MAC67, Rod Geraghty mod

[tnrcboatracer]

OK, I need to move this motor. Please make an offer if you're interested.

As the description says, I've decided to sell one of my Geraghty modded MAC 67's. This engine is 1 of 2 that Rod reworked the case port runners for reduced case static volume, giving much improved torque and accelleration. These mods sloow the motor to pull a larger prop from hte berach, and pull a heavier scale boat out of the corner. Another side benefit is improved fuel economy. This motor has the short neck .550 carb, bushed drum housing, and ramped rotor. Great compression, bearings are perfect. All screws have been changed to self locking SS. $400 shipped in the USA.

pics here

 

[Bill Gibson]

As the description says, I've decided to sell one of my Geraghty modded MAC 67's. This engine is 1 of 2 that Rod modded for improved accelleration and torque. Has short neck .550 carb, bushed drum housing, and ramped rotor. All screws have been changed to self locking SS. $400 + shipping.
pics here

how much time do you have on the motor? sounds like that kind of mod would work really well in a heavier scale boat.....thanks, Bill

 

[tnrcboatracer]

The mods were made specifically for a scale. Motor has one season on it. The P/S fit is still very good, and the bearings and drun fit are perfect.

 

[shadow]

what are the screws going through both sides of the casing(through the MAC and 67 stamping)?

Cliff

 

[Richard Dahlheimer]

what are the screws going through both sides of the casing(through the MAC and 67 stamping)?
Cliff

Screws are used to secure the plates to the inside of the transfer passages of the case. The plates reduce the crank case volume. Richard D

 

[SayMikey]

what are the screws going through both sides of the casing(through the MAC and 67 stamping)?
Cliff

Screws are used to secure the plates to the inside of the transfer passages of the case. The plates reduce the crank case volume. Richard D

Is this mod from Geraghty? Soon as i saw the screws i thought what the heck is that

 

[tnrcboatracer]

Mike, you have a PM.

 

[tnrcboatracer]

ttt

 

[tnrcboatracer]

Anyone interested in a really sweet MAC67? $400 shipped.

 

[tnrcboatracer]

TTT

 

[tnrcboatracer]

Weekly bump

 

[tnrcboatracer]

Still available. Most torque available in a MAC, better fuel economy, too.

 

[tnrcboatracer]

Lets get this one gone.