if you were to do it over again
#1
Registered
Thread Starter
if you were to do it over again
for the guys that built motors for your boats would you go with big inch 540-572 na motors or smaller 454-496 supercharged engines.can't decide which way to go.had some problems with a supercharged small block i did for my last boat.can get a deal on a procharger about the same price i would pay for a tall deck dart block.help me decide
#4
Registered
iTrader: (1)
Re: if you were to do it over again
I guess there are many ways you can look at it. It usually depends on personal preference---so, you're going to get a lot of opinions on this. Supercharged engines certainly have their place, but as for me, I prefer Naturaly Aspirated engines vs a forced induction engine such as a supercharger/blower. There's pro/cons to each application. One, is that you have to be careful with a supercharged engine when applied to a Bravo outdrive. I have a 32' boat with Bravo One outdrives so, I opted to go without the superchargers and add a few more cubes instead. HP still costs money either way you go.
JimV (OSO member) lost about 7mph when he removed his supercharger from his engine and went naturally aspirated, but he's MUCH happier because he has much less downtime, and isn't breaking drives anymore like he used to.
Naturaly Aspirated engines have less moving parts and require less maintenance. I suppose if I owned a larger, heavier boat like a 41' Apache w/#6 drives, then perhaps I would go with supercharged engines if I really wanted the boat to run well.
With a supercharged application the torque usually comes in like Gang Busters. Sure, torque is your friend in a boat----but brutal torque and Bravo Ones don't always get along too well.
JimV (OSO member) lost about 7mph when he removed his supercharger from his engine and went naturally aspirated, but he's MUCH happier because he has much less downtime, and isn't breaking drives anymore like he used to.
Naturaly Aspirated engines have less moving parts and require less maintenance. I suppose if I owned a larger, heavier boat like a 41' Apache w/#6 drives, then perhaps I would go with supercharged engines if I really wanted the boat to run well.
With a supercharged application the torque usually comes in like Gang Busters. Sure, torque is your friend in a boat----but brutal torque and Bravo Ones don't always get along too well.
#6
SORE MEMBER
Platinum Member
Join Date: Apr 2004
Location: 29°50'49.74"N 95° 5'17.55"W.......TEXAS
Posts: 6,989
Likes: 0
Received 1 Like
on
1 Post
Re: if you were to do it over again
If it's for this boat, i'll go with a 572NA. If I get another boat it will have closed cooling NA mercruiser packages.
#7
Re: if you were to do it over again
I wanted an engine that was built with the best components. I know that I spent a few more $'s with the 540s NA, but hope that I will have longevity on my side. And, like was said before - I have Bravos and it is going to be tough enough keeping them alive with NA.
#8
Registered
Thread Starter
Re: if you were to do it over again
what compression ratio's are you using with na motors,87 octane is the only thing they have on my lake.can you get away with 87 with 540 9-1 compression
#9
Charter Member #1171
Charter Member
Re: if you were to do it over again
Originally Posted by vandeano
I wouldn't of married my wife
That was my first thought !!!!!!!!!!
__________________
I want to live in a world where a chicken can cross the road and not have its motives questioned.
I want to live in a world where a chicken can cross the road and not have its motives questioned.