89sheeman Posted March 31, 2009 Report Share Posted March 31, 2009 im a noob what does a cool head do my banshee is quick but i want it to be a little quicker off the line i have lrd full exhaust and its jetted and has any body heard of banshee conection motors? Quote Link to comment Share on other sites More sharing options...
petie11o5 Posted March 31, 2009 Report Share Posted March 31, 2009 (edited) All a cool head will do is to help your banshee run a little cooler.If you're looking to make it a little faster I think you can get different size domes for the cool heads which makes the compression ratio go up, which can increase performance. Someone please correct me if I'm wrong. Edited March 31, 2009 by petie11o5 Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted March 31, 2009 Report Share Posted March 31, 2009 All a cool head will do is to help your banshee run a little cooler.If you're looking to make it a little faster I think you can get different size domes for the cool heads which makes the compression ratio go up, which can increase performance. Someone please correct me if I'm wrong. A cool head doesnt really make your banshee run cooler. The biggest advantage of running a cool head is the ability to change compression ratio. Upping the compression will give you a stronger midrange. What elevation are you at and what type of fuel do you want to run? If your wanting to run Pump Preimum fuel then you need to shoot for around 150-155 psi of compression. A timing plate is a good mod too. Most people run 150-155 psi of compression with the timing set at +4 deg. The advanced timing also help out the midrange pull. josh Quote Link to comment Share on other sites More sharing options...
89sheeman Posted March 31, 2009 Author Report Share Posted March 31, 2009 (edited) my elevation is 305 ft. and im running 93 octane synthetic mix . my compression 120 both cyl . and the pipes are made for mid range power i can find out the jets if need be. so whats a good coolhead? and timing plate ps this bike is all trail sometimes track Edited March 31, 2009 by 89sheeman Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted March 31, 2009 Report Share Posted March 31, 2009 my elevation is 305 ft. and im running 93 octane synthetic mix . my compression 120 both cyl . and the pipes are made for mid range power i can find out the jets if need be. so whats a good coolhead? and timing plate ps this bike is all trail sometimes track A noss machine head is what I would go with. You dont have to change the cylinder head studs with his. You can get it in 3 anodized colors. Banshee HQ members get 10% off. Acording to noss's web page 21cc domes at sea level will put you at 156psi. It looks like his anodized heads are out of stock. You can get a Noss machine head from FAST that has the FAST logo engraved on it. Same with Herr Jugs, Wild Card Racing. www.farmandsandtoys.com http://www.herrjugsracing.com/ slobanshee06 is who you need to contact for a Wild Card Racing Head. Just PM him. Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted March 31, 2009 Report Share Posted March 31, 2009 Here is the timing plates on ebay. I would spend a little more and get the cheaper billit one instead of the 35 dollar cast plate. Make sure you lock tight the bolts. And set the pickup coil gap. Check the gap with both nodes. http://shop.ebay.com/items/_W0QQ_dmptZMoto...e&_osacat=0 You will aslo need a banshee flywheel puller. http://shop.ebay.com/items/_W0QQ_dmptZMoto...e&_osacat=0 Quote Link to comment Share on other sites More sharing options...
89sheeman Posted April 1, 2009 Author Report Share Posted April 1, 2009 ok ill get this stuff Quote Link to comment Share on other sites More sharing options...
Keyser Soze Posted April 1, 2009 Report Share Posted April 1, 2009 Coolheads are peices of shit..there I said it. Quote Link to comment Share on other sites More sharing options...
shanYE west Posted April 1, 2009 Report Share Posted April 1, 2009 hmm... I think you might be in minority on that one.. I had a cool head and loved it! Wish I didn't have to sell it... Sure.. you can mill down a stock head.. but there is alot more to it then just compression. Once you mill the head down it really should be rechambered. With a stock head your limited on dome configurations. Thats why builders cut their domes from blanks for the aftermarket heads. Quote Link to comment Share on other sites More sharing options...
DBAR Posted April 27, 2009 Report Share Posted April 27, 2009 hmm... I think you might be in minority on that one.. I had a cool head and loved it! Wish I didn't have to sell it... Sure.. you can mill down a stock head.. but there is alot more to it then just compression. Once you mill the head down it really should be rechambered. With a stock head your limited on dome configurations. Thats why builders cut their domes from blanks for the aftermarket heads. I was running 175 to 180 psi on my 88" 250R on 93 octane, so why can't you run the banshee's at that, am I missing something cause I never had any dt's, sometimes i'd run racing fuel 50/50. Maybe ya'll know something I don't, 165 psi should be fine, but thats on a 250 R Honda? Quote Link to comment Share on other sites More sharing options...
elwilliams13 Posted April 27, 2009 Report Share Posted April 27, 2009 Compression ratio is the real indicator for octane requirement. We just use a compression tester because it is easier to do. There is a bunch of threads on here for that topic. The 250r has a lower compression ratio than a banshee. Quote Link to comment Share on other sites More sharing options...
xXBANSHEE_KILLAXx Posted April 27, 2009 Report Share Posted April 27, 2009 A cool head doesnt really make your banshee run cooler. The biggest advantage of running a cool head is the ability to change compression ratio. Upping the compression will give you a stronger midrange. What elevation are you at and what type of fuel do you want to run? If your wanting to run Pump Preimum fuel then you need to shoot for around 150-155 psi of compression. A timing plate is a good mod too. Most people run 150-155 psi of compression with the timing set at +4 deg. The advanced timing also help out the midrange pull. josh ok so i want to get this straight. I get the fact that it increases the compression ratio, but what i wanted to ask is, if i have the original cyclinder with wiseco pistons, will a cool head fit without making any modifications to the head or cyclinders??? And do i really have to change my timing plate if i want to run a cool head?? thanks Cris Quote Link to comment Share on other sites More sharing options...
BSHEE400 Posted April 27, 2009 Report Share Posted April 27, 2009 you don't have to advance the timing to run a coolhead or add compression, but they both increase the mid range. i think they are a direct bolt on to the stock cylinders but i'm not sure because i bolted mine straight to cub cyls. somebody else will let you know for sure Quote Link to comment Share on other sites More sharing options...
DBAR Posted May 4, 2009 Report Share Posted May 4, 2009 Compression ratio is the real indicator for octane requirement. We just use a compression tester because it is easier to do. There is a bunch of threads on here for that topic. The 250r has a lower compression ratio than a banshee. I'm sorry but you're wrong about a TRX250R Honda having a lower stock compression, you need to recheck your facts. I bought mine back in 1988 brand new, over the years i've raced and rode it and worked on it from head to toe. A stock 1988 TRX250R Honda has around 165 to 170 psi cylinder compression straight from the factory. At one time when I had a fresh topend on it I shaved the head .010 or .015 and used the CR250 Honda dirt bike metal head gasket witch was .015 or .020 thinner than the stock paper and metal gasket that was twice as thick or more, can't remember thet exact amount been soo long, so it came out to somewhere around .030 or .035 shaving and the thinner gasket together from the head clearance on my TRX250R and with that combo after a good break in period it had 190 to 195 psi compession, and I used a new snap-on cylinder compression tester at my dads machine shop. After a season or so it dropped back to 170 to 175 psi then I sold it and got my brand new 50th ann. edition Banshee 2006. Last year and it was the last new one in stock in my state so I got lucky. I miss my 250R but I love my new Banshee too. I just have gotten it broken in good cause I haven't had time to ride it, and just put a new set of nickel plated DG head pipes and silencers and it sounds and looks great. I was really surprized how much those pipes woke up that stock banshee after tweaking the jets a little. But there will be more mods to come. Sorry so long of a post...l8t3r guys. :cool: Quote Link to comment Share on other sites More sharing options...
2003LimitedBanshee Posted May 4, 2009 Report Share Posted May 4, 2009 I'm sorry but you're wrong about a TRX250R Honda having a lower stock compression, you need to recheck your facts. I bought mine back in 1988 brand new, over the years i've raced and rode it and worked on it from head to toe. A stock 1988 TRX250R Honda has around 165 to 170 psi cylinder compression straight from the factory. At one time when I had a fresh topend on it I shaved the head .010 or .015 and used the CR250 Honda dirt bike metal head gasket witch was .015 or .020 thinner than the stock paper and metal gasket that was twice as thick or more, can't remember thet exact amount been soo long, so it came out to somewhere around .030 or .035 shaving and the thinner gasket together from the head clearance on my TRX250R and with that combo after a good break in period it had 190 to 195 psi compession, and I used a new snap-on cylinder compression tester at my dads machine shop. After a season or so it dropped back to 170 to 175 psi then I sold it and got my brand new 50th ann. edition Banshee 2006. Last year and it was the last new one in stock in my state so I got lucky. I miss my 250R but I love my new Banshee too. I just have gotten it broken in good cause I haven't had time to ride it, and just put a new set of nickel plated DG head pipes and silencers and it sounds and looks great. I was really surprized how much those pipes woke up that stock banshee after tweaking the jets a little. But there will be more mods to come. Sorry so long of a post...l8t3r guys. :cool: You might get blasted on this one, but I am not a 250R guy so I don't know for sure what they had stock. This is one of the stumbling points amongst many people. Just because it has a higher compression PSI, what your gauge tells you, doesn't necessarily translate into compression ratio. My point is, there is a difference between cylinder pressure and compression ratio. As I said, I don't know what CR 250R's had stock, but if you were to say they have higher cylinder pressures stock, that I could agree with, but they may not have a higher CR than the banshee. Again, I DON'T KNOW WHAT STOCK 250R CR IS, I'm just more trying to illustrate the theory. Another example, my 283 in my 63 Nova had about 220 psi in rough figures from what I recall, but with a CR only in the upper 8's. Point being, I couldn't say I had a higher CR, but I certainly had a higher cylinder pressure. Quote Link to comment Share on other sites More sharing options...
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