Hockey390 Posted March 16, 2004 Report Share Posted March 16, 2004 I just sent my head out to be milled by Boonman, and I want to get everyone oppinion on how far I should get it done. I am running FMF Fatties, K&N with airbox modified, Twist throttle, TORS (still there ), and he is also lightening my flywheel. I run premium gas, and probably will run a higher octane starting this year. Cylinders are on stock bore. Now you have all my info. What do you all think? I do mostly trail riding, and get out to the dunes a few times a year. I probably want faster acceleration then anything, but let me know what you all have had done, and where you noticed it. Quote Link to comment Share on other sites More sharing options...
ledofthezep Posted March 16, 2004 Report Share Posted March 16, 2004 Don't go over .030" Anymore than that you can encounter squish problems. That ought to put you anywhere from 150-160lbs compression, low enough for premium, but won't hurt to run race gas. From my knowledge, anything over 160lbs you'll need a higher octane. I milled mine .030 & did notice some power gains and higher compression. Haven't had any problems at all. No complaints. Fairly cheap mod, good bang for the buck. With the mods you have already, you'll be sit'n pretty. Quote Link to comment Share on other sites More sharing options...
Turbo J Posted March 16, 2004 Report Share Posted March 16, 2004 I need to pick up my engine from the machine shop this week. I had the head milled .020 just to be safe. This is the first rebuild that I have done on my 89, but I am certain it has been done before at least a couple times. The reason I am telling you this is that I had to replace my crank due to excessive rod play at the small end. If you do not know the condition of your crank I would be cautious with adding additional power if the bike is still using the original crank. You stated that you are on the original bore, I would bet those cylinders are new or have been resleeved if that is true on an 87 Banshee. If a crank is needed I think I got a great deal from www.magicracing.com for a Vito's performance crank....Just my cents. Quote Link to comment Share on other sites More sharing options...
brugal Posted March 16, 2004 Report Share Posted March 16, 2004 I just sent my head out to be milled by Boonman, and I want to get everyone oppinion on how far I should get it done. I am running FMF Fatties, K&N with airbox modified, Twist throttle, TORS (still there ), and he is also lightening my flywheel. I run premium gas, and probably will run a higher octane starting this year. Cylinders are on stock bore. Now you have all my info. What do you all think? I do mostly trail riding, and get out to the dunes a few times a year. I probably want faster acceleration then anything, but let me know what you all have had done, and where you noticed it. You should PM BOONMAN hes a pro he can get it write for you.... Quote Link to comment Share on other sites More sharing options...
jeffro189 Posted March 17, 2004 Report Share Posted March 17, 2004 30 thousandths is what i milled mine to. good power gain and more compression. no problems yet, just dont forget to have your crank shaft trued and welded so it doesnt seperate. Quote Link to comment Share on other sites More sharing options...
ledofthezep Posted March 17, 2004 Report Share Posted March 17, 2004 just dont forget to have your crank shaft trued and welded so it doesnt seperate. After over 4 years now, mine's doing just fine. Gunna go knock on wood now... Quote Link to comment Share on other sites More sharing options...
boonman Posted March 17, 2004 Report Share Posted March 17, 2004 You didn't just say that. Did you led??? There goes your crank next time you ride!!!! :flame: Up in smoke. lol!!!!!! That better be some piece of wood!!!! Oh yea, and .030" is a comfy #. You'll like it!! Quote Link to comment Share on other sites More sharing options...
Hockey390 Posted March 23, 2004 Author Report Share Posted March 23, 2004 When re-installing my head, do I need to replace anything? (Seals?) If yes, where is the cheapest place to get them, and what are they called..? Quote Link to comment Share on other sites More sharing options...
nater006 Posted March 23, 2004 Report Share Posted March 23, 2004 Well you'll need a new head gasket, assuming it is a stock head. The Noss and ProDesign Cool Heads use an O-ring seal which is spiffy, but the stocker uses a good ol head gasket to my knowledge. Quote Link to comment Share on other sites More sharing options...
banshee tuner Posted March 24, 2004 Report Share Posted March 24, 2004 You will be safe with 30 thou. cause I had mine done 25 thou. and noticed a lot more bottom end. I can't keep the front end down if I get traction. Quote Link to comment Share on other sites More sharing options...
navy00banshee Posted March 24, 2004 Report Share Posted March 24, 2004 i am thinking of doing this mod. will i need to rejet? i have stock bore, stock carbs tors, running t-5's with the toomey 2to1 filter? who should i send to be milled as well? can i have somebody local do it or should i send it off? i live in the okc area and go to little sahara couple of times a year. Quote Link to comment Share on other sites More sharing options...
Hockey390 Posted March 24, 2004 Author Report Share Posted March 24, 2004 Talk to boonman He does a great job, and does it for a real good price. He also has great turn around time.. He got m ine on a friday and sent it out monday. Many people have had him do their heads and also lighten their flywheels, no one isnt fully satisfied. Quote Link to comment Share on other sites More sharing options...
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