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    Fuel cell collector

    Hi, I haven't posted anything on here in a long time, but thought somebody here could help me out. I am building a fuel system for an endurance sports car. I have a sealed 0.6 gallon collector in the fuel cell with three 75gph pumps, capable of 95psi feeding it, through 3/8" hose. It then...
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    Rotary Seal Ideas

    You may want to look into some motorcycle suspension seals. There are some internal seals that are made for small aluminum shafts, that have to hold high pressure fluid on both sides. Although they aren't really designed for a rotary use, they are very cheap and easy to get. Might be worth a try.
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    Need some encouragement.

    Do you plan on working in the motocross industry?
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    Force on cam gear bolts

    I can probably obtain all that info, but how do I use it to get what I need?
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    Force on cam gear bolts

    The gear is on a centered dowel, then bolted to the cam. I am talking about sheer strength, not bolt torque. I want to figure out how much load is on the cam bolts from the crank via chain and valve spring back pressure. As I want to try some different bolts and bolts/patterns. I need the...
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    Force on cam gear bolts

    Hi, I'm trying to find some formulas to figure out the force on the bolts of a cam gear.
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    Books on engine building or modification

    Thanks Mender! I will look up the books by "blair", and start making a list of other ones to buy, based off your suggestions. A lot of people take for granted all the information there is theses days. But I know a little reading can go a long way and hope to take advantage of it.
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    Books on engine building or modification

    Thanks for your reply, I have "Four Stroke Performance tuning by A. Graham Bell", "Engine Air Flow", "Holley Carburator tuning", "The Racing Engine Builders Handbook", and "John B. Heywood's Fundamentals of the Internal Combustion Engine". I really like the Holley carb book, as it was easy to...
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    Books on engine building or modification

    I mostly work on off-road motorcycles for professional racers. I've been building slightly modified engines for a while, but I'm always wanting to learn. That's my main area of interest. Although I do have a 70 el camino and chevelle that I work on, both big block engines. I wouldn't mind...
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    Books on engine building or modification

    Hi, I'm looking for some good books on engine building or modification. Any suggestions or preferences would be appreciated.
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    Automotive Chevy cars won't start?

    I understand your idea of uneducated workers messing up the cars. But the uneducated ones are just busy workers, putting x part on over and over. The real problems come from bad design or mismanufactured parts. I really doubt these "not my job, lazy workers" are the reason for x brand of...
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    HP gains from colder air

    Thanks for your Ideas and info. I will experiment with a few of these Ideas. If any thing seems to work well I will get some Dyno runs and pics up on here.
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    HP gains from colder air

    If we did run a water/methanol injector. How much fluid do they normally consume?
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    HP gains from colder air

    I will talk to the next racing event dean and see if it's illegal or not. We already use an aftermarket aluminium tank to have enough fuel to make it through the race. With a good design it could be done, but the fuel tank area is pretty cramped.
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    HP gains from colder air

    The bike uses a throttle body with the injector built in. We can move the whole throttle body slightly, but because of rules we can't change the injector type.
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    HP gains from colder air

    Thanks for the links and the numbers. I think I am going to make fuel/air cooler, and give it a try. My plan is to have is to have a tank with a copper or aluminium coiled tube in it for fuel cooling. I would also run a line off the tank through a small pump to an air cooling device, such as...
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    HP gains from colder air

    I don't have access to one readily, but I could get to one.
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    HP gains from colder air

    Thanks, I appreciate the advice.
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    HP gains from colder air

    What do you mean by this? Will you please explain.
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    HP gains from colder air

    We are very serious, remapping the bike just for different tracks to account for more hills and or faster slower sections. And of course for the weather and engine mods.
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    HP gains from colder air

    The engine is heavily modified. -Cosworth 14.1-1 piston -Cosworth cnc porting -Beryllium valve guides and seats -7 angle Newen cut valve seats -one piece DLC coated titanium valves -Carrillo Con rod with balanced crank -ASF transmission process -custom cam and valve springs -custom exhaust...
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    HP gains from colder air

    Here is a link to the rule book, the engine rules start on page 22. http://www.amaproracing.com//assets/AMAPro-MX-2011-Rules.pdf We will be competing in the 250 class on a 4-stoke. The bike is fitted with EFI stock.
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    HP gains from colder air

    This cooling system is going to be on a racing motorcycle. It has cold air intake, the engine is highly modified, and weight has been shaved off every where. The bike has a 212lbs wet weight with roughly 50hp. If I could make a cooling system that weighed 5lbs and made 10% HP gains, the power...
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    HP gains from colder air

    Thanks for the insight Mech_Engineer. I see how this would be more of a refrigeration unit. Forced induction is illegal in my racing organization. I am trying to think of new ways to get more power within the rules.
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    HP gains from colder air

    I was thinking of running something colder through the cooler to cool the air. I've been looking at water, freon, alcohol cooled by dry ice, and liquid nitrogen. I am just exploring the idea and trying to learn if super cooled air would be beneficial enough to be explored further. Also, is...
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    HP gains from colder air

    I understand why intercoolers are usually used on turbo/super charged applications. Why couldn't you cool the air below ambient temperatures?
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    HP gains from colder air

    I'm trying to find out the HP percentage gains per degree of colder air. I'm thinking of implementing an intercooler on a naturally aspired race engine. I am trying to figure out if the power gains would be enough to out weigh the flow restrictions of an intercooler. Any rough numbers would...
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    Egg drop with two straws and 3 sheets of paper

    I had a similar project, but I had to use scotch tape. I made an open cylinder with the first two peices of paper. I used the straws in a x pattern to keep the papers cylinder shape. I cut the last peice of paper into strips and made braided rope out of it. I then secured the egg in the...
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    Con rod failure in motorbike

    Thanks, I've contacted carillo, but haven't pulled the trigger yet.
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    Con rod failure in motorbike

    It's a four stroke 4-valve single over head cam. Ignition is stock, but in motocross/supeross there are plenty of times when the wheel leaves the ground allowing max rpm. There are also times when you can't shift right before a jump, so you just have to wind it out (over rev) to still make the...
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