machining pistons, what method??
21-04-2005, 02:44 PM
#2
Do you mean when they are made, in which case they tend not to be, or do you mean when someone wants to lower the compression of an engine etc?
In which case, generally they are milled in my experience.
Sadly though that normally involves bending the squish over and giving it 8" up the wrong'un
In which case, generally they are milled in my experience.
Sadly though that normally involves bending the squish over and giving it 8" up the wrong'un
21-04-2005, 02:55 PM
#6
I've found that life I needed.. It's HERE!!
don't grind aluminium, tends to bind up 
i would personally turn a piston on a lathe, but you will have to be careful of fixturing.
Millling is just as easy depending on the setup used
i would personally turn a piston on a lathe, but you will have to be careful of fixturing.
Millling is just as easy depending on the setup used
21-04-2005, 02:57 PM
#7
ok cheers alex.
so then, if i wanted to build an experiment zetec turbo engine, by taking the pistons and machining them, it would be best to dish the middle and leave say a 5mm ring around the edge at std height? like proppa low comp pistons.
although the area machined will be minimal, will it have a drastic effect being 1-2mm lower?
and for this experiment before anyone says it will go pop - i dont care, it wont be in my car, and 1.8 zetecs are rather cheap to buy so no great loss.
just to see exactly how much power it will make at what ever boost on a std engine with machined pistons.
so then, if i wanted to build an experiment zetec turbo engine, by taking the pistons and machining them, it would be best to dish the middle and leave say a 5mm ring around the edge at std height? like proppa low comp pistons.
although the area machined will be minimal, will it have a drastic effect being 1-2mm lower?
and for this experiment before anyone says it will go pop - i dont care, it wont be in my car, and 1.8 zetecs are rather cheap to buy so no great loss.
just to see exactly how much power it will make at what ever boost on a std engine with machined pistons.
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21-04-2005, 03:04 PM
#8
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yes it would be best to leave squish in there 
The porblem is as soon as you remove material from the top of the piston (called the crown) you weaken it!
It not idea to weaken a componant in an engine you want to extract more power from.
Alex
The porblem is as soon as you remove material from the top of the piston (called the crown) you weaken it!
It not idea to weaken a componant in an engine you want to extract more power from.
Alex
21-04-2005, 03:13 PM
#9
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Re: machining pistons, what method??
Originally Posted by fudgeass
how are pistons machined, for example
..................ground with a bench grinder?
..................ground with a bench grinder?
Fugdeass have you ever seen that being done?? Hope not lol 
21-04-2005, 06:12 PM
#12
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Re: machining pistons, what method??
Originally Posted by fudgeass
, ground with a bench grinder???
cant beat precision engineering.. hahah 
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