I'd be concentrating on fixing the fuel smell in this race car. If you have a leak, your car will potentially become a fire ball on the side of the track.I race a 1750 with a 2.0 Nord conversion on Weber 40’s and love it. However the cab stinks of fuel after driving ....
Weber side droughts are individual to each cylinder too ... so can't see the advantage here, as good as motorcycle carbs are.A few of us have used motorcycle carburetors (which are individual to each cylinder) with a lot of success. Those can be cheaper than the fuel-injected alternative. I think Toyota 4AGE's also came with ITBs from the factory that you may be able to retrofit.
I got 48 ITB, and so much torque low down any granny can go shopping. even with the racing clutch.I spent around 2k on converting to EFI.
Emerald ECU. £700
Air temp, throttle pot, water temp, crank sensor. £75
Fuel swirl pot and high pressure pump plus new feed line and return regulator. £125
Wasted spark coil pack. £30
eBay throttle bodies £350
Trigger wheel £12 plus machining £ 30
Wire and relays
I also added a zetronix O2 sensor and digital display, the ability to datalog by rpm was very helpful in getting a base map sorted.
Trigger wheel.com and emerald have most of what you need, eBay the rest
Webber's don't make more power how can they? Big mistake is to over size the throttle bodies which looses torque remember 45 Webber's probably have 36 Venturi so a 40 throttle body has more open area, yet everyone goes for 45 TB this slows the air velocity reducing cylinder fill at the bottom of the piston stroke
It's fairly popular with EU/UK folks for Ford (Escort) applications and Lotus 7 kit cars (DanST engineering makes manifolds and conversion kits.) VW folks in the USA use big YZF-R1 CV carbs in caddies and rabbits, and Japan peeps go wild with Keihin FCRs in N1 AE86s.Gotcha. I'm famiar, via this board, with using motorcycle throttle bodies for aftermarket EFI conversions, had not heard of people actually running motorcycle carbs on auto engines. Cool.
Webers share a bowl but have separate floats so... You're right. There isn't that much difference save for different throttle valve shapes and a more modern design. CV carbs should have an advantage in metering under load, and a select few bike carbs are flat slides which is an (arguably) better throttle valve design.Weber side droughts are individual to each cylinder too ... so can't see the advantage here, as good as motorcycle carbs are.
They share a fuel bowl, that is all. Effectively 4 carb's on our 105 series Alfas.I'm not super familiar with Webers, but I thought each couple shared a bowl and some of the fuel circuit? Could be wrong...
I'll be the first to comment since I am the one lunatic idiot with bike carbs in his cut up Spider (I clearly don't care about my reputation.)Bearing in mind Alfaholics promise more than 220bhp for in excess of £30k spend.
Not mine, someone shared it on a 105 Facebook group a couple of weeks ago.