S15 piston information - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

michalcapar · 04-07-2015, 07:17 AM

Hi guys, I've tried searching but haven't been able to find any info on this other than a generalization of what a stock s15 sr can handle. What I'm looking for in particular is how the stock pistons are and what they can handle. I'm rebuilding my motor; as far as bottom end goes I got eagle rods, main bearings, rod bearings..etc. As far as my pistons go, they look in good shape. From what I've heard, s15 pistons are pretty heavy duty, but that could also be wrong and I honestly don't know

.

Any input?

mewantkouki · 04-07-2015, 09:43 AM

S14 and S15 pistons are the same cast 54c units. 350-400whp is a safe bet. I'm sure somebody somewhere has made 500whp + on a stock bottom end but those engines usually don't last more than a year or two.

Kingtal0n · 04-07-2015, 01:08 PM

this is how I feel

04-07-2015, 07:17 AM	#1
michalcapar Join Date: Apr 2014 Location: Sweet mother earth Posts: 8 Trader Rating: (0) Feedback Score: 0 reviews	S15 piston information Hi guys, I've tried searching but haven't been able to find any info on this other than a generalization of what a stock s15 sr can handle. What I'm looking for in particular is how the stock pistons are and what they can handle. I'm rebuilding my motor; as far as bottom end goes I got eagle rods, main bearings, rod bearings..etc. As far as my pistons go, they look in good shape. From what I've heard, s15 pistons are pretty heavy duty, but that could also be wrong and I honestly don't know . Any input?

04-07-2015, 01:08 PM	#3
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 38 Posts: 4,649 Trader Rating: (17) Feedback Score: 17 reviews	this is how I feel __________________ 5.3/4l80e/turbo 240sx playthrough: https://tinyurl.com/turbo240

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04-07-2015, 09:43 AM	#2
mewantkouki Zilvia FREAK! Join Date: Nov 2007 Location: Orlando, Fl Age: 35 Posts: 1,221 Trader Rating: (36) Feedback Score: 36 reviews	S14 and S15 pistons are the same cast 54c units. 350-400whp is a safe bet. I'm sure somebody somewhere has made 500whp + on a stock bottom end but those engines usually don't last more than a year or two.