9.9

[one eight-w]

First off, what year is the motor?

Secondly, if you are going to spend that much time and money TRYING to make something work, go on ebay and spend $75 and get the one that is for the model year you are looking for. Mid 70's-early 90's will fit many years, and they are interchangable.

You are not being given the best advice trying to finagle one yourself.

[one eight-w]

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TRY EBAY>>>

Item # 300157559057

Item # 200158930593 Looks a bit rusty, I would stay away from this one.

Item # 330170905314

I found the year in another post. All of them would bolt on with NO internal modifications.

[David Mason]

Given the J engine is basically the A Stock rules under a different category, I doybt making your own butterfly would be legal ? Not that it would be a speed advantage if you copied stock specs, just not legal. Kind of like painting the gearbox, you can't.

[one eight-w]

David-
You certainly CAN paint an A or J gearcase. That is how they were recieved from the factory.
From the stock inspection man.

OMC A ENGINE SPECIFICATIONS (CLASS A)
It is the intent of the Stock Outboard Commission that the engine in this class be raced as
received from the manufacturer, without modification. Following is a list of restrictions,
descriptions, and modifications, which apply to this engine.
1. It is permissible to leave the gearcase unpainted (bare Aluminum). Unpainted
gearcases may be polished.

I believe that they are using this motor to play with on an Inflatable, not race. At least that is what I can figure out from the first few posts. I don't think homemade butterflies would pass a Stock inspection.

[jtb]

David-
You certainly CAN paint an A or J gearcase. That is how they were recieved from the factory.
From the stock inspection man.

OMC A ENGINE SPECIFICATIONS (CLASS A)
It is the intent of the Stock Outboard Commission that the engine in this class be raced as
received from the manufacturer, without modification. Following is a list of restrictions,
descriptions, and modifications, which apply to this engine.
1. It is permissible to leave the gearcase unpainted (bare Aluminum). Unpainted
gearcases may be polished.

I believe that they are using this motor to play with on an Inflatable, not race. At least that is what I can figure out from the first few posts. I don't think homemade butterflies would pass a Stock inspection.

stamped # 397635 & 388275 and earlyer sand cast carbs that fit the specs are the only legal carbs

[VINTAGEVECTOR225]

the motor is a 1992,and it is going on a inflatable,it is not going to be raced,what kind of clearance should i look for to cut the head?on my snowmobiels and quad morors i cut them for .60 squish.i found a carb at a local boat shop,and waiting for a pm for one at a better deal.would it be ok to set the timing @ 20degrees

[jtb]

just checked in my shop and I do have a carb you may be interested in P/N 398024
PM me if interested.

JT

[VINTAGEVECTOR225]

i think i found one local,thanks guys for all the info.