New 2011 Boats

[kaneboats]

They are Americans.

[mmandley]

Getting in a little late as i was at Lake Billy all weekend wow it was awesome.

As for Torque and HP i agree with Zegm but my friend you forgot another factor in your spark plug inhibited world.

Torque and HP are not limited as much by size and rpm as you think. There are many factors to explain this.

1 350 Inmar engine 5.7L 325 hp. Now this same engine has been used for some 50 years now and has had as many HP and Torque ratings as a red light district has customers.

For Gas engines HP is determined by how much Air+Fuel+Compression * RPM = Finaly output numbers.

Case in point. 350 engine with 325 horse and 325 torque. Change Only the Cam in it and you will get 350 HP and 350 Torque, so what changed the amount of lift in the valves allowing more gas and air to be compressed but all this at the same RPM.

Diesel now this is a completely different beast.
mine for example is 6.0 that's apx 400cu block. Revs to 4500 RPM red line HP is only 300 but torque is 690.

Diesels already work on super high compression due to diesel burning at a much higher temp then gas but when it does burn the explosion it creates is so much stronger and this is were the twisting or torque power comes into play. This is how a Diesel will have lower HP and higher torque.

as for the older conversation about HP and Torque in Indmar engines is they don't list Torque at all and refuse to. Most and almost all Boat companies wont list the torque of an engine. This is due to it being irrelevant when you add a prop because you can have the same engine on 3 boats and change the props and they behave very differently. We did this is the prop testing.

If you really want to know how much torque is in your engine take it out and dyno it, then subtract 7% for the drive train and that's a very close apx to the torque on your prop. In a car or truck its as much as 25% loss in the drive train.

[zegm]

You know it could be that Indmar doesn't have an engine dyno!
You are right about the props and the different hulls etc. My old Stars and Stripe supposedly had just 225hp but she was still the fastest skiboat I have ever been in. And that was probably like you said the original owner changed the cam so he could barefoot with it!
Can you clear up the 7% loss as it relates to the V-drive vs. the Direct drive?

PS and don't let us forget that little pistons can always spin faster!

[zegm]

They are Americans.

Exactly my point, you are either on one side of the fence or the other.

Ford or Chevy

Republican or Democrat

Diesel or Gas

One piece or two piece!

Speedo or board shorts!

Tiger or Elin

DD or VD

I think you get my drift!

PS we had a surprise visit with a famous golfer and his ex-wife yesterday!!!

[mmandley]

You know it could be that Indmar doesn't have an engine dyno!
Y
Can you clear up the 7% loss as it relates to the V-drive vs. the Direct drive?

PS and don't let us forget that little pistons can always spin faster!

The 7% is the drag loss of the drive train transmission. A V drive wont cause much loss as its really only 2 gears splined together. Transmissions will have a % loss due to rotational drag and such. 7% might be high even IDK for sure i just know there is a loss.

In a car or truck you can see this loss very easily, Dealers always advertise the HP and Torque as at the rear of the engine, now go put your car on a Dyno and you will see true numbers. This is also why you hear gear heads talk about i got 400 HP at the Rear wheel. This means they are closer to 450 HP at the engine because the trans, drive shaft, rear diff, and if you have 4x4 transfer case all rob power and torque as it takes a certain amount to turn those units.

[maxpower220]

Hp and Tq can (and in the case of boat engines) are measured at the crankshaft. There is nothing to do with mechanical losses.
HP and TQ are tied together mathmatically. In every 4 stroke engine, tq and hp will always be the same at 5252 rpm.

[maxpower220]

Ok I am confused, how can one family own a Chevy and a Ford at the same time???

I got hooked on the Avalanche a long time ago. As long as they make one, I will probably own one as it meets all of my needs in a great package.
When searching for my wife a car, nothing was even close to the Fusion Hybrid. We drove Prius (golf cart), Civic Hybrid (nice, but Japanese), BMW 5, and MB E class (both nice, but expensive and nothing good for mpg).

In the end, I do try to support American businesses if the product is the same or better. No matter where the product is made, the profits go to the homeland of the company. When America doesn't make a product that I want/need, I search for European markets before Asian. That is another reason I have an aprilia Dorsoduro.

[zegm]

I got hooked on the Avalanche a long time ago. As long as they make one, I will probably own one as it meets all of my needs in a great package.
When searching for my wife a car, nothing was even close to the Fusion Hybrid. We drove Prius (golf cart), Civic Hybrid (nice, but Japanese), BMW 5, and MB E class (both nice, but expensive and nothing good for mpg).

In the end, I do try to support American businesses if the product is the same or better. No matter where the product is made, the profits go to the homeland of the company. When America doesn't make a product that I want/need, I search for European markets before Asian. That is another reason I have an aprilia Dorsoduro.

Well my wife traded in her 2005 Mexican made Avalanche for her 2006 Mexican made VW Diesel Jetta. Next time try one of those, 40mpg and Fast at the same time! When they came out with the Wagon version she traded that one it for it! They added 40 more hp (140) and 50 lb-ft of torque (235) and it is even faster. A diesel station wagon that has a top speed of 128mph!!! I even installed a hitch on it, not for the Moomba but her other boats....kayaks.
We did love the 4 x4 Avalance but I ordered it with a 4:10 rear axle ratio. What was I thinking????

Now if I can only talk her into an Italian motorcycle!!!

[maxpower220]

My wife's previous car was a Volvo S60-R. She doesn't need to go fast any more. 300 hp with AWD, and I think she used all 300 everyday.

[zegm]

My wife's previous car was a Volvo S60-R. She doesn't need to go fast any more. 300 hp with AWD, and I think she used all 300 everyday.

We noticed that when the wife went from a sedan to a station wagon that she gets LESS attention for the enforcement folk! Which is a good thing because she too only knows one position for the gas pedal too, all the way down! Especially if there is a Prius around!