Rebuilding Merc. inline six short blocks

monk-monk

Chief Petty Officer
Joined
Aug 27, 2006
Messages
642
Where would one obtain the piston ring compressors that are required to load the reciprocating assembly into the block. I enjoy rebuilding all types of motors and would like to try one of these inlines.
 

Bob_VT

Moderator & Unofficial iBoats Historian
Staff member
Joined
May 19, 2001
Messages
26,097
Re: Rebuilding Merc. inline six short blocks

Do you mean aluminum cans and radiator hose clamps?

That would be the pseudo compressor I would use. You have to be very careful you do not break a ring.
 

steelespike

Supreme Mariner
Joined
Apr 26, 2002
Messages
19,069
Re: Rebuilding Merc. inline six short blocks

Check with the boys at Johns Old Mercury Web Site.
Excellent forum and links.
 

lilmandavis

Chief Petty Officer
Joined
Mar 9, 2006
Messages
618
Re: Rebuilding Merc. inline six short blocks

i did mine one at a time then bring the rods up out of the bore and bolt them to the crank. the bearings can be frustrating but its easier than breaking rings. i didnt have much luck with the cans.
 

AMD Rules

Lieutenant Commander
Joined
Sep 23, 2004
Messages
1,707
Re: Rebuilding Merc. inline six short blocks

The set of ring compressors designed for the job are Mercury specific tools. They do appear on eBay periodically, but seem to be a bit pricey. I've tried the traditional wrap-style compressor, and the home made 'beer can' wrap with zip ties. Neither of those work very well due to the deep cavity you have to work with on these Merc blocks. This is a typical case where the best tool, is the correct tool.

kit2.jpg
 

Clams Canino

Commander
Joined
Jan 10, 2004
Messages
2,179
Re: Rebuilding Merc. inline six short blocks

I insert them one at a time and bolt them up. Guaranteed not to break anything.

-W
 
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