Help with Mercury Outboards - Tilted Forum Project - TFP - Sexuality, Philosophy and Political Discussion

dbeau96 · 08-03-2008, 04:50 PM

I have a 1985 175 Black Max (oil Injected) 2.4L Outboard that has a bad piston. I was told these motors have sleves that can be replace with a new piston, but I don't know it that is the best thing to do. I also don't want to drop 3 grand + for a whole new powerhead. What is the most cost effective and reliable method to take??

Bear Cub · 08-03-2008, 05:44 PM

Nothing at all wrong with sleeving a cylinder. Its done routinely in both factory and high performance motors alike. From a reliability standpoint, a sleeved cylinder is typically the least of worries.

dbeau96 · 08-04-2008, 03:40 PM

what are some other concerns I should know about?? Will the motor still have the same horse power after it has been re-sleeved, and the piston replaced??

Bear Cub · 08-04-2008, 04:03 PM

Assuming it is rebuilt to factory specs, there should be no other issues. Horsepower may increase slightly depending on how worn the rings were originally.

They will simply remove the original cylinder wall material, and install the replacement sleeve. This sleeve is often thicker than the factory cylinder walls, and depending on the material used, can be even more abrasion resistant than the factory cylinder wall or sleeve.

dbeau96 · 08-05-2008, 10:01 AM

thanks for the info, I'll start getting prices today.

08-03-2008, 04:50 PM	#1 (permalink)
dbeau96 Upright Join Date: Aug 2008 Location: S.W. Missouri	Help with Mercury Outboards I have a 1985 175 Black Max (oil Injected) 2.4L Outboard that has a bad piston. I was told these motors have sleves that can be replace with a new piston, but I don't know it that is the best thing to do. I also don't want to drop 3 grand + for a whole new powerhead. What is the most cost effective and reliable method to take??

08-03-2008, 05:44 PM	#2 (permalink)
Bear Cub Bear Bottomed Join Date: Jun 2007 Location: Houston	Nothing at all wrong with sleeving a cylinder. Its done routinely in both factory and high performance motors alike. From a reliability standpoint, a sleeved cylinder is typically the least of worries. __________________ Living in the United Socialist States of America.

08-04-2008, 04:03 PM	#4 (permalink)
Bear Cub Bear Bottomed Join Date: Jun 2007 Location: Houston	Assuming it is rebuilt to factory specs, there should be no other issues. Horsepower may increase slightly depending on how worn the rings were originally. They will simply remove the original cylinder wall material, and install the replacement sleeve. This sleeve is often thicker than the factory cylinder walls, and depending on the material used, can be even more abrasion resistant than the factory cylinder wall or sleeve. __________________ Living in the United Socialist States of America.

08-04-2008, 03:40 PM	#3 (permalink)
dbeau96 Upright Join Date: Aug 2008 Location: S.W. Missouri	what are some other concerns I should know about?? Will the motor still have the same horse power after it has been re-sleeved, and the piston replaced??

08-05-2008, 10:01 AM	#5 (permalink)
dbeau96 Upright Join Date: Aug 2008 Location: S.W. Missouri	thanks for the info, I'll start getting prices today.