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  1. Dartman

    Super Jet HELP--installing new pistons.....sloppy on rod

    the wrist pin bearing length dictates if you use the shims or not use wiseco b1023 pin bearings for without shims
  2. Dartman

    Where to find stainless needle valve plates?

    i would worry more about not having water or moisture in the fuel system
  3. Dartman

    Need help with a 62t cylinder.

    no need to remove sleeves to measure measure from top of deck to top of ports
  4. Dartman

    Need help with a 62t cylinder.

    4.688 is fine on deck height for stock ada domes to work 4.682 would be your limit before custom cutting domes don't go by too much visual on the porting its best to measure them any good porting shop can clean them up to look nicer cylinder honing finish looks worse than the hacked porting to me
  5. Dartman

    Freestyle Pistons clearance

    no less than 0.13 mm with water line restritors to make sure you don't run it too cold
  6. Dartman

    Engine Pressure Test Opinions

    6-8 psi test is fine sounds ok to me if you lost 2 psi in a min thats enough to find the leak
  7. Dartman

    Hull Modification Questions

    rolls are fine, flips are not likely from too much weight without big huge cc hp my stock '08 was 108 lbs bare after reinforcing the sides and handpole mounting area for bad landings added 10 lbs so at 118 lbs just not doable
  8. Dartman

    Carbs at idle: p*ssing fuel?

    always use a 115 gram spring on 38's with 2.0 n&s yes mounts can aggravate this as well i only use oem yamaha mounts
  9. Dartman

    300/440/550 What happens when your pistons guillotine an intake bolt

    my ported miiled head kerker-piped single taperbored 44 carbed 550 on race gas ran 48mph clocked on a stalker gun
  10. Dartman

    Epoxy used when Porting ?

    this has worked really well for gas resistance http://www.zoro.com/i/G1139801/?utm_source=google_shopping&utm_medium=cpc&utm_campaign=Google_Shopping_Feed&gclid=CL-K9pS22MMCFe7m7AodPEEAKA
  11. Dartman

    Carbs at idle: p*ssing fuel?

    did you use popoff springs from the kit or reuse the stock oem ones?
  12. Dartman

    Novi 48mm Carb Dimension

    most later model intake manifolds are 118mm spacing some of the early manifolds from r&d and rivas were 102mm spacing if your talking about the air horn where the filter clamps on are usually the same on aftermarket carbs
  13. Dartman

    NOVI CARB Help

    the plug is a manufacturing access hole from mikuni to drill low speed holes in the opposite side of the bore and done before the throttle assembly is installed
  14. Dartman

    NOVI CARB Help

    your fine as long you have the stock rubber gasket on the fuel pump plate
  15. Dartman

    Tips/Tricks for lining up crank pins?

    just use your cylinder upsidedown to mount the upper case on to assemble, studs way too tall and wobbly
  16. Dartman

    Pipe got too hot...

    i have a set of almost brand new set of OEM pistons/rings/pins if you need a set 81mm less than 5 tanks, went to a 771 big bore w/sleeves
  17. Dartman

    Pipe got too hot...

    you should pull the head and look at the cyl walls ada makes 31, 33, 35 and 37cc for the 701 heads did you have custom ones made at 34? im assuming you have dual cooling? are you running water restrictors?
  18. Dartman

    Pipe got too hot...

    yamaha engine doesn't have to be hot to seize hot pipe and cold cylinder leads to seizure if not jetted on the rich side if it's too cold it will surely seize when jetting is on the leaner side
  19. Dartman

    Pipe got too hot...

    1/2 max closed is the norm should have water injection controller anything under that if you did have a seizure, piston should be replaced
  20. Dartman

    How does this look? 950 8mm

    looks good why the outerwares? fix the water intrusion problems, get rid of them and check jetting will run much better
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