My pump gas 489 build for the old Hondo
+ Reply to Thread
Page 1 of 6 1 2 3 4 ... LastLast
Results 1 to 14 of 79

Thread:
My pump gas 489 build for the old Hondo

  1. #1
    just a ski boat with bark Carnivalride's Avatar
    Join Date
    Jan 2008
    Location
    Derby, Kansas
    Posts
    2,811

    Default My pump gas 489 build for the old Hondo

    Well as some of you know last summer I grenaded my old 467 that had been with me since 1992. Back after. 2004 I raised compression, did some additional porting on the heads and added more cam thinking I was going to go racing again. To make a long story short after building that engine up to run expensive gas I only raced a half dozen outlaw races and never did make a sanctioned 1/4 mile race. So after losing the crank, block, cam, some rods and a couple pistons I was faced with the decision to piece back together my favorite combination to date or to use some parts I had collected for another project and go back to a more easily available and cheaper pump gas engine.

    What I had was a new bare set of AFR 305 heads I had ordered for my old 467, a Velasco 4.25” stroker crank, a set of 18cc dome .030” over SRP pistons I picked up for a screaming deal (for the 4.25” stroke) and a couple of blocks I thought would clean up at .030”. So the debate over compression or cubic inch started, lots of different theories here. In the end it came down to all I had was 6 pistons out of my old build and only cast 4” stroke cranks. I needed rods either way so that was a moot point. So I decided to try the 489 hoping the additional cubic inches would offset the compression loss and the new heads would give me a little more power than I had before.
    So here was the donor block, which was supposed to have been running when it was pulled. I didn’t take pictures of the inside but trust me if it had been running it sat outside uncovered for a few months minimum. Piston rings rusted to the bores and a valve cover full of dirt led me to that assumption. Lol

    The core motor as I got it home, but it was free since I picked it up. Lol


    After 2 cans of oven cleaner and $10 at the high pressure car wash.




    As usual I got a little carried away on clean up and deburring


    Last edited by Carnivalride; 08-28-2012 at 02:32 PM.
    Quote Originally Posted by gn7 View Post
    Carnivalride, you really need to find some other hobby. You have no talent for this boat thing

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    just a ski boat with bark Carnivalride's Avatar
    Join Date
    Jan 2008
    Location
    Derby, Kansas
    Posts
    2,811

    Default Well the stroke wouldn't quite clear

    Well I used a stock piston on one of my new rods with the stroker crank to mach this part up. The oil rail was clearing but off center so I had to even it up and added a bit of clearance with some radiusing. However the rod hit the oil galley and it took some grinding to get the clearance I wanted.

    Some cam galley clearancing



    oil rail clearancing



    rod bolt clearance oil rail


    rod clearance cam galley

    Quote Originally Posted by gn7 View Post
    Carnivalride, you really need to find some other hobby. You have no talent for this boat thing

  4. #3
    Village Idiot fc-Pilot's Avatar
    Join Date
    Jan 2008
    Location
    Peoria, AZ
    Posts
    3,291

    Default

    Oh, you have me all excited. Can't wait to see it each step of the way.

    Paul

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    adjones419 Wet-n-Wild's Avatar
    Join Date
    Jan 2008
    Location
    Shiloh, IL
    Posts
    1,064

    Default

    Nice dog turd in the making you have there, Loren!
    Adam
    Hallett 210

  7. #5
    just a ski boat with bark Carnivalride's Avatar
    Join Date
    Jan 2008
    Location
    Derby, Kansas
    Posts
    2,811

    Default

    Quote Originally Posted by fc-Pilot View Post
    Oh, you have me all excited. Can't wait to see it each step of the way.

    Paul
    Quote Originally Posted by Wet-n-Wild View Post
    Nice dog turd in the making you have there, Loren!
    Thanks Paul & Adam, the thread is actually behind it has been fired and ran. lol
    Quote Originally Posted by gn7 View Post
    Carnivalride, you really need to find some other hobby. You have no talent for this boat thing

  8. #6
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,975

    Default

    Quote Originally Posted by Carnivalride View Post
    Thanks Paul & Adam, the thread is actually behind it has been fired and ran. lol
    Your momma didn't raise no dummy. Never post a build till you know if it works.



    100% free webcam site! | Awesome chicks and it is absolutely free! | Watch free live sex cam - easy as 1-2-3
    Last edited by gn7; 08-28-2012 at 07:47 PM.

  9. #7
    just a ski boat with bark Carnivalride's Avatar
    Join Date
    Jan 2008
    Location
    Derby, Kansas
    Posts
    2,811

    Default Bore notching

    Well after spending so much time deciding on heads, porting them and having them flowed I just couldn’t bring myself to slap them on the round bore. As many of you know the intake portion of an open chambered BBC combustion chamber over hangs the cylinder of a 4.28" bore by a fair amount. After all the flow work I did on my heads the idea of my intake airstream crashing into that ledge bummed me out so once again I got out the layout fluid scribe and grinding tools.

    Close up of one cylinder with bore notches



    One bank done



    And one after initial boring
    Quote Originally Posted by gn7 View Post
    Carnivalride, you really need to find some other hobby. You have no talent for this boat thing

  10. #8
    just a ski boat with bark Carnivalride's Avatar
    Join Date
    Jan 2008
    Location
    Derby, Kansas
    Posts
    2,811

    Default

    Quote Originally Posted by gn7 View Post
    Your momma didn't raise no dummy. Never post a build till you know if it works.
    Thanks Bob. lol
    Quote Originally Posted by gn7 View Post
    Carnivalride, you really need to find some other hobby. You have no talent for this boat thing

  11. #9
    just a ski boat with bark Carnivalride's Avatar
    Join Date
    Jan 2008
    Location
    Derby, Kansas
    Posts
    2,811

    Default A few more

    Here’s a piston

    Checking TDC

    Checking deck height
    Quote Originally Posted by gn7 View Post
    Carnivalride, you really need to find some other hobby. You have no talent for this boat thing

  12. #10
    just a ski boat with bark Carnivalride's Avatar
    Join Date
    Jan 2008
    Location
    Derby, Kansas
    Posts
    2,811

    Default High lights from the heads





    Quote Originally Posted by gn7 View Post
    Carnivalride, you really need to find some other hobby. You have no talent for this boat thing

  13. #11
    Village Idiot fc-Pilot's Avatar
    Join Date
    Jan 2008
    Location
    Peoria, AZ
    Posts
    3,291

    Default

    It's about time you picked this thread up. LOL

    Paul

  14. #12
    just a ski boat with bark Carnivalride's Avatar
    Join Date
    Jan 2008
    Location
    Derby, Kansas
    Posts
    2,811

    Default

    Quote Originally Posted by fc-Pilot View Post
    It's about time you picked this thread up. LOL

    Paul
    Well I wasn't seeing any comments so I didn't think anybody was reading it.
    Quote Originally Posted by gn7 View Post
    Carnivalride, you really need to find some other hobby. You have no talent for this boat thing

  15. #13
    Senior Member
    Join Date
    May 2008
    Posts
    207

    Default

    Quote Originally Posted by Carnivalride View Post
    Well I wasn't seeing any comments so I didn't think anybody was reading it.
    We may be overwhelmed, Its the same as; better to listen and learn. Keep posting, I noticed the clearance for the Intake, have heard it mentioned but always forgotten.
    BB

  16. #14
    Boat Nut sleekcrafter's Avatar
    Join Date
    Dec 2007
    Location
    South Elgin, Il.
    Posts
    5,131

    Default

    Quote Originally Posted by Carnivalride View Post
    Well I wasn't seeing any comments so I didn't think anybody was reading it.
    Nice Work there Loren, hope it serves you well.....
    Upper Midwest Power Boat Association
    DRAG BOAT RACING UMPBA #926


+ Reply to Thread
Page 1 of 6 1 2 3 4 ... LastLast

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in

Tags for this Thread

Digg This Thread

Posting Permissions

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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95