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Re: [T3] FI for Carbs


My squareback has the Weber 34 ICT carbs. They work fine but had the car 
come with fuel injection I would have kept it. You should know that 
installing the carbs is not a bolt on and drive project. I have seen these 
carbs brand new with warious different jet sizes. It will be up to you to 
figure out wich jet sizes work best on your engine. This can involve lots of 
tinkering and without a dyno and exhaust analyser it will probably never be 
perfect. The fuel injection on the other hand is self calibrating. The 
computer constantly monitors conditions and supplies the correct amount of 
well atomized fuel for performance and economy. My car does not have more 
power than fuel injected type 3's that I've driven and the gas milage is not 
as good(though still good). The carbs don't work well while the engine is 
cold. On a cold morning you may have pump the throttle and then hold it down 
for a couple of minutes before the car will idle. The car is also hard to 
drive before the engine warms up. Fuel injection is not a fire hazard as 
long as the hoses are in good shape. All modern cars are fuel injected. You 
must also calibrate the carbs so ad the price of a syncronizer to the carb 
budget. If you decide to go with the carbs I suggest that you get them from 
a supplier that offers technical assistance and can provide replacement jets 
and parts. You should also get the hex bar linkage as it is superior. If the 
kit comes with a plastic fuel line tee, replace it with a metal one. Some 
disadvantages of fuel injection are difficulty finding a local mechanic that 
understands it, a certain learing curve involved in working on it yourself, 
difficulty finding parts if you break down away from home and the fact that 
the parts and wiring are 30+ years old.

Whatever you do good luck and have fun.

Josh Brooks
 

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