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diameter is approximately 5/16", roughly hogged out, yet to be gone over with high grit stones.

do you have a port map or any recommendations on port dimensions

i would be more concerned of snagging the piston , that intake insane

about 30 minutes into the ride i was 6th gear WOT on a flat farm road. the engine did not seem to want to rev out all the way as if it was under too mush load or as if i shifted way too early . about 8 seconds later it abruptly it began to bog and before i could squeeze the clutch it began to...

i never said i continued using the inferior grade oil, but i did continue running the blaster after the "soft seizure" but with high grade oil and new gas (if that is what you mean). my buddy on the other hand continued to ride his bike (because he is a goof) on the same mix of gas and inferior...

so far i put 7 hours on the cylinder and i soft seized it due to crappy gas station brand 2stroke oil . the crappy oil also caused my pw80 and a friends KX250 to soft seize. on the contrary it was running mint since i got it

looks lean

yes, i achieved this just with glass and sand paper, and two hours of time yes, i am using premium pump gas , but what do you mean 50/50, pump gas cut with 110 race gas or av-gas ? if by thickness you mean distance from the piston to head measured by squishing soft solder (and making sure...

yes, i am aware of that, i ran it yesterday and i dont think im getting detonation or preignition. what i do get is an insanely high idol, and lots of low end power. an interesting anomaly i found is when i put the choke on at idol it clams down and idols regularly so i feel i may have to...

thanks for the info, ill check the squish and report back with my findings

just curious , how much compression is too much compression? im not sure what stock compression is but im at 150 psi after doing the figure 8 sand paper and thick glass trick. on a side note maby i should have a little more, i only put a small squirt of wd40 in the cylinder so i don't do the...

from me experience i have had mild piston slap with a wiseco piston and my build lasted 39 hours before it blew up because i didn't not jet the carb properly. currently im running an off brand that looks like a namura on a Chinese cylinder kit . ill see how long it lasts and leave an edit tin...

oops, that is what i did , now when i think about it probably will give me a falsely rich reading, time to buy more plugs and repeat the process with leaving the throttle closed when i hit the kill switch. thanks for letting me know before it is too late

i did the proper plug chop procedure except for the actual chopping part ; warm up engine, go through all gears under load and hold it in 6th for about 10 seconds, pull clutch in and hit the kill switch while holding throttle open, than take the plug out and chop it. i didn't get around to it...

thanks, i used to study photography in collage as an art elective and i used a Nikon D-300 camera

1) what carb do you have??? stock 2) What type of aftermarket exhaust do you have? Pro Circuit with stock silencer 3) What type of airfilter do you have? stock 4) What kind of air box set up do you have?? stock with six 1/2'' holes drilled on the lid, snorkel removed 5) What size pilot jets...

I have bought one of these Chinese vostors cylinders for 92$ and it came with a cheesy piston, almost like a fake namurea. i have to say the porting is unfinished , i would not even attempt to run it with out champhering the ports . i see it is only worth it if you already have a dremal, a...

foure wires come out of my stator but in the diagram i only see two