My first banshee rebuild any pointers?

[turbowrenchhead]

So I have wanted one since I was 15. I finally come across one that I could afford. I thought I was buying a 92 but it turns out its an 1987. So Its kinda cool to have the first model year. I finally had some time to look at it. The LH side smoked more. I did a compression check and I have 60 psi on the LH side and 100 on the RH. I pulled it all apart and the LH piston ring was busted up and marked up the head and piston. Also the end of the secondary gear shaft is busted on the end and missing the clip. So I need a new shaft. The cylinder bore is at 64.7. So I'm going to pop some 65mm's in it. I like the numara pistons. They have a dome, ceramic coating and they are cast. I know cast are not as strong as forged but cast are less prone to cold seizing. Which I have had happen on 2 cycles in cold weather. My friends blaster is running a numara and its working great.

I looked on ebay and there was a 3.57mm milled head and 4mm milled heads. I would imagine that both of those are way to high of compression for pump gas. I gather that one shouldn't mill it more then .030 or .75mm. The one that was milled 3.57mm said that it would put the compression at 170-180psi. I bet that this is with the exhaust blocked off. Is 170 blocked off close to 125 unblocked exhaust?. I would like to put the compression as high as I can on pump gas. If I run a flat top piston does it free up enough cc's to run a 3.5 milled head?

I read that if you plan on modding the engine then its wise to have your crank trued and welded. Who would be the closest vender to complete this? I'm not sure if there is anyone in the area that can. I read that site venders will do it for $65.

My upper case is busted out from the chain busting. If I clean it up and slap a case saver on it would that suffice? Does it effect case integrity if that material is missing?

I'm going to do a stage 3 port job. Shot for a 165psi blocked exhaust compression. Full FMF exhaust and jet it accordingly. Billet water pump gear and upgraded bearing. I will get the flywheel lightened. I'm guessing that the mains should be somewhere around 325-375 range on stock carbs. I have no idea where I should start the pilots yet. But I have a long time for research. I don't plan on running the banshee this summer. It needs way to much work and $$ that I don't have laying around.

What else should I look for?

[bluebanshee98]

So I have wanted one since I was 15. I finally come across one that I could afford. I thought I was buying a 92 but it turns out its an 1987. So Its kinda cool to have the first model year. I finally had some time to look at it. The LH side smoked more. I did a compression check and I have 60 psi on the LH side and 100 on the RH. I pulled it all apart and the LH piston ring was busted up and marked up the head and piston. Also the end of the secondary gear shaft is busted on the end and missing the clip. So I need a new shaft. The cylinder bore is at 64.7. So I'm going to pop some 65mm's in it. I like the numara pistons. They have a dome, ceramic coating and they are cast. I know cast are not as strong as forged but cast are less prone to cold seizing. Which I have had happen on 2 cycles in cold weather. My friends blaster is running a numara and its working great.

I looked on ebay and there was a 3.57mm milled head and 4mm milled heads. I would imagine that both of those are way to high of compression for pump gas. I gather that one shouldn't mill it more then .030 or .75mm. The one that was milled 3.57mm said that it would put the compression at 170-180psi. I bet that this is with the exhaust blocked off. Is 170 blocked off close to 125 unblocked exhaust?. I would like to put the compression as high as I can on pump gas. If I run a flat top piston does it free up enough cc's to run a 3.5 milled head?

I read that if you plan on modding the engine then its wise to have your crank trued and welded. Who would be the closest vender to complete this? I'm not sure if there is anyone in the area that can. I read that site venders will do it for $65.

My upper case is busted out from the chain busting. If I clean it up and slap a case saver on it would that suffice? Does it effect case integrity if that material is missing?

I'm going to do a stage 3 port job. Shot for a 165psi blocked exhaust compression. Full FMF exhaust and jet it accordingly. Billet water pump gear and upgraded bearing. I will get the flywheel lightened. I'm guessing that the mains should be somewhere around 325-375 range on stock carbs. I have no idea where I should start the pilots yet. But I have a long time for research. I don't plan on running the banshee this summer. It needs way to much work and $$ that I don't have laying around.

What else should I look for?

easy with them main jets bro! i have a 4 mil dune port shee on pods and drag pipes and im running 340 and that might be a lil fat. shouldnt be any higher then 330 on stock carbs with a port job. forget the stage 3 port job. send them to a site sponsor and tell them what you want the bike to do and they will hook you up with a nice port job and they will tell u the jetting. true and weld the crank for sure. pilots will be 27.5

[turbowrenchhead]

Im an auto mechanic and I have done several port jobs on car heads. I have all the tools and I 'm going to do my own port job using racelogic.com templates.