Hey Kilr, or any other speed gurus...

[Jordy]

Now, I know when you go through transom you pick up 5 mph or so. What happens if you run through transom and over the transom at the same time? 10 mph? 5 mph per exhaust or 20 mph???
http://www.***boat.com/image_center/...22DSC00216.JPG
All I know is this baby should fly. Sounded pretty good according to my neighbors 4 houses down.

[phebus]

No launchy for you!!

[Kilrtoy]

I am thinking a speed LOSS
not enough back pressure
-5MPH

[Sleek-Jet]

So how much vacume does that produce???

[Jordy]

So how much vacume does that produce???
I don't know. It was blowing posters off the back wall of my garage though.
The problem with the regular exhaust manifolds that go on it, is I can't pull the valve covers without pulling the exhaust manifolds. This way I could fire it up, build some heat in the engine and run the valves.
I am thinking a speed LOSS
not enough back pressure
-5MPH
I'm thinking that blower engines don't require much backpressure as they run great with zoomies that have no backpressure or scavenging benefits.
http://www.***boat.com/image_center/...22DSC00217.JPG

[Sleek-Jet]

I was just curious, because I read somewhere else on the board about blower motors and back pressure and vacuum.... and now I'm confused.... :notam:
You gonna take that thing out and get it wet???

[plaster dave]

are you sure I can pull my vaule covers without pulling the exhaust manifolds. Ijust use a swivel socket.

[Kilrtoy]

Now explain the point of both set ups on the same boat

[RiverOtter]

Now explain the point of both set ups on the same boat
Switchable Exhaust
Not So Silent Choice

[racecar.hotshoe]

Now explain the point of both set ups on the same boat
I think the botton is blocked off......