2 stroke questions

[Karl Snarl]

Its close but not perfect. Needs a little tlc to get right.

 

[DieselTech]

Here is bottom side of head, what or how do I need to make it for the 49mm bore.

 

[Chainlube]

That squish band should be probably double what it is right now, Street Ryderz would know for sure.

 

[DieselTech]

The area in between arrows need to be twice as wide as it is now. With head the way it is now, I have .037" squish band clearance. Thank for the help.

 

[DieselTech]

 

[Street Ryderz]

It should be 1.5mm wider so that it goes out flush with the bore, Ideal width is around 50% of bore matched to the radius of piston dome. The cast head shown above is not very effective and should be re worked for best results, you can use a piston with sand paper on top to widen and match it to the piston dome.

 

[DieselTech]

Thanks for the info, its greatly appreciated, I guess ill have to use my new piston as I dont have any used ones yet. I think there's a old thread on here of someone doing that procedure with there old piston. Thanks again.

 

[DieselTech]

This is my 1st 2 stroke engine, & I'm just trying to make everything as correct as possible, if I had the money I'd have a aftermarket head, I'm just doing what can be done with what I can with my hands from the help of you professionals. Not looking to build no high rpm screamer, I'm looking for torque & reliability. This is great forum with lots of knowledgeable guys here. Thanks guys for help.

 

[darwin]

Tech don't forget to remove that pin taped to the top of the piston before installing the head.................it's in the pics couldn't help not saying sumptin.

 

[Karl Snarl]

It should be 1.5mm wider so that it goes out flush with the bore, Ideal width is around 50% of bore matched to the radius of piston dome. The cast head shown above is not very effective and should be re worked for best results, you can use a piston with sand paper on top to widen and match it to the piston dome.

When your turning some revs, don't you want a smaller squish than if you are looking for torque? Correct me if I am wrong. I'm trying to get a 100% complete understanding of the squish. I know how to set it etc, but get a little confused about it sometimes. In my head I'm thinking bigger = lower, smaller = higher? I'm meaning the width of the squish.