Your new list seems just correct to me, for example:
- Stock heads and C25 won't make good power over 5000 rpm so reduction in aux.vent size doesn't hurt max power. But it improves low end and tuneability.
- Emulsion tube ".2" is the most usual one and works well in most VW aircooled engines. Aircooled.net recommends .1 -emulsion tube for center carb application, so it probably fattens low and leans high rpm's.
- You may need 130-135 mains but the engine should work well with 125's.
- Same goes to idles, but with smaller decrease/increase - maybe 52's or 57's. But the odds are that 55's are just fine
I would also highly recommend bakelite's or CSP's "pertinax" heat insulation between carbs and manifolds. With hot engine, re-starting may be tricky with hot fuel.
http://www.csp-shop.com/cgi-bin/cshop2/front/shop_main.cgi?func=det&rub1=Products&rub2=Engine%2CCarburators&artnr=14457b&pn=0&sort=0&all=Your previous jettings sound like Alfa 1500. About only useable in your list will be the aux.vents. So if it won't operate properly, you can try if the jetting's too rich or lean by switching to those 32 vents. My favorite "real life jet hack" is adding e85 ethanol fuel to lean out - my scooter's running on 50/50 e85/95e because I'm too lazy to change smaller jet in that piece of s**t
Puavo / DWL
The Cal-look Lounge
Author
