cbn70 Posted February 21, 2010 Report Share Posted February 21, 2010 Hi, I am currently rebuilding a 96 shee. I am putting the engine back together and noticed a mis match between the top cases and the cylinder. Is this normal. Can it be fixed. is it something to worry about. Will I get more power if I match the top case to the cylinder. thanks Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted February 21, 2010 Report Share Posted February 21, 2010 Your refering to the side transfer ports right? Yea you can match that up. That is what is usually refered to as case porting, and is worth a couple of hp on a ported banshee. Be carefull on the flywheel side. It is kind of thin and you can grind a hole right through the cases. Quote Link to comment Share on other sites More sharing options...
cbn70 Posted February 21, 2010 Author Report Share Posted February 21, 2010 do you just angle the top or grind all the way down Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted February 21, 2010 Report Share Posted February 21, 2010 When I did mine I did both. I went in a little ways then angled the top. Lay the gasket on the bottom of the cylinders then trim it. Then lay the gasket on the case and use the gasket as a template. Use a black sharpie marker to mark what needs removed. Quote Link to comment Share on other sites More sharing options...
cbn70 Posted February 21, 2010 Author Report Share Posted February 21, 2010 Well looks like I know what I will be doing tonight. Wish me luck. Hope I don`t make a hole. hahaha. Any one have any pics Hope that I notice a difference in it. Will just be a stock motor, but would be nice to have more. Especially since this will be free power. gotta like that. Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted February 21, 2010 Report Share Posted February 21, 2010 Here is loco's port matched cases that fast done. I didnt go out that far. I just went out a little ways then tapered the top out farther to match the cylinder. You dont want to opean them up to far and make them larger / wider than the cylinder. That will cause the opposite affect where the cylinder is narrower than the top case. That will cause a flat lip to protrude out and is wose for performance than having the cylinders wider than the top case. The air flowing up to the cylinders will catch the flat lip and cause turbulance. Also make sure to use the dowles to locate the gasket on the cylinders for trimming. Then use the dowls on the case half to locate the gaskets for marking. Quote Link to comment Share on other sites More sharing options...
cbn70 Posted February 28, 2010 Author Report Share Posted February 28, 2010 thanks for the help. I did it last night and was easy to do. Now need to finish off putting the engine together and powdercoating the frame and get it all together and then we will see what it does. Quote Link to comment Share on other sites More sharing options...
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