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***dorkidori_s13*** · 02-20-2014, 09:33 PM

ugh, before this thread goes to hell...

SR20det Redtop 1st Gen: 90.5 to 91 (180sx and Silvia) NO HEAD FINS - T25 Turbo
SR20det Redtop 2nd Gen: 92 to 93 (180sx and Silvia) HEAD FINS - T25 Turbo
SR20det Blacktop 1st Gen: 94-95 (180sx only) HEAD FINS - T25 Turbo
SR20det Blacktop 2nd Gen: 96-98 (180sx and SilEighty only) HEAD FINS - T25 Turbo

Im not 100% on the changes between the 1st gen and 2nd gen Blacktop motors. From what I can recall, 1st gen used a slightly different tune in the ECU and I THINK grounded the 02 sensor on the chassis instead of inside the ECU like the late models did.

SR20det NOTCHTOP 1st Gen: 94-98 (S14 ONLY) VVT Intake cam - T28 w/journal bearing
SR20det NOTCHTOP 2nd Gen: 99-02 (S15 ONLY) VVT Intake cam - T28 w/dual ball bearing on R-Spec trim only

S15 R-Spec models came with a dual ball bearing GT28rs turbo that upped the power from 228hp to i believe 250.

All internals on SRs are the same for the most part. The heads between the VVT and non VVT engines have slightly different water way paths going from the block to the head. The S14/S15 use high mount intake manifold vs the S13 motors using the older low port manis. This was changed mainly due to emissions. (S13 AIV vs S14/S15 EGR)

No motor is superior than the other. They all have their ups and downs. Spend the money, build a motor correctly and have it tuned properly otherwise youll wind up with a very expensive and very unreliable pain in the ass! Most people shoot for the magical 400-500hp range for some odd reason. Unless youre building a full on track machine that isnt all hellastupid with ugly stretched wheels mounted on heavy ass, cheap wheels, 300whp in an S13 or S14 is damn scary! im not talking about 300 crank HP either. S-Chassis get dangerous after 300whp as keeping the rear end planted requires REAL wheels with REAL tires, not the trendy 225 on a 18x10 with no contact patch because your camber is at -12 degrees. Get an SR and start tuning it properly. When you hit the 300+whp mark, learn how to drive and properly tune the suspension in your car. racecars are lowered, not dumped. they use proper toe and camber, not the jack ass shit you see on cars that are all show and no go!

Also, S14/S15 motors ARE NOT called Blacktops! PERIOD! The proper name for them is NOTCHTOP because of the large hump in the middle of the valve cover. Nissan decided to incorporate the S13s OEM oil catch can into the valve cover instead of mounting it to the head of the motor above the exhaust manifold.

Im giving this thread 24 hours until it requires me to lock it due to the flame war that Im just waiting to errupt!

02-20-2014, 09:33 PM	#10
*dorkidori_s13* ITS LISA'S FAULT!!! Join Date: Jun 2003 Location: Las Vegas Age: 43 Posts: 7,496 Trader Rating: (41)	ugh, before this thread goes to hell... SR20det Redtop 1st Gen: 90.5 to 91 (180sx and Silvia) NO HEAD FINS - T25 Turbo SR20det Redtop 2nd Gen: 92 to 93 (180sx and Silvia) HEAD FINS - T25 Turbo SR20det Blacktop 1st Gen: 94-95 (180sx only) HEAD FINS - T25 Turbo SR20det Blacktop 2nd Gen: 96-98 (180sx and SilEighty only) HEAD FINS - T25 Turbo Im not 100% on the changes between the 1st gen and 2nd gen Blacktop motors. From what I can recall, 1st gen used a slightly different tune in the ECU and I THINK grounded the 02 sensor on the chassis instead of inside the ECU like the late models did. SR20det NOTCHTOP 1st Gen: 94-98 (S14 ONLY) VVT Intake cam - T28 w/journal bearing SR20det NOTCHTOP 2nd Gen: 99-02 (S15 ONLY) VVT Intake cam - T28 w/dual ball bearing on R-Spec trim only S15 R-Spec models came with a dual ball bearing GT28rs turbo that upped the power from 228hp to i believe 250. All internals on SRs are the same for the most part. The heads between the VVT and non VVT engines have slightly different water way paths going from the block to the head. The S14/S15 use high mount intake manifold vs the S13 motors using the older low port manis. This was changed mainly due to emissions. (S13 AIV vs S14/S15 EGR) No motor is superior than the other. They all have their ups and downs. Spend the money, build a motor correctly and have it tuned properly otherwise youll wind up with a very expensive and very unreliable pain in the ass! Most people shoot for the magical 400-500hp range for some odd reason. Unless youre building a full on track machine that isnt all hellastupid with ugly stretched wheels mounted on heavy ass, cheap wheels, 300whp in an S13 or S14 is damn scary! im not talking about 300 crank HP either. S-Chassis get dangerous after 300whp as keeping the rear end planted requires REAL wheels with REAL tires, not the trendy 225 on a 18x10 with no contact patch because your camber is at -12 degrees. Get an SR and start tuning it properly. When you hit the 300+whp mark, learn how to drive and properly tune the suspension in your car. racecars are lowered, not dumped. they use proper toe and camber, not the jack ass shit you see on cars that are all show and no go! Also, S14/S15 motors ARE NOT called Blacktops! PERIOD! The proper name for them is NOTCHTOP because of the large hump in the middle of the valve cover. Nissan decided to incorporate the S13s OEM oil catch can into the valve cover instead of mounting it to the head of the motor above the exhaust manifold. Im giving this thread 24 hours until it requires me to lock it due to the flame war that Im just waiting to errupt! __________________ Check out my IG for what I'm up to! DORKIDORI INSTAGRAM!!! Last edited by dorkidori_s13; 02-20-2014 at 10:41 PM..