Stock Pistons: SR20DE vs SR20DET - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

tacoboy · 01-28-2010, 09:29 PM

Hey guys - I need to pick your brain.

I have the option of re-assembling my sr20 with the stock 8.5:1 pistons with new rings, or tossing in a set of 9.5:1 SR20DE pistons with new rings from a FWD sr20 I have in the shop. Are they made of different alloys? Any differences other then having to notch them for the oil squirters?

I really like the idea of a faster spool, and more "get up and go" of the higher compression number.

Thoughts?

HYPNOTIK · 01-29-2010, 02:12 AM

The NA pistons are only 9:1. They are also weaker and you'll have to notch them out for the oil squirters like you mentioned.

jdm213 · 02-05-2010, 12:00 AM

the sr20de pistons are really not meant for turbo applications thats why they made det different ???

rubhamusan · 02-05-2010, 08:28 AM

The sr20de ring lan grooves are not as thick and the rings are thinner than det's by a goodbit

01-28-2010, 09:29 PM	#1
tacoboy Leaky Injector Join Date: Dec 2008 Location: Canada Age: 33 Posts: 117 Trader Rating: (2) Feedback Score: 2 reviews	Stock Pistons: SR20DE vs SR20DET Hey guys - I need to pick your brain. I have the option of re-assembling my sr20 with the stock 8.5:1 pistons with new rings, or tossing in a set of 9.5:1 SR20DE pistons with new rings from a FWD sr20 I have in the shop. Are they made of different alloys? Any differences other then having to notch them for the oil squirters? I really like the idea of a faster spool, and more "get up and go" of the higher compression number. Thoughts?

01-29-2010, 02:12 AM	#2
HYPNOTIK Zilvia Addict Join Date: Apr 2008 Location: Pisa, Italy Posts: 700 Trader Rating: (3) Feedback Score: 3 reviews	The NA pistons are only 9:1. They are also weaker and you'll have to notch them out for the oil squirters like you mentioned. __________________

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02-05-2010, 12:00 AM	#3
jdm213 Zilvia Addict Join Date: Sep 2009 Location: los angeles Age: 31 Posts: 957 Trader Rating: (10) Feedback Score: 10 reviews	the sr20de pistons are really not meant for turbo applications thats why they made det different ???

02-05-2010, 08:28 AM	#4
rubhamusan Zilvia Member Join Date: Oct 2008 Location: Knoxville,TN Age: 49 Posts: 201 Trader Rating: (3) Feedback Score: 3 reviews	The sr20de ring lan grooves are not as thick and the rings are thinner than det's by a goodbit