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Posts posted by mk2

  1. What does your gear stick knob look like (seriously!)? One of my SDIs in poverty spec with wind up windows has a dimpled thing with the shift pattern embossed into the knob. I'm trying to find another as I personally prefer it to the chromed ring type you get in the S spec cars...

    I'd stick to manual windows in a Lupo. The control switches are in the wrong place. Who wants to control windows with the buttons under your elbow.

  2. One of my SDIs tests at 0.3 smoke level on emissions.... better than many brand new diesels! The wierd thing is that if you look on the compliance plate/sticker in the engine bay, it says 0.7 is the limit. UK MOT tests the level to 1.5 I think (or is it 2.5 smoke?), but they are "meant to" test to the compliance plate limit- if visible. NOX still isn't part of testing, but I'll be very interested to see what levels our diesels chuck out when/if it ever comes in. EGR is disabled on all mine (and gas flowed/ported), so technically NOX should be quite high when the engine is cold. But in the current MOT, they only check exhaust gases when the engine is hot, so I can't imagine the test ever failing. But what do I know about this nonsense... (not much).

    There is something called a "blue angel" cat that you can fit to an SDI, which apparently brings down emissions to almost clean air (other than the CO2).

    • Like 1

  3. I think someone on here did a 4wd conversion once- using off the shelf vdub parts from an older mk2 syncro or rallye. Straight in with no welding, except the fuel tank, exhaust and propshaft (propshaft services ltd) had to be custom made. I think they got around the outer cv joint problems by switching from ball bearing type CV joints to a tri-pot roller race joint (golf or polo or something- can't remember). I think you could probably do maybe an extra 50-75mm without too much hassle. Just watch the front drive shafts. Spring spacer plates or even air suspension works.

  4. I can't think of any problems other than the outer cv joints. Especially the left one. You'll need to adjust the rear brake compensator thing too, and the front tracking (it would start toeing out).

    You might want to do what vdub (or that Austrian tuning company) did with the "mk2 golf country" edition. They lifted the whole car about 140mm!!! Drop the front subframe, change the struts. Extend the steering column. And pipes, gear shift, electrics etc...

  5. Yes. But I wouldn't use SVO alone. Ever. You need to lower the viscosity to avoid pump cavitation. That said, you'll still have some cavitation when there's glycerol in the mix. You could add kerosene to the SVO to lower the viscosity during cold weather. Every ten tanks run on pure high grade diesel.

  6. I'm biased. Mk2 is IMO the best car ever made. Sure there are lots of compromises, but taking everything into account it wins. Noisy. Yes. Uncomfortable. Yes. Economical. No. Simple. Yes. Reliable. Kind of. Fun. Sort of. Easy to maintain and repair. Yes. Well made. Absolutely. Do they last. Yes. 30 years old now and neglected cars that occasionally pop up on ebay are still running (just). You can't say that for just about any other car. 👍🏻

    I have more than one Lupo however.... :)

    • Like 2

  7. 13 hours ago, Stephenmacleod said:

    and are these nozzles a standard from another vehicle or custom? thanks

    Standard nozzles from a 1.9 TDI. You need the same dispersion pattern or spray, so the only thing you can change (realistically) is the size of the injector holes. The rest of the diesel system is identical. Mapping is different though as the 1.7 pumps less air than a 1.9 TDI.

    The trouble is that the amount of air needed to burn any extra fuel isn't really available, so you get a choking mix, giving you black smoke. And the speed of the burn (cetane rating) is fixed, so if you try and do what people do with petrol engines by pushing up the revs a bit to eek out more power, also won't work, because you run out of burn time. By the time the piston has made it to half way, you want all of the mix to have caught fire. Can't happen if the piston is moving faster. Think bicycle pedal- max push (gas pressure) when the crank is horizontal. (Direct injection petrol engines also have the same limitations- insufficient injection time at high RPMs)

    But one thing that really does make a big difference to an SDI is the gas flowing of the inlet manifold. Block off the 4 EGR injection ducts with some ali rod then die grind the whole thing smooth to keep the air laminar. I've posted "how to" pics a few years ago. The car now cruises a lot easier. People who have driven my SDIs after driving their stock versions always ask what on earth have I done to the engine. Gas flowing. That's all. Was fun with the bigger injectors in though. 

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