Request for a quote , Billet 2 stroke cylinder

[Arich0908]

Im looking for a machinist to replicate a cylinder in billet aluminum for my Zenaoh G62 2 stroke engine.
The cylinder is going to have a sleeve pressed in it.Its also has a head kit.
So it the lower half of the cylinder that wraps around the sleeve. I would need Intake and exhaust mounts to be there but would prefer them to be left filled in. I also would like the cylinder to be alot thicker than the stock one for a massive port job. All the transfer I would like to be left alone also.
I would have my engine builder/porter do all theese by hand.

This is what the cylinder looks like . If your up to it Private message me please.
Thank You ,
Anthony

[RFB]

Arich0908,

It is extremely difficult to manufacture a two stroke cylinder from a billet. I use to race karts and I manufacture cylinder housings for some of my highly modified engines. The difficulty is with the transfer ports for the intake cycle. My approach was to machine the housing so that the inboard half of the transfer port was an open cavity. (research Westbend 820 engine block design) The outboard half of the transfer port was machined separately and it was fastened to the cylinder housing with bolts. The outboard 'port caps' included cooling fins that matched the main cylinder housing.

You could not afford to have me manufacture your cylinder, but perhaps you can find a hobby machinist that is looking for a challenge.

It would be more affordable if you would educate yourself on investment casting and then find a foundry to pour your cylinder/s.

To be honest, you probably don't need to manufacture a cylinder housing. If your cylinder uses an iron sleeve then you can very easily add boost ports (finger ports) in the sleeve. Rarely do you raise the exhaust port by any significant amount and again the sleeve configuration makes it very simple to raise the intake ports. It's doubtful that you would need to raise your intake ports by any significant amount. Do you even know what blow down timing that you currently have and how much you want to increase it? Two stroke engines are simple in design but very complex when it comes to modifying and tuning them.

RB

[Arich0908]

I found a Machine shop to do the work. My god he wants to bend me over.

As I stated I didnt want ports or transfers to be there at all because I was going to have my engine builder /porter do all them by hand. That is a art form in its own.
No I dont know the timing specs or much of any specs at that because Im just putting the money up lol. My builder has years and years of experience with that.

I wish I new how to use machining tools to make my own stuff ive been looking onto it for years but I just cant seem to understand... Maybe its a hands on type of thing.

[RFB]

Arich0908,

If the tranfer ports would be extremely difficult to machine then hogging out all of that material by hand would be even more difficult.

How do you know that your machine shop contact is trying to bend you over? You haven't heard my price.

Good Luck,
RB

[Arich0908]

No transfers are not difficult to cut by hand.
Ive done 10 or so the metals pretty easy to work with.I dont trust my self on a caliber of that level to do a pefect job but any ways , That wasnt the reason for not letting the machinist cut the transfer it was because I wanted to give the engine proter total control over what they looked like.

I say he was bending me over because I have got one other quote and it was double the first one. But maybe the first guy just didn't have the experience or skill to know how to give me a proper quote.