v6 inline6 v4 ?

[anthony115merc]

what would be the difference between a v6 v4 and inline6 115hp motor would a inlive 6 be faster than the v4 ?what is your opinion?

 

[Chinewalker]

Re: v6 inline6 v4 ?

Depends on the motor, the set-up and the boat they're on. It's more about cubic inches that it is about the motor's cylinder configuration. Crossflow V4 OMCs are approximately 100 cubic inches, as are the I6 Mercs, so it's really a push rather than a clear cut advantage to one or the other...
- Scott

 

[anthony115merc]

Re: v6 inline6 v4 ?

so its all about the cu and props

 

[Windykid]

Re: v6 inline6 v4 ?

The HP rating is the same, there could be an argument as to the efficiecy between the V configuration and the inline.

 

[redjmp]

Re: v6 inline6 v4 ?

From an engineering point of view, the straight 6 is a better design. It balances better than anything up to a v12. That is why practically all big commercial trucks run straight 6's and not v6's or v8's.
The problem with straight 6's is that they take up a lot of space.

 

[jimmbo]

Re: v6 inline6 v4 ?

The short stubby V4/V6/V8 crankshaft is less prone to torsional twisting and whipping than the long inline six crankshaft.
Exhaust wise, it is much easier to design a tuned exhaust that works over a much broader rpm range for a six cylinder than one on a 4 cylinder, talking 2 strokes here.
Six short stroke small bore pistons versus 4 longer stoke bigger bore pistons. Small bores offer better/easier control of combustion and lighter pistons. shorter stroke mean lower piston speeds.

 

[anthony115merc]

Re: v6 inline6 v4 ?

would there be any difference getting up to speed between these?

 

[Texasmark]

Re: v6 inline6 v4 ?

If it helps, back in '72 I had a Johnson 125 (V4) on an 18' trihull (Caravelle). Every time a Red Banded Merc (125 hp also, but I6)saw me they wanted to get it on. So I spent a lot of time running and hiding.

About OTR trucks engines. Inlines produce lots of torque in part by their long, heavy crankshaft. Also the inline on a big truck allows plenty of space for mounting necessary accesories.

On outboards, we keep debating the value/application of torque and it seems that some of us can't agree on the physics of the process. But I guess it's not that big of a deal......but I'm still not happy with any of the answers I get. But I guess I'm just hard headed and stuck in my ways (Grin).

Mark

 

[sourbsted]

Re: v6 inline6 v4 ?

I had an outboard mach tell me i should buy a V6 merc if i want more power and speed. He said they have **** load more talk and get up on to a plane quicker. What would the capacity be on a blackmax? Does it have much more cube's? As far as i know they would have to be of a larger capacity cause of the hp range 150-225HP...

 

[phatmanmike]

Re: v6 inline6 v4 ?

What would the capacity be on a blackmax? Does it have much more cube's?

merc black max's were made as 2.0L v6's as 135hp and 150hp. then they made the 2.4L as the 150, 175 and even 200hp. then they made the 2.5L wich was used as 135, 150, 175, 200, and i even think they made high performance versions all the way up to 260 or 280hp.

cubes is everything. a 3.0L merc 200 will eat a 2.4L 200 all day. same hp, but arrives differently in the powerband and difference amounts of torque.

i owned 2 motors on 2 boats, a 2.5L 200hp and a 3.0L 200hp v6 , both on 20' center consoles at the time. while both boats were not the same make a, they were close in weight and hull design, i could tell that the 3.0L was much more powerful. you could feel it when it took off and accelerated.


ANYWAYS....... ive also owned many inline mercs and also v4 johnny rudes on the same boat. both were 1.6L. im not sure but i "think" the 140hp V4 was bigger or different than all the other v4's. the inline 6 mercs were famouse for racing, and the V4s were famous for all out BEEF power.

 

[jimmbo]

Re: v6 inline6 v4 ?

The first Black Max back in late 75 was a 2 litre 175hp, crank rated mind you.

V4 140s Untill the loopers came along were 99.6 cubid inches or 1.6 litre. The 140 looper was originally 110 cu or 1.8 litre. A couple of yeers later it was increased to 121 cubic in. or 2 litre. The loopers are huge when placed side by side with a crossflow.

 

[anthony115merc]

Re: v6 inline6 v4 ?

what would a 115hp inline 6 merc 1970's be in litres?

 

[steelespike]

Re: v6 inline6 v4 ?

1635 all inline sixes 68-88 except the 1000 were 1635.My book only goes to 88 but it appears 1635 ran at least from 68-88.

 

[anthony115merc]

Re: v6 inline6 v4 ?

1.6Litres?

 

[sourbsted]

Re: v6 inline6 v4 ?

I thought the inline 6 had a larger capacity than that. I always believed it was a 2 ltr

 

[Chinewalker]

Re: v6 inline6 v4 ?

Nope - the largest inline sixes were approx. 100 cui./1.6 litre. Same for the OMC crossflow V4s.

I agree on the comparison - the I6 Mercs would scream at wide open, but the V4s always seemed to have the brute force low end grunt. Kind like comparing the tall, lean sprinter with the short, stocky power lifter. Both are very strong and athletic, but good at different things...
- Scott