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    Help tuning a V4 85hp

    Hi all been lurking in the forum for a while now so i thought i would take the plunge and ask how i can mod my V4 85. I was going to turn her into a 140 but i was unsure of the outcome but now its ...
  2. Any benefit of drilling holes through the mid section for the exhaust outlets?

    I have seen a few engines with the exhaust gases coming through holes drilled in the mid section.
    Is there any benefit from this ??
    I thought the engine needs back pressure from the exhaust to work...
  3. I dont know about the satin type finish i know...

    I dont know about the satin type finish i know what you mean by it but i would think the mirror like will be best. As smooth as glass almost. How about the intake manifold and the carb throats ?...
  4. Should i add the ccm reeds and stuff the reed...

    Should i add the ccm reeds and stuff the reed blocks before i change the carbs ?
    on the point of reeds is it best to polish the surface of the cadges ?
  5. Both engines are 99.6 cubic inches and use the...

    Both engines are 99.6 cubic inches and use the same pistons, cranks.
  6. I know whats involved in the transformation. I...

    I know whats involved in the transformation. I just want a wee bit more power out of engine just now as i have the stuff ready for the winter strip down and build (which will be documented on here)...
  7. The engine is a 1980 the carbs i think are 78....

    The engine is a 1980 the carbs i think are 78. They have choke plates I will change them to primer.
    I will be putting in some ccm reeds and the Reed stuffers. The guys at ccm said they would work...
  8. Help With Jetting 140 hp carbs for an 85 hp V4 Johnson

    Hi all new to this forum i need some help on jetting 140 carbs to fit a 85hp

    I know that they will fit ( I have to sort out the choke/primer )
    I have been told that they may run rich.
    Which...
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