Johnson V-4 need information

[roscottjr]

I have just acquired a Johnson V-4 outboard but I need some information on it such as year, fuel oil mix, compression, where to get parts, and any other information anyone can supply. If anyone has any idea I would also like to know about what type of fuel usage I can expect from this engine. The model number is V4ML-10R and the serial number is J2466921. Any information available would be greatly appreciated. Also I may be looking for a new foot for this one if I find that the engine runs good.<br /><br />Thanks in advance<br />Robert

 

[Droll]

Re: Johnson V-4 need information

V4ml 10s = 90hp (at 4500 rpm) 1964 .<br />Fuelmix = 50:1<br />compression .. no more than 10% difference between cylinders .<br />Displacement = 89.5 cu. in.<br />Bore and stroke =3 3/8" x 2 1/2"<br />Weight =242 lbs ( short shaft , 15" ).<br />Spark plugs = J4j<br />Opening points = .020"<br /><br />Parts:<br />SierraMarine got some (Napa) ,Twincityoutboard.com ,outboard-parts.com <br /><br />Lots of part on Ebay all the time .<br /><br />Arne Kjetil

 

[Droll]

Re: Johnson V-4 need information

Dubbel post

 

[Droll]

Re: Johnson V-4 need information

Dubbel post

 

[roscottjr]

Re: Johnson V-4 need information

Yes it posted twice, dont know why. Anyway, thanks for the information. Is there any difference between the V4ML-10R and the one you listed as V4ML-10S? Mine is the 10R. Just curious.<br /><br />Thanks again<br />Robert

 

[roscottjr]

Re: Johnson V-4 need information

Also, is this engine the straight electric shift type or the hydro electric shift? I believe it is the straight electric but would like to be sure. <br /><br />Thanks<br />Robert

 

[Droll]

Re: Johnson V-4 need information

V4m 10s = 90hp 1964, short shaft.<br />V4ml 10s = 90hp 1964, long shaft.<br />Don't know what the R stand for, some extra option ?? <br /><br />It's a electric shift unit, only use OMC "Type C " or "OMC Premium Blend" ( now Bombardier ) . <br /><br />Some extra info here .

 

[roscottjr]

Re: Johnson V-4 need information

Droll, you are just full of information. I really appreciate it all. I have one that may stump you though. The boat that this motor is on is a Crownline. I cannot find any other information other than that name on the boat. Would you by chance know where I can find the HIN so I can register this boat or did they even have HIN back then? Best I can tell this is the original motor on the boat so I am assumeing the boat is also a 1964 model. Othe than needing a new floorboard the boat is in great shape. I just cant find anything on it as far as weight capacity, person capacity, hp rateing Hin, or anything. It has got me wandering if I will be able to register the boat or not.<br /><br />Thanks<br />Robert

 

[Droll]

Re: Johnson V-4 need information

Sorry don't know anything about your boat, but you might find some info here . <br />Some HIN info here .<br /><br />Arne Kjetil

 

[roscottjr]

Re: Johnson V-4 need information

Great, I will check and see what I can find. I found a lower unit for this boat but it is a 1964 100hp johnson golden meteor lower unit. Mine is a 90hp but will that unit still work on mine?<br /><br />Robert

 

[jimmbo]

Re: Johnson V-4 need information

No such thing as a 1964 100hp.

 

[roscottjr]

Re: Johnson V-4 need information

What is the correct compression range for this engine? Or should I say, what is the range to still safely run the engine before it need a rebuild? I know it is 10% between cylinders but what is the overall range?

Robert