Maybe a bit late, but here are pictures of my Nydahl system
Maybe a bit late, but here are pictures of my Nydahl system
Thanks!
I see the exhaust re-enters the tower at the bottom of the box. I suppose a hole could instead be made at one end of the box, leading to an external pipe and muffler (like the photo below).
Jeff
Tim haven't you made a few like that? With the pipe out the top?
Helping folks out around the globe.
Yes, I've built 40 or so racing systems over the last 15 years, all with sprayed water cooling. About 12 were down outlet, the rest were top outlet. There are another 5 in production now.
A Nydahl is on the way for duplication & improvement. These will be internally cooled for use under cowl, but can be used for racers also. All will duct exhaust under the powerhead.
Tim
Out the top is all about the firing order and which cylinder is plugging the outher
The nydahl log box is all about adding volume where the cross pulsing is going on so
cylinders arent swaping flames, it lowers temp in box so squeeze wont burn pistons.
This by no means is the only advantage or reason. Nice thing about chamber is squeeze is moved down stream to tail cone so you can sqeeze more without burning up stuff which means you can go with alot more port timing and reap more power.
hope it helps some one out there
ANTHONY McCULLOCH
modifiedoutboard@hotmail.com
Some things never change!
They Want it cheap..............
..."Hey Fast Jeff, Is that a 62 CI alky?"
I wish! It's a plain old Merc 49 inch triple (the motor some people love to hate).
Jeff
...But I see 4 spark plugs...
Yeah, I think thats Unkie's 62. Same boat he ran the Konig on if I recall. Neither lifted the sponsons off the water
Since 1925, about 150 different racing outboards have been made.
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