What is necessary to safely run 1bar w/ stock turbo?
What is necessary to safely run 1bar w/ stock turbo?
So what parts are necessary to run 14.4psi with stock turbo on an S14 SR20DET as a daily driver? Is it feasable to run 14.4psi on a stock turbo as a daily driver? Heavy throttle says an intercooler, fuel pump, and exhaust should run 15psi and make 230-250hp at the wheels. Is it safe to run that much boost with just an intercooler, fuel pump, and exhaust? At what point do you need rocker arm stoppers? And when is a blow off valve necessary?
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SWIFT_DRIFT
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Nismo_Freak
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Mike,
First off... 1 bar = 14.7 psi
The stock turbo on the S14 motor is a Ball Bearing T28 and will support 14.7 psi well. Pushing over 15 psi on the turbo will only damage it and will produce alot hotter boost temps and can adversly effect performance. The key to running more boost is as follows:
1.) MOTOR (INTERNALS) 2.) FUEL3.) DETONATION PREVENTION4.) COMPRESSOR EFFICIENCY
Ask your self these questions
1.) Will the motor support the power?2.) Do I have enough fuel for the power to be achieved safely?3.) Have I got adequate intercooling?4.) Will my compressor flow the air efficiently?
There are a ton more questions but generally only come into effect later on in the higher boost game... like drivetrain worthyness and other things.
First off... 1 bar = 14.7 psi
The stock turbo on the S14 motor is a Ball Bearing T28 and will support 14.7 psi well. Pushing over 15 psi on the turbo will only damage it and will produce alot hotter boost temps and can adversly effect performance. The key to running more boost is as follows:
1.) MOTOR (INTERNALS) 2.) FUEL3.) DETONATION PREVENTION4.) COMPRESSOR EFFICIENCY
Ask your self these questions
1.) Will the motor support the power?2.) Do I have enough fuel for the power to be achieved safely?3.) Have I got adequate intercooling?4.) Will my compressor flow the air efficiently?
There are a ton more questions but generally only come into effect later on in the higher boost game... like drivetrain worthyness and other things.
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Nismo_Freak
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- Car: 89 Nissan 240SX
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I H8 UR DSM
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Id recommend upgrading the clutch when you do the swap. Its definitly a part that you have no idea (exept for looking at it, which will give you a decent idea) of how much abuse it has taken...its also a lot of labor to change the clutch once its on the car, therefor we usually recommend doing the clutch before you ever install the Sr transmission...definitly go w/ a good quality clutch that meets your driving style, that clutch that comes with it, id say in most cases will start to slip after a couple of months at high boost.
jesse
jesse
This won't help whatsoever, but I just wanted to say there is a Miata in a Street Tire class that run 10.98, and he runs 25lbs of boost through a completely stock block...I gotta rummage through my magazines and find it, but he just said the key was hours upon hours of tuning, and of course a stand alone system. He's the exception to the rule I guess.
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SWIFT_DRIFT
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Quote »Stock by-pass does this just as well... a BOV is just for kicks and giggles.[/quote]
yeah the bov sound is cool, but its added security to the stock by-pass. Yes the stock valve works great for running 7-12 psi...but IMO i would get a bov for running anything higher than that. Id rather pay 250 for a BOV than have boost creep occur and blow something.
yeah the bov sound is cool, but its added security to the stock by-pass. Yes the stock valve works great for running 7-12 psi...but IMO i would get a bov for running anything higher than that. Id rather pay 250 for a BOV than have boost creep occur and blow something.
1. I beleive the engine will handle 400hp with stock internals. When do you need rocker arm stoppers?
2. How big are the stock injectors and how powerful is the stock fuel pump? How do I know how much fuel is necessary?
3. A big front mount intercooler should handle this. Would an oil cooler be necessary at 1bar?
4. What is a compressor? The turbo?
2. How big are the stock injectors and how powerful is the stock fuel pump? How do I know how much fuel is necessary?
3. A big front mount intercooler should handle this. Would an oil cooler be necessary at 1bar?
4. What is a compressor? The turbo?
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Daunttless
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1. After 400. : ) You'll need a lot more than rocker arm stoppers after 350rwhp.
2. 380cc, you shouldn't have the stock fuel pump you should have the walbro 255 or so, I would suggest at least 640ccs for 400 horsepower, you'll probably want 720s to be safe and keep the duty cycle lower.
3. Oil works good at a midrange temperature, if you cool the oil too much you'll have problems, if it gets too hot you'll have problems, the best way to tell if you need an oil cooler is go for a spirited drive with an oil temp sensor, and then find out what the appropriate viscosity and heat range for the oil you use is, if you are too high, get a cooler, chances are you aren't too low. : )
4. A turbo is comprised of a Compressor and a Turbine. The compressor side is what compresses the air for the engine, the turbine side is what powers the compressor. : )
2. 380cc, you shouldn't have the stock fuel pump you should have the walbro 255 or so, I would suggest at least 640ccs for 400 horsepower, you'll probably want 720s to be safe and keep the duty cycle lower.
3. Oil works good at a midrange temperature, if you cool the oil too much you'll have problems, if it gets too hot you'll have problems, the best way to tell if you need an oil cooler is go for a spirited drive with an oil temp sensor, and then find out what the appropriate viscosity and heat range for the oil you use is, if you are too high, get a cooler, chances are you aren't too low. : )
4. A turbo is comprised of a Compressor and a Turbine. The compressor side is what compresses the air for the engine, the turbine side is what powers the compressor. : )