KA24DE Stock Piston Weight - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

basicmods · 10-21-2009, 03:58 PM

Ok, after searching and searching, I cannot seem to find how much the stock pistons on from the KA24DE weigh. I can find mass specs for all the aftermarket forged ones, but none for the stock ones. Even tried calling the parts guy at the dealership - no data for weight. So if anyone has a decent scale and some stock pistons laying around or knows the mass of the stock pistons, chime in.

lazysk8er2 · 10-21-2009, 04:06 PM

this is a wierd way of lowering your unsprung weight lol.

basicmods · 10-21-2009, 05:19 PM

LOL- i guess except since it's on the engine it's sprung weight at that point. The point of lighter pistons and rods is to reduce reciprocating mass and lower the internal stresses of the engine. It also would allow the engine to rev faster by using less power to accelerate the pistons which gives you more power for other things.

let5l1de · 10-21-2009, 11:40 PM

I can check this for you tomorrow. Do you want individual weight for each component such as piston, pin/clips and rod?

~mario

*ManoNegra* · 10-22-2009, 02:41 PM

With hardware except for clips:

KA240SX808 · 10-23-2009, 05:53 AM

~506g's

Big decrease considering the Lightest piston you can get w/o going custom is 317g (Not sure if that includes pin or not)

let5l1de · 10-26-2009, 01:00 PM

Quote:

Originally Posted by Nismo240R

~506g's

Big decrease considering the Lightest piston you can get w/o going custom is 317g (Not sure if that includes pin or not)

I assume you are referring to the Arias kit #3520520 KA24DE piston set for Naturally Aspirated and NOS applications. The cr is 10.6 with stock head and gasket configuration.

FYI
Just talked with Beeri @ Arias and he confirmed 317g is the Piston weight only. The wrist pin is good up to 20 psi and the weight of the wrist pin is 105 grams, with clips at 2-3 grams.

~mario

KA240SX808 · 10-26-2009, 03:30 PM

Found on KA-T:

Stock -
Pistons: 375g
Wrist Pins: 110g
Rods w/ Bolts: 760g

CityHunt3R · 11-16-2017, 07:00 PM

thanks for digging up this info.! gotta love this forum!

10-21-2009, 03:58 PM	#1
basicmods Zilvia Member Join Date: Mar 2006 Location: Dubuque, IA Age: 38 Posts: 183 Trader Rating: (3) Feedback Score: 3 reviews	KA24DE Stock Piston Weight Ok, after searching and searching, I cannot seem to find how much the stock pistons on from the KA24DE weigh. I can find mass specs for all the aftermarket forged ones, but none for the stock ones. Even tried calling the parts guy at the dealership - no data for weight. So if anyone has a decent scale and some stock pistons laying around or knows the mass of the stock pistons, chime in. __________________ '91 240SX hatch complete with super rare sunroof insert and bag!

10-21-2009, 11:40 PM	#4
let5l1de Zilvia FREAK! Join Date: Dec 2007 Location: 626DRIFT, ca Posts: 1,420 Trader Rating: (30) Rides Gallery: let5l1de Feedback Score: 30 reviews	I can check this for you tomorrow. Do you want individual weight for each component such as piston, pin/clips and rod? ~mario __________________ GR Performance facebook Pics & More! Comments! http://www.facebook.com/pages/GR-Performance/120477531339202 Read My Sales Review 626 Friday Nights San Gabriel

11-16-2017, 07:00 PM	#9
CityHunt3R Zilvia Member Join Date: Aug 2007 Location: Long Beach CA Posts: 233 Trader Rating: (7) Feedback Score: 7 reviews	thanks for digging up this info.! gotta love this forum! __________________

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10-21-2009, 05:19 PM	#3
basicmods Zilvia Member Join Date: Mar 2006 Location: Dubuque, IA Age: 38 Posts: 183 Trader Rating: (3) Feedback Score: 3 reviews	LOL- i guess except since it's on the engine it's sprung weight at that point. The point of lighter pistons and rods is to reduce reciprocating mass and lower the internal stresses of the engine. It also would allow the engine to rev faster by using less power to accelerate the pistons which gives you more power for other things. __________________ '91 240SX hatch complete with super rare sunroof insert and bag!

10-22-2009, 02:41 PM	#5
ManoNegra Guild of Skullduggerous Intent Join Date: Jan 2004 Location: Socal Posts: 7,841 Trader Rating: (48) Feedback Score: 48 reviews	With hardware except for clips: