300r vs 300xs on same boat

**Chaz** · 02-15-2020, 11:26 PM

Chaz = thinkin, speakin of cartoons .. Good thing H20F1 grandfathered in the 2.5L into their format .. It would be hard to race a rendering ..

**H2OPERF** · 02-16-2020, 10:39 AM

Adapting a powerhead is nothing, gear ratio/ props and balance to make them compete with an existing 2.5 setup will have to be seen, huge rpm difference in the powerheads. They will prob change the boats /courses then the 2.5 will go away...

**powerabout** · 02-16-2020, 09:11 PM

Originally Posted by H2OPERF

Adapting a powerhead is nothing, gear ratio/ props and balance to make them compete with an existing 2.5 setup will have to be seen, huge rpm difference in the powerheads. They will prob change the boats /courses then the 2.5 will go away...

F1 tractor pull....

**Chaz** · 02-17-2020, 10:44 PM

Originally Posted by H2OPERF

Adapting a powerhead is nothing, gear ratio/ props and balance to make them compete with an existing 2.5 setup will have to be seen, huge rpm difference in the powerheads. They will prob change the boats /courses then the 2.5 will go away...

Hey man ... it might be slow .. down the straights ..

But ... it sure is top-heavy round the bends ...

**powerabout** · 02-17-2020, 11:46 PM

Will it run better than an old omc f1 v8?

**JrCRXHF** · 02-18-2020, 09:17 AM

Originally Posted by powerabout

Will it run better than an old omc f1 v8?

Not pound for pound. The thing still has to go around a turn. They just need to make a boat and a class for the 4 Jokes if they want to race them.

**Capt.Insane-o** · 02-18-2020, 11:05 AM

Those guys can tell if they took a piss or not balance wise when they get in the boat. The 2.5 is going to be very very tough to replace regardless of what the jiffy lube oil changing loving queers say.

**johnmiffco** · 02-18-2020, 12:14 PM

yes 2 strokes are going away for the heavier 4s,,,thats a given
I still like the lighter high reving 2s
so boat market for o/bs have gone to larger hulls to handle the heavier 4s
and most o/b sales goes to the CCs and now larger performance cats
so the 16-18 hod rod hulls are going away slowly
just like in racing sst120 went to the opti 200
in early yrs opti couldn't compete with 120
then merc discontinued the 120 and added more power/higher rev to it and courses went longer on straights and more 2 pin turns
optis now were competitive,,,but at the cost of a new motor and a new hull to handle the motor
class died out drastically,,,,,,,
then x cat went to 400 with the 4 stroke over the 280s and discontinued them also,,,,,new motors and larger new hulls
today that class is struggling
now to 4.6 on F1
will do the same I would imagine following its the evolution of what manufacturers make and user to adapt to how used

**AZMIDLYF** · 02-18-2020, 12:33 PM

Did hulls have to change/grow to handle the OMC F1s?

**johnmiffco** · 02-18-2020, 02:44 PM

way back in them days of the omc F1s they were mostly factory sponsored boats and hulls were made for the set up
bill seabold entered into their races with the 2.4 merc f1 and they built their own hulls and were bit shorter
back then they were narrower hulls and used length more in them non capsuled boats
them fuel injected F1 v8s were some snotty power for the day
downfall was hoping to finish 10 laps on the limiter,,,,,lol

**powerabout** · 02-18-2020, 06:55 PM

Originally Posted by AZMIDLYF

Did hulls have to change/grow to handle the OMC F1s?

yes check out the later stuff with Ben Robertson, Beaumont TX 145mph lap average...

**powerabout** · 02-18-2020, 06:56 PM

Originally Posted by johnmiffco

yes 2 strokes are going away for the heavier 4s,,,thats a given
I still like the lighter high reving 2s
so boat market for o/bs have gone to larger hulls to handle the heavier 4s
and most o/b sales goes to the CCs and now larger performance cats
so the 16-18 hod rod hulls are going away slowly
just like in racing sst120 went to the opti 200
in early yrs opti couldn't compete with 120
then merc discontinued the 120 and added more power/higher rev to it and courses went longer on straights and more 2 pin turns
optis now were competitive,,,but at the cost of a new motor and a new hull to handle the motor
class died out drastically,,,,,,,
then x cat went to 400 with the 4 stroke over the 280s and discontinued them also,,,,,new motors and larger new hulls
today that class is struggling
now to 4.6 on F1
will do the same I would imagine following its the evolution of what manufacturers make and user to adapt to how used

F2 saying they will be forced to change as well, I wonder what they will use?

**Dave Strong** · 02-18-2020, 07:02 PM

From what I remeber V8, 2.5 and 2.0 all had different min weights not sure about length.

Dave

**johnmiffco** · 02-18-2020, 07:47 PM

American F1/F2 hulls has to be minimum 16' long from transom to tips
Im uim certified builder to 40000 newtons and built my own hulls and raced them from 2000-2010
in 2000 average hull was 17' 46" tunnel I was some of the earlier wider hulls
mine were 16'6" 48-49" tunnel
and new hulls are more now

**Chaz** · 02-19-2020, 10:24 AM

Originally Posted by powerabout

F2 saying they will be forced to change as well, I wonder what they will use?

They tried the 150 HP 3.4L V-6 4-stroke in F2 .. couldn't keep up ..

With pistons and cams to be AVAILABLE IN 2025, expect to see the 4 strokes on the back of center console boats parking ever so effortlessly ..

The fun part will be, when the captain gets ready to leave. And forgets which was the last, across the rack motors he started. Since he can't hear them running ... it will be just like at the butcher ... hit that same key again and grind me a pound ...

With the Walmart 10 CD "tune" changer, 50/50 mix of 87 and 90 "wreck" fuel, they find that the 4.6 fits in the 250cc class and the new 3.4 can hold it's own with the 125's ...