of the fronts - mostly motorway munching though on a standard car.

Camskill are cheap for them online - 205/45/16s were £105 for two delivered last time I needed some.

i changed to a 17" wheel and run falken tyres 452 will look to toyo proxes as a next tyre to test. very happy with the 452's though.

camskill are really good to.

@fozzybear toyo proxes are very good tyres but also very soft.

I do recomend P-Zero Neros, they were £90 per corner last time i got them, in 17/40/205, they are have been offering good grip all round and have been hardwearing

Buzzlightyear - Member
. Its been puzzling me why it went for a long time, the cars on 72k now and going fine on a recon turbo

Yes it was brought second hand on 28k, so i had travelled 30k in it before it went. it could well have been abused a bit before.