Mariner 200 hp 1983 Pitted cylinder

[Michael Bowman]

1983 Mariner 6cyl 200 hp SN 6055336. Can the cylinders be rebored and if so to what oversize?

 

[Laddies]

Re: Mariner 200 hp 1983 Pitted cylinder

Is the cyl scored or pitted, early V6 engines came with pits in the bores, strange but true, in most case the can be replated or sleeve if needed

 

[bigshrimpin]

Re: Mariner 200 hp 1983 Pitted cylinder

Yup - Those chrome bore motors look like they need to go to the dentist and get some fillings. It's normal . . . those motors are great!! That's why it's still alive after 23+ years.

 

[Michael Bowman]

Re: Mariner 200 hp 1983 Pitted cylinder

Originally posted by MBP3:<br /> 1983 Mariner 6cyl 200 hp SN 6055336. Can the cylinders be rebored and if so to what oversize?

Here is some additional information: All cyl compression 120psi, except the one in question - 60 lbs - shows score marks (broken ring?) Is there a procedure to rebuild that cyl - rebore? sleeve? & are oversize pistons or rings available?

 

[phatmanmike]

Re: Mariner 200 hp 1983 Pitted cylinder

yes, yes, and yes. in that order.<br /><br />usually its rebore ths cylinder and install oversized piston and rings. if its really bad, you can have it sleeved.<br /><br />you are not the first to overbore a merc v6.

 

[Laddies]

Re: Mariner 200 hp 1983 Pitted cylinder

By your serial number there are no oversized pistions available except for wisco and the engine will need to be resleeved of replated, you cannot run piston and rings in a alumuiun bore and make it live

 

[phatmanmike]

Re: Mariner 200 hp 1983 Pitted cylinder

go over to screamandfly.com and scroll around for a while. youll see lots n lots of people who sell kits and or parts for rebuilding that thing. if all else fails, ill sell ya a used powerhead