370banshee

i'm not actauly in michigan but i'm 35 minsutes fomr new buffalo michigan.. i have 3 banshees for sale 89. 97, 98...

i ahve 2 rollers here.. already disassembled and i will ship.. an 89 and a 97

ur from lowell? hell we need to go riding some time.. i'm from kouts..

if interested PM me..

i'll give ya $20 just becaue i can practice a new port layout on them... if they are bored that far out they are JUNK.. and need resleeved..

i'm interested in the motor as well... I'm less than 30 miles from you... lets make a deal and i'll save youi the shipping hassle

same thread on e2s... same answer gear oil in a trail quad.. ATF type F in an override or drag machine.. and change it OFTEN

i can;t beleive i'm sayign this but...... i agree with tyler... take it apart and do it... i can see the shift fork placement on the gear clusters being a pain in the ass.... and really whats it take to pop the top end off of it.... 10 nuts in the head.... 8 for the cylinders..... might take an extra 20 mins... leave the reedcages and intake on the cylinders...

i didn;t have to send my case out for my 1-5 nuetral down duneable either...

and as said before.. traction is a big player as well.. banshees love to bust the tires loose.

it's also a heavier bike... esecially when you figure the wieght bias.. a banshee has a heavier front end than back when compared to something like a blaster, 250R, or 400ex.. those quads all have a rather easy balance point... when you get the hang of banshee wheelies... they are very easy... mine likes to do em in about 3rd gear....

well according to dave noss's website.. for a 20cc dome there is a cahnge of 13PSUI fomr sea level to 1000' so an estimate of 1.3PSI per 100ft woudl be a good ballpark... that accounts for what... 5.2 PSI and i can't see the .006 in milling difference make that much of a differnece.. seriously though... if it rips that way it is i think i;d leave it alone... does it cut out right off idle?

if it;s got stock pipes on it you can bet it's stock internally.. being that pipes are the first step in any engine build up... just dump some premium pump fuel in it.. with a QUALITY premix.. (i prefer amsoil dominator) mix it in the 32:1-40:1 range and you'll be ripping it up in no time with no threat what so ever of top end damage or acceralted wear..

ok with the top of the exhaust port at 27.5mm and with a stock stroke your looking at 192 ex duration.. thats a trail port.. at 800ft with a head cut .030 and the same 192 ex port.. i get 150-155 for compression BEFORE i even start it.. this is also with wiseco or cometic gaskets.. i don't see .006 of the head making that big of a decrease in compression.. actaully i see NO way of that happening.. but we ahve to figure the fact that your at 1200ft and i'm at 800ft... sooo... with the diference in eleveation and lsight variation in the head milling... you might be right bout where you want to be... i'm not sure on the realtion ship of elevation-compression.. as in... how much you lose for every 100ft.. but being that the air is thinner the higher you go... i can see this being a big factor.. i'd lie to see f somebody has a ballpark figure of compression loss over a 100ft elevation change.. but ti seems to me you should be about right.. and your right.. for a play bike a 192 port does RIP

if you have a stock head mill it .030 if you have a col head run a 20cc dome... if you trail port it.. run a 19cc dome..

yeah his 33mm measurement is way off.. but he did say something about going up thorugh the exhaust port to get that measurment..

well being that it's a 100:1 oil then at leat your running it a bit rich... like i said though... 40:1 amsoil dominator is a better choice

yeah a few guys on here have them i beleive...

i am making these figures with 0 deck height for a plate motor.. so my figures must be right then? i'm tto saying i'm right.... i'm asking IF i'm right..

what amsoil premix is that? i know alot of guys run amsoil saber at 80:1.. i'm not a big fan of that being that saber is a chainsaw, weedwacker type oil... if your running dominator at 80:1.. wow thats lean.. and there has got to be exhaust side damage in very few hours.. i'm an amsoil dealer and have played around with the ratios.. the recemmended 50:1 on dominator works well.. until you start raisng the ex port height.. it still works well but i prefer to 40:1 ratio with any ported motor... due to higher cylinder temps from the raised ex duration.. in a 2 stroke engine the exhaust side of the engine gets lubricated last. but it's also the hottest part of the cylinder.. soooooo... in that regard thats the downfall of a 2 stroke engine design... when..... you lean it to much on oil... especially if you run them lean on oil with a PV setup... i know that has nothing to do with this particular situation.. so i guess what i'm saying is... are you running saber or dominator?

yeah mixing premies is not a great idea.. run it out of the masoil mixed fuel then refill with your maxima mixed fuel..

i' doing the figures for a PLATE motor.. i guess thats why we aren't seeing the same numbers. i would say with the tranfer duration he has posted that it's got to be a plate motor..

ok... i'm not trying to fuck up this guys thread but... here what i got.. with the measurement of 33mm deck-top of ex port... with the portmapper on 58mm stroke and std deck height i got 179.6 adn the trasfers at 132 now.. with +2 deck height... i get 187.5 ex..and 141 trans.. and a blow down of 23.25.. which i'm thinking that the first figure is right.. judging by the 132deg transfer duration.. which with a 33 blow down would give a 198 exhaust port duration and a deck-ex top measurement of 132... these figures are from the deck height and not top of piston..

thats why i said "if i entered it right" i might be using this incorreectly.. i do ahve it adjusted for a 58mm stroke.. i figure rod length for this purpose wont; affect it.. i tried it with -2 deck height... maybe i need +2 deck height. i'll try it again.. i know that 179deg is way wrong.. but it was mentioned that 33mm was a wrong mesuerment

i run it all the time in all my machines.. even my pw50 pitbike.. never had a problem with lean conditions.. i have heard that it's oxygenated.. but so is the real expensive race fuel