miami's_candy_banshee144 Posted April 20, 2009 Report Posted April 20, 2009 what are they?? and whats their benefits? sorry im very knew to this banshee scene and im trying to get as much knowledge as i can Quote
BansheeDan Posted April 20, 2009 Report Posted April 20, 2009 what are they?? and whats their benefits? sorry im very knew to this banshee scene and im trying to get as much knowledge as i can A cool head is an aftermarket cylinder head . Cool heads have interchangeable domes in the head to change compression ratio's. They also offer better cooling in the head itself compared to stock heads. Dan Quote
fastrthnu Posted April 20, 2009 Report Posted April 20, 2009 interchangable domes for variable compression, slightly cooler temp, look alot better. Quote
miami's_candy_banshee144 Posted April 20, 2009 Author Report Posted April 20, 2009 interchangable domes for variable compression, slightly cooler temp, look alot better. so say in the near future when the engine blows, i want to bore it atleast 40 over, which cool head do you guys suggest? and for performance, im guessing they do help? Quote
BansheeDan Posted April 20, 2009 Report Posted April 20, 2009 (edited) so say in the near future when the engine blows, i want to bore it atleast 40 over, which cool head do you guys suggest? and for performance, im guessing they do help? Chariot performance makes a beautiful head at an awesome price,can get chrome or anodized colors. Uses stock cylinder studs(unlike the pro design). And also uses pro design domes which are the most common. As far as dome sizes go,the smaller in cc size of the dome the higher your compression will be. You want to keep in mind that anything over 160 psi of compression will require 110 octane race gas which is pricy (I know this all too well...lol 6 bucks a gallon here). 20 or 21 cc domes depending on your elevation should be safe for 93 octane,anything lower will most likely put you over 160 psi of compression. Dan Edited April 20, 2009 by BansheeDan Quote
miami's_candy_banshee144 Posted April 20, 2009 Author Report Posted April 20, 2009 Chariot performance makes a beautiful head at an awesome price,can get chrome or anodized colors. Uses stock cylinder studs(unlike the pro design). And also uses pro design domes which are the most common. As far as dome sizes go,the smaller in cc size of the dome the higher your compression will be. You want to keep in mind that anything over 160 psi of compression will require 110 octane race gas which is pricy (I know this all too well...lol 6 bucks a gallon here). 20 or 21 cc domes depending on your elevation should be safe for 93 octane,anything lower will most likely put you over 160 psi of compression. Dan ooh... well im right on sea level... so im guessing 20cc domes would be the ideal thing to buy? even with a 40 over big bore kit? Quote
BansheeDan Posted April 20, 2009 Report Posted April 20, 2009 ooh... well im right on sea level... so im guessing 20cc domes would be the ideal thing to buy? even with a 40 over big bore kit? Talk to the person you buy the head from and they can recomend the correct size dome for you. Jerry at Chariot is a great guy to deal with and will point you in the right direction. Being .040 over dosent make it a "big bore" stock cylinders can safely go to .080 over. Big bores usually start at 68mm... I think that a stock sleeved cylinder is 66mm @ .080 over if im wrong on that someone please chime in and correct me. Dan Quote
miami's_candy_banshee144 Posted April 21, 2009 Author Report Posted April 21, 2009 Talk to the person you buy the head from and they can recomend the correct size dome for you. Jerry at Chariot is a great guy to deal with and will point you in the right direction. Being .040 over dosent make it a "big bore" stock cylinders can safely go to .080 over. Big bores usually start at 68mm... I think that a stock sleeved cylinder is 66mm @ .080 over if im wrong on that someone please chime in and correct me. Dan ....so if i go on ebay, and buy myself a .040 over kit, doesnt mean my shee is going to be a 390? im very confused. Quote
BansheeDan Posted April 21, 2009 Report Posted April 21, 2009 ....so if i go on ebay, and buy myself a .040 over kit, doesnt mean my shee is going to be a 390? im very confused. No it will not make it a 390 the 40 over is 40 thousandths of a inch over factory bore. It takes alot more then just .040 over to get you to 390cc. And really the only thing you need to go .040 over is a bore job on your stock cylinders and new pistons. Maybe someone else will chime in here and explain a little better then i did about cc size. Dan Quote
miami's_candy_banshee144 Posted April 21, 2009 Author Report Posted April 21, 2009 No it will not make it a 390 the 40 over is 40 thousandths of a inch over factory bore. It takes alot more then just .040 over to get you to 390cc. And really the only thing you need to go .040 over is a bore job on your stock cylinders and new pistons. Maybe someone else will chime in here and explain a little better then i did about cc size. Dan would any one want to help me figure this outt?? i just want to know what takes to make a shee bore over 10,20,30,40,50 etc... like the numbers exacly and where to buy it Quote
bansheerage Posted April 23, 2009 Report Posted April 23, 2009 you can go to your local yamaha dealer and even they can get you slightly bigger pistons (wiesco) at least i was able too get em. they will give you exact numbers there. but that was just to rebuild my engine when the rings went. you cant bore too much on these cylinders otherwise you have to get different ones like cubs or cheetahs. not too familiar with the bigger bores? try a search on here. everything you possibly could want to know has allready been talked about. try it in different ways also. Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.