? on A stock engines

[Lights]

Which year 15hp Merc's or legal for ASH/JSH? Also if I am right and go with an OMC it needs to be a 1986 or older correct?

Thanks,
Lights

[kws]

i believe the mercs are newer the omcs are older best advice is goto apba site and check legal block numbers

[Lights]

The stock outboard inspection manual states OMC (Jonnson JKT/Evinrude EKT) 1986 or later. But In the Merc page it said In general the engine shall match Tech Manual for J and AXS which are published in the APBA rule book. Which I can not find on there website. Maybe I just missed it.

[Joe J]

The number on the OMC block needs to be 396780.

Joe

[The MercKid]

In general OMC motors suitable for A are 1986-1992 models.
Merc motors are 1999 and newer models.

Both those are groups of acceptable 15 hp powerheads. Parts from other model years or hosepower ratings be usable but there will be some differences in the total powerhead assembly such as carburetor, exhaust pipe, ignition, flywheel, etc.

[kws]

now you should be confused enuff to start racing ( just kidding everyone)

[Lights]

OK now I am confused. Boy, All I want to do is try and come up with a legal motor. I know a local guy that has a good supply of used 15 OMC's. I'll have him check the block #'s for me. As for the gearcases. I take it the stock OMC gearcase is used on the OMC's. For the Merc's a racing gear case purchased from Ron at Racing Outboards LLC (per the APBA web) is the only legal gearcase? Not the stock one?

I sure I will have More ? for you guys.

Lights

[sam]

OMC's and Mercs both use the racing gear case in A, AXS and J

There was a version of the OMC 15 that came with the racing gear case.

[Lights]

Now I understand the gearcase thing. Thanks Sam.

[Lights]

Anyone now what the going price of these gearcases are? I trying to find out how much it will cost me to put some of these motors together.

Lights

[dholt]

gearcase info

Contact Dean Sutherland with American Hot Rod.

He'll tell you everything you need to know about OMC gearcases.

csh12m@yahoo.com
813-451-9828

[DougMc]

Here is a 1986 OMC on ebay. May be a good deal for someone. Located in Orlando area.

http://cgi.ebay.com/Johnson-9-9-HP-O...QQcmdZViewItem