Facts about Evinrude/Johnson racing outboards made my OMC

[WaterZebra]

More is coming.

In the 2nd photo it is interesting to note the OMC clamp bracket. It allowed for relatively easy vertical adjustment where Mercs never did. Also the tilt pin axis is inline with the transom surface plane where Mercs were always fowward. I never saw any OMC powered OPC tunnels porpoise much where my Merc tunnels had a gallop. Connection?

[lars strom]

Renato’s Evinrude V6 in Chasewater UK 1978.
Thanks Fast on Water.

[lars strom]

Renato’s Evinrude V6 in Drammen, Norway 1979/80.

[lars strom]

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[Mugs914]

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Had that poster on my wall. Pretty sure I still have it rolled up with the rest of my old posters...

[lars strom]

Renato’s Evinrude V6 in Chasewater UK 1978.
Thanks Fast on Water.

Jim Nerstrom

727 V6 with Bendix Fuel Injection system.

[lars strom]

Two legends in deep conversation back in the summer of 1981.
Cees Van Der Velden (Johnson) & Renato Molinari (Evinrude)

[lars strom]

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[lars strom]

Downes Marine Racing

Play Time….

2025 First round.

[lars strom]

Bundaberg Poweboat Club
It’s race day
Hayden Juniors -Race 1 - 1st
Jason - 25hp - Race 1 - 2nd
Josh - 25hp - Race 1 - 4th
Craig F1 - Race 1 - 2nd bring it on.
Go the Evinrude!

[tgsearay]

In post# 13009 ….Are these motors the first generation of the Johnson Stinger Scorpion race engines? Circa 1971?
How much horsepower would they produce considering a stock engine was labeled as 115 hp.

[lars strom]

@tgsearay

Correct..the Johnson Stinger V4 come out 1969/70 and won the Paris 6 Hour race 1970 in this #12 boat.
My best guess is around 150HP at that time.

[WaterZebra]

Downes Marine Racing

Play Time….

2025 First round.

Is that an OMC SST100 engine? My understanding was it was a V4 mounted atop a V8 mid and gearcase? Fred Miller was the point of contact in the APBA for anyone interested in these engines. The class struggled on and off for several years then disappeared. The engine showed up at an odd time for racers and boat builders. Too big for SE and F3 boats but kind of small for V6 hulls. OMC should be complimented for building an engine intended for the hobbyist racer.

[STEVERINO]

@tgsearay

Correct..the Johnson Stinger V4 come out 1969/70 and won the Paris 6 Hour race 1970 in this #12 boat.
My best guess is around 150HP at that time.

Hi Lars i was told the early ones were around your guess but over the years they improved them over 4 years i was told they had dyno tests nearer 200hp.I had a std V4 Stinger in 1970 that was around 150hp only 2 std engines came to the UK in that year.My teamate Bill Shakespeare had a Factory Stinger the cylinder heads on his engine had around 250 thou off the heads compared with mine 250 thou is around a quarter off an inch which suprised me when you shut my engine off if was like a stock engine still turned a couple of times Bills factory engine sounded a much deaper exhaust note and when shut off stopped dead.

[powerabout]

Is that an OMC SST100 engine? My understanding was it was a V4 mounted atop a V8 mid and gearcase? Fred Miller was the point of contact in the APBA for anyone interested in these engines. The class struggled on and off for several years then disappeared. The engine showed up at an odd time for racers and boat builders. Too big for SE and F3 boats but kind of small for V6 hulls. OMC should be complimented for building an engine intended for the hobbyist racer.

The photo is a v6
But yes if they allowed modded 140 loopers the class could have been 200hp and still pump gas reliable