Thanks Thanks:  0
Likes Likes:  0
Page 2 of 3 FirstFirst 123 LastLast
Results 11 to 20 of 24

Thread: Tohatsu M70B - how to increase an engine power?

  1. #11
    Banned
    Join Date
    Nov 2016
    Posts
    289
    Post Thanks / Like

    Default

    definitely need a pic of the boat

  2. #12
    Team Member
    Join Date
    Apr 2017
    Posts
    9
    Post Thanks / Like

    Default

    I am from Europe. The race is taken place in the river which goes really very slow.

    The web page of the race is here: www.racecamp.cz

    Pictures of the boat:

    Name:  IMG-20170415-WA0000.jpg
Views: 442
Size:  197.2 KBName:  IMG-20170415-WA0001.jpg
Views: 436
Size:  178.6 KBName:  IMG-20170415-WA0002.jpg
Views: 492
Size:  138.9 KBName:  IMG-20170415-WA0003.jpg
Views: 429
Size:  209.5 KBName:  IMG-20170415-WA0004.jpg
Views: 427
Size:  135.3 KBName:  IMG-20170415-WA0005.jpg
Views: 422
Size:  199.5 KBName:  IMG-20170415-WA0006.jpg
Views: 423
Size:  133.3 KB

  3. #13
    Banned
    Join Date
    Nov 2016
    Posts
    289
    Post Thanks / Like

    Default

    That is a Riever Alpha 100% proper vintage late 1970's styling, and weighs a lot more than you think it does. ...
    the boat alone weighs around 300 kilo, then plus the motor and tank and battery . (unless the floor and bulkheads have been taken out of the hull.)

    to get this boat to 40mph with that motor is pretty good . to go 48mph top end you will suffer big time at pulling away.
    these were not race boats, it is more for recreational fun and water ski-ing.
    these models were made in the 1970's and 1980's, if the brown is original its around 1980 as that was a very popular colour scheme around this time.
    the next model of this boat was slightly more square on the top and windscreen more wrap around , but used the very same well proven hull , they were nice boats.
    if I remember correctly these were rated for about 140hp in the day.

    seen lots of them with 90hp and v4's on the back, even a straight six 135hp merc.

    the race looks like it will be fun.

  4. #14
    Team Member
    Join Date
    Apr 2017
    Posts
    9
    Post Thanks / Like

    Default

    Thank you very much for your inputs and overall information. The point is that I ended second last year and this year I want to win in my category I really need to increase the speed for 3-5km per hour and this would help. Do you think there is no chance with this kind of boat in these conditions?

    Thanks again!

  5. #15
    Team Member fs5's Avatar
    Join Date
    Jun 2008
    Posts
    208
    Post Thanks / Like

    Default

    Mate if it was me, I'd try disconnecting the rev limiter and leave the 15p on.
    See how many more revs it's got in it. Might pick up a mile or 2

  6. #16
    Banned
    Join Date
    Nov 2016
    Posts
    289
    Post Thanks / Like

    Default

    can he disconnect the limiter on that motor ? if so how would he go about it ?

    I thought its like the omc and cant be touched ?

  7. #17
    Team Member fs5's Avatar
    Join Date
    Jun 2008
    Posts
    208
    Post Thanks / Like

    Default

    Dunno mate , pretty easy to disconnect on a 50 .
    Be the first thing I'd look at if I was chasing a couple kph

  8. #18
    Banned
    Join Date
    Nov 2016
    Posts
    289
    Post Thanks / Like

    Default

    it might be easy if you know how.
    But how exactly do you remove the limiter on the 50 ? is this just a simple wire or what ?

    wish i could get the one off my 56 omc.

  9. #19
    Team Member
    Join Date
    Apr 2017
    Posts
    9
    Post Thanks / Like

    Default

    Please can you advise how to disconnect? I am not sure if I can do it as I am not aware how. Thanks!

  10. #20
    Team Member fs5's Avatar
    Join Date
    Jun 2008
    Posts
    208
    Post Thanks / Like

    Default

    They just disconnect a wire on the tohatsu 50.
    You'd be best off asking a tohatsu dealer about the 70 or try googling it

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Prop diameter increase?
    By DuckLn in forum Technical Discussion
    Replies: 10
    Last Post: 11-27-2014, 10:38 AM
  2. Replies: 3
    Last Post: 01-29-2012, 08:23 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •