dunner250 Posted December 26, 2009 Report Share Posted December 26, 2009 I currently have a 99 shee with fmf pipes ported jugs no air box milled head and + 4 timing. I noticed my crank has some play in it. So I need to split the cases and get the crank rebuilt. I also just put in a new top end. My questions is what else should I do to it while I have it apart. I was thinking about a 4 mil cub but thats more then I want to spend right now, plus I wanted to pc the frame and get an + 4 to 6 swingarm and still need paddles for it and I have heard you can get a 350 to run pretty good. I wanting to know the best use of my funds. I can't do it all but I was thinking porting the cases, cpi pipes, 35mm carbs, or other? and what gains would I see out of it. I was hoping to get in the 65-70hp range but that could be just a pipe dream. let me know your thoughts. Quote Link to comment Share on other sites More sharing options...
Wildcardracing Posted December 26, 2009 Report Share Posted December 26, 2009 You're going to need to step up to CPI or Shearer pipes and likely some more aggressive porting to get into that range. It will need timing advanced, good reeds and headwork or a good billet head to compliment the porting/pipes. Case porting is also a must to achieve the best possible performance. Carb size will depend on the use, fuel, porting and pipes. While the cases are split you are going to want to have the crank trued and welded to help keep it reliable. What fuel do you plan to run? What are the intended purposes of this bike? What is your weight? And lastly what is your budget for the build? These are questions you will need to answer to put a good motor package "built for you" together. -Brandon Quote Link to comment Share on other sites More sharing options...
dunner250 Posted December 26, 2009 Author Report Share Posted December 26, 2009 I would like to stay pump gas, 180lb, dune/drag. How much gains would I see from porting the cases, and cpi's and are carbs worth the investment? Quote Link to comment Share on other sites More sharing options...
GrMeyer Posted December 28, 2009 Report Share Posted December 28, 2009 I looked into getting my stock crank rebuild about 6 months ago and it was much much cheaper to buy a new crank.. I got a new wiseco crank for $210 shipped. Quote Link to comment Share on other sites More sharing options...
FASTOYS Posted December 28, 2009 Report Share Posted December 28, 2009 Good porting will make all the difference. Better/bigger carbs and a cool head will help too. We have made the HP you are looking for with FMFs so if your on a budget they will work for now. IF you need a crank already i would get with a builder and see what your porting you have now is like and possibly go for the 4mm Play/Dune port. Nice deal on carbs in our Christmas Special! Quote Link to comment Share on other sites More sharing options...
AtvFoxBoy86 Posted December 28, 2009 Report Share Posted December 28, 2009 (edited) I would say go with the 4mill crank and some good carbs. You don't need a cub. If you get a 4mill crank and F.A.S.T to give you a full drag port it will run right next to a cub possibly beat it. Porting the cases will only give you like 2-3 Hp. Edited December 28, 2009 by AtvFoxBoy86 Quote Link to comment Share on other sites More sharing options...
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