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[Passenger]

Vitaras also have a very thick crown.  With how the 1.7 stroker setups bump CR up to a horrible 9:1 CR, lathing a piston down is one of the ways in which we've discussed lowering CR back down to a heavenly 7.5:1.

I do this to DI diesel pistons a lot, which is fun because the combustion chamber is eccentric to the O.D.

By the way its called "turning", not "lathing".

Turning is every bit as inaccurate as lathing.  It's a garbage baby word meant to communicate with simpletons. The actual machining operations possible on a lathe are cutting, sanding, knurling, drilling, or deformation.  The procedure being discussed, if it's called anything, is cutting. 


ok??

Actually, no, you are wrong. Turning is the process of turning the work piece, instead of the  cutter like on a milling machine. Turning does not, and is not intended to dictate the the method of material removal or forming thereafter. Turning is a process, a lathe is an object. You know the difference.

[E-b0la]

Actually, no, you are wrong. Turning is the process of turning the work piece, instead of the  cutter like on a milling machine. Turning does not, and is not intended to dictate the the method of material removal or forming thereafter. Turning is a process, a lathe is an object. You know the difference.

you are arguing over nothing, shut up.

Now back on topic,

I'm looking at the used set of vitaras for my vitara ls rod build I'll never finish, doesn't seen to be too much material between the underside of the piston and the bottom of the dish.

maybe taking a small amount off the top edges, and making the dish wider would be the way to go? Although taking material off the top would result in the rings being closer to the top of the piston, might not be good.

[Passenger]

Actually, no, you are wrong. Turning is the process of turning the work piece, instead of the  cutter like on a milling machine. Turning does not, and is not intended to dictate the the method of material removal or forming thereafter. Turning is a process, a lathe is an object. You know the difference.

you are arguing over nothing, shut up.

Now back on topic,

I'm looking at the used set of vitaras for my vitara ls rod build I'll never finish, doesn't seen to be too much material between the underside of the piston and the bottom of the dish.

maybe taking a small amount off the top edges, and making the dish wider would be the way to go? Although taking material off the top would result in the rings being closer to the top of the piston, might not be good.

Cry the tears of a thousand whores.

You would probably be best off dropping the bowl area including the radius given there is enough material in the cross sectional area. I wouldn't try making the bowl wider unless I was out of options.

[Whitey]

By the way its called "turning", not "lathing".

I was going to say the same thing when I read that but I knew I'd probably get a 500 word paragraph on why I was wrong. 

Turning is every bit as inaccurate as lathing.  It's a garbage baby word meant to communicate with simpletons. The actual machining operations possible on a lathe are cutting, sanding, knurling, drilling, or deformation.  The procedure being discussed, if it's called anything, is cutting. 

ok??

Sorry but your wrong.  At my work we have over 100 lathes (a couple 9 axis Okumas  :yes: ) and if I would ever say "lathing" I'd be laughed at.  That machining operation is called turning becuase your using a single point tool and rotating the workpiece using a lathe.  Also, sanding is not a machining operation (even if it was directly quoted from Wikipedia.)   

[Corey]

yup if i asked to have something lathed down at work they would look at me funny. sorry joey, owning a lathe doesnt make you an expert on machinist jargon.

[patsmx5]

turning a part down is correct nomenclature if you're talking about using a lathe. I've done a wee bit of machine work before.

[Zarcorp]

I made chocolate muffins today. They were delicious.

[Doug]

I made chocolate muffins today. They were delicious.

I made some hard lemonade, it wasn't

[Zarcorp]

It's okay, I tried making Thai coconut ice cream, it's solid as a rock.

I don't think I let it get thick enough before freezing it.

[Foowee]

need a Vitara to cut in half before I can comment

[Robb]

Reported this thread for lack of entertainment and too many people concerned about syntax errors. 


ok.

[dvst8r]

Anybody happen to have a stock D piston cut like Foowee's?

[Foowee]

Anybody happen to have a stock D piston cut like Foowee's?

pm3:






pm7:







p28:

[dvst8r]

Foowee is on top of it. 

Nice work.

Edit: Thanks for the pics Bone

[Foowee]

Thank crxtaz for the pics.  I'm just clicking "copy n paste".

[Joseph Davis]

yup if i asked to have something lathed down at work they would look at me funny.

My point exactly.  I don't work with a bunch of machinists, and you all understood what I meant, so the collective lot of you can wash the sand out of your vaginas.   




Foowee, give Chuck props for that piston carnage.

[Passenger]

yup if i asked to have something lathed down at work they would look at me funny.

My point exactly.  I don't work with a bunch of machinists, and you all understood what I meant, so the collective lot of you can wash the sand out of your vaginas.   




Foowee, give Chuck props for that piston carnage.

Your response disappoints me

[Joseph Davis]

Apathy's hard to argue with, huh?

[Passenger]

I didn't read it as apathy as much as I did "I'm not going to admit I don't know what I am talking about"

[Joseph Davis]

Read whatever you want to into it.  I had a two year degree in CNC machining from the late 90s and basically no experience since.  I'm qualified to not crash the tool holder into the chuck, and not much more, and I don't give a fuck about correct terminology. 

[Whitey]

Read whatever you want to into it.  I had a two year degree in CNC machining from the late 90s and basically no experience since.  I'm qualified to not crash the tool holder into the chuck, and not much more, and I don't give a fuck about correct terminology. 

There's no way you have your machinist papers or a "CNC machining degree"  and make a statement like this:

Turning is every bit as inaccurate as lathing.  It's a garbage baby word meant to communicate with simpletons. The actual machining operations possible on a lathe are cutting, sanding, knurling, drilling, or deformation.  The procedure being discussed, if it's called anything, is cutting. 

[Joseph Davis]

I'm not a liar, Whitey.  You can kiss my ass.

[1991civicsi]

Pics look great, but. when did this thread get gay?

[Joseph Davis]

When the grammar cops arrived.

[dvst8r]

When the grammar cops arrived.

Syntax cops I believe is what you were looking for. 

[fysh]

Run! its the poh-leeeeease.

[Joseph Davis]

When the grammar cops arrived.

Syntax cops I believe is what you were looking for. 

Right!  Whatever it is, I suck at it.

[Passenger]

I agree, sorry Yoseph, I like you, but I call bull on spending two years in school for cnc machining and you call turning "lathing".

[Robb]

I think he meant he took some classes for 2 years.  You have to remember where we live, his teacher probably didnt know/care about proper terminology.

[dvst8r]

I think he meant he took some classes for 2 years.  You have to remember where we live, his teacher probably didnt know/care about proper terminology.

But could probably play a mean banjo...