Johnson 112 SPL

[Kevin-Shearer]

I was told that I could make my 112hp a 140 with some new carbs. Was wondering how true that was. Any discussion would be appreciated.

 

[tashasdaddy]

Re: Johnson 112 SPL

no.

 

[jimmbo]

Re: Johnson 112 SPL

just out of curiousity, what year is your 112?

 

[Kevin-Shearer]

Re: Johnson 112 SPL

Its either a 1995 or '96 - not exactly positive but could find out if critical.

 

[jimmbo]

Re: Johnson 112 SPL

does it have the bubble back exhaust cover or the flat version?

 

[Kevin-Shearer]

Re: Johnson 112 SPL

I'm not positive what you're asking - but I beleive its flat.

 

[jimmbo]

Re: Johnson 112 SPL

If it did have the bubble back it would pretty much be the same engine as the old crankshaft rated crossflow 140hp.

 

[emdsapmgr]

Re: Johnson 112 SPL

The 112 looks like it was a bubble back. In that case, jimmbo's comments are correct. That engine was made as a propshaft-rated 115. Will perform close to the crank rated 140's of the past. The old 135/140s had better heads and the 140's had the intake filler blocks. Your engine should have the good carbs.