Reed Valves '71 125hp Evinrude

[RPJS]

Not realy a problem, I am just finishing a full rebuild on my power head and while cleaning the reed valve assembly I noticed that the valves were marked 140 I am assuming this relates to 140hp, if this is the case I just wanted to know if these valves are OK to use on a 125hp motor, having just fitted new pistons, rings and crank re grind I am very keen to protect my investment.<br /><br />Thanks

 

[Dhadley]

Re: Reed Valves '71 125hp Evinrude

Whose pistons did you use? You say you ground the crank....where did you get bearings?<br /><br />Just curious!

 

[RPJS]

Re: Reed Valves '71 125hp Evinrude

Hi Dhadley<br /><br />The pistons came from an Evinrude dealer in Kent, my understanding is they came from Evinrude, I tryed to find gineric parts but no one seems to make them for this motor and US suppliers were unable to ship to the UK I ended up paying over £100.00 sterling each for them, the needle bearings were a lot simpler, my local bearing supplier had no problem in getting me .001" over sized rollers. The top crank shaft seal was a pain in the butt. I ended up having to machine the housing and fitted a 50x37x6 seal its a fraction tight on the crank but I dont think I'll have any problems. Back to my post do you think that the reed valves are Ok??

 

[Dhadley]

Re: Reed Valves '71 125hp Evinrude

The reed should be fine. Im very curious to know how long the crank will last. <br /><br />Let us know!

 

[RPJS]

Re: Reed Valves '71 125hp Evinrude

Hi Dhadley,<br />Thanks for the reasurance on the valves.<br />As far as the crank goes I hope it will last for a long time,I only had to remove some very slight marks where the rollers had sat still for a long period I took a .001" cut (.002" from the OD) and so the case hardening has not been compromised. I will keep you posted as to how it stands up.