Verado 275 - 400hp ??

**DarthVMAX** · 08-04-2004, 02:42 PM

I think there is a little mis-understanding here....

I wasn't trying to say "see, I told ya so". I was just showing what I have read...that is all. You could dismiss more than half the threads on the net if we all had the attitude of not believing anything until it was personally experienced. Example: Would you believe a 300 drag motor on a STV is fast even though you have not driven one or even seen one run yourself? Unless the boat was sinking or it something was malfunctioning I sure would think of it as a fast boat. How about RRevinrudes 127 mph claims in his HST??? I have no reason to dispute him.

Call me gullible

I'll go back to my shack...boo hoo hoo

**optimax135** · 08-04-2004, 02:49 PM

Love you too man!

**sho305** · 08-05-2004, 10:54 AM

That big Verado, seems like someone would be tooling up molds for a 24' basser now

maybe more...

**Blizz** · 08-05-2004, 10:09 PM

The big aluminum work tub that the marina put one on up here is getting mid 60's and it weighs a hell of alot more than a bass boat so if their only getting the same it's the way they're set up and that's runnin 6200RPM's. And let's remember some of the big names that helped create this beast ie Cosworth, Lotus, BMW, which are very big in the hi-po arena so if Merc wants it to be the power can be made.Blizz Oh ya it does punch as much or harder than any 2stroke fishin mota felt that myself..

**sho305** · 08-05-2004, 10:44 PM

Big basser! This spring some dealers were running ads for left over bass boats at $30K. I thought that was a lot of cash for a standard bass boat with a V6, but that is what they are I guess. Just think you could have three bayliner I/Os for that...lol

Just seems like if you get a big boat with a cuddy you have something more than a flat deck.

**Riverman** · 09-23-2004, 02:58 PM

Sorry I got into this a little late but...

WRT the Verado supercharger eating saltwater, I read somewhere that the rotors in this 'charger were of a non-metallic construction - read composite. Aircraft propellers are being made out of carbon composite, why not these rotors?

I think one of the weak points of a blown engine running at a constant heavy load is the exhaust valve. The exhaust valve is the hottest running part on the engine, and the only cooling it gets is when it is closed in contact with the head. The engine (valve timing) designer must choose between valve open time (performance) vs. valve closed time (longevity).

The supercharged engine doesn't need the exhaust valve open as long as the turbo engine, as the turbo needs maximum exhaust flow to develop boost. Therefore, expect the exhaust valve to live longer on a supercharged engine.

My .02 - RM

**yahoo** · 10-10-2004, 07:57 AM

Has anybody looked at the lower ? It looks like a bravo unit, anybody know of a nose cone(low water pickup).

Im waiting for the counter rotating on the 20inch shaft.

I will be putting them on a 30ft motion cat.

replacing 2.5 efi's.

CM

**blkmtrfan** · 10-10-2004, 12:51 PM

Originally posted by yahoo
I will be putting them on a 30ft motion cat.

replacing 2.5 efi's.

CM

How many?

**yahoo** · 10-10-2004, 05:14 PM

2 Im hoping that in the future there will be a chip.

**sho305** · 10-11-2004, 06:12 PM

I figured the exhaust valve on a turbo closed sooner due to the backpressure causing reversion, but I guess I'd have to look at cam specs to find out as I don't remember for sure. No doubt heat would be a problem with a turbo.

From all the talk about the Verado, it looks like they use the blower to get more punch...and the 4 valve head/etc to get power at high rpms and not so much blower then...but I'm guessing. Certainly with the electronic blowoff they can make the power curve/boost curve however they want. It seems like they could get that power on top with a cosworth motor/etc and the size/rpms its at, but not the bottom power.

**1BadAction** · 10-11-2004, 07:04 PM

SHO- i have been in bigger offshore boats with twin 275 verados, that are specifically being designed to handle the power of twins... the holeshot is more than excellent, its downright scary.

people shouldnt knock this untill they have been in a boat with one that is set-up good. Most magazine test i have seen arent propping the motors right. From what the riggers are saying, ideally, the motor will turn 6300-6400 on top. imho, the motor doesnt seem to be limited by cam, just by boost, so the torque curve is quick untill it hits its HP cutoff, where the bypass valve cuts on, then it goes flat. it is the sickest accelerating boat with stock motors i have ever been in, and thats saying something considering the boat was 7500+ lbs

**sho305** · 10-12-2004, 11:22 AM

Oh I don't doubt you, Greg, and others here who have run them. Blowers will give punch for sure. I spent some time in two identical 28' vees with twin BBCs. One had Merc 525s, the other had beefed up 365s with heads/502 cams and carbs/headers/etc. They both ran side by side wot at 80+. If you rolled on at lower speeds the blowers would pull a boat length or two, then run even. But the blowers took more fuel on trips...then again this was all old tech carbs, no electronics and such.

The 365s had hogged oval ports and ported rectangle performer RPM intakes to preserve some midrange torque, or they would have gone faster (but took more cruise gas, had less midrange/holeshot) with rectangle heads and a single plane. They dynoed a nice flat curve of torque starting at 3500rpm, but the blowers would pull away every time in mid rpms. 525s had headers, don't remember it they were stock or not, but motors were.