T.Clarson

Hey guys,
I just bought a 98 Formula 271 ,502=415hp(stock) . I had such a hard time planing I thought I damaged something! So I've been searching the forum and see that slow planing is an issue.So far I see remove the plastic stop on the trim, vent the cavitation plate and maybe a five blade prop. It's been 10 years since I've had my 85 302 SR1 so I'm a little rusty. Any advice would be appreciated, Thanks

Mr Maine

What prop is on it?

ALL_IN!

iTrader: (1)

Assuming you have trim tabs?? ....tabs all the way down, trim all the way in/down. Throttle up and find the sweet spot. This may take a while, but I'd think a 27 footer should pop up pretty quick. My old 27' Fountain did.

As previously mentioned, what prop are you running?

F-2 Speedy

iTrader: (6)

in addition........ how much weight are you carrying......., fuel, people, coolers...............I had a Baja 272 and never had to use the tabs, same engine as you.

T.Clarson

Bravo 26, pretty dinged up. Can that hurt

T.Clarson

I was full of fuel, 4 people,tabs down,drive tucked in. I have the small Bennett tabs though

Mr Maine

Assuming it's a 1.5:1 outdrive that is too much prop. What are the rpms wide open? You need a 24 pitch preferably not all dinged up.

Sydwayz

iTrader: (1)

What he said, You might even need something a bit different than the 24. A 22 even.

Griff

It can hurt a lot.
It can also ruin the bearings in the drive from being unbalanced.

And you most likely need a 22" Bravo prop.
That's a 55mph boat with that hp.

SB

iTrader: (1)

A lot of Formula's came with 1.65 gears vs the normal 1.5's.

Check and report back.