Chamfering Ports - DIY?

[Midlake Crisis]

I just had a ported cylinder bored to 82mm at a local machine shop that does not specialize in PWC.
The bottom line is that boring the cylinder eliminated what chamfering had been done to the ports.
Is this a job I can do at home in a cost effective way, or should I just pay to have it done?
I would need to know what tool(s) to use etc.

 

[McDog]

A dremel...... Yourself.

 

[DAG]

DIY dremel with sanding drum

 

[Midlake Crisis]

DIY dremel with sanding drum

Thanks for the input - what grit would you use? Any tips on how much is enough to take off the corners?

 

[badvinny]

Or even a small file, about. 025".

 

[DAG]

Thanks for the input - what grit would you use? Any tips on how much is enough to take off the corners?

I used 120 just because that's what I had but it did the job nicely. You just want to make a smooth transitions. The least amount of material removed and the ports still blend nicely the better. I say no more than .030"

 

[badvinny]

If they don't specialize in cylinder boring, then be sure to double check the finished clearance and the ring gap!

 

[ajmps1]

Apples and oranges are still fruit. If its a machine shop that does cylinder work they can properly chamfer the cyl

 

[Blue]

Any experienced machinist should of known to chamfer the ports before giving it back to you. You can do it yourself or take it back and request they do the chamfering. They should of anyway.

 

[Midlake Crisis]

Any experienced machinist should of known to chamfer the ports before giving it back to you. You can do it yourself or take it back and request they do the chamfering. They should of anyway.

Just another episdoe in this comedy of errors . .. . I bought this motor "ready to ride" and have already had to buy pistons and pay for cylinder boring before it has ever been turned over. I am just taking it one lump at a time. A lot to be said for buying new if you can afford it.

 

[badvinny]

Any experienced machinist should of known to chamfer the ports before giving it back to you. You can do it yourself or take it back and request they do the chamfering. They should of anyway.

Exactly why I suggested to check the clearance and the ring gap, because it doesn't sound like it was done by a 'cylinder ' guy!

 

[CRJ]

have them do it. Dont forget to finish hone it after its done.

 

[naticen]

I've chamfered my own with a dremel. Super easy.

The guy that does mine is the guy that did all of our machine work for the automotive garage I worked at. He does great work but doesn't chamfer ports because he doesn't work on 2 strokes and doesn't care to. He does give me a killer price though. I wouldn't be scared one bit. A cylinder is a cylinder.

 

[Midlake Crisis]

Any experienced machinist should of known to chamfer the ports before giving it back to you. You can do it yourself or take it back and request they do the chamfering. They should of anyway.

Do you guys use diamond burr bits for chamfering?
I am looking at some 120 grit diamond burr bits for my Foredom rotary tool on eBay.