El cheapo here looking to make a serious engine upgrade - I looked on BWY and it seems the only 70hp Engines they will install is Tohatsu/Nissan or Suzuki well I have been combing the Internet for a Eternity to replace my 96 Yamaha 40hp its a good engine just has over heat alarm over 10knots with full ballast. So I plugged in 70hp Tohatsu on Ebay and what pops up? A 05 with 25 hours on it ending in a day and under $1000.00 Gentlemen I Present to you - The Good the Bad and the Ugly! YES there is a catch!
The Good-
The Bad-
AND THE UGLY-
Yes if I want the engine I have to take the Boat too its around a 65 Lonestar cuddy cabin all aluminum I am thinking its going to the scrap yard after I strip it down. The sad thing is it is somewhat collectable but I dont have a place for it and it has to GO! The Hammer dropped on the Tohatsu and Ugly at $1625.00 So I feel I basically Stole it I have Insurance from the seller and Ebay that this is a Like New Engine with 25 hours on it and in perfect running order - If i find anything wrong with it I can cancel the contract. Has anyone done a 70hp upgrade and do you have any pictures I plan on Aluminum Sandwich Plates (I may cut them out of poor ugly) on the transom and other than that just take it a little easy on the throttle the engines weight is around #330 pounds - Any Thoughts Comments or suggestions are welcome.
I am bringing battery, tank of fuel and muffs when i go for the pic up its about 100 miles away from me and I have a compression tester - I am going to go over it like a eagle scout. When the guy Posts it as LIKE new Engine there is some strict guidelines if you read all the by lines of Ebay TOS - Ebay Motors that is. On another note its really a sad story to the boat the guy was trying to restore it basically make it useful its rated at 75-150 hp. So even with a brand new 70hp it ran like a pig the guy barely used it and then traded it on a car. The Car dealer threw it up on Ebay. What Blows my Mind is even in 05 that was like $6800.00 Engine if not more and used I cant touch it for under $3500.00 if I could find it.
A 70 ought to push that boat fine. Makes me wonder if the guy had the wrong prop or something.
If the boat has a welded hull and no corrosion it's worth more than scrap. If its riveted and has any problems yea I'd say it's worth a few hundred in scrap. If the hull is good, someone could cut the cuddy off and have a nice runabout too. Put it up on eBay for a dollar if you just want to be rid of it.
Ix
Its a riveted hull but there is owners clubs and a small following (idk why IMHO) they are not noted for any particular strong points but are American made
Check with Duane Dunn for some notes on the motor, he installed and is running the same one.
"they are not noted for any particular strong points but are American made" Macs fit this description too Smart buying on your part. It would be a shame to scrap the boat, hopefully someone will fix it up & use it.
Ormondude,
(I have the 2005 90hp Tohatsu and the 70 uses the same method according to the book).
If the engine computer has not been changed, and the stock Tohatsu instrument panel is part of the deal, it is very easy to have the computer tell you exactly what the run time is on the engine.
I'm not sure if somebody could somehow delete or modify that running total if they were a shady crook seller.
The exact specifics of how you start the proceedure and then interpret the tach/lights is something I don't recall off the top of my head because it's in the service manual, but the tach and the three warning lights are used to report the run hours.
You need the book to decode what you see.
It will also do some diagnostics for about 70 issues, as I recall.
( It correctly diagnosed/ reported the #3 cylinder spark plug faulty in my case. Changed that plug- the engine ran better and the code went away).
Pretty cool stuff.
As I recall, the more time you have on the motor, the courser the reading is, eg, 1 to 10 hrs, then 10-100 hours by tens, then 100 to ? by 50 hour reports. That's confusing so try it this way for my case.
With the tach and lights report combo I get, I know my engine has somewhere between 400 to 450 hours. When it changes to the next answer, it will say I have between 450 and 500 hours.
If you have a need for the exact procedure let me know and I will reply with how the book says it's done later today.
I just put on a new 50 Merc. big foot. Cost me $6500 out the door including instalation,cables, Tac. , Trim guage.
I got $900 for my Honda 50 and that including them taking off the motor.
My Honda 50 sold in 1 day on crags list. I could have gotten $1200-1500 but it had small problems.
Bottom line is I have a new 50 hp Merc. and cost after selling Honda was $ 5600 installed.
No woories I hope for next ten years.
Dave
Ormonddude,
I got your PM and I'm standing by for your reply.
For what it's worth, the front cover info on my 2005 service manual is:
Tohatsu Outboard
TLDI
70B - 90B
Service Manual
OB No. 003-21052-1
I bought this manual online a few years ago but don't remember the site.
$30 or so as I recall.
I googled tohatsu parts and found it along with some service parts, water pump, etc.
I do remember downloading the official Tohatsu Parts List from the same site and made a binder of just the 70/90 parts.
It covers the 40B/50B/70B/90B for at least 2005
It's number is OB NO.002-21049-2
Oh and by the way, I'll bet you a cold Pabst Blue Ribbon that it will have the wrong prop on it for the Mac.
Look up the Quicksilver aluminum 14(diameter ) X 11(pitch) (big ears) prop with the correct prop hub.
$120-$130 or so for both.
Save what you have now for emergency back-up only.
You will save alot of grief and time and simply use what works for almost everyone here on their Mac.
Anything other than the correctly sized prop will either drag the rpm's way down or make it hit the rev limiter (but not likely, considering what boat is was on)
Well Ugly is a big heavy none hydrodynamic beer can so it has a pretty nasty prop on it, However the proper Propeller needed is to be expected I am copying down the specs you sent me Thank you very much Crab and everyone for your comments and help.
The Trick I use is I copy and paste good information into a E-mail and send it to myself then save it in a folder for the boat.
Thats a pretty good trick...finding an old boat with a new motor on it for cheap..sounds like someone is taking a hit on it. Fix your current overheating problem (mine was caused by a 2 dollar grommet but the trick was getting the powerhead off) and put that motor on your shark boat and you might even get a new motor for free!
I used to have an early 60's vintage hard top boat (an Aristocraft)..looked like the bat boat, it was pretty cool, had a big V6 evinrude with push button shifter (magnetic coils moved the gears). Of course, this was back in the early 80's so at the time, the boat was only like 20 something years old (like I was too), not 50 something...damn, where does the time go...supposedly, time stands still when you are out sailing....I must have done too much power boating in those days.
Take a look at the mod I did to mount the control for my BF50 at the helm with the handle on the correct side, like what you show in the pic above. Puts the trim button under your thumb, and the lock lever on the outside where it belongs for a right-handed person. I can also actually see the indicator lights now. If you're going to do all that work, might as well make the control more user friendly.
Take a look at the mod I did to mount the control for my BF50 at the helm with the handle on the correct side, like what you show in the pic above. Puts the trim button under your thumb, and the lock lever on the outside where it belongs for a right-handed person. I can also actually see the indicator lights now. If you're going to do all that work, might as well make the control more user friendly.
That is Exactly how I envisioned doing it! and I do believe I will be using your Mod. So basically you had a U-plate fabricated and drilled a cable hole at the front? Thank you
Last edited by Ormonddude on Fri Dec 21, 2012 10:39 am, edited 1 time in total.
