Facts about Evinrude/Johnson racing outboards made my OMC

1985 OMC introduced the redesigned V8. Still 3.5 liter but a very short 6 inch mid section, fuel injection and new cowlings.
Cees van der Velden is working on the new beast..!!
Still most of the F1-V8 races was run in Europe.

http://www.screamandfly.com/attachme...3&d=1498141666

The Dream Start for F1-V8 racing 1985. Munich, Germany Pro One´s first event..

http://svera.se/blogg/f1-v8/the-dream-start-for-f1-v8-racing-1985-munich-germany-pro-ones-first-event/


http://www.screamandfly.com/attachme...4&d=1498141855

there was at least 3 different exhaust systems
the 3.5 with EFi must have been a beast, I believe some where built with heavy rods so could run over 10k before the rule changed to 3.0ltr

Ben Robertson look likes he is in love..:)

http://www.screamandfly.com/attachme...4&d=1498143840

http://www.screamandfly.com/attachme...1&d=1498139514
Don't thank me , just reposting

Ron Anderson and the mighty OMC F1-V8

http://www.screamandfly.com/attachme...2&d=1498149552

The F1-V8 gearcase.

http://www.screamandfly.com/attachme...7&d=1498150603

Quote:

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Originally Posted by Rotary John

The 2 (two) V-6 that were introduced at Paris in 73 were sand cast cross flow blocks sleeved for 2l. The cranks were actually V-4 cranks cut and welded together. Most of the parts came from the production V-4 with the obvious special V-6 parts either hand made or sand cast. By the way, they were not "red" they were painted ROTARY orange. We had lots of spray cans of paint in the race group.

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Hi John you are right about the engine blocks being painted orange I was told the first 2.0V6 crossflow engines that you mentioned never ran over 4500 rpm with the welded cranks so I think that they ran pretty good in that Paris 6hr race if that's true.Its a grate pity that Ziggy is now gone he could answer all these questions that are now being asked.

Duel spark plug cylinder heads

http://www.screamandfly.com/attachme...7&d=1498152427

Lunch break..!!

http://www.screamandfly.com/attachme...1&d=1498157479

1985 the first year of the 6 inch mid section some broke because of bad materiel..OMC made new ones and the problem was gone.

http://www.screamandfly.com/attachme...4&d=1498161592

Bristol 1975
Cees van der Velden racing his Velden with a Johnson V6 2 liter cross-flow.
Click for much more..

http://svera.se/blogg/facts-about-larger-racing-engines-made-by-omc-in-the-seventies-and-eighties/

http://www.screamandfly.com/attachme...7&d=1498165358

Quote:

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Originally Posted by STEVERINO

Hi John you are right about the engine blocks being painted orange I was told the first 2.0V6 crossflow engines that you mentioned never ran over 4500 rpm with the welded cranks so I think that they ran pretty good in that Paris 6hr race if that's true.Its a grate pity that Ziggy is now gone he could answer all these questions that are now being asked.

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Its unfortunate, but Jim Nerstrom was the 2 cycle race engineer from about 1975 till the end of OMC. He doesn't get on this site (uses BRF) but has a hard on for OMC and won't talk much about it.

Quote:

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Originally Posted by lars strom

1985 the first year of the 6 inch mid section some broke because of bad materiel..OMC made new ones and the problem was gone.

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Another idea borrowed from the Rotary.

Jim Nerstrom was very good and extremely smart.
Yes, many good OMC people got burned when the top
management did all the stupid mistakes ending up in the worst
"belly up" in the marine history.
I know Jim enjoy airplanes and I still have some connections with him.