First Three Cyclinder Evinrude

[smittythewelder]

That first 55hp had only two transfer ports, and it had odd, hat-shaped combustion pockets with swirl-grooves leading into the pockets. Later versions added a third transfer port, or great big boost port depending on your terminology, and had normal looper combustion chambers, oh and they changed from domed to flat-top pistons with longer, stronger rods. Jim Hallum, who was known to some of the bigs at OMC, and who was an OMC mechanic, got one of the second-generation powerheads and hopped it up with porting and oversized carbs and reedblocks for Gerry Walin to use in FOH, a year or so before Gerry got hurt. Among those who have built fast Evinrude triples in more recent years was Gary Hanson of Seattle, whose FRR DeSilva streamliner performed the most violent flip I ever saw, a longitudinal snap-roll that happened in an eye-blink. Amazingly, Gary was unhurt, and considered it just another dunking.

[Smokin' Joe]

Held APBA EP straightaway record at 70.560 mph. until class was defunct after 1985. Record boat was not as fast as the one shown, was an XR-14 Allison instead of the modified older 13' model in the photo. Would run 67 mph. (speed shown in photo via radar gun, 1983 at Alexandria, La.) set up for closed course.

[billy-jay]

Back in the eighties I ran a 75 Evinrude on a 13ft Delta and later a 13ft tunnel top Critchfield in EP and back then I was really impressed with that 70.56 at 840 lbs in fact Im still impressed today...that was quite an accomplishment...and the record still stands...Congrats

[sheuninck]

http://www.youtube.com/watch?v=41b49FieyR8

[Smokin' Joe]

Then we probably crossed paths.

Back in the eighties I ran a 75 Evinrude on a 13ft Delta and later a 13ft tunnel top Critchfield in EP and back then I was really impressed with that 70.56 at 840 lbs in fact Im still impressed today...that was quite an accomplishment...and the record still stands...Congrats

[phillnjack]

I know this is an old topic to drag up (no -pun intended)

but ive just joined and i find this brilliant topic to read.
Info on the early 3cyl omc engines is great.

Real racers going very fast.

there must a be a lot more guys out there who raced these engines.


phill...

[sheuninck]

http://www.youtube.com/watch?v=zlCYG...ature=youtu.be

http://www.youtube.com/watch?v=1wTknE3-RGM

[boatmark59]

I know this is an old topic to drag up (no -pun intended)

but ive just joined and i find this brilliant topic to read.
Info on the early 3cyl omc engines is great.

Real racers going very fast.

there must a be a lot more guys out there who raced these engines.


phill...

I did ! !
EP was a great class in the 70's / 80's where I was in Ft. Lauderdale.
You could race 10-12 weekend a year and never travel more than 4 hours from home. And always have an 8-10 boat field.
Add in going out of state to the two nationals, and it was a great thing. I miss those days.
My dad says he used to budget $100 expenses for a race weekend. Now that would barely buy a tank of gas for the van.

[Steve Pinson]

I can remember in 1975 at the Omc plant in Brugge Belgium watching a uk driver named John Hill practising for a race driving a Burgess cat with a 3cyl engine at 100 mph?

[phillnjack]

100mph wow

that aint hanging around at all.

i dont think i fancy doing 100 in a small boat, infact 100 in a big boat would be terrifying im sure.

The thing i like about the 50's 60's and 70's racers is they were such pioneer's.

today a lot of stuff is done on simulators and computers before the drivers of the latest stuff get anywhere near them.

Plus an old van with a bag of spanners is not exactly whats seen in the pits now days.


phill