I could imagine that as sounds rational. But he specifically mentions needle wear and over fuelling in relation to this shift in float height - so a mystery from way out westie
W O Westie also recommends 165 main jets in ICT’s for 2.0 which most find very rich. I suppose a lower fuel level in the float bowl might counter that a bit.
Only if loweering the float lowers the level in the bowl. Perhaps its to compensate for rubbish valves and you need 8mm to get it to shut at the correct level now? Anyway dells are much better.. I'm off now
I don't think he actually really understands. He knows to change the emulsion from supplied F78 to F9 or F3 for instance but freely admits he read that somewhere, tried it and it was a revelation.. but he does not IMO know why, he has hands on experience but not the understanding to go with it... which is ok until you unwittingly change the main jet mixture by changing the fuel height in the emulsion tube not understanding the knock on effect on the mixture, then demanding that all his customers get this mod... which may or may not be good in the long run. If he has weakened the mixture at revs that is a bad thing because that is where/when you might burn a piston but as Gooders commented ^, his mixtures are all on the rich side so in fact the knock on effect might make your bus run better! Anyhow - Dubs reckons it doesn't work anyway so...
Not knocking W O Westy I think he has helped many owners keep their busses on the road. A lot of owners probably haven’t got a clue about tuning a carburettor or even the basics of float height etc. But for those who are in the know it is common knowledge that one setting doesn’t fit all.
Not so much knocking as pointing out it's maybe best not to believe everything verbatim that ANYONE says. I mean, I went to a very well known and long established VW workshop in Manchester for a blast on his rolling road to check I wasn't going to blow up and he didn't know how vacuum advance works, what it's for or how it behaves generally. His experience told him that it was a "bad thing" that should be unplugged. Nobody knows everything, least of all everything about carbs and that's particularly true of "do everything" type workshops.
Now I think about it, my old 1500 sp had ancient ICTS on it, and didnt suffer from leaking valves jets.. that was with a boggo pump, and a crappy empi regulator. That was running on E5. I would have set them up at 6mm I would imagine, as that was before I read about the 8mm thing. I reckon its Marmite quality new jets
Two things about lowering fuel level are. 1. It reduces the effective size of jets as there has to be more vacuum to lift the fuel the extra distance. 2. When the needle valve doesnt seat properly there is more space for fuel to rise and push the float up and seat the valve before it overflows. If you lap the needle valve into the seat you are wearing a shoulder onto the needle which is basically what a worn needle looks like. It probably needs an angle grind on the seat and then a totally new valve for best effect. In the past I expect people drove their less old VWs more so this leaking caused less of a problem.
Or just throw in the towel and fit something else! It's a pity though, they are fine little carbs that like most carbs perform well when set up well. The only odd thing about them is they do not adhere to common jet sizing philosophy which alone makes them difficult to deal with rationally.
that's where i'm at with them - having invested in the AFR gauge and re-jetted 6 (?) times now i think they are likely as good as they are going to get. I'm going to treat the next few trips out as decision time - either stick with them or throw them over snotty's fence and buy something else.
To be honest, the initial outlay for Dells may be a bit spendy, but by the time you have *****ed about with cut of solenoids, malapassi’s , needle jets etc, it’s not that much more than Bedford van carbs. And they are so much more tune able, and don’t need a balance pipe in the way of the spark plugs.. Sorry, this isn’t helping is it To the op, ask eurocarb if they can get viton tipped needles for icts. If it’s a no, then fit a solenoid.
