Johnson 110 VRO V4 Year?? Ser No??

[MJB]

Anyone know where there is a plate or serial no. on this motor or how I can identify the year??  I'll likely see if anyone is interested in the parts since it is siezed.

[jdupree]

Mike,

Judging by the cover, I think it will be a 1987 or 1988.  My 90HP looked just like that one.  If I am not mistaken, the plate should be on the motor mount not on the leg of the motor.

[RickK]

I agree, mine was a '86 and looked identical. Tag should be on the mount, possibly painted over.

[MJB]

Any idea if the tag would be on the left  or right front or back??

[jdupree]

I think that if you are standing behind the boat looking at the motor it should be on the port (left) side.  It should be right in the middle of the mount.  It should not be hard to find so it might be missing

[jdupree]

Mike,

Have you figured out which is bad - lower unit, power head, or both

[MJB]

jdupree,

I'd say the tag must be missing.  I've looked all over the motor and can't find anything that would resemble serial numbers.

Only the powerhead is siezed, I can spin the prop freely so I think the lower unit is still good.

[JimCt]

A seized power head may not necessarily mean the powerhead's bad.  It all hinges on how the engine seized.  If it threw a rod, or had some other big mechanical "adventure", then it's done.  If, however, the engine's seized from simply sitting, that may be a different story.  If the previous owner used the engine with no problems and shut it down in that condition, very likely there may be just a thin film of rust in the cylinders stopping the parade.

 In the name of science, try spraying a heavy dose of PB Blaster www.blasterchemical.com/store/moreinfo.cfm?Product_ID=1 in each cylinder  and do this every other day for a week.  Try turning the flywheel after a week.  If no luck, using a short block of wood as a cushion give the flywheel gear teeth a few good knocks in either direction of rotation with a dead-blow hammer; don't be shy, wail on it... If luck is with you, you may get it freed-up.  I ran this magic on an old 6hp kicker engine with good results.

[MJB]

JimCt,

Update on the PBBlaster method -- used almost the whole can in the past week or so and still no luck.  Tried the block of wood/hammer method and still does not budge.  I'm going to try one more time this weekend and see what happens.

[JimCt]

Certainly worth the effort.  Good luck!

[gmcjohnny]

instead of hitting the flywheel put a socket on the flywheel nut with a breaker bar an try to free it up that way ,did you take the lower unit off yet i had one where i could spin prop shaft but main shaft going to power head was locked up    on top of one of the heads you might see a small freeze out plug sometimes theres #'s on that if you bring them to a good omc shop they can run the serial # for you      johnny

[Bygracealone]

MJB,

If you look on the engine block, you should find something that looks like a freeze plug.  If you look closely, you'll see some numbers on it.  Write those numbers down and go to this site to decipher the numbers:

http://www.warnersdock.com/Modelyearlookup.htm

[MJB]

I'll look for the freeze plug and the numbers, thanks for the website info.

I had not pulled the lower unit, I'll try that and see if that shaft is what is/was binding.  

Thanks.