Originally Posted by MILD THUNDER (Post 4483802)

According to the widebands, the fuel mixture was pretty consistent on the dyno. The airflow turbines didn't seem to be showing anything weird. Both engines were showing the same story.

I'd like to say it was the camshaft. But, there certainly can be something else going on. Unfortunately, there just wasn't alot of time there on the dyno, to really play with things. Tim pretty much had 1 day to dyno 2 engines, and head back to ohio. The dyno numbers, seemed to pretty much show, what he was, or wasn't seeing, in the boats performance.

Originally Posted by Black Baja (Post 4483812)

Motor is still trying to go but can't. Usually means there is a restriction. When you do a pull and it drops of fast it means the motor is done.

Originally Posted by donzi matt (Post 4483814)

20/20 hindsight, taking the SM exhaust off and throwing dyno headers on would have been enlightening, and could have quantified what the exhaust is costing him power wise.

Originally Posted by ICDEDPPL (Post 4483811)

Blower motors.. you wanna go faster tomorrow just swap some pulleys, add a little jet ... boostane if you wanna get crazy or run some granny pulleys for everyday reliability.


http://www.birdsonggregory.com/wordp...ing_agency.jpg

Originally Posted by Full Force (Post 4483817)

Ryan figured 30 hp for exhaust and sea pump, alternator... I don't have PS pump.

Originally Posted by Full Force (Post 4483817)

Ryan figured 30 hp for exhaust and sea pump, alternator... I don't have PS pump.

Originally Posted by donzi matt (Post 4483819)

I know, but one of your what ifs is if your exhaust is holding you back. Dyno headers might have quantified that. Did you guys happen to log vacuum on the dyno? That would tell you if your carbs are holding you back.

Originally Posted by MILD THUNDER (Post 4483820)

We gotta stop "figuring" at some point. Ryans a buddy, but my first dyno pull, my engines made 650hp. I vomitted in my mouth a little bit. I insisted something was wrong. He was like "eh, my dyno's conservative, and its a 468" . I asked him to open the throttle all the way on the dyno console. Oops, throttle was only opening about 60%. Next pull, 761hp .