2 Strokes Down Under

I think the box would be about 1.5L with two pod filters inside and a few 40mm flex hoses going up to somewhere that wont suck wat er in thanks for the help it never herts to have a second opinion on these things

Ok I have a delemer with fiting a airbox on this bike well one that is a big as the kr motor used as standard I no on four strokes air box volume and volocity stack lenth are very importent for tuneing power at certin rpm ranges my question is are 2t engines as fussy about these things I was thinkin...

This week I had a go at hydroforming a test pipe with my gerni supriseingly it worked and well this one I just made straight to have a go and lern something in the process what I learnt was if I dollied the sides bofore I welded it up so there was a radius at the join it realy helped get a true circ...

Hi guys got some picks up on photo bucket at if people want to see just serch Aaron19806

Still working out the photos.been to busy reworking the frame to suit the new engine I ended up modifying the whole bottom of the frame and raise where the bottom rails meet under the the radiators so the front expantion chamber can fit threw

Yep I wanted to post some build picks but dont know how to from my phone just starting to get into engine mounts and working out the pipes

Ok finaly got a frame to put the motor in its a wr426 frame same as my motard bike first thing I will do is machine up a mount where the wr engine goes on the swingarm bolt and link that to the back one on the kr engine useing box section makeing sure the sprocket lines up nice then from there I can...

Hi guys I read someone here say the 84 kr250 had a weak bottom end I just got a kr motor for a build I am doing and would like to know more like can I take off the oil pump and run premix if so what oil and fuel mix is 30:1 ok also I have heard that kx125 carbs are a good upgrade from the stock 28s ...

Hi guys I read someone here say the 84 kr250 had a weak bottom end I just got a kr motor for a build I am doing and would like to know more like can I take off the oil pump and run premix if so what oil and fuel mix is 30:1 ok also I have heard that kx125 carbs are a good upgrade from the stock 28s ...

Hi guys I read someone here say the 84 kr250 had a weak bottom end I just got a kr motor for a build I am doing and would like to know more like can I take off the oil pump and run premix if so what oil and fuel mix is 30:1 ok also I have heard that kx125 carbs are a good upgrade from the stock 28s ...

I did think of reworking the stock kr pipes to fit or atleast use them to reverse enginer the new ones from.makeing the pipes is no problem tig welding sheet metal is what I do for a liveing and I realy want to make them myself but thanks for the heads up on the program being rubbish I will look int...

Thanks I will be useing a basic program I got online and I will check the sizes it gives me against some stock mx bike pipes to see if it looks somewhat simelar from what I have seen the program seems to give me a fair result

I will be useing it for rideing bush.i have started makeing bits and pieces but till I get hold of a frame I cant do much more got the cash but cant find a roling frame in one piece whats the deal with 2into1 pipes do they work well I have never seen one on a bike can somebody shead some light on th...

Wow I just read your link you realy should finish it (check out rd350 yz) on you tube it may give you some insperation to keep going with it

Yes the inline twinn fits in the yz frame but the down tube needs to be modded the engine isent any longer than a single supriseingly be the rear port doesent come close to the shock because the motor is made to lean forward and the sprocket lines up where i t should be for the pipes I will be makei...