difference between tldi nissan 40hp and 50hp

duckslayingpro

Seaman Apprentice
Joined
Apr 26, 2005
Messages
36
hello,
i was wondering where the 10hp difference came from these two motors because from what i understood the boreXstroke is the same, cc output, and even the weight so the only thing i could think of is the fuel injection maybe?
Reason being is i am going to be buying a new boat and want the 50hp because it will have a jet unit on it so i can run the local river. But some parts of the river are restrictred to 40hp. so if i can i would rather by a 40hp and bump it to 50 hp. so it will be capped and titled as a 40hp. Also how much would it approximatly cost?
thanks,
duckslayingpro
 

JUSTINTIME

Captain
Joined
Sep 2, 2006
Messages
3,284
Re: difference between tldi nissan 40hp and 50hp

with that jet pump u loose 50% of rated HP
 

duckslayingpro

Seaman Apprentice
Joined
Apr 26, 2005
Messages
36
Re: difference between tldi nissan 40hp and 50hp

yea i know i will lose hp but it is only 30 % and you have to have a jet to run on the rivers around here.
 

TOHATSU GURU

Admiral
Joined
Jul 22, 2004
Messages
6,164
Re: difference between tldi nissan 40hp and 50hp

You do loose somewhere between 50% and 35%, depending on the jet unit, and the difference is the CPU module on the engines.
 

duckslayingpro

Seaman Apprentice
Joined
Apr 26, 2005
Messages
36
Re: difference between tldi nissan 40hp and 50hp

thanks, can my local dealer change the cpu and my the 40hp be putting out 50 hp? thanks
 

TOHATSU GURU

Admiral
Joined
Jul 22, 2004
Messages
6,164
Re: difference between tldi nissan 40hp and 50hp

Yes, but you will lose all warranty and that CPU is around $900.00. You also need to change out the throttle body.
 
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