Ive been wanting to procharge my chevelle for a while and ive done a little research on blowthrough carbs. Only question I have is. How is the driveability and reliability of this type of setup. I drive my car mostly on the street where I am at less than half throttle and don't accelerate very hard. I have read with blowthrough carbs you have to put farely large jets to keep them from running lean under boost and that this causes it to run extremely rich at part throttle and low boost. Is this true. Ive already lost one engine due to washed out rings and fuel in the oil from running it too rich. Can anyone shed some light on this. Thank you.
i just had a crazy thought...with the self tuning throttle body fuel injection thats now available... why not talk to the manufacturers of that..see if they have attempted a blow thru version with either a MAP sensor from a turbo charged application.. so it handles both positive and negative pressures.. similar features are available in fuel pressure regulators.. will it all work with the procharger???for another forum here.. i came up with a bolt on device for allowing the procharger to overrun while shifting...without needing a special damper or very much in mods if any to the crank sprocket what do you think??
Ive thought of the bolt on throttle body's but everyone ive talked to that has owned one. Did not like them. They are a great idea and theoretically would work great but on the vehicle they just don't perform. That's what ive been told. And ive thought of a multiport injection setup as well but I don't like the look of wire running all over the engine to various sensors and injectors. Also heard that the fuel being introduced to the air before the intake such as with a carb or with a throttle body. The fuel acts like an intercooler and cools the air charge before it enters the combustion chamber and with fuel injection there's not enough time for the fuel to cool the air charge. So that's why I don't want to go with Multiport injection.
thats interesting... the current issue of chevy high performance has a 66 nova on the cover with exhaust zoomies out the front fenders... yep.. burn the paint right off the door if you open the doors... but who cares about that.. its a 4 page article of a procharger on a port fuel injected motor.. with a few mods that put it into the ... well.. read the article.. its a dark green car.. i have not picked up the issue.. but i followed the complete build on another forum ..
thats interesting on the fuel sprayed into the intake port not having enough time to cool the incoming air charge...hmm.. i will have to think about that.. shame i don't have an instrumented dyne or access to one to drill some holes in the intake and ports to introduce some thermometers into the air stream...you might want to post your questions over at the chevyhiperformance forums.. there is a lot more people there currently for some reason.. passwords and user names are the same.. as its all on this server..there is also gmhightechperformance forums also on this site... i don't visit there often as the members there really have their forum answers covered..