I was wondering what is the farthest I can push the stock bore out to and how far can I shave the head down and still get reliability and some good power?
stock bore and head
- Thread starter tomcat7810
- Start date
boring the stock jug out to about 68 maybe 68.5mm is all the farther you really want to push it. but unfortunately you wont see hardly any performance from it. use this strictly to revive the cylinder after it has been damaged. Shaving the head down will add a little more horsepower by increasing your compression. i dont know how far you can go with this though. your best bet is to just get your stock jug ported 140 or so bucks and get the head shaved for 93 octane pump gas about 50 bucks. this will throw you some good HP's with a pipe and air filter and reeds.
yea I am putting together a blaster out of spare parts to compete with my brothers he has basically a jet kit, vitos 240 kit, factory 7 exhaust. I have a jug that is .20 over and is in excellent shape. do you think porting this and shaving it will get me close to him. I also have a crappy fmf exhaust and a jet kit aswell. or if there is anything else somewhat cheap I can pick up that will help me.
does he have his 240 kit ported? if not at stock jug ported for aggressive trail will beat on a vitos 240 all day
nope he pulled it out of the box and put it on lol.... no port ever done. so keep my stock bore and get it ported and shave the head down how much? also what piston should I run?
talk to a tech on here. you are going to want one of them to port it anyways. Flotek, wildcardracing2 or oconnerracing is where its at. they will know how much to shave the head how to port it. also a better exhaust like that f7 your brother has would be ideal. But yeah talk to them they will set you up and you can whoop on him all day long for alot less than that vitos kit he bought...
ok I do have a guy local that i know that does it. He does every thing around our area and does it for all the shops around and will do it for cheaper then they will just cause i have done a lot of business with him. Is it highly recommended that i get one of those companies to do it?
yea the guy actually started out doing 2 stroke race jet skis and now after years and years of doing things has earned all the business around. whether it is a 2 or 4 stroke jet ski or dirt bike or atv.
absolutely if you trust the guy thats what matters... oh and the experience thing yeah minor detail... but sounds like he knows what he is doing and talk to him he should know all the specs and everything. if he seems a little confused or not as versed with blasters then hit up flotek wildcard or oconner all very good depends on preference really.
definitely use a forged piston that way it doesnt break apart and end up in your crankcase yeah wiseco is the best for stock jugs imo. and for 240 bb kits the way to go now adays seems to be wossner pistons