Spoke to Eurocarb about jetting and they recommend I go up a couple of sizes on the idle jets. Mine are 50's and they think that it would run better on 55's as Alfa allegedly jetted them "lean" to get the car through the emission tests during type approval New jets arrived today so watch this space
yep they told me the same. In fact up to 60.
55's original dellortos I believe are not actually .55mm. (i heard they are actually a smaller size when measured)
I have 52 originals that don't work at all on my alfa.
I bought 53's and 55's from ebay in Italy (alfa something).
If these are actually the real sizes then the 53's work just fine.
55's were too rich, black tailpipe and black plugs.
The difference between the original dellorto 52's and 53's bought on ebay were NIGHT and DAY. Huge difference.
52's spluttered and wouldn't move.
53's nice and smooth.
More like a .05mm increase between these 52's and 53's.
can anyone confirm? who has a measuring device?