Hi I have been working on this for a few days and thought I should share it as I was quite pleased with the result. The problem was that I was never completely happy with the linkage of the progressive carb although I found it a brilliant carb for a mild performance advantage and better starting, choke and driving than the stock carb (that is if you can get a good reproduction stock carb now....?) I have been running ICTs for a while but like a change hence returning to the progressive. The problem with the progressive carb for the 1600 engine is that the linkage is at too much of an angle and does not allow full throttle of both the carb barrels without some modification to extend the amount of throttle cable travel, even with the EMPI linkage kit The easiest way to get more travel is to extend the linkage lever at the front pedal end and is a useful thing to do for most aftermarket carbs including twin carbs to get full throttle. With the 32/36 though you need loads of travel and to find a way to lower the linkage at the carb end to get a better smoother action. I have seen a few ideas on the net but they appear to be a bit ropey, some involved a pulley and others were plain awful. I started with the pulley idea and made a bracket with some brass rollers to lower the cable to the right level...... But then decided this was not very elegant and I could do better. I had seen a different (expensive) manifold on the net for a Porche 356 with a lower pivot and lever and decided to try and replicate a similar idea. Therefore I made a bracket to bolt to the manifold and a lever to lower the cable. The photo below shows an adjustable balljoint linkage (salvaged and shortened from an old EMPI crossbar kit - the balljoint parts are readily available from Eurocarb though) but a bit of mild steel bar would be just as good. So this works really well with just 2cm needed of throttle cable travel to get full opening of both barrels, the cable is pulled at a straight angle and is at the right height for the cable through the fan housing. I think you would get full travel without even extending the linkage at the pedal end. I welded the parts which are all made from 2mm mild steel bar but you could easily make this and bolt it together without the need of a welder. It looks better now it is painted by the way! Cheers Ben
I also needed to reduce the size of the fuel union as it was 8mm I think and way too tight for nornal 6mm van hose and I was always worried about it leaking fromn being too stretched so I bought a reducer off ebay for a couple of quid only from 8mm to 6mm. Cheers Ben
very good modification there - we struggled with outs, its not brilliant but it worked to get us running & moving about the yard!
somewhere along the way, the suppliers stopped getting the correct linkage with the weber 32/36... My first bug had one, and there was a proper linkage on it... none of this faff with having to fab up adaptors n stuff...
Cheers Paul, it's strange isn't it as they are good carbs. This was an easy modification though and looks a bit mo professional now in paint! I didn't fancy pulling out the fuel union in the end hence the reducer approach! Ben
I splashed out on this....... http://www.ebay.ie/itm/VW-AIR-COOLE...WEBER-32-36-DFEV-/360334650438#ht_2369wt_1271 Has the modification built in...... Also has preheat castings that go all the way to the carb........ One draw back is you'll probably need a electric fuel pump as the casting is wider..........
That looks the business! However most come with the Empi manifold which I already had hence the need to make bits! Hmmm if I had £150 though......
