Stock Intake and Turbo Manifold - Power Limitation on S13/S14 SR - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

eclipse_dsm · 09-20-2009, 01:12 AM

I have been doing some searching on whats the most efficient power you can get with the stock SR Intake and Turbo manifold. While I do have an idea already I would appreciate some more input. I currently have a built bottom end S14 Kouki SR20DET and preparing the car to be tuned soon. I'm planning on upgrading my injectors from 550cc to 740cc and Nistune. I like to keep the motor looking OE hence the question but need to know at which HP will the stock manifold becomes restrictive. Thanks!

Specs....

86.5mm CP pistons
Eagle Rods / Bearings
ARP head studs
Greddy Headgasket
Greddy oversized oil pan
Forced Performance 20G TD06SL2
DENSO 550cc Injectors
N62 Z32 Maf

steve shadows · 09-20-2009, 06:56 PM

The only real thing that these parts limit are capacity

The turbo manifold simply limits the choices you can bolt up to it and aslo the options but it doesnt by itself limit your HP possibilities.

The Intake Manifold is actually a beneficial part. Keeping the stock IM will actually insure that your turbo spools up VERY FAST and that your throttle response is excellent.

I suggest keeping both stock, they are bost highly capable up to 500 whp levels.

I would suggest however, upgrading your Throttle Body with a NA JDM SR one which is larger in diam

Not You · 09-20-2009, 07:38 PM

Agreed, the key is to make EFFICENT horsepower with a good powerband. The stock intake manifold will do great at this, efficent low end tq, and good quick spool. The exhaust manifold is also great at this, however you are limited to the size of turbo you can put on. Stay stock, it looks less flashy and is more efficent.

*fliprayzin240sx* · 09-20-2009, 11:11 PM

Wait, youre gonna run a TD06 20G turbo bottom mount? Why?!?! Top mount it and go bigger flange that the stock T2.

GroundPerformance · 09-20-2009, 11:36 PM

Quote:

Originally Posted by fliprayzin240sx

Wait, youre gonna run a TD06 20G turbo bottom mount? Why?!?! Top mount it and go bigger flange that the stock T2.

I think the idea it to make it still look OE and yet make loadss of HP.

09-20-2009, 01:12 AM	#1
eclipse_dsm Zilvia Junkie Join Date: Jun 2005 Location: DriftHeaven Posts: 411 Trader Rating: (3) Feedback Score: 3 reviews	Stock Intake and Turbo Manifold - Power Limitation on S13/S14 SR I have been doing some searching on whats the most efficient power you can get with the stock SR Intake and Turbo manifold. While I do have an idea already I would appreciate some more input. I currently have a built bottom end S14 Kouki SR20DET and preparing the car to be tuned soon. I'm planning on upgrading my injectors from 550cc to 740cc and Nistune. I like to keep the motor looking OE hence the question but need to know at which HP will the stock manifold becomes restrictive. Thanks! Specs.... 86.5mm CP pistons Eagle Rods / Bearings ARP head studs Greddy Headgasket Greddy oversized oil pan Forced Performance 20G TD06SL2 DENSO 550cc Injectors N62 Z32 Maf

09-20-2009, 06:56 PM	#2
steve shadows Post Whore! Join Date: Aug 2003 Location: LA and OC Posts: 8,202 Trader Rating: (5) Feedback Score: 5 reviews	The only real thing that these parts limit are capacity The turbo manifold simply limits the choices you can bolt up to it and aslo the options but it doesnt by itself limit your HP possibilities. The Intake Manifold is actually a beneficial part. Keeping the stock IM will actually insure that your turbo spools up VERY FAST and that your throttle response is excellent. I suggest keeping both stock, they are bost highly capable up to 500 whp levels. I would suggest however, upgrading your Throttle Body with a NA JDM SR one which is larger in diam __________________ Like Me on FaceBook !

09-20-2009, 11:11 PM	#4
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	Wait, youre gonna run a TD06 20G turbo bottom mount? Why?!?! Top mount it and go bigger flange that the stock T2. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

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09-20-2009, 07:38 PM	#3
Not You Leaky Injector Join Date: Sep 2009 Location: FailIDA Posts: 119 Trader Rating: (0) Feedback Score: 0 reviews	Agreed, the key is to make EFFICENT horsepower with a good powerband. The stock intake manifold will do great at this, efficent low end tq, and good quick spool. The exhaust manifold is also great at this, however you are limited to the size of turbo you can put on. Stay stock, it looks less flashy and is more efficent.