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08-02-2020, 05:15 PM #7186
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08-02-2020, 05:32 PM #7187
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Lake X Kid liked this post
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08-02-2020, 05:35 PM #7188
Up & Down was also on the Evinrude CC when it came out 1976.
Yes, I used the up & down. Very helpful in longer marathon type races.
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Mark75H liked this post
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08-02-2020, 07:27 PM #7189
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Lake X Kid liked this post
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08-03-2020, 08:49 AM #7190Screaming And Flying!
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light rods with new bolts
note they use v4 crank and pin bearings
Large rods are huge, the bolts have 7/16 heads on them. I will try to get a photo
Both rod styles are not cracked, just machined and no dowl
Same length as production looper ( not measured but they look the same)
Crank looks the same just shorter stroke.
Balancer is the same but didnt use the viton rubber of the production engine
Production dyno tested them to 9500rpm with the late rods before shipping to check the charge coil voltage.Last edited by powerabout; 08-03-2020 at 08:54 AM.
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Lake X Kid liked this post
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08-03-2020, 09:11 AM #7191Screaming And Flying!
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Degree spacing between #1&5? If at TDC spacing looks inline with fishing crank pic, under 45°.
Like to see fishing and F1 cranks. Did the later ex manifold F1 have it's own crank?Last edited by FMP; 08-03-2020 at 09:23 AM.
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08-03-2020, 10:02 AM #7192
Sorry but I dont remember or have the correct answer to your questions.
I know for sure the racing crankshaft was not the same as production. The racing V8 came out 1981..the production V8 1985 and was a completely different powerhead.
I wish there was a picture of the racing crank. A friend of mine in Sweden is the owner of my first F1-V8 engine and he need a crank. Cant find one.
I am pretty sure when the redesigned racing V8 came out 1985 with the 6 inch mid section and fuel injection the block, pistons, rods, crank, exhaust etc. was more or less the same as the 1984 racing V8. The fuel injection was a must to fit the powerhead on the 6 inch mid section. We the drivers never worked on the powerheads..It was always OMC or later Second Effort.
This is the 3.5 liter powerhead used 1985
1988 was the year when OMC sleeved down the 3.5 liter to 3.0 liter. Lots of rumors what was done and how many RPM they run them.
I was not involved at all and dont have correct info. Well one thing..I dont believe some people saying the run them all the way up to 15.000 RPM..Last edited by lars strom; 08-03-2020 at 10:07 AM.
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08-03-2020, 10:27 AM #7193Screaming And Flying!
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I understand and great info on the years of the V8.
I've been told of some amazing HP and RPM numbers of those engines and I'll believe it because I see the potential in the right hands. It also makes for a better legend.
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08-03-2020, 11:04 AM #71948000 RPM
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08-03-2020, 11:04 AM #7195
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Lake X Kid, FMP liked this post
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08-03-2020, 11:33 AM #7196
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FMP liked this post
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08-03-2020, 12:50 PM #7197Screaming And Flying!
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Lake X Kid liked this post
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08-03-2020, 12:57 PM #71986000 RPM
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Yes & No on Up & Down
OMC was definitely first for electrically pumped up/down lift. Only thing Merc had in 73 was a manually operated (Socket crank speeder) method. It wasn't until sometime after OMCs V8 program was established that Merc came up with their powered lift system (late 80s).Only time a lift system came in handy was when wind and water conditions warranted dropping the engine a bit for rougher water. To my knowledge, neither the OMC or Merc lift systems had mechanical gauge systems (cable?) that would indicate the lift height (approx 1 inch total?).
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Lake X Kid, Instigator liked this post
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08-03-2020, 04:44 PM #7199
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Instigator thanked for this postInstigator liked this post
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08-03-2020, 06:39 PM #7200
I want to "quietly" sell the Johnson RS that has been run on the #754 & Gold Dust Molinari (same hull). I asked Lars if he'd mind me posting it here first before resorting to the various classified medias. The motor is very functional, original, and complete. There are items you will see in the pictures that are not factory, that I chose to use for functionality and reliability. I have all of the OEM parts so these items could be replaced if desired. I will NOT respond to questions on this thread, but request that anyone interested to call me at (423) 452 - 0428 (EST) or, my email: tennesseenavy(at)Gmail(dot)com. Thank you for your interest. Regards, Roger Hinsdale
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lars strom, Instigator thanked for this postpowerabout, lars strom, FMP, Capt.Insane-o, Instigator, H2OPERF, sharpeye Mike, keefallan liked this post
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