top speed 2

[collins1172]

I am having difficulty planing my boat. I have a 3.5 K&B. The boat is a top speed 2. At first i thought the fexshaft was coming in and out. But i dont think that anymore because as it cuts in the water starts flowing out of the head and as the engine cuts out the the water quits flowing. I noticed on a hard turn the boat stays running longer and also at lower speeds. But as it just starts to come over idle it cuts out. I have balance the model at 2 and 1/2 ounces on the front. Im strting to think i may need more weight. The manual states that you need 1 and 1/2 ounces to balance it but also states that when using k&b you will need to extend the engine out 3/4 of an inch. Which could cause why i am using more weight. Does anyone know whats going on with my boat? Brad
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My boat will not plane. I have a new 3.5 engine. It runs great however it seems to get air just as its about to plane. I have tried lowering the outboard no joy. Help please. Brad

[MECOA]

You really need to contact the boat maker. We can only help with the engine here.

What size/make prop are you using?

[collins1172]

prather 215

[MECOA]

You can try a Prather 220

But I would talk to the company that made the boat.

[winzracing]

Brad it sounds like the engine and trim need adjusting...Start off with a Neutruel trim and the prop shaft 1/8" above the bottom of the sponsons...Also put a x440 or x442 prop on there...Thats what i would check first before contacting the boat builders...What fuel you using??