craptorkiller Posted November 11, 2008 Author Report Posted November 11, 2008 Did you check your ring gap when you put it together? Check to see what your squish is also. Where at in Missouri are you? ring gap is correct. i live in joplin. im new to banshees. what is squish? Quote
craptorkiller Posted November 11, 2008 Author Report Posted November 11, 2008 135???!!!! that motor should be upwards of 180 to 190 with 17cc domes.. something is not right. i would try another tester. i just tried another tester. i held the trottle open and it was still about 135. would reeds have anything to do with it? Quote
Wildcardracing Posted November 11, 2008 Report Posted November 11, 2008 i just tried another tester. i held the trottle open and it was still about 135. would reeds have anything to do with it? Yes, your reeds can affect your compression. If they are not sealing, some of the intake charge will be forced back throught the carburetor instead of up into the cylinder. Quote
craptorkiller Posted November 11, 2008 Author Report Posted November 11, 2008 Yes, your reeds can affect your compression. If they are not sealing, some of the intake charge will be forced back throught the carburetor instead of up into the cylinder. ok. im wondering if that might be the problem. its the only thing i can think of. both testers read pretty darn close to the same. if thats not it, im not sure what else it could be? Quote
Wildcardracing Posted November 11, 2008 Report Posted November 11, 2008 ok. im wondering if that might be the problem. its the only thing i can think of. both testers read pretty darn close to the same. if thats not it, im not sure what else it could be? You are kicking it till the needle doesn't move at all? If that's the case and your reeds are ok, then I'm afraid it's something internal. Quote
craptorkiller Posted November 11, 2008 Author Report Posted November 11, 2008 You are kicking it till the needle doesn't move at all? If that's the case and your reeds are ok, then I'm afraid it's something internal. the only thing internal i could think of. is if the rings haven't proerly seated? but i dont think it would make 30+ psi difference. Quote
craptorkiller Posted November 11, 2008 Author Report Posted November 11, 2008 What's your elevation? around 800 ft give or take Quote
craptorkiller Posted November 11, 2008 Author Report Posted November 11, 2008 could a leaking gasket cause that much of a drop in psi? Quote
dajogejr Posted November 11, 2008 Report Posted November 11, 2008 Pull your reeds and check them...but to get exactly 135 in each cylinder tells me your reeds would have to be as bad as each other....rare. Do a squish test. Take a piece of solder (I use the resin core) in a shape of an L, stick it down the spark plug hole towards the left or right side of the cylinder (NOT front or back) and using your hand, kick the bike over once. It will smash the solder, get a micrometer, measure how much the solder is "Squished"... Report back. I use .095 resin core solder... Quote
craptorkiller Posted November 12, 2008 Author Report Posted November 12, 2008 Pull your reeds and check them...but to get exactly 135 in each cylinder tells me your reeds would have to be as bad as each other....rare. Do a squish test. Take a piece of solder (I use the resin core) in a shape of an L, stick it down the spark plug hole towards the left or right side of the cylinder (NOT front or back) and using your hand, kick the bike over once. It will smash the solder, get a micrometer, measure how much the solder is "Squished"... Report back. I use .095 resin core solder... it will be tomorrow before i get a chance to do this. i will let you know when done. what does the squish measure? Quote
dajogejr Posted November 12, 2008 Report Posted November 12, 2008 it will be tomorrow before i get a chance to do this. i will let you know when done. what does the squish measure? How close the piston comes to the band, too close, BOOM...too loose (which may or may not be your case) and it'll have crap performance. Quote
dirtfreak Posted November 12, 2008 Report Posted November 12, 2008 you say fresh top end,did you bore it or just rering it. Quote
craptorkiller Posted November 13, 2008 Author Report Posted November 13, 2008 you say fresh top end,did you bore it or just rering it. had it bored and put brand new pro-lites in it. Quote
craptorkiller Posted November 13, 2008 Author Report Posted November 13, 2008 How close the piston comes to the band, too close, BOOM...too loose (which may or may not be your case) and it'll have crap performance. i just did the squish test and it the solder measured .055in Quote
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