Page 62 of 62 FirstFirst ... 1238394041424344454647484950515253545556575859606162
Results 611 to 616 of 616

Thread: Building A looper Beast

  1. #611
    Team Member R Austin's Avatar
    Join Date
    Aug 2005
    Location
    ludington Michigan
    Posts
    266
    Post Thanks / Like

    Default

    Just do not seem to be able to shake the on water issues. Constantine has come and gone and still not able to find the real potential of the Beast.
    Again, out of the pits running on 4 or 5 cylinders, yet running fine on the dyno, mechanically holding up good. Just can not get to fire on all 6 on the boat in the water.

    The engine did go into a full limp mode and did stay that way. Thought that maybe over fueled when backed off into that last turn. So pulled the boat and checked plugs, blew out cylinders and installed new plugs. Dry fired in the pit area and blasted off on all 6 and responded great. No load of course.

    Sunday we put in the water and it would only run on a couple of cylinders and not even begin to plane, limped back to pits and pulled plugs and installed another set. Again, only fire on 2 or 3 cylinders. Pulled out of the water and again pulled and cleaned plugs , checked compression, and all good. Dry fired and blasted right off on all 6 and sounded great.


    https://www.youtube.com/watch?v=DVUYxR7SU-o

    My take at this point is the the low speed winding's are bad. Dry fire just passes right past low winding to high speed. In the water it can not make it to the high speed. Will just do the tests and find the problem. At least now it is down and should be able to find.
    Thanks Mark75H thanked for this post

  2. #612
    Team Member
    Join Date
    Nov 2017
    Posts
    24
    Post Thanks / Like

    Default

    Is spark plug heat range a possible culprit?

    Edit:
    Too cold of a plug can give you fits.

    Rob

    Sent from my SAMSUNG-SM-G900A using Tapatalk

  3. #613
    Team Member Dew1us's Avatar
    Join Date
    Jan 2006
    Location
    Jackson, Mi
    Posts
    86
    Post Thanks / Like

    Default

    I have seen a similar issue like this and the culprit was a kill switch. We unplugged the kill switch and it ran fine.
    - Craig "Dew"
    Flyer Race Boats

  4. #614
    Team Member
    Join Date
    Sep 2008
    Location
    Singapore/Melbourne/Italy
    Posts
    1,171
    Post Thanks / Like

    Default

    when you have a strange problem with a Merc, swap out the stator

  5. #615
    Team Member
    Join Date
    Sep 2008
    Location
    Singapore/Melbourne/Italy
    Posts
    1,171
    Post Thanks / Like

    Default

    Quote Originally Posted by R Austin View Post
    The ratio on the drive is 3 to 1. I know that the pump is made for a normal operating conditions of 2500 RPM at 2500 PSI. I directed by concerns on the speed of the pump and the restrictions of maintaining a solid flow of oil without cavitation to the pump. However I may have gone to far the other way as the trade off on volume is pressure. The 3 to 1 will now translate into high pressure. Hopefully that side of the system can better stand that overload. Time will tell. Again I just want a load that will let tune close enough for final real life on the water tuning. If it can stand it then that will be even better.
    Hi Dick
    ages ago I was trying to find that rotary load cell kit I knew they used on Class 1 offshore boats in europe, not sure who supplied those
    but I found an old Hot rod 2013 and AEMElectronics.com made them for fitting to cars via gearbox yoke.

  6. #616
    Team Member R Austin's Avatar
    Join Date
    Aug 2005
    Location
    ludington Michigan
    Posts
    266
    Post Thanks / Like

    Default

    Well the virus has not got me yet. Sure has got the summer screwed up. Along with all facets of life.
    Constantine antique meet was a couple of weeks ago and did not make that. The engine sets on the dyno where it was placed last August after the Constantine meet last year.

    Had trouble with my right knee last spring and summer with walking. X-rays showed a good joint without excessive wear. After a couple months of monitoring the condition an MRI was finally done and revealed a cracked femur in the knee joint. When I ran the boat in Constantine, I had no trouble kneeling, just walking. So, 3 weeks after Constantine, I had a partial replacement of the knee. Just the end of the femur and the end of the bone in the lower leg the femur mates to. That pretty much took car of the last of the summer.

    I did finally look at the ignition system and did the testing of the stator windings. The low speed windings were way out of spec. Removed the flywheel replaced with a CDI High Performance stator. I also pull the top main bearing out and remachined the stator and trigger mounting surfaces as I needed to open up the clearance between the flywheel and the stator. The block for a ADI system is about 3/16 inch shorter on the top end. I had redone the top main cap upon discovery rather than shorting the block because the engine had been assembled when the problem was realized. The flywheel had touched the stator so the modification was made.

    The fire power of the ignition after the replacement of the stator is absolutely powerful. It spans a 1/2 inch air gap and looks and sounds scary, like it could really hurt you really bad. From the beginning when I first set the ignition system up. It had no where near the gap jumping power it has now. So I think the stator wind has been a problem from the beginning.


    Name:  IMG_1605.PNG
Views: 69
Size:  3.81 MB



    Maybe not a good thing to do but i reinstalled the dual plug heads. I am sure the system has the fire power to make them work. The dual plug heads are also higher compression. 16cc vs 20cc which is a significant number. With fuel injection vs the carbs that these heads were last used with, and the improved dyno performance, I can confirm there performance.

    The photo of the single plug heads, sort of confirms a combustion problem by the coloring of the chambers. 1,3 & 5 are from one system and 2,4 & 6 are from the other system and coloring of the 1,3 & 5 look like a problem existed.


    Name:  IMG_1597.jpg
Views: 69
Size:  141.0 KB



    So much for all that. I hope to run on the dyno in the next few weeks and continue to dial in the ECU. I can do 30 second info down loads for review. 30 seconds does not sound like long until you try holding it.
    Likes Ketzer, Dan M liked this post

Thread Information

Users Browsing this Thread

There are currently 3 users browsing this thread. (0 members and 3 guests)

Similar Threads

  1. Legendary Dub Parker's B Looper found!
    By Original Looper 1 in forum Outboard Racing History
    Replies: 5
    Last Post: 07-07-2010, 05:54 AM
  2. Wanted to Buy: Quincy Looper parts
    By Bob Dunlap in forum Parts and Accessories
    Replies: 2
    Last Post: 06-04-2008, 02:53 PM
  3. Quincy Looper Pictures and Collections
    By Original Looper 1 in forum Outboard Racing History
    Replies: 71
    Last Post: 01-21-2008, 04:26 PM
  4. Waldman F 44 Looper has been found!
    By Original Looper 1 in forum Outboard Racing History
    Replies: 26
    Last Post: 06-18-2007, 09:55 AM
  5. Quincy's 90 ci King Looper Beast
    By Original Looper 1 in forum Outboard Racing History
    Replies: 1
    Last Post: 04-06-2007, 07:08 AM

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
  •