mac 84 rod

[Mike Siriani]

been a long time since I took my mac 84 apart, i just cant remember which way the groove in the rod faces to the drum or to the crank. i dont want to make a mistake, parts are tooo hard to find.

thanks,

mike

 

[John Knight]

been a long time since I took my mac 84 apart, i just cant remember which way the groove in the rod faces to the drum or to the crank. i dont want to make a mistake, parts are tooo hard to find.

thanks,

mike

Mike,

To get more oil to the rod roller bearings, I put the groove towards the intake (front) side. Corrected from my first post.

 

[Don Ferrette]

Groove faces the front on the MACs, came from the man himself.

 

[tnrcboatracer]

Groove faces the front on the MACs, came from the man himself.

Just so everyones understands, what do you mean by front? Do you mean towards the crank, or towards the rotor?

 

[Daniel's Racing]

Groove faces the front on the MACs, came from the man himself.

Just so everyones understands, what do you mean by front? DO you mean towards the ctank, or towards the rotor?

Rotor, carb side. The front of the boat(and engine).

 

[tnrcboatracer]

Actually, the front of the engine is the flywheel side. Hence the NR is a rear exh motor, and the MAC's are front exhaust. That was why I was asking; the front of the engine and the front of the boat are opposite. The front of the engine faces the rear of the boat (except on a gear drive 21 CMB, LOL)

 

[Don Ferrette]

Groove faces the front on the MACs, came from the man himself.

Just so everyones understands, what do you mean by front? Do you mean towards the crank, or towards the rotor?

Sorry I don't fly airplanes, to me the rotor is the front and the collet is the rear.

 

[PakMan]

Groove faces the front on the MACs, came from the man himself.

Just so everyones understands, what do you mean by front? Do you mean towards the crank, or towards the rotor?

Sorry I don't fly airplanes, to me the rotor is the front and the collet is the rear.

Like Don says... towards the lube (intake/drum/carb).... er, the fuel..... and you're right, us old timers call the flywheel end the front end.... where the 'airplane' prop is mounted... Us boaters are a mixed up bunch....

 

[opio]

Groove faces the front on the MACs, came from the man himself.

Just so everyones understands, what do you mean by front? Do you mean towards the crank, or towards the rotor?

Sorry I don't fly airplanes, to me the rotor is the front and the collet is the rear.

Like Don says... towards the lube (intake/drum/carb).... er, the fuel..... and you're right, us old timers call the flywheel end the front end.... where the 'airplane' prop is mounted... Us boaters are a mixed up bunch....

yea try and buy a FWD exhaust when you dont know what ways is up, got lots of wrong parts.. lol

 

[HendricX]

This is a eternal dispute

But seeing a lot of exploded-views with "engine-backplate" there where the carb. is (mostly) ,

and front-bearings for where the flywheel/collet is,

the answer is easy , but as hard to explain as to a Cuban/Afgany/Iraky what is democraty.