maxc wrote:My new Summit 4010 hasn't boiled yet. My hoods not on.
I have t-slots on mine.
750VS Summit carb.Matt Gruber wrote:maxc wrote:My new Summit 4010 hasn't boiled yet. My hoods not on.
I have t-slots on mine.
that's the 750vs right? the larger venturi, 1.375", would have difficulty cruising around town without a T-slot. would have a flat spot until the booster engaged.
anybody have the summit 600vs? does it have a T-slot or a pin hole? This could be my choice, due to the quicker responding 1.25" venturi. (and my low cruise speed 40-45 mph around town)
Picking a street carb reminds me of picking a street cam. There are downsides to going with a larger size, even tho it costs about the same, bigger is not better on the street, if year 'round drivabilty and good mpg are important. I like being able to drive off on a cold start in winter (Florida) without waiting for it to warm up, for example.
sandman- thanks for your story!
Dodge Freak wrote:Why not just run a mechanical fan off the engine, it throw lot more air across the engine
Dodge Freak wrote:That seems pretty cool but why only a 10 min drive, after 10 mins you should had drove it hard for 10 - 15 more mins, that would have heated up everything more - like the trans
My carbs get too hot to touch on a 90 degree day after parking for 30 mins in the garage. Takes 5 to 10 seconds to fire it up, I start cranking and then open the gas a little and pretty soon if fires and I rev it high for few seconds. Sometimes it will idle rough but doesn't stall I take right off to cool things off
Sandman wrote:I had a problem with fuel boiling a few yrs back.
I had found the biggest problem with fuel boiling, was in the fuel line to the secondary. Or actually getting hot in the line, but not boiling because it was under pressure, then boiling when it went to the float bowl and was at atmospheric pressure. Kinda like pulling radiator cap off hot engine.
The secondaries are the biggest problem because there isn't fuel flowing to them all the time like the primary line.
To overcome it I made fittings to come out the other side of the bowl(on a centre hung holley bowl) and put a backpressure reg on the outlet line back to the tank.
I used a jet in the fittings so that more would flow past the rear jet than the front.
So then I had fuel continually returning to the tank.
Worked real well for me. Solved the boiling problems, plus car ran better and seemed to make a little more HP as well.