BRP Rotax 2cyl 165hp

**H2OPERF** · 07-21-2017, 07:19 AM

This would be bad ass on light boat with a 2 cyl mid, I can only imagine what we would have today if the big companies got into the racing wars of the 70s...https://www.youtube.com/watch?v=GGPGTQT0aD8

**Instigator** · 07-21-2017, 07:27 AM

Baddd assss!

Makes our powerheads look like crap.
I love the detailed castings.

**H2OPERF** · 07-21-2017, 07:39 AM

Hey Gary, did u see the video..I posted a link ,it has positive main bearing oiling.. I did this on mine, used an optimax oil pump and plumed lines to the mains not relying on the hope that oil will migrate ..brp is on it with this thing. Dave

**Instigator** · 07-21-2017, 07:53 AM

Originally Posted by H2OPERF

Hey Gary, did u see the video..I posted a link ,it has positive main bearing oiling.. I did this on mine, used an optimax oil pump and plumed lines to the mains not relying on the hope that oil will migrate ..brp is on it with this thing. Dave

Missed it first time but just did.
Wow!

If only they'd put that effort into an O/B p.head.

**FMP** · 07-21-2017, 08:27 AM

They failed to mention a very important part , the exhaust and chamber. Also power curve of that crank hp.

**H2OPERF** · 07-21-2017, 09:06 AM

This is stock, i'm sure it wasnt with two big expansion chambers.. and like any of our mild to wildly ported stuff has much bottom end. I had a fishin boat with twin 225 promaxs buried with std non slipping props an it was a pig off the line.. A 3cyl version of this would be in v6 hp ranges...

**FMP** · 07-21-2017, 09:12 AM

Maybe when it's up on the pipe

**H2OPERF** · 07-21-2017, 07:20 PM

Agreed, but still would be cool as all on a light boat,,

**FMP** · 07-21-2017, 07:44 PM

Be cool to get inside the r&d test area. Where's that G2 thread Greg was telling us about?

**powerabout** · 07-21-2017, 08:31 PM

it wont last like a outboard
its more like a 300 drag merc
can you drive uphill for several hours at WOT in a sled?
You see they have trouble with rings so the steel inserted ring land, nice but they need it.
be cool in a 3 cyl, 250hp!!

**racervboat** · 07-22-2017, 08:55 AM

so if brp made it a v-6 o/b powerhead its 83.5 hp per cyl = 83.5 x 6 = 501 hp now if scream and flyers got ahold of it because we cant leave things alone 600 + and up hp BRP MAKE ONE DAMN IT.

**powerabout** · 07-22-2017, 09:14 AM

Originally Posted by racervboat

so if brp made it a v-6 o/b powerhead its 83.5 hp per cyl = 83.5 x 6 = 501 hp now if scream and flyers got ahold of it because we cant leave things alone 600 + and up hp BRP MAKE ONE DAMN IT.

vee wont make the horsepower per cyl that an inline will make

**FMP** · 07-22-2017, 10:00 AM

Yup, make an inline 5 , 72* pin spacing, 13524 or 15234 order with equal length pair tuning, looper. Yup, nothing smoother

**John800** · 07-22-2017, 01:51 PM

As is, even with the pipe a sled motor is not a very good fit for even a small boat. Design the expansion chamber for it? That could make things interesting. Maybee an inline 4 with 2 2 into 1 pipes with more displacement than that motor could make a nice outboard, with pipes mounted to the cowl!!!!