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Thread: Bowl Modification Questions

  1. #1
    Hipshot
    I know that it is best to leave full bowl flowing modifications to the pros but I would like to know if there are any minor areas or modifications that could be addressed myself that would improve things? I have been porting cylinder heads and intakes for 17 years and I am a self proclaimed master of the die grinder, so handling the tools isn't a problem. Can anyone give good accurate advice on the areas that should be reshaped/sharpened/material removed etc. etc.? I have both a Berkeley bowl and a Dominator bowl from the late eighties that are in stock form.

  2. #2
    Taylorman
    Whatever you do, get proffesional advice before you do anything. I bought a used split bowl a while back, made my boat drive like shit. I did not know that the bowl was the problem cause i changed the bowl and diverter at the same time. I blamed the diverter till i sent it back to where i bought it from. HTP told me the bowl had been modified by someone who obviously did not know what they were doing. I bought a new bowl and it fixed my problem.

  3. #3
    Hipshot
    I here ya Taylorman that's why I am on here asking.

  4. #4
    sidewound
    I was advised against doing mine myself.
    I saw these posted awhile back. Maybe you can get an idea from them.
    VANES
    http://www.hotboatpics.com/pics/data/500/3371Vanes.gif
    VANE MAGIC
    http://www.hotboatpics.com/pics/data...1VaneMagic.gif
    Peace Man!
    CESAR

  5. #5
    Squirtin Thunder
    How about the front of the bowl ???
    I was advised against doing mine myself.
    I saw these posted awhile back. Maybe you can get an idea from them.
    VANES
    http://www.hotboatpics.com/pics/data/500/3371Vanes.gif
    VANE MAGIC
    http://www.hotboatpics.com/pics/data...1VaneMagic.gif
    Peace Man!
    CESAR

  6. #6
    Hipshot
    Thanks for the pictures. Any idea what kind of bowl that is? It looks like they removed a fair amount of material. I am trying to decide whether or not to approach this like a cylinder head. I don't know much about water flow characteristics though and I am sure that there are things that apply differently when dealing with water flow VS. fuel/air flow. Any other before and after pictures would be cool. Does anyone know of a good physics book that talks about water flow characteristics?

  7. #7
    Unchained
    What I'd seen before didn't look like any rocket science so I took an aluminum cutting carbide burr and sharpened the blunt ends of the vanes myself.

  8. #8
    Hipshot
    Hi unchained, did you work both sides of the vanes or just sharpen from one side? Did you do the entry and exit side of the bowl.

  9. #9
    sidewound
    How about the front of the bowl ???
    I'd like to see some of the front too. I don't have any. Anybody else?
    Peace Man!
    CESAR

  10. #10
    Senior Member
    Join Date
    Apr 2010
    Posts
    6,425
    Hipshot, thats a berk flowed by MPD.
    If your going to do it yourself, use caution you could screw it up in a heartbeat.
    CS

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