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I've seen these V-6 loopers idle at 2000, and then drop down to a 600 idle in the water. Back pressure is VERY crucial on a looper. Loopers flow more efficiently up high, and tend to produce more high rpm HP, whereas cross-flows pull extremely good down low. This is why many people were dissapointed with loopers when they first came out. There boats would rocket on plane with the C.F. engine but fall off up high, the loopers would struggle to get on plane but once they got on top would fly up high. This is why most small HP engines are C.F.'s. Don't pass judgement on the engine until you get it in the water.
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So far the guy I got the motor from has been honset all the way!
He said he had it tuned in the begin of the summer, and all eletric, staor, starter, coils, cdi's were change in the last year!
the only thing is he said that all compression was 112 to 115, and I got 97 to 100 but that just might mean the gauges read different?? But they are all good numbers.
I will do nothing till I get it in the water and see what happens!!