Hoping you could help me with a question i have? i have 79 scropion whip 440 with a cuyuna engine sled was given to me and i am trying to get it running. it had a hole in the piston. A friend replaced the pistons and (seals we believe). We cant get a strong pulse from engine to fuel pump, the fuel wont pump all the way up to the carb, tried a different fuel pump and same result, another friend said maybe the center seal on crank may be out. When u said the cuyuna eats pistons and blows seals are you talking about a center seal on crank? or is it oil seals elsewhere? my friend who did engine work said he definatly did not do anything with center seal because he would have had to send crank out and couldnt remember if there was an actual seal or if it was machined into the crankcase (he did this work a couple of years ago). He said whatever the seal was if he thought it was bad he wouldnt have put the engine back together he doesnt think the fuel pump issue is related to center seal on crank. when you blew seals out did you have similar problems getting fuel all the way to the carb? the sled runs if you put fuel into cylinders but it wont pump the fuel. Did you experience any of these difficulties? Thanks for any help or advice you give us
note: we changed fuel pickup and filter inside the fuel tank, no difference