1978 rude v4 140,powerhead interchange?

xikxak

Petty Officer 1st Class
Joined
Sep 16, 2004
Messages
318
will powerhead from early 70s v4 125 hp or 1975 135 hp fit the above motor? Thanks for info.
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: 1978 rude v4 140,powerhead interchange?

Nope.<br /><br />Any 140 from a 20 or 25" motor 1977.<br />Any 85 or 115 in 1977 from a 25" motor.<br />Any V4 crossflow 1978 and newer.<br /><br />We are talking powerheads here since thats what you asked about. Components (cranks and blocks) are another story.<br /><br />Good luck!
 

xikxak

Petty Officer 1st Class
Joined
Sep 16, 2004
Messages
318
Re: 1978 rude v4 140,powerhead interchange?

hopefully my question was moot.I had 120 lb comp in 3 cylinders,60 in other.Went to dock other day and used deep creep. just checked compression. 120 lb all 4 cylinder. Possible? is this stuff that good? thanks.
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: 1978 rude v4 140,powerhead interchange?

Very possible. Run the motor this weekend and recheck. We hope it works out for you.<br /><br />Good luck!
 
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