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  1. #1
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    porting with timing wheel

    Other than porting off deck height measurements Id like to know how to properly port the ports with a degree wheel and timing them correctly. As far as blow down timing separations all the not and gritty. Trying to learn how to do it the right way. Any info and help is appreciated thanks!!

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  3. #2
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    I'd like to have this explained as well. Looked for a little while just now on the topic and haven't found much

    Modded Hydrostream Vking
    Hydrostream Vking
    Hydrostream Viper
    Sold, Hydrostream Vector, Allison xb2002

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  5. #3
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    https://www.screamandfly.com/showthr...ing-for-Torque
    https://www.screamandfly.com/showthr...72-port-timing

    Not really your huckleberry on this one, as I port little, and the wrong way!

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  7. #4
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    I found a guy on youtube this am that works with 2 stroke saws. Hes got some good info for sure. Spectre sent ya a pm

    Modded Hydrostream Vking
    Hydrostream Vking
    Hydrostream Viper
    Sold, Hydrostream Vector, Allison xb2002

  8. #5
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    Which engine
    What hull , weight
    What's the goal?
    Must be a hundred threads to read in the S&F library.

  9. #6
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    For me, im just looking for a general idea on how to measure for a porting job. I think I've found what im looking for between here and various others. More or less general knowledge for what im looking at and where the powers made and taken away.

    Modded Hydrostream Vking
    Hydrostream Vking
    Hydrostream Viper
    Sold, Hydrostream Vector, Allison xb2002

  10. #7
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    Quote Originally Posted by FMP View Post
    Which engine
    What hull , weight
    What's the goal?
    Must be a hundred threads to read in the S&F library.
    200ff 7 pedal front half laser injection 16 amp electrics vst delete. Etc. 20’ vulture 980lb hull weight
    the boats gone 86mph@6300 with 30 promax with a stock porting ff with 4 pedal intake laser and 16 amp electrics. Not bad for a stock ported 200 but it don’t pull after 6300. I wanna be able to run a 28p but turn it harder. Tryna make this school bud go 90 with a 200…

  11. #8
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    you use the timing wheel to find the port height.. you want to put the piston at the top of the port which ever your wanting to raise.. for instance exhaust.. u set piston on the inside. to top of port were it closed set you degree wheel with a pointer any weres move the degree wheel to 0.. now you have your wheel set.. move your piston to the top of the block.. be so use thick plate across the block thats flat bolted down to move the piston to top dead center.. now ur setup move the piston up to the top dead center and count the degrees this is your port height.. so say you moved it from 0 to past 90 to 40 that would be 1.40 port height... now say you want 1.55 raise your piston to till the degree wheel is at 55 degrees .. then scribe the sleeve slightly at top of piston.. to give you a reference point to know were you want it and start cutting.. once done verify and move to the next port height you want on the others...
    Last edited by 265mercman; 09-21-2023 at 02:22 AM.

    2001 american offshore 26 twin 300 promaxs
    2006 hydrostream comp vking horned 225 promax/
    1979 hydrostream vector sold
    1986 23ft twin engine eliminator twin 225 promaxs SOLD

  12. #9
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    Quote Originally Posted by Spectre22 View Post
    200ff 7 pedal front half laser injection 16 amp electrics vst delete. Etc. 20’ vulture 980lb hull weight
    the boats gone 86mph@6300 with 30 promax with a stock porting ff with 4 pedal intake laser and 16 amp electrics. Not bad for a stock ported 200 but it don’t pull after 6300. I wanna be able to run a 28p but turn it harder. Tryna make this school bud go 90 with a 200…
    just curious how much set back are you running? I have one too with a 245 bridgeport and want to go fast. testing this weekend I hope.

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