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I'm curious what's the rule of thumb for engine crankshaft angle to boat bottom. Do you drop the nose of the engine or raise it in relation to hull bottom.

So the 2 of you think it's royal purple. It wouldn't matter what i said the 2 of you have looked at the engine ( one of you spent twice to biuld a ford ) and you've decide that it was the oil. We had one of our bbc come appart and when we went into it we found out that like all drag car guys we...

The carb runs a separate curcuit for idle but all the air that runs through the carb and past the butterflies has gas from the main jets mixed with it. At slow speeds it isn't the same mixture so an inhancment from the mixture skrews is needed. Second it doesn't matter what the engine is in. If...

You got me there i wouldn't think the spring to be a problem. if it went 7 g on another engine.

thats a great intake as far as vacuum and torque are concrened. remember that vacuum also works your power valve and they are both interchangable. They power valve will work with part throttle and the accelerator pump for imediate acceleration. And an engine will pull vacumm acording to the load...

When the valve floats it's in the way of the piston even with mild cams. The piston touchs the valve and it's not dead on straight. The piston bends the valve and it woundnt close. The piston comes up again and brakes the vavle in 2. The loose piece ( the valve head ) now roams around the...

I think he's refering to the diapham getting a hole under rough environment conditions. If you find that the vacumm isnt opening it should be replaced. if it has never opened than you could replace with a different spring. single plane intakes don't produce alot of vacumm especially at higher...

The holley is the better choice just becuase of the ability to tune to specific engine , boat size, and environment. The original problem is needle and seat. I always kept extras and ran fuel pressure regulators that kept all that pressure from killing a needle and seat. The next problem is the...

royal purple was great when it came on the market and worked very well in turbo applications as the synthetic oil didn't break down as fast as potroleum based oils. When an engine was broke in they would put royal purple in it and get 15 more horse power at 600 hp level engines. I've had engine...

At 5000 rpm i would say the vavle springs did you in. The valve floated and the piston slapped it. The cast crank will work fine as long as you have main studs and good rod bolts. If the crank and rods and piston assemblies are balanced then the cast combo will run for years without Crank...

your aluminum radiator is too efficiant. if you have a electric fan on the radiator i would have it temp switch to com on when the radiator reaches a certain tempt like under heavy loads of lengthy work. Then as the gentleman with the idea of the block off plate with the whole in it said that is...

New so you gentaleman bear with me as i'm just relaying science that i found regarding diesel engines and air boats. Wiegh is the biggest concern. But with the torque levels a smaller diesel is always the way to go. A 4bt is the starting point. Whenyou start putting superchargers on big blocks...