NEVER SATISFIED Posted January 20, 2005 Report Posted January 20, 2005 ok so i redid my top end and ported the intake and exhaust a lil on the jugs and went pro light weisco pistons .080 over. no other motor work has been done. i have pro circuit pipes a kn filter and runnin stock gearing. im runnin a 220 main and a stock pilot. my bike doesnt feel any different then before. Quote
PUSH THE THROTTLE Posted January 20, 2005 Report Posted January 20, 2005 Pro Circuits and the K&N should have you closer to 300 on the main what Quote
1800bigk Posted January 20, 2005 Report Posted January 20, 2005 220 sounds a little on the lean side for a full exhaust and k&n. Boring doesnt produce much power gains and niether does a home made port job. Although my buddy has these templates and he ported his own jugs and got some good gains. I forget where got the templates but they have been talked about on here. Quote
bigboybanshee Posted January 20, 2005 Report Posted January 20, 2005 Boring won't require any jetting changes....What bore were you on before you put the .80 pistons in there? Depending on your elevation determines what jets you need to run...Just guessing for your mods your main jet should be anywhere between 270 and 300, pilot can probably stay the same. If you run it much more on 220 mains piped and filtered you're gonna have to re-sleeve those freshly bored cylinders Quote
NEVER SATISFIED Posted January 20, 2005 Author Report Posted January 20, 2005 (edited) <=== im the guy on the right side of the pic gettin beat by a stock yfz 450 on a dune in glamis headed to olds hill... he only had a pipe on it and straight paddles... elevation.. hmm im in fort worth texas... its flat here.. wish i were back home in cali... the cylinders were bone stock before everything else was the same Edited January 20, 2005 by NEVER SATISFIED Quote
NEVER SATISFIED Posted January 20, 2005 Author Report Posted January 20, 2005 220 sounds a little on the lean side for a full exhaust and k&n. Boring doesnt produce much power gains and niether does a home made port job. Although my buddy has these templates and he ported his own jugs and got some good gains. I forget where got the templates but they have been talked about on here. 309385[/snapback] hmmm i'd like to see that templet... i used one but was so minor Quote
ledofthezep Posted January 20, 2005 Report Posted January 20, 2005 I'm running 280's - stock needle with a toomey 2:1 & PC's. Depending on your temp & elevation, you could be right on.? But like BigBoyBanshee said...Boring won't require any jetting changes....nor will you feel massive power gains. Quote
PUSH THE THROTTLE Posted January 20, 2005 Report Posted January 20, 2005 I'm running 280's - stock needle with a toomey 2:1 & PC's. Depending on your temp & elevation, you could be right on.? 309431[/snapback] Fort Worth is 612' Quote
bigboybanshee Posted January 20, 2005 Report Posted January 20, 2005 the cylinders were bone stock before everything else was the same 309411[/snapback] Oh no!! So you took a stock set of cylinders on there first bore and bored them to their last bore? Boring cylinders on a banshee is not the same as boring cylinders on a car. On a car, obviously you do it to gain horsepower. On a banshee, you bore them so you can re-use the cylinders again after compression gets low, once you get to the last bore and wear it out, you have to either have them resleeved or buy another set of cylinders. I'm not trying to be an ass, just making sure you understand what you did....in reality you may have gained a nut hair's worth of HP by boring them out like that. Back to the topic though, if you're at 600' above sea level, I'd start off at 280 if you're running the airbox but if you have the clamp on K&N's then I'd start at 300, maybe 310 on the mains Quote
NEVER SATISFIED Posted January 20, 2005 Author Report Posted January 20, 2005 Oh no!! So you took a stock set of cylinders on there first bore and bored them to their last bore? Boring cylinders on a banshee is not the same as boring cylinders on a car. On a car, obviously you do it to gain horsepower. On a banshee, you bore them so you can re-use the cylinders again after compression gets low, once you get to the last bore and wear it out, you have to either have them resleeved or buy another set of cylinders. I'm not trying to be an ass, just making sure you understand what you did....in reality you may have gained a nut hair's worth of HP by boring them out like that. Back to the topic though, if you're at 600' above sea level, I'd start off at 280 if you're running the airbox but if you have the clamp on K&N's then I'd start at 300, maybe 310 on the mains 309465[/snapback] haha yeah i hear ya... i found that out the hard way.. i was in the process of gettina larger crank but didnt happen... i will try som 300's i know i have a set of those... it wont start to back fire or anything crzy like that will it if the jets are too large? Quote
bigboybanshee Posted January 20, 2005 Report Posted January 20, 2005 It shouldn't, mainly it'll just sputter like a champ when you pin the throttle. If you have clamp on K&N's, 300 should be a great starting point. Quote
NEVER SATISFIED Posted January 20, 2005 Author Report Posted January 20, 2005 It shouldn't, mainly it'll just sputter like a champ when you pin the throttle. If you have clamp on K&N's, 300 should be a great starting point. 309478[/snapback] i am runnin dual kn filters with no box Quote
bigboybanshee Posted January 20, 2005 Report Posted January 20, 2005 You'll be good to go....Let us know how it turns out, I guarantee you'll notice a big difference when you go up from a 220...BIG difference Quote
NEVER SATISFIED Posted January 20, 2005 Author Report Posted January 20, 2005 THANKS FOR EVERYONES HELP AND THOSE WHO POINTED OUT I WAS A DUMB ARSE BORIN WAY TOO MUCH OVER.. HAHA!!.. WELP THIS WEEKEND I GET MY NEW 450YFZ... GOING TO RUN THE SHEE AGAINST IT IN A DRAG SEE WHAT IT CAN DO... Quote
PUSH THE THROTTLE Posted January 20, 2005 Report Posted January 20, 2005 Just make sure you post back how it runs when you re-jet it. I just chalked your .080 up to running your 220 main. Let your banshee drink. Quote
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