Weber jets

[Bulldog Bri]

I've got a weber 34 ICH on a 1100 crossflow engine in my Locost. From what I can tell/see I've got a 175 jet in there, is this too big? The carb was given to me as the original Motorcraft one was nackered . I've been looking on the Locost builders site but not found any info there
The problem is the car will run and idle fine even accelerate if done slowly but go a bit to quick and it just dies think it's over fueling.

Thoughts please

[benchmark51]

This is a very widely used carb and is what I have on my 1300 xflow.
The only real problem I had was fuel starvation, which turned out to be the in-line
filter near the tank and bits of s*** in the fuel bowl.
below link should help

http://www.redlineweber.com/html/Tech/34_ICT_tunning.htm

http://www.dellorto.co.uk/merchandise/products_details.asp?PartNo=73801&CategoryID=3&PartsectionID=99

[Iancider]

I agree with Dave - it sounds more like fuel starvation than wrong jetting.  It could also be a gross air-leak on the manifold side - for instance the vacuum distributor advance tube left off, leaving an open vent or air-leaks around the inlet manifold/gasket - the bigger the throttle opening, the bigger the vacuum and the more air leaks-in to weaken the mixture.  Also check the gasket under the carb. 

Good luck
Ian