Piston choice? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

shift_down · 10-20-2012, 07:57 AM

Hey guys, Im looking at pistons right now and cant decide what to buy. Ive been searching and cant really find a good answer.

Im boosting my ka24de and I am trying to figure out what comression pistons I need. Also, should I go with the least possible oversized pistons? That way I can bore out the cylinders a little more if I needed to in the future? Thanks

S14 Cobra · 10-20-2012, 10:43 AM

.20 cp pistons 9:1 compression=good to go!

Slims · 10-20-2012, 10:47 AM

Depends on your power goals, cams, and a few other things.

d_nice · 10-20-2012, 10:54 AM

as s14 cobra said.. ..i have that setup and hopefully good results..looking to get 350-400hp with it

Frank_Jaeger · 10-20-2012, 06:56 PM

I went with lower compression pistons myself. Arias 8.8:1 .020 over. 9:1 .020 should be safe.

shift_down · 10-21-2012, 12:22 PM

What's the difference between 8.8 and 9, what's the difference between going higher or lower?

Frank_Jaeger · 10-21-2012, 12:30 PM

Quote:

Originally Posted by shift_down

What's the difference between 8.8 and 9, what's the difference between going higher or lower?

All other variables the same, the 9 will produce more power than 8.8. However the lower compression 8.8 can run more boost safer. Since I intend on running a lot of boost, I went with the lower compression pistons. People run 9:1 all day long under boost, but I decided to be that much safer. There's a lot more to it, but this is my very basic understanding of it.

shift_down · 10-21-2012, 01:07 PM

Good enough for me. Safety is my biggest concern. Thank you.

10-20-2012, 07:57 AM	#1
shift_down Zilvia Junkie Join Date: Sep 2012 Location: Tulsa Oklahoma Age: 34 Posts: 313 Trader Rating: (0) Feedback Score: 0 reviews	Piston choice? Hey guys, Im looking at pistons right now and cant decide what to buy. Ive been searching and cant really find a good answer. Im boosting my ka24de and I am trying to figure out what comression pistons I need. Also, should I go with the least possible oversized pistons? That way I can bore out the cylinders a little more if I needed to in the future? Thanks __________________ Ka24 t3/t04b + Z32MAF + 550 subys + Walbro 255 + enthalpy Tune + 91 octane

10-21-2012, 12:22 PM	#6
shift_down Zilvia Junkie Join Date: Sep 2012 Location: Tulsa Oklahoma Age: 34 Posts: 313 Trader Rating: (0) Feedback Score: 0 reviews	What's the difference between 8.8 and 9, what's the difference between going higher or lower? __________________ Ka24 t3/t04b + Z32MAF + 550 subys + Walbro 255 + enthalpy Tune + 91 octane

10-21-2012, 01:07 PM	#8
shift_down Zilvia Junkie Join Date: Sep 2012 Location: Tulsa Oklahoma Age: 34 Posts: 313 Trader Rating: (0) Feedback Score: 0 reviews	Good enough for me. Safety is my biggest concern. Thank you. __________________ Ka24 t3/t04b + Z32MAF + 550 subys + Walbro 255 + enthalpy Tune + 91 octane

10-20-2012, 10:43 AM	#2
S14 Cobra Join Date: Oct 2012 Location: Hampton Age: 41 Posts: 5 Trader Rating: (0) Feedback Score: 0 reviews	.20 cp pistons 9:1 compression=good to go!

10-20-2012, 10:47 AM	#3
Slims Zilvia Member Join Date: Jan 2011 Location: Solvang CA Posts: 245 Trader Rating: (2) Feedback Score: 2 reviews	Depends on your power goals, cams, and a few other things.

10-20-2012, 10:54 AM	#4
d_nice Post Whore! Join Date: Aug 2010 Location: florida Age: 43 Posts: 3,595 Trader Rating: (39) Feedback Score: 39 reviews	as s14 cobra said.. ..i have that setup and hopefully good results..looking to get 350-400hp with it

10-20-2012, 06:56 PM	#5
Frank_Jaeger Zilvia FREAK! Join Date: Jan 2012 Location: Port Charlotte, Florida Age: 32 Posts: 1,352 Trader Rating: (1) Feedback Score: 1 reviews	I went with lower compression pistons myself. Arias 8.8:1 .020 over. 9:1 .020 should be safe.