kx 500

[stewart]

first i wanted to say that i had read other threads on e2s that could have ben very good but some wanted to fight with others and modertors i feel they create there own problems as i have been treated very nicely by all old or new now about nology coil and wire i like the idea and parts we notice that it made best power at.030 gap feel off at .035 gap and droped off .020 gap with ngk b9es and felt very responsive off idle now that you mention it stewart

[stewart]

looking for input i noticed on my kx bike after 2 hours on dyno or riding the it would develop a misfire under high load but it will great you can put a new b9es plug in same as old and runs great again b9es the old plug looks perfect the fuel i am running is 118 octane and has 6 grams of lead per gallon i read an old air craft book that said they had high and low lead fuels and that they would have to change plugs more often if ahigher lead content was used than a givin comp i dont know if thats what im having happen or my 30 gap is to much for my ignition thanks stewart

[flotek]

i think your going to find that the hotter coil /radical engine mods wil lactually start to erode the electrodes on standard plugs ,to remedy this ,yo u wil l need to run better platinum plugs with superior materials so this doesnt happen and gap it the same .. yo umay want to try a B9EGV and youll see how much better they are ,standard plugs are for standard bikes IMO

[stewart]

hey eviltwin i think that sounds right i have that plug with the 9 heat range and fine wire plat tip i am glad to have a sounding board on this site i read your other input on jetts and pistons etc and we think alike both looking the best setup i will run plat plug this sat with 30 gap and let u know what happens if you get time check storys of lead fouling on av gas with highlead contant thanks stewart

[flotek]

cool ...post up your results

[stewart]

i was visting with a friend a while back that built 2 strokes for go carts that have won national events in 100 cc he gave me some good advice to use marvel mystry oil to cc my chamber at tdc on bike through plug hole it is the right viscoty and does not leak off throu the rings fast i like how it worked on mine he also had me take reed block and put flat up and fill with water and time with watch to see how long to drian water for example 30 second reeds verses 28 second reeds change moter perf and should montered if this type info is of intrest and want more let me know stewart

[flotek]

what is you or your friends ideas o n squish clearance for big bores and small bore engines ?

[stewart]

i am currently running a.011 gasket with a 0 deck on cyl and the head cut with a .037 thou deep step squish is .048 total with 86 mm bore squish angle is less than .5 of degree on squish band this was dennis packerd idea and gianed some power and tourque about 3 hp i think on a smaller bore , barkley the guy that did the 100cc cart s engine s that won was at.30 they say that i was good for cooling of ring lands whats your thoughts stewart

[flotek]

wel l generally i favor the idea that the bigger the bore the wider the squish clearance needs to be .

[stewart]

what effect would it have on top end hp if i made a mid bigger section for my pipe any body tell me how big those are on drag pipes that are not in frames like with and length thanks stewart