Tohatsu 40 HP TLDI
 

Just bought a 40 HP TLDI. I know with the old carbureted tohatsu 40's you could bump them up to a 50hp. Is there anything you can do with a TLDI 40 to get a little more out of it?

Lake Area marine will do it or if you bought it there it may be done, there is somethin in exhaust they take out. How do you like the motor, I am thinking of getting one next time.

I'd like to know how you like it also, it's next on my list. My 89' 25 merc doesn't push the 16x48 the way I would like.

I'll trade boats with ya.I think you would look good in a pink boat.

Thanks, but I already got a little boat. :D. Now if you just want to see what your motor will do on it, we can make that happen. The 16x48 has a jack plate so we can set it where ever you need. I also have a gps in it so we can see what it will do.

EVO

[QUOTE=PaulMyers;292469]Thanks, but I already got a little boat. :D. Now if you just want to see what your motor will do on it, we can make that happen. The 16x48 has a jack plate so we can set it where ever you need. I also have a gps in it so we can see what it will do.

EVO[/QUOTE

you better of with that 25 Paul, at least it runs and stays at your house more then Jerry's Marine:D

Its very easy to make it into a 50 hp, look at the air intake it has a screen over what looks like a flat washer behind the screen. The guys at Lake Area showed me. Stick a screw driver in it and pop it out. Takes all of 5 seconds. I did it to my brothers motor. Made a big difference. If you go to Lake area walk to the back and ask a mechanic he will show you.

what size boat your brother have it on and how's the hole shot and top end

Awesome. That's what I was hoping for. Basically flipping a switch and getting 10 HP. Thanks.

I know five people from work that have that motor and they all like it. If you buy it from Lake Area they will pop out the restrictor for you, but I think it's fairly easy to do.

who besides Rodney

Chuck Allen, Allan Cooley, Ally Dupre and Harvey Daigle. All of them get barely over 30 with two people and gear except for Rodney.

his is turned to a 50 not sure on theirs

All of them are turned to a 50.

Sent from my Droid using Tapatalk

[quote=weedeater;292475]Isn't past your bedtime?

[quote=1fastmerc;292870]Who me???

Brother has his on a 1842 Southfork with a vented tunnel, troll motor, 2 batteries, ice chest and beer, 2 peps runs great, not sure how fast. I have a 40 merc with 60 carbs, this will be my next motor if they still around when I am ready.

[quote=PaulMyers;292925]Haha. No weedwacker.

Supposedly the new HPDI style Tohatsu they just got is capable of the same thing. There is simply an air restrictor plate in the intake they remove

Does anyone have experience with boyesen reeds in these motors?

I think all that can be done is remove the restrictor. I'm not sure if they have reeds.

Sent from my Droid using Tapatalk

with ya on that, they fuel injected so unless you got a secret then no reeds. I have wondered if exhaust would do anything.

No Reeds, Direct Fuel Injection

I want to try one of these on my 16x48 before I get one. Any takers? :D

EVO

I have an uncle that just got one on a 1648 alweld, I will ask my cousin how it does compared to his 40hp Merc he had on the same size alweld and let you know.

Maybe I'm crazy or something, but no way would I take a 40 tohatsu over a 40 merc. 42 cubic inches won't do what 59 cubic inches will except get better fuel economy.

Sent from my Droid using Tapatalk

been a few yrs since he sold the Merc, Mark Miller has a new 40hp Nissan which is same as the Tohatsu on a 1844 and he says it is more responsive then a 40 Merc that he had on it as far as gettin out the hole

That's what I'm talking about, thanks. My 25 runs 26 on the gps. Just trying to figure out what the 40 should do.

EVO

Paul. What does your Hull weigh? Have a 40 Nissan on a 13"6' whaler and it'll do upper 30's. Played with the prop and got 43 once, but it was insane!! Way to fast!! Boat would go airbourne.......whaler Hull is a little over 300lb

Not sure, I do know it's way more than I want to pick up. :D I really have no clue. It's an Alweld 16x48 with front deck and rear bench.

Then what would they have?

Not sure you need reeds on the new models. Its all electronic....piston closes the exhaust port, and injectors do the rest??? Just a guess

Set-up makes a difference.

I don't know for sure how it works, but I think they have an air pump that pressurizes the fuel, but don't know how it avoids using reeds.

I am no mechanic but I thought all 2 stroke engines, carbureted or fuel injected, had reeds.

Reeds are on carbureted engines but not fuel injected unless someone knows somthing I dont. From best I understand in a nut shell the jets and reeds in a carburetor do the same thing that injectors due on a fuel injected engine, both have their pros and cons. The deal with removing the restrictor on the TLDI is like unrestricting air flow on any engine and from stuff I have read on this new engine it will adjust its self for more air flow and add more fuel due to computer on engine so the next thing to figure out is if you can modify the exhaust in any way to get more out flow.

Ok I did alittle more looking and I have learned somthin new on this, I was looking at 4-stroke setup not 2 stroke. The reed is used to replace the valves found in a 4 stroke, but I think that the deal on the new engine as far as changing reeds is gona be a differnce of old jets vs new has injectors. I am sure someone will find a way to trick cpu and then find a way to open air intake, run bigger injectors and open exhaust but its alittle more involved then the older motor where you just change a few parts and make adjustments with screw driver.

Moron.

o and you know so much on this, why dont you chime in CRUSTY GAS LINE....:cool:

It was not crusty but brittle.

thats why you not supose to use ethonal

If your Alweld 16X48 is the VEE LA model then we have the same hull. Not sure but a guess for a stripped down hull weight would be 450 to 550 lbs.

You're talking serious cash with cpu work and bigger injectors. If you want to hop up a motor a tldi isn't for you. Get a merc 40 or a tohatsu with carbs on it. The days of hopping up new outboards is pretty much over. Buy a new motor, put a tach on it and prop it right and work on the setup. The fuel efficiency a new motor gets should make up for not being able to hop it up.

Where on th motor is this restrictor i have a Nissan 40 that's on a 16x36 wellbuilt an it cruises really good!!! I would like to check this out see what kinda of power i will get....

I would run by Lake Area Marine and talk to a guy in the shop

The restrictor trick doesn't work with all motors correct?......

only ones I have heard of doin this on is the TLDI motors, what motor are you wanting to try something on

It's a 2001 Nissan 40 made buy tahotsua it's a carborated motor there are 3 cylinders on it

different animal, you can change carbs, reeds and exhaust work and get more power pretty easy. I work with a guy that has same motor as yours on a 1648 rebuilt that runs 47ish, the motors we are talkin bout are the new fuel injected TLDI motors.

K i will keep that I'n mine I'm running about 35 maybe 40 buy my self it's pretty legit I'n shallow water also

Old thread I found in a google search engine i want to revive.

I've got a 2010 Tohatsu 50 hp TLDI short shaft tiller handle on a 2011 15x52 alweld Vee La model.
Stock aluminum 11.1x14 aluminum prop on GPS is 39.1 mph.

I'm bringing this thread back to life because i want to know can i yank this restrictor plate out my intake and get more ponies out of my 50 motor? I have tried shining in with a light but like how far into the throttle body does this plate/cone go? is this plate in there loosely once you remove the screen?

Can anyone post a picture what this cone looks like once it is removed??

I plan on this summer getting a better prop, someone I know has a few that will let me try out before i buy. I'd really like to see 50mph but not sure it is possible. There is a guy on youtube and boat racing facts that claims he took a 14ft weldbilt with the 50 TLDI and got it to run 63mph with a low water pickup and a clever 12x23.5 prop I think it was if anyone want to know really how fast these motors are.

Thanks
Chris