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

DMC · 03-31-2005, 07:49 PM

Ok guys i have a machine company calling to get prices on pistons for my redtop sr, and i believe wiseco or JE asked the guy at the company chuck if my engine was a JDM blacktop or a Domestic redtop. The guy said that the combustion chambers on the heads are different and the redtop comes stock with higher compression. Now to my understanding all turbo sr's are sold out of the use and considered JDM, the redtop and blacktop both have the same compression ratio of 8.5:1 stock. Im not sure about the combustion chambers, but i know the flow on the heads is different, but the blocks i thought were the same. Can anyone clarify maybe what this guy was saying, or should i just go to the machine shop and tell them the guy is an idiot just order me 87mm 8.5:1 JE pistons?

orion::S14 · 03-31-2005, 07:52 PM

Probably means domestic...as in SR20DE from the 200SX.

- Brian

DMC · 03-31-2005, 08:55 PM

yea you are probably right i just dont understand why they said redtop, kinda weird

DocTaDrifT · 04-01-2005, 10:46 AM

wasnt the SR used in the G20 also?

TUnity2 · 04-01-2005, 11:17 AM

and NX 2000. just get some JDM tight brand pistons.

RedlineRacer · 04-01-2005, 11:24 AM

the SR20DE was also used in the B13 sentra's and it was a redtop.

420sx · 04-01-2005, 01:20 PM

yea the guy was talking about the FWD usdm Sr

DMC · 04-01-2005, 03:17 PM

well it was a difference between 8.8:1 pistons and 9.5:1 pistons and i told the guy i didnt want to go any higher than stock 8.5:1 and that there is no way the 9.5:1 is designed with turbo cars in mind but i guess maybe he just got an idiot on the line. I'll tell him to call back, i just told him id ask online to see if anyone had run into this before.

03-31-2005, 07:49 PM	#1
DMC Zilvia Addict Join Date: Jan 2003 Location: Chesapeake, Va Posts: 609 Trader Rating: (0) Feedback Score: 0 reviews	Domestic redtop? Ok guys i have a machine company calling to get prices on pistons for my redtop sr, and i believe wiseco or JE asked the guy at the company chuck if my engine was a JDM blacktop or a Domestic redtop. The guy said that the combustion chambers on the heads are different and the redtop comes stock with higher compression. Now to my understanding all turbo sr's are sold out of the use and considered JDM, the redtop and blacktop both have the same compression ratio of 8.5:1 stock. Im not sure about the combustion chambers, but i know the flow on the heads is different, but the blocks i thought were the same. Can anyone clarify maybe what this guy was saying, or should i just go to the machine shop and tell them the guy is an idiot just order me 87mm 8.5:1 JE pistons?

03-31-2005, 07:52 PM	#2
orion::S14 Nissanaholic! Join Date: May 2003 Location: Orange Park, FL Posts: 1,666 Trader Rating: (0) Feedback Score: 0 reviews	Probably means domestic...as in SR20DE from the 200SX. - Brian __________________ www.KA24DEvelopment.com

04-01-2005, 10:46 AM	#4
DocTaDrifT Zilvia Addict Join Date: Oct 2003 Location: Montebello Age: 37 Posts: 966 Trader Rating: (0) Feedback Score: 0 reviews	wasnt the SR used in the G20 also? __________________ 09 VW GTi S14 not so daily driver

04-01-2005, 01:20 PM	#7
420sx Post Whore! Join Date: Jun 2004 Location: Texas Age: 41 Posts: 3,960 Trader Rating: (0) Rides Gallery: 420sx Feedback Score: 0 reviews	yea the guy was talking about the FWD usdm Sr __________________ hydropgrahics! ls1......

03-31-2005, 08:55 PM	#3
DMC Zilvia Addict Join Date: Jan 2003 Location: Chesapeake, Va Posts: 609 Trader Rating: (0) Feedback Score: 0 reviews	yea you are probably right i just dont understand why they said redtop, kinda weird

04-01-2005, 11:17 AM	#5
TUnity2 Zilvia Junkie Join Date: Sep 2003 Location: Chalmette, la Posts: 511 Trader Rating: (0) Feedback Score: 0 reviews	and NX 2000. just get some JDM tight brand pistons.

04-01-2005, 11:24 AM	#6
RedlineRacer Zilvia FREAK! Join Date: Sep 2002 Location: Clemson, South Carolina Age: 39 Posts: 1,054 Trader Rating: (0) Feedback Score: 0 reviews	the SR20DE was also used in the B13 sentra's and it was a redtop.

04-01-2005, 03:17 PM	#8
DMC Zilvia Addict Join Date: Jan 2003 Location: Chesapeake, Va Posts: 609 Trader Rating: (0) Feedback Score: 0 reviews	well it was a difference between 8.8:1 pistons and 9.5:1 pistons and i told the guy i didnt want to go any higher than stock 8.5:1 and that there is no way the 9.5:1 is designed with turbo cars in mind but i guess maybe he just got an idiot on the line. I'll tell him to call back, i just told him id ask online to see if anyone had run into this before.