| UPDATED; want your cag engine quicker?
****EDIT BY ADMIN****
8) Hi All.... time to make this a sticky, please add any info you can. I will try to go over this thread and pick out all the good bits and keep them near the top. Enjoy!!!
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if you have a stock cag engine and wan't it to go better, try this. these are some mods i have done and the result is worth the effort, exhaust port to be 1mm wider on both sides= total of 2mm total width, top of port to be 2mm higher , make sure you put a slight chamfer to the inner port area after grinding so your piston rings don,t get ruined. the piston can be ground out inside to minimise weight. delete the barrell gasket and use a thin film of high temp blue silicon. while you have the cylinder off the engine its a good time to remove the flywheel. clutch, reed block and undo the 4 bolts in the crankcase then remove those horrible crankcase bearings and seals and replace both with nsk matching brands , this change in bearings / seals will assist your engine in both less friction and longer lasting. when putting the crankcase halves back together add a thin film of silicon to the case gasket for a top seal. before you re fit the flywheel you should try a timing key [ rocket key ] which will advance your ignition timing by around 10 degress, now the stock TIN reeds must go and be replaced with fibreglass reeds. last of all is the stock carby / air filter and a better pipe, the carbs main jet needs to be around 70 to 72 the main needle needs to be raised to 2 clips from the bottom, the stock air filter must be replaced with a good one and the stock pipe must go and be fitted with a fatboy pipe. also you must replace your stock fuel filter with a good type. if you perform these needed mods make sure all is very clean of any metalic fragments and re oil all internal parts before assembly, this will ensure both yourself and your pride of joy [the engine] will be happy and last alot longer than it would have. plus use good 2 stroke oil, 25 to 1 mineral based for run in period of atleast 4 tank fulls then you can go to 40 to 1 synthetic with premium unleaded fuel. [ DON,T OVER REV YOUR ENGINE UNTIL ITS RUN-IN.  | 
