Ok i have a 2180 that i built about 1 1/2 years ago it has not bin started in 6 mouths or so due to problems that i was having wit the starter. well i finely went and got a high torque starter and it fired up. now when i get on it . it just falls on its face around 2500 rpm and i am not really sure why

First thing to check is the fuel, Ethanol causes fuel lines to fail, accelerator pumps to crack and it can also gel in the fuel bowl and clog passages. Once you check those items I would put in a fresh filter and either flush the system or add some fuel conditioner.

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Water Cooled Consortium, Chairman of the Build (Former AC purist)

I agree with the Barron.I was just thinking of an old motor I had back in '02. I had to get a diesel starter to crank it. This motor struggled to rev past 3k rpm.As I removed the motor I found that the bellhousing had been ate away on the right side by the flywheel teeth.Come to find out it had been line-borred very crooked and the motor was in a constant bind. I always assumed the motor was tight because the motor had great compression and the bearrings just needed breaking in.I was very ill about the guy knowing he had messed up the borring BUT he was 70 years old.DO NOT let Jim Connel do yall's. I love him but he is too old. Looking back,the crank spun over fine when I built the block.But install the cylinders and it gets tight!I love my heavy w/c.Pull the plugs and turn it by hand tho see how tight it is.

i use ave gas 102 octane it has additives in the fuel to keep it from doing all the things listed if that where to happen in a plane it would crash and planes sometimes sit for mounts with no use. as for the motor being hard to crank that is because of the compression 12.5 to 1.

Distributor advance.Maybe the weights down below in your centrifigal distributor rusted while sitting and need oiling.MSD ignition? A friend of mine had moisture in his MSD box and caused some problems.He said he has the street type not the sealed off road type.Look at your spark plug wires at nite for arcs sparks and halos.Pull on your spark plug end caps to make sure they have a good connection.Just guesses.See if your fuel pump fills a drinking glass pretty quick.(a dry rotted fuel pump diaphram if mech).

the buggy has always bin stored in doors im starting to think it is the carbs i might teat them down and see what is going on i have to have this beast up and running good for bubba fest. is any one out there any good with carbs that lives near Burlington ky.

If you are running Aviation fuel it contains methanol alcohol and has some of the same effects as ethanol only it doesn't eat rubber like ethanol but it dries it out causing seals to crack and in some cases shrink o-rings. AV GAS can be run so long as a good top oil is added to the fuel such as Marvel Mystery oil. It is alcohol in any fuel that does the damage to rubber parts (Aircraft use a different type of seal made of Viton rubber that is not affected by alcohol) Been there done that have a drawer full of t-shirts. lastly, I would inspect the accelerator pump diaphragm first. You may find the spring with corrosion as accelerator pumps on webber, solex, and dells collect water or moisture.

When I ran AC I use to crack the screws loose following the last ride of the season and bleed the fuel off the fuel and any accumulated water or sediment after running the float bowls as dry as possible. The same procedure should be used any time you get caught in the rain even if you have covers.

You may also check the distributor springs and weights to make sure it is advancing properly.

That is the the reason I run fuel injection. No carburetors, distributor-less ignition is nice too. I am just drawing on my experiences and it maybe something else.

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Water Cooled Consortium, Chairman of the Build (Former AC purist)

Ive been running AV gas for years and never put a lube in it. My old motor was 6 years old, ran on AV gas the whole time. When I tore it down because of an end play issue, it looked like brand new all through the motor. Maybe just lucky.

The top oil is only to protect the fuels system and provide lubricant for carb seals and valves as AV gas has no detergent like pump gas. I merely made the comments for the basis of knowledge. You can do your own research. I had issues when I ran AV gas with dells. Again All this is just my experience with the problem you have described. Much the same as you should get a second opinion from a doc. I suggest looking at the other post as I pointed out.

Just try to eliminate the in-expense causes first rather than throw good money after bad.

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Water Cooled Consortium, Chairman of the Build (Former AC purist)