User Tag List

Page 2 of 3 FirstFirst 1 2 3 LastLast
Results 16 to 30 of 38
  1. #16
    Join Date
    Oct 2019
    Location
    Germany
    Posts
    16
    Thanks (Given)
    7
    Thanks (Received)
    1
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Okay, next weekend I will measure my combustion chamber depth, and make my mind up about shaving the head to SST60 spec.
    The thread on BRF is indeed very helpful. Really makes me think I don't want to miss out on the extra hp I get from high compression.
    Also very interesting with the etec reed-cages. Has anybody experience with making them work on the 56ci?
    Otherwise I will just cut my stock cages some, hopefully that works out well.

    Regarding the timing, if I got that right, my max timing won't affect my idle timing, correct?
    For those of you that run a tight head on your engines, did that affect idle in a bad way?

    My order at CCMS is going out next week, is the CDI's rpm limiter at 6700 rpm alright for my application?

    Thank you!

  2. #17
    Join Date
    Jun 2007
    Location
    Singapore/Melbourne/Italy
    Posts
    9,096
    Thanks (Given)
    1008
    Thanks (Received)
    354
    Likes (Given)
    4296
    Likes (Received)
    1950
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    I dont think there is an e-tec cage that fits a carby 3 cyl

  3. #18
    Join Date
    Oct 2019
    Location
    Germany
    Posts
    16
    Thanks (Given)
    7
    Thanks (Received)
    1
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Yeah I wouldn't think they would fit. Anyways, if you Google BRF-56ci OMC realistic power, you will find some info on it. Starts at page 2.
    It might need a custom adapter though.

  4. #19
    Join Date
    Jun 2007
    Location
    Singapore/Melbourne/Italy
    Posts
    9,096
    Thanks (Given)
    1008
    Thanks (Received)
    354
    Likes (Given)
    4296
    Likes (Received)
    1950
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by clubmate777 View Post
    Yeah I wouldn't think they would fit. Anyways, if you Google BRF-56ci OMC realistic power, you will find some info on it. Starts at page 2.
    It might need a custom adapter though.
    3 cyl carby reeds are 3 over 3 the smallest e-tec are 4 over 4 in a 60 vee engine, they are too wide for the crankcase

  5. #20
    Join Date
    Sep 2006
    Location
    Key Largo, Fl
    Posts
    3,274
    Thanks (Given)
    8
    Thanks (Received)
    215
    Likes (Given)
    30
    Likes (Received)
    585
    Mentioned
    1 Post(s)
    Tagged
    1 Thread(s)
    Not true the small 25 30 35 hp etec uses a 3petal cage that bolts right in to the 60 70 omc.

  6. Likes Capt.Insane-o, powerabout liked this post
  7. #21
    Join Date
    Jun 2007
    Location
    Singapore/Melbourne/Italy
    Posts
    9,096
    Thanks (Given)
    1008
    Thanks (Received)
    354
    Likes (Given)
    4296
    Likes (Received)
    1950
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by ChrisCarsonMarine View Post
    Not true the small 25 30 35 hp etec uses a 3petal cage that bolts right in to the 60 70 omc.
    thanks Chris, I didnt know that, can you post a photo?

  8. #22
    Join Date
    Oct 2019
    Location
    Germany
    Posts
    16
    Thanks (Given)
    7
    Thanks (Received)
    1
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Yes, thats what I read at BRF too. So if we were to compare the etec cages to stock, or opened up stock cages, which one would be the one to have?
    I also read that a reed area can be too big. I wonder where the line is, especially on this OMC.

    Thanks for the input!

  9. #23
    Join Date
    Jun 2007
    Location
    Singapore/Melbourne/Italy
    Posts
    9,096
    Thanks (Given)
    1008
    Thanks (Received)
    354
    Likes (Given)
    4296
    Likes (Received)
    1950
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by clubmate777 View Post
    Yes, thats what I read at BRF too. So if we were to compare the etec cages to stock, or opened up stock cages, which one would be the one to have?
    I also read that a reed area can be too big. I wonder where the line is, especially on this OMC.

    Thanks for the input!
    Too big and squared off is generally an issue that creates poor idle.
    A 3 cyl can certainly do with more read area.
    Chris Carson is your man for all that

  10. #24
    Join Date
    Oct 2019
    Location
    Germany
    Posts
    16
    Thanks (Given)
    7
    Thanks (Received)
    1
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks powerabout, looking forward to hear from Chris!

  11. #25
    Join Date
    Oct 2019
    Location
    Germany
    Posts
    16
    Thanks (Given)
    7
    Thanks (Received)
    1
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Here is a little update:

    Reeds: CCMS reeds are on their way. I decided to go with porting my old cages. As far as I understood Chris the reeds will be bigger than steel leafs, so that I can port the cahes and still have enough overlap. Will post pictures when I start.

    Cylinder head: Merc 2.5 stated that my WSM pistons will be good enough for going a little higher, so the plan will be to shave the head to sst60 specs.
    I measured my pocket depth, which is approximately 15,85mm or 0,64in. Does that sound about right?
    Now the question is how much to take off? I couldn't find the spec unfortunately.

    Also another thought, would it be worth considering tho thermal coat the pistons tops? Not sure how much the cost would be, but I'm wondering if this application would benefit?

    Thank you for your help!

  12. #26
    Join Date
    Oct 2019
    Location
    Germany
    Posts
    16
    Thanks (Given)
    7
    Thanks (Received)
    1
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Just a little bump for the thread
    Can anybody help me with the cylinder head spec?
    Merry Christmans and a soon a happy new year,
    Leo

  13. #27
    Join Date
    Apr 2001
    Location
    Michigan
    Posts
    15,422
    Thanks (Given)
    214
    Thanks (Received)
    475
    Likes (Given)
    7697
    Likes (Received)
    4259
    Mentioned
    1 Post(s)
    Tagged
    1 Thread(s)
    Look up sst 60 spec sheet

  14. #28
    Join Date
    Oct 2019
    Location
    Germany
    Posts
    16
    Thanks (Given)
    7
    Thanks (Received)
    1
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Got it! So if my measurements are correct i have to shave of about .2 inches.
    I will malso measure the thermostat area to make sure I ont get thinner than 3mm there.
    At least thats what I read at HPBC. Can someone confirm?
    Thank you!

  15. #29
    Join Date
    Oct 2011
    Location
    Ontario
    Posts
    369
    Thanks (Given)
    32
    Thanks (Received)
    46
    Likes (Given)
    335
    Likes (Received)
    134
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    You do realize that once you boost your compression to SST 60 specs. that you will need to run it on 100 octane, right? I would keep the compression down to 150 to 160.
    All that motor needs is to clean up the ports a bit and shave the head 0.060 off. If you were bolting this to a small light race boat than go all out, but in your case I would leave it like what I mentioned first.

  16. Thanks clubmate777 thanked for this post
  17. #30
    Join Date
    Oct 2019
    Location
    Germany
    Posts
    16
    Thanks (Given)
    7
    Thanks (Received)
    1
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Found some time last week and did some work on the motor
    Removed all the old paint and put a new coat on, also did the portmatching as far as I dared to.
    The (I think) boost ports were by far the worst! Can I expect noticeable gains by making them wider?
    So far I didn't really grind on the sleeves and just removed aluminum, so that the air could use all the port area.
    I don't want to go crazy with the ports as I fear ruining the block with all the time and money in it already.
    I also removed the casting flash in the crankcase.

    Yesterday I opened up the first reed-cage. More could be had on the bridges, but I'm not sure if that's necessary?
    Please let me know what you think before I go out and ruin all three haha...

    The block is planed and the Cylinder head is currently at the machine shop were (as sharpeye Mike suggested) 0.060 are taken off.
    It should be back next week.

    Will have to do the piston mod and clean all the parts. I wonder how to get all the shavings out of the ports? Tried scrubbing with a plastic brush
    and hitting it with the hose, which took out most of the grime. Not sure about the hard to reach spots. How do you guys go about it?

    Thanks for your input!
    Attached Thumbnails Attached Thumbnails 20200312_210822.jpg   20200312_210914.jpg   20200307_150113.jpg  

Page 2 of 3 FirstFirst 1 2 3 LastLast

Similar Threads

  1. "Sum Ting Wong," "Wi Tu Lo," "Ho Lee Fuk" and "Bang Ding Ow"
    By STVmod in forum The Scream And Fly Lounge
    Replies: 9
    Last Post: 07-15-2013, 09:34 PM
  2. Building the new "MAN CAVE"
    By WILDMAN in forum The Scream And Fly Lounge
    Replies: 47
    Last Post: 05-27-2011, 09:23 AM
  3. 98 225 promax, any extra "easy" hp out there?
    By kct11 in forum Technical Discussion
    Replies: 3
    Last Post: 11-24-2007, 07:18 PM
  4. Building the "cradle" now to support the 'stream...core is next.
    By WATERWINGS in forum Fiberglass and Composites Discussion
    Replies: 203
    Last Post: 08-04-2005, 11:17 AM
  5. okay, if i have an extra 6"s, how much more should i be able to pick up?
    By mr fun in forum General Boating Discussion
    Replies: 46
    Last Post: 05-16-2002, 07:55 AM

Tags for this Thread

Posting Permissions

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