Cooling the fuel... Reply #30 – August 02, 2006, 08:13:28 PM I run an 83 'Bird using a 89 5.0L H.O., with a 4bbl manifold and a 600 Holley Vacuum Secondary carb. Back to back runs at a drag strip (trap tickets) show a delta of .150 seconds between 85 degree vrs 100 degree weather conditions. The launch and tire spin have more effect on performance, than cold fuel. Can't hurt but no big speed secret. The density altitude we run at is like 6000' elevation, but low humidity. You would gain more performance from distributor mods than a cool can. I won't go into a gear change due to the fact I don't drive on the street, let it be said, a cam and gear change would be something you could feel in the seat of the pants. Remember there is a fine line between streetability and raw horsepower, step over and it isn't fun anymore. If your still running a 2150 carb, go to a Holley #4412 2bbl. You would be amazed how hard it will pull. Gas milage will suffer, but it's a poor mans 4bbl substitute. Good luck, Fred Quote Selected
Cooling the fuel... Reply #31 – August 02, 2006, 08:13:35 PM Fill the tank into the filler neck with cool under ground gas. Park the car in the hot sun. You have gas running out onto the ground. Cool gas takes up less space. Does this mean it's denser?The intake fuel/air mixture is cooled by the evaporating gas. Quote Selected
Cooling the fuel... Reply #32 – August 02, 2006, 10:00:57 PM Thanks for the tip on the carburetor. But I know how I can get more power if I spend the money. I was just looking at fuel cooling as a cheap day thing. In any case I don't have the cash for another tranny cooler this weekend so I may just settle for insulating the fuel line. Here's a question though, I have a can of high temperature paint that I was going to use on some headers. If I put a few coats on my air cleaner would it lower the intake air temp at all? Quote Selected
Cooling the fuel... Reply #33 – August 02, 2006, 10:41:44 PM Quote from: sum_weirdoHere's a question though, I have a can of high temperature paint that I was going to use on some headers. If I put a few coats on my air cleaner would it lower the intake air temp at all?NO.There's a guy on 4-eyed Pride with a dual snorkel air cleaner set-up for sale....of course be leaves no email, but here's his POSTPM him or something....Maybe insulate your hose from the fender to the air cleaner if you must....but seriously.... Quote Selected
Cooling the fuel... Reply #34 – August 03, 2006, 04:27:56 AM first off, if you wanted to cool the fuel lines to any degree, get rid of the rubber. Rubber is an insilator, so it will keep hot or cold air from getting in. If the fuel is hot, and the hose is cool, it will make the rubber crack faster.You would need to get at least metal gas lines before you could even really make it cold to any degree. That cost alot. So save up some money and throw on a new carb, cam, or what ever.Unless you want to throw in alot money to do new fuel lines at least. Quote Selected
Cooling the fuel... Reply #35 – August 03, 2006, 06:34:03 AM I'll have to agree that cooling the fuel will do very little for you and will be a lot of work. After filling up my motorcycle (it's carbed) the gas is very cool right out of the pump. I notice a slight improvement in performance for a couple miles after the filling station. Now with a much better power/weight ratio than most cars, you would think that the colder fuel would make a bigger difference on the smaller scale. This is not the case. Although there is an improvement, it is so slight that it probably will not be worth the time you will invest. Make sure that your butt-dyno is calibrated beforehand lol. If you want the power to be there, your mind will tell you that it is. Quote Selected
Cooling the fuel... Reply #36 – August 03, 2006, 09:06:38 AM :raspberry What's so expensive about metal fuel lines? All you have to do is buy a length and bend it up, flare the ends and put on the proper fittings. Could probably do the whole car for 20 bucks... Quote Selected
Cooling the fuel... Reply #37 – August 03, 2006, 09:39:56 AM Quote from: sum_weirdo:raspberry What's so expensive about metal fuel lines? All you have to do is buy a length and bend it up, flare the ends and put on the proper fittings. Could probably do the whole car for 20 bucks...Sure, but what's your time worth to you? Quote Selected
Cooling the fuel... Reply #38 – August 03, 2006, 10:02:53 AM QuoteAfter filling up my motorcycle (it's carbed) the gas is very cool right out of the pump. I notice a slight improvement in performance for a couple miles after the filling station.The rest of the engine would have cooled down too, unless you keep the engine running while filling. That would simulate the old "ice bag on the intake manifold" racers used between runs. Quote Selected
Cooling the fuel... Reply #39 – August 03, 2006, 10:16:11 AM Meh. It's not even worth arguing about no more. We should be friends united by love of engine grease :D I'm probably going to leave experimenting with this for a while and do my shocks instead. And an opportunity for possible fast cash just came up so I may just be able to get the new manifold and carb I've been wanting. I'm thinking a 570 CFM Holley Street Avenger Quote Selected
Cooling the fuel... Reply #40 – August 03, 2006, 02:54:56 PM Quote from: MasterBlasterThe rest of the engine would have cooled down too, unless you keep the engine running while filling. That would simulate the old "ice bag on the intake manifold" racers used between runs.The engine cool down isn't that significant. It's off for maybe two minutes, as long as it takes to pump a couple of gallons. I always pay at the pump and rarely get off the bike while filling... Quote Selected
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