new here - Page 2

cterrebonne · #11 12-12-2007, 08:18 PM

south louisiana....i wish those were easy and cheap to find like most 150's. thats actually what i was going to try to put on with a bracket that would provide maximum flotation. but if it will sink the boat then i cant have that. ;D

tsubaki · #12 12-12-2007, 08:19 PM

Quote:

Originally Posted by nipper

There's an old thread in "Performance" section with a picture of a V with twin 70 h.p. outboards and some discussion of twins. *Twin 90's would be sweet.

My thoughts exactly. PERFECT, PERFECT.
Welcome to the site, POST PICTURES!! ;D ;D
Also list in your profile your location.

reelapeelin · #13 12-13-2007, 02:17 AM

Welcome to the site...hope ya get her powered up like ya want...keep in mind the fuel you'll need for 60 mi offshore trip...I got lots of faith in these boats, but that's pushin' the envelope pretty wide there IMO...a 2 hr run at 30 mph...make sure there a couple of lightweight fuel-sippers...a pair of my ol 86 150 Rudes woulda never made it ;)

macojoe · #14 12-13-2007, 02:28 AM

I missed that!! 120 mile round trip in a V??
78 V has what a 45 gal tank, maybe a 60? at best you get with one motor 3 miles a gal

Thats 180 miles if you don't move or drift and run back up and the weather doesn't turn and you have to fight the way home,cutting it real close!! And if you have 2 motors I don't care if they are 50 hp your not going to have enough!!

THEFERMANATOR · #15 12-13-2007, 02:43 AM

You can go the randalman route and get you a 140 JOHNZUKI. It won't be fast, but definately good on fuel. He reports 5 MPG I believe he posted with his 140 at a decent cruise speed. And stock the 76-80 models only had a 45 gallon fuel tank under deck, 81+ upped it to 60 gallons. I know even with my light flats boat, I've got 45 gallons on board and still couldn't pull off 120 miles. My 150 MERC only gets 2.5-2.8 MPG on a 18 FLAT's boat, but then again I got the BIG 150 ;D.

willy · #16 12-13-2007, 02:56 AM

Great boats, one of the best designs ever to be put to paper. Never designed to run twins I don't believe. Anything can be done though.
But, just cause it can be done does not make it smart. They are not designed to be long distance deep sea fishing boats. On a good weather window it could be done if you addressed the fuel issue with larger custom tank install or a bladder.
But just a thought, a 30 foot Bertram does not make a good all around in-shore fishing boat, does not profess to be and was not designed to be, the V20 does not profess to be a deep sea long distance possible heavy seas and weather boat, was not designed to be.
JMHO

cterrebonne · #17 12-13-2007, 12:40 PM

i understand the small tank situation. i often use my dad's v23 dual console and it has 150 yam's with 120 gal of fuel and i would have no problem going 60mi out and then back in.but its a bigger boat with more fuel. i was planning on puttin the extra fuel tank in the cabin, and the batteries oil tank etc in the console to compensate for the extra weight in the rear. the boat at one time did have twin 140's with a bracket and 54 mph on the gps. so that is kinda what im trying to acheive. also here in the gulf the weather is very predictable only have been caught once in 11 years.

cterrebonne · #18 12-13-2007, 01:17 PM

i plan on building a 80gal fuel tank for the cabin. that should put me at 120 gals.

Blue_Runner · #19 12-13-2007, 01:55 PM

IMO that will be way too much weight up front. When full you are looking at close to 500 lbs.

You need to find out what the fuel burn would be with twin 90hp 3 cyl engines and then figure on how much fuel you will need. 80 gallons of fuel alone at 2mpg would provide 160 mile range. So you might only need 40 more gallons?

What a quandry :-/ I've been on 100 + but not much over 100 mile round trips with my single 150hp and 60 gallons. The most I've burned was around 50 - 55 gallons and that was coming back in Oregon Inlet. I was a little worried with nightfall approaching but at least we had other boats with us. We went past birds diving on boiling fish and I was just too nervous to stop and play.

parishht · #20 12-13-2007, 02:13 PM

I have a 78 as well, if you lift the gas tank cover that is between
the pilot seat and passanger seat, there is a large open area.
I converted mine into extra storage for anchors.
That would be a great place to put an dextra tank
that would hold about 25 to 30 gallons.

Just a thought.