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6-port with carb... what happens to 5/6 prts
I'm a little confuseda bout this... if you were to use, say a Racing Beat holley set up with a manifold for the 6 port, that would be the same as having the ports open all the time right? and isnt that "bad"?
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Yea it would be the same. Its only bad for low end torque, making starts from stops more difficult so to say. Top end will be ever so slightly better becuase the port actuator arms are no longer creating turbulance in the intake. Thats still very much debatable tho.
There are some weber setups that bolt onto the stock lower intake manifold that allow you to keep the 5/6th ports functioning off of exhaust back pressure. Keep in mind, carb conversions are hardly easy, you don't just bolt it on and go. You have to realize the following components have to be changed for a carb setup like the fuel pump and the ignition system. If you search there are alot of cool carb posts that talk about the whole schpeal. There are even a few turbo carb setups in the first gen section. |
I've got the ignition and fuel delivery covered. Got a fuel pump and regulator, got a distributor and coils on the way. As far as the back pressure, I've got an s5 and if I understand right, they work off the air pump, which is something I wanted to ditch anyway, maybe go with the rpm switch mod. so the most "streetable" method of carb would be to keep the lower intake manifold with the port actuators and just get a dellorto/weber style upper intake manifold?
Originally Posted by BlaCkPlaGUE
Yea it would be the same. Its only bad for low end torque, making starts from stops more difficult so to say. Top end will be ever so slightly better becuase the port actuator arms are no longer creating turbulance in the intake. Thats still very much debatable tho.
There are some weber setups that bolt onto the stock lower intake manifold that allow you to keep the 5/6th ports functioning off of exhaust back pressure. Keep in mind, carb conversions are hardly easy, you don't just bolt it on and go. You have to realize the following components have to be changed for a carb setup like the fuel pump and the ignition system. If you search there are alot of cool carb posts that talk about the whole schpeal. There are even a few turbo carb setups in the first gen section. |
wait...do you have the stock LIM or do you have aftermarket one for a carb?
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i had a weber on my old 6-port n/a, and it was a *LIL* harder to get the car moving, but once it got about 3k it took off pretty well. I had the setup with the 5/6ports open all the time. But if you go with a holley it has prim and sec buterflys, so it shouldnt lose as much torque as the weber, and therefroe yould be pretty streetable.
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its a 90 n/a
right now EVERYTHING is stock I've got a holley blue pump and regulator on the shelf, and a 1st gen style distributor on the way i havent got my intake or carb yet |
Originally Posted by 88t2romad
i had a weber on my old 6-port n/a, and it was a *LIL* harder to get the car moving, but once it got about 3k it took off pretty well. I had the setup with the 5/6ports open all the time. But if you go with a holley it has prim and sec buterflys, so it shouldnt lose as much torque as the weber, and therefroe yould be pretty streetable.
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