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View Full Version : Let you guyz know about NA or Turboed engine specs


DaemonGA
02-19-2005, 02:37 AM
Hey, guyz... sorry i havent been on computer for while... my comp having probs a lot now it s fine... anyway... if you plan to turbo your car... and want more powers.... go for concave pistons (bowls on top of piston heads) for more massive air flow into the combustion chambers and it s very good for high boost into chambers... and for NA (Naturally Aspirated - meant no turboed engines) go for Short-Air Pistons (nicknamed "Domed Pistons") for little air going in but will greatly advanced the timing (that s what muscle cars use them) I plan to put concave pistons in my 3100 V6 when i get supercharger.... Ok that s all that i need to let you guyz know.... If any questions.. i ll happy to answer them :)

schweppe23
02-19-2005, 08:38 AM
3x00 already has "dished" pistons stock.

Colin
02-19-2005, 08:24 PM
Try finding domed pistons for a 3100 .... :lol: And get a case of octane booster while yer at it .

DaemonGA
02-19-2005, 09:37 PM
errr.... i wouldnt try domed pistons.... they tend to bend the valves at high rpm.... i would go for concave pistons.... btw.. my 3100 dont have "dished" piston heads.... mine are flat-tops... i know because i have rebuilt my 3100 once.. domed pistons tend to take in small amount of air but will be powerful... as far as i know they can blow the intake parts off or bend the valves...
Domed Pistons is for Low Compression ratio and Concave pistons is for Higher Compression... octance required like around 91 but 93 is recommended

thegeswho3
02-22-2005, 06:12 PM
stick with stock pistons unless your replacing most of your valve, intake and exhaust parts. Changing pistons changes compression ratios and rpm timing and can realy lower power if your not calculating what you are doing.

TA^Guy
02-22-2005, 06:16 PM
Originally posted by thegeswho3
stick with stock pistons unless your replacing most of your valve, intake and exhaust parts. Changing pistons changes compression ratios and rpm timing and can realy lower power if your not calculating what you are doing.
Changing your pistons will not change the 'RPM timing'- whatever that is suppose to mean.

azeniskid
02-22-2005, 07:32 PM
Originally posted by TA^Guy
Changing your pistons will not change the 'RPM timing'- whatever that is suppose to mean.

maybe it's vtec.

Colin
02-22-2005, 08:39 PM
:notworth: :shit:

ChevelleSSLS6
02-24-2005, 07:04 PM
Originally posted by DaemonGA
Hey, guyz... sorry i havent been on computer for while... my comp having probs a lot now it s fine... anyway... if you plan to turbo your car... and want more powers.... go for concave pistons (bowls on top of piston heads) for more massive air flow into the combustion chambers and it s very good for high boost into chambers... and for NA (Naturally Aspirated - meant no turboed engines) go for Short-Air Pistons (nicknamed "Domed Pistons") for little air going in but will greatly advanced the timing (that s what muscle cars use them) I plan to put concave pistons in my 3100 V6 when i get supercharger.... Ok that s all that i need to let you guyz know.... If any questions.. i ll happy to answer them :)

1. Domed pistons increase compression ratio by protruding (sticking up) into the combustion chamber. This is not good for flame travel. Not good for S/C

2. Flat-top pistons, I believe, are best with modern cylinder heads that utilize quench and squish theories, which do work.

3. Dished pistons decrease the compression ratio, but allow most efficent flame travel. Think of a true Hemi (hemispherical, half circle) head, but turned upside down with no valves. Generally best with S/C or high-compression heads and ya want to run cheepie gas.

4. :iagree: