1985 Johnson 90hp V4 Cylinder Head

[badenemy]

Hello People Heres My Problem I Have A Johnson 90hp V4 1985 But The Cylinder Head Is Damaged Due To Pistons Ive Replaced Pistons But Cant Get Hold Of A New Cylinder Head But I Have A Cylinder Head Of A Johnson 115hp Will This Do As The Bolts Line Up But The Grooves Are A Bit Different Any Help Would Be Greatfull.

 

[Dhadley]

Re: 1985 Johnson 90hp V4 Cylinder Head

You'll want the heads to be a set. The port head will have a part number 1 lower than the starboard head.

 

[emdsapmgr]

Re: 1985 Johnson 90hp V4 Cylinder Head

The 90 hp engine used 326504 and 505 heads. The 115 that year had the bubble back exhaust, large cabs and higher compression heads (326502 and 503.) When you switch to higher compression heads, you typically need to jet up the high speed jets somewhat so you don't damage that piston. Both of your heads are in stock with Bombardier. Give your local dealer a call.