Very, very cool, great project. EGT info would be interesting. Keep up the great work.
Type: Posts; User: Sam La Banco; Keyword(s):
Very, very cool, great project. EGT info would be interesting. Keep up the great work.
Very Cool, some guy's get to have all the fun.
A round pipe would be more effective in calculations, but there no sense making the tuner round after the first part of the exhaust system (in this case, the exhaust manifold) has a different cross...
I think the 60 motor is the worst one, they will run very hot.
The permanent mold blocks are more rigid, the transfer passages are molded much cleaner and the entrances to them are much better shaped for flow. Also the water passages promote better...
The material is ABS. Epoxy will stick to it good if you clean and sand the surface first.
I bet Jerry Gravesen would know, he took over Airmarine from Joe after he passed.
The middle building at Airmarine was full of race motors of all sorts that Joe was experimenting with. many many...
Run as high on the transom as you can without running out of water or control.
The main reason the SST60 class dwindled down, was because the people running the OMC series and race program never pushed the 60 class.
There was vested interests in both "45" and the now dead...
The rods do not need to be replaced, I have never seen a 60 rod break, there was some trouble with the old style bearing cages, but never with the rods.
Go to "Outboard History" section then "Name that Outboard" then page 23
Hey Johnson mod 50,
you need to check out the 31.8 cuber in the History section on Page 22.
The heavy duty clutch dog was released for the 1990 race season, Pt.No. 336446 it may still be obtainable from Seaway Marine.
The production tunner length for the SST-60 is 7.69 inches (195.32mm),...
Solid
Can't remember that guy's name. I also see Warnock, and Palmquist.
I'm in the Hot Rod jacket, Dee is keeling down next to the tower housing, if you look you will see him on the lower left.
What's really interesting about this sequence, is what it says about how much Stock Outboards love this stuff.
The Miss Budweiser unlimited boat was on display at the race about 50 yards from...
Piston Ports are great, but they work best over a narrow RPM band.
In the case of this motor with the combination of both a piston port and large reed area, the intake timing is spread out over a...
One more block photo, Here is what the pistons looked like.
Tim the increase in volume was in the spacing of the manifold in front of the reed plate.
Good Answers Bob AND Tim. Here are a few more pictures of the block.
Tim, even though, now that you know the side carb is piston ported, it still has a few tricky details you can't see.
Also, we found that on dyno, spacing the intake manifold off the c'case a 1/4"...
I remember the party, the rock fish, and the beer, but don't remember the 20H info on the paper plate, hope I didn't mention the crankcase align bore jobs we did, that was suppose to be top secret.
...
Here is a look at the block and a shot of the engine on the boat.
I was in a 20 boat we borrowed from Wayne Walters, if you can see my hand on the throttle, I don't even have it fully closed, and...
The motor was a skunks works project, no class was in mind when Dave did it.
There were a few gear heads around there, he was one of the best.
The small carb was an OMC part. Not sure about the 2...
John
This is the engine that Dave configured back in the early eighties, as far as I know, it's the same as it was back then, it made 50Hp on dyno. If Dave continued to develop it, I'm sure, with...
Tim, your right about the Dykehouse can, it does work like the folded systems found in a modern production motors midsection.
But if you think the Ign. was trick on this motor, the side carb setup...
The coils are production OMC coils firing at the same time.
Hint: the motor was seen at a few Region 7 races.
I don't think you will find a Pt. No. for that one.
Roy,
A few years ago, Evinrude introduced a new engine model, which is as good (actually far better) than what your suggesting.
The 3-cylinder, 79 ci , direct injected 2-stroke, Evinrude...
On an OMC 3 cyl. the amount of clearance set up is all about what you want to do with the motor. If you are going to use it on a real race course
it's all about acceleration, I have won 4 nationals...
What's different about it???
There was not to much thinking of race engines at OMC, and the directive from Strang was that they must be based on production engines.
Other than the race group, there was not much interest in...
Hi John,
The .011 inch per inch figure for a shrink factor for sand cast aluminum was for almost all general purpose Aluminum alloys. The shrink factor for high SIL. content alloys like A-132...
At OMC all engines were protoyped as sand castings, there were different alloys poured for different reasons, but in general the pattern shop used:
.011 inch per inch as the shrink factor...
John, I have no way to scan documents this large, I believe they are about
11" x 17" , "B" size as they say in engineering departments.
All I need is an address to send them to you.
John, as it appears that you are the resident Anzani expert.
I may have something you may be interested in.
I have an envelope sent to Bill Tenney from APBA dated 1954 with factory blue prints...
I think John is right about the water.
The SST 60 motor will burn a head gasket in a heart beat if things are not 100%, we change them after a few races all the time.
As one of those factory engineers, especially the one that designed the 45 race conversion parts, it is cool to see what can become of your work.
How many hours on the lower unit? We used the old...
Hey Detroit Whitey, I used the stock reed cages, I added one more openning in them, there is enough room on one side. Made a fixture to hold the blocks and machined the holes. Modified the crankcase...
There is a great story about when they could not start the rotary motors and the Mikuni guy was there. But thats a story for an other day.
Thanks Bill,
If I can figure out how to do it, I will post some pictures of an intake manifold I designed for the 3 cyl. OMC engines. It was designed to adapt large single barrel pumper carbs of...
Bill, were any of the 56 cuber 2 barrel motors you are talking about able to run strong without the staggered bore 2 barrel set up or extensive mods to the stock exhaust manifold system?
I never...
John if it were me, I would start with the high compression factory head dimensions. Stop development at that point, and measure cc of combustion chamber and squish band dimensions. Run the motor,...
John, sure wish I could get some of that stuff your friend used on his rings.
Actually there is some stuff like that avaiable from Dow Cornning and a few other places, that guy was pretty smart. I...
John
Everyones got there own ideas about break in also as you know, I've tried many ways but went back to a much slower and longer period than I've used in the past.
The reason for the switch...
Hi John,
Just like everything else, there is many ways to skin the cat. Also, their are some pretty smart guy's with a lot of experience writing on this forum about this engine. All I can do is...
Thanks Joe, we keep busy at it.
Doing ok.
Great point SAM, the champ hot rod didn't do to bad of a job either.
By the way, in the mid 60ies there was a 2 cylinder bike with dual rotor valves
that was a rocket for their size. The...
Find a 56 cu. in. short block that was used before the SST 60 engine was released for production. The orginal design for this motor used the "Permenent Mold" method for the block castings. The SST 60...