markku4444

Hey HSB Driver how did you remove the gasoline bladders do you have any pictures of that

BDARCHER

Used a center flanged exuast housing and a wedge tilt them in. Small blocks in 30 ft superboat only 7 ft beam. Have more info in watercooled turbo thread.

HSBdriver1

The 4 bladder were cut out of the boat from the floor board. The life of the bladders is about 10 yrs according to the company and just to replace one was well into three Thousand. The Fuel gage for the bladders was around $600. If you want pictures I"ll send them to your email account.

fubar260

a group of 4 active HSB's just rolled thru our local marina on Saturday. they stopped over and i went over to take a look yesterday. the crews were doing some rather involved maintenance at a rather rapid rate. those guys are connsumate professionals. it was very impressive. hearing what little noise they made when they fired was too. i couldnt quite get a good-enough look under the hatch though. all i could see was they were big, grey and looked natural.

at any rate, seeing them made me think of this thread. you HSB owners truely have some big boats in your posession. HSBDriver you gotta post some results here when you finally get'er runnnin.

markku4444

some pictures

HSBdriver1

Fubar260,
Is your marina on the east cost? Did you notice if the HSB's had back ramps? As of today the engines are not installed.
I'm sure my HSB will be louder because the sound proofing that was in the engine bay has been removed. The exhaust is still being ran out the bottom.

Michael1

You're giving up a lot of power in the exhaust system. The same rules apply to turbocharged engines as do naturally aspirated engines when it comes to flow losses. The log manifolds have a restrictive sharp elbow at the end, and the turbine outlet also has a very restrictive elbow. A good running turbo system will have the same pressure in the exhaust as it does the intake. Most turbo systems are poorly designed, and have much higher pressures in the exhaust as the intake. That means pumping losses during the exhaust stroke, poor chamber scavenging, and turbos which have to have restrictive turbine sections just to get the boost up. Turbocharging really is a balancing act, and that's why very few people succeed at it.

Also it gets difficult to get really good intercooler efficiency with a carbureted draw through system. If the intercooler is too big, fuel can drop out of suspension, ruining your mixture distribution. If it is too small, intercooler efficiency is low, and the intercooler presents a large intake restriction.

I guess you can try it out and see what it does. You'll have a lot of room for improvements that can be made later.

Michael

excalibur32

wouldn't the exhaust thru the bottom at an angle have a scavaging effect at speed, like a venturi?

turbo2256b

iTrader: (1)

might have been more for quiet at any speed stealth as you will