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motor advice

stclairriverblaster said:
the boat will be trailerd to the lake.. ran for a few hours and returned home and tank will be basically empty.. no excess fuel sitting around soaking up water..
Click to expand...

While this quite possibly may be the best way to avoid water in the fuel system... I have also heard quite the opposite. Many mechanics and family members that have been in boating a very long time advise to keep the tank full at all times. This way there is not much space for humid air to get in, condensate, and fall into the fuel. If the tank is full of fuel, there is minimal airspace for this condensation to take place. This, i have heard is more important on aluminum tanks vs plastic.

PS- i agree with the others-stay away from the alcohol for the marine application-marine technology just isnt here for it yet. Heck, we havent even had EFI very long, compared to the auto industry. Once again, the auto industry should not be compared with marine. Whether that is theory, or components, tolerances--w/e. However you decided to power your boat, good luck.
 
cturboaddict said:
Thats in auto form....
Now lets put it in boat form....
http://www.youtube.com/watch?v=6XNK4UDJ3rY&feature=player_detailpage
vs
http://www.youtube.com/watch?feature=player_detailpage&v=mIJ9c347Vs0
:sssh::sssh::sssh:
Click to expand...

Just seen the video that was a blast from the past
Score-101010.gif
 
Merry Christmas All

YOU HAVE TO PAY TO PLAY no skimping on motor building, cost more in the long run and you will be watching everyone else from shore. If you start with junk you will end with junk. Yes you can get a 4 banger to produce as much Hp as BBC but not the same you need the grunt to deliver more smooth power band smaller cubes need to rev higher to deliver same. like putting pedal to floor in your car and dropping it into drive. doesnt last long. Auto and marines dfferent animals you dont have rolling resistance in a boat you have a lot of drag all the time. Put big tires on your truck still have same HP but truck works harder to roll it. You need grunt not HP i have a 67 327 pushing 650 horse pull the tires of my 67 camaro off the ground with 4:88 gears but also has been torn down few times since it not as reliable as bigger motor that works easier to deliver same hp any smaller motor will have to turn twice as fast to get same power out of it as BBC. You may get alot of punch off the line but run out of steam early on. I have been in the speed scene for 25yrs bikes, cars, sleds, 4 wheelers, you name it. you have gotten alot of good info from some of these guys plus they been doing it longer than you. JUST REMEMEBER :thumb: NO REPLACEMENT FOR DISPLACEMENT :cheers: just my 2cw
 
well ive decided that the 454 is getting built.
cam is staying what i have now..
same headers.
same heads.
eagle rods.
same forged crank that was in it.
same carb same intake
its getting 14:1 and it is getting ran on E85. ive gotten a lot of hands on experience with it and there is NO reason not to go with it.* dont give a **** what you guys say. i have experience with it now in v8s and my lil 4 bangers. which my buddys street car dynoed 1095 awhp @6800 rpm*
if you wanna continue to be ignorant about it. your loss but there is A LOT to be gained on it.

the block will be machined to tighter than marine tolerances. and it will be ran around 210-230 degrees. water temp.

i appreciate all the honest constructive thoughts. and i am really hoping to see some of you guys next year during the checkmate run!
 
E85 is great stuff. Lots of guys in the turbo Mustang and turbo import communities are making near race gas power numbers without spending $10 or more per gallon for race gas. I would say that as long as the boat is stored out of the water you shouldn't have much problem with absorption. Are you going to come up with a way to seal off the fuel tank vent or something so that moisture doesn't get in? Maybe a second vent with check valve that will allow built up pressure out but nothing in? Then you could put a valve on the regular vent which you can open to allow air in while you're running. I wish it was more readily available around here, only one or two stations within 30 miles and even less as you get towards NYC. I'd have loved to try it when I had my turbo Mitsubishi.

John
 
atc250r said:
E85 is great stuff. Lots of guys in the turbo Mustang and turbo import communities are making near race gas power numbers without spending $10 or more per gallon for race gas. I would say that as long as the boat is stored out of the water you shouldn't have much problem with absorption. Are you going to come up with a way to seal off the fuel tank vent or something so that moisture doesn't get in? Maybe a second vent with check valve that will allow built up pressure out but nothing in? Then you could put a valve on the regular vent which you can open to allow air in while you're running. I wish it was more readily available around here, only one or two stations within 30 miles and even less as you get towards NYC. I'd have loved to try it when I had my turbo Mitsubishi.

John
Click to expand...

the boat is not gonna remain in the water it will be towed. at the end of the day the remainer can go in my daily driver!
 
ezstriper said:
the pin has been removed....
Click to expand...

why has the pin been removed? the closed cooling? the e85?
closed cooling just allows a much more stable enviroment than raw water setups everything will be expanded with each other and everything will be happy. if clearances are right. :thumb:

once everything is up to temp not only will it make more power but it will last longer too..

this guy is doing big things with e85..
http://forum.jetboatperformance.biz/index.php/topic,573.0.html
e85
http://www.youtube.com/watch?v=vzNequAEOrs
e85
http://www.youtube.com/watch?v=cApuey9Qlmo
http://www.youtube.com/watch?v=e--9X02xkPs&feature=related
e85
http://www.youtube.com/watch?v=yWNqNtNEcvc&feature=related
 
I think EZ meant the pin was removed for another great thread to blow up with good winter conversation. Your projects are always interesting and good entertainment. Keeps the long cold months a little less boring.:bigthumb:
 
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