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Old 02-13-2010, 02:03 AM   #1
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Default Stock 1.6......How much boost?

How much boost can a stock 1.6 engine handle without having to do any major engine work?
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Old 02-13-2010, 02:07 AM   #2
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17.3psi for 17 minutes, then it goes boom.
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Old 02-13-2010, 02:15 AM   #3
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Bond, you're an idiot, everyone knows it's 17.2 and if you go 1/10th of a pound over that it detonates.
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Old 02-13-2010, 02:19 AM   #4
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It may detonate, but it will last for 17 minutes
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Old 02-13-2010, 02:24 AM   #5
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Basically they're Saying it all varies between motors, and how good your tune is. And you'll figure out how much boost is too much if you read about half of the threads here.
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Old 02-13-2010, 02:29 AM   #6
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why cant anyone ever answer questions honestly? Do you think that answer of yours did anything for me other than **** me off? People like you are why I hate forums! I am only here for the select few that can actually pass on some useful info. Please be serious!
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Old 02-13-2010, 02:33 AM   #7
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Quote:
Originally Posted by Diablovt750 View Post
why cant anyone ever answer questions honestly? Do you think that answer of your do anything for me other than **** me off? People like you are why I hate forums! I am only here for the select few that can actually pass on some useful info. Please be serious!
THERE'S NO WAY TO ANSWER YOUR QUESTION. YOU HAVE REQUESTED THE IMPOSSIBLE. And I'm not being funny. Really, your question of "how much boost can a 1.6 take" can be answered a thousand ways. On a tiny T25 300ZX turbo, you can hit 17psi ALL DAY, but on a gt4088R, 17psi will destroy it. Then of course, there's the several other factors as to intercooler type / charge temps, fuel injectors/pressure/rail, engine management, downpipe/manifold, etc etc.

SO PLEASE STOP ASKING QUESTIONS THAT CAN'T BE ANSWERED AND NOT EXPECT TO TAKE IT UP THE ***.

moooooooaaaaaaaaaaaaaaaaaaaaaar booost!
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Old 02-13-2010, 02:37 AM   #8
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First boost is a relative term. 10 psi on a GT 2560 does not = 10 psi GT30R. Its better to think of WHP which our blocks tend to start bending rods around 240-250 whp. So safely i would expect 220 whp (although we have had failures this low).
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Old 02-13-2010, 02:37 AM   #9
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Quote:
Originally Posted by Diablovt750 View Post
why cant anyone ever answer questions honestly? Do you think that answer of your do anything for me other than **** me off? People like you are why I hate forums! I am only here for the select few that can actually pass on some useful info. Please be serious!
This sounds like a job for...

Ok, allow me to answer your question honestly and directly: There is no single, straightforward, direct answer.

(That was the answer.)

Too many variables affect the performance of the turbo system, the engine's ability to turn air into power, the engine's ability not to destroy itself, etc.

One of the most important things you need to realize is that there is simply not a fixed relationship between PSI and power, even assuming the engine itself to be a constant.

I could run 50 PSI reliably on a stock bottom end if I simply installed cams with 0.1" lift. I'd probably make about 40 HP.

Conversely, I could break all four pistons in half with only 10 PSI if I tried hard enough.

Even if fuel and ignition timing are absolutely optimal, the exhaust is wide open, etc., you'll still get more power using, say, a GT2860 turbo at 10 PSI than you will out of a GT2554 at 13 PSI. Until you understand why this is, I'd suggest not experimenting to see how much boost your engine will take.


I cannot strongly enough suggest that you obtain this book and read it: Amazon.com: Maximum Boost: Designing, Testing, and Installing Turbocharger Systems (Engineering and Performance) (9780837601601): Corky Bell: Books
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Old 02-13-2010, 02:48 AM   #10
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Quote:
Originally Posted by Diablovt750 View Post
why cant anyone ever answer questions honestly? Do you think that answer of yours did anything for me other than **** me off? People like you are why I hate forums! I am only here for the select few that can actually pass on some useful info. Please be serious!
It's all in the tune. Read\Read more\Read more again\think\post in that order, or you will never be taken seriously.

Joe knows all, get that book.
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Old 02-13-2010, 02:57 AM   #11
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I could run 50 PSI reliably on a stock bottom end if I simply installed cams with 0.1" lift. I'd probably make about 40 HP.
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Old 02-13-2010, 12:20 PM   #12
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given your knowledge of boost i predict any positive manifold pressure would thrash even a factory boosted motor so plz, either read and learn for yourself or /end yourself and go drive a kia.
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Old 02-13-2010, 12:32 PM   #13
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depends on turbo size, two turbos can flow 10psi but each one has a different flow rate, how much air is being pushed in at that psi which raises cylinder pressure = boom. a friend of mine that is on this forum is pushing 16psi with water/meth injection and his **** is running hard. stock 1.6l in a 90'
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Old 02-13-2010, 12:45 PM   #14
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Quote:
Originally Posted by Clos561 View Post
depends on turbo size, two turbos can flow 10psi but each one has a different flow rate, how much air is being pushed in at that psi which raises cylinder pressure = boom. a friend of mine that is on this forum is pushing 16psi with water/meth injection and his **** is running hard. stock 1.6l in a 90'
What turbo? How much power?
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Old 02-13-2010, 12:53 PM   #15
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ebay turbo, 247 last dyno. tyson87 on this forum
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Old 02-13-2010, 02:11 PM   #16
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What you wrote:
Quote:
Originally Posted by Clos561 View Post
ebay turbo, 247 last dyno. tyson87 on this forum
What I heard:

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Originally Posted by Clos561 View Post
hot dog, bauxite, dave matthews band, sex with a horse!
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Old 02-13-2010, 02:30 PM   #17
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Quote:
Originally Posted by Diablovt750 View Post
How much boost can a stock 1.6 engine handle without having to do any major engine work?
On a good tune, the stock motor is good for a reliable 200-220rwtq. anything above that and you're playing with fire.

It is also said, anything above 12psi regardless of the mass airflow behind it and the rings will fail, however, I have seen no real evidence of this, it's the rule of thumb that FM and BEGi adhere to.
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Old 02-13-2010, 04:03 PM   #18
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Right then, on to more pressing matters gentlemen. I have been wondering for some time, How much do heavy things weigh?
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Old 02-13-2010, 04:17 PM   #19
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Im an idiot but I have to "get more better knowledge" Learn how to speak before you talk ****!

Thank you Braineack! You seem to be the only person in this forum that answers anything seriously. What people dont realize is that they were once new to this as well, so how am I supposed to learn when you guys just give me smart *** answers and mock me?
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Old 02-13-2010, 04:20 PM   #20
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I've been here two years, lurk everyday and still learning. See my post count? Use the search function :/.
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