Can'tFishEnough
Petty Officer 3rd Class
- Joined
- Apr 19, 2011
- Messages
- 86
Not trying to make duplicate posts, but wanted to ask in a different way in this specific J/E outboard part of the forum.
I have a 1979 55hp Evinrude that I want to put on a 1994 16.75 ft aluminum boat rated for 45hp on Coastguard plate. Currently boat is set up as manufactured as a tiller handle control. If I keep it as a tiller handle control, I'd like to be safe and stay in the 45hp area. There are not any laws against overpowering a boat in Texas as long as it doesn't cause obvious handling issues making it unsafe in the eyes of the Game Warden (called Tx Parks and Wildlife to confirm this and that's what the lady told me).
So, I'm not too worried about it being "legal" (since there isn't something here making it illegal) but do want it to be safe. Let's assume buying a 45hp motor isn't an option right now. ( I have been looking for a 40-45 hp tiller for a while and just haven't been able to find one that was able to be titled (something they are picky about in TX) or one that is in running condition that didn't cost near as much as a new one.)
As I stated in my other post, http://forums.iboats.com/forum/boat...t-horse-reduce-horse-power-to-be-within-specs --- I know that asking how to loose HP is probable sacrilegious- around here, but that may be where I am to stay safe.
So my question is what can I do to reduce the horse power at least mathematically to a safe range without knowing the +/- 10% or whatever wiggle room the manufactures are allowed. Also as I understand it the '79 at 55 hp wasn't measured the same way as a '94 45 hp. (and I may be trying to set this one up as a remote steering at some point, but would still like suggestions if you have any incase I can keep it as a tiller).
Guesses would be:
- to retard the timing some? I don't know how much this drops HP per degree of timing.
- to restrict full WOT position - this seems like it is not a good option if motor needs to run at a certain RPM to maintain burning the oil mix or something.
- to restrict airflow at carb gasket or run a little richer? Also doesn't seem like best option for keeping economy or keeping excess oil from building up.
I don't really want to have to try and find different carbs to run it down, but think that may be one of the main difference between the 50 and 55... but I haven't done a total parts list comparison...
Other thoughts, or best thoughts?
Thanks for any help you all can provide.
I have a 1979 55hp Evinrude that I want to put on a 1994 16.75 ft aluminum boat rated for 45hp on Coastguard plate. Currently boat is set up as manufactured as a tiller handle control. If I keep it as a tiller handle control, I'd like to be safe and stay in the 45hp area. There are not any laws against overpowering a boat in Texas as long as it doesn't cause obvious handling issues making it unsafe in the eyes of the Game Warden (called Tx Parks and Wildlife to confirm this and that's what the lady told me).
So, I'm not too worried about it being "legal" (since there isn't something here making it illegal) but do want it to be safe. Let's assume buying a 45hp motor isn't an option right now. ( I have been looking for a 40-45 hp tiller for a while and just haven't been able to find one that was able to be titled (something they are picky about in TX) or one that is in running condition that didn't cost near as much as a new one.)
As I stated in my other post, http://forums.iboats.com/forum/boat...t-horse-reduce-horse-power-to-be-within-specs --- I know that asking how to loose HP is probable sacrilegious- around here, but that may be where I am to stay safe.
So my question is what can I do to reduce the horse power at least mathematically to a safe range without knowing the +/- 10% or whatever wiggle room the manufactures are allowed. Also as I understand it the '79 at 55 hp wasn't measured the same way as a '94 45 hp. (and I may be trying to set this one up as a remote steering at some point, but would still like suggestions if you have any incase I can keep it as a tiller).
Guesses would be:
- to retard the timing some? I don't know how much this drops HP per degree of timing.
- to restrict full WOT position - this seems like it is not a good option if motor needs to run at a certain RPM to maintain burning the oil mix or something.
- to restrict airflow at carb gasket or run a little richer? Also doesn't seem like best option for keeping economy or keeping excess oil from building up.
I don't really want to have to try and find different carbs to run it down, but think that may be one of the main difference between the 50 and 55... but I haven't done a total parts list comparison...
Other thoughts, or best thoughts?
Thanks for any help you all can provide.