MAX boost on B18B????
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From: gravity rides everything...everything will fall, se GA/ne FL
Re: MAX boost on B18B???? (aemcivic_02917)
it's because these Q's get thrown left and right...if you observe the topics everyday, you'll understand. i'll be nice though and tell you not to run much more boost than what kits preset their wastegates. any higher without a good fuel setup just may break something. it's all in tuning i guess you could say.
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From: aliso viejo, ca, usa
Re: MAX boost on B18B???? (aemcivic_02917)
with the correct tuning, 12 psi will last you a year or 2. but i wouldn't go any higher than that. in fact.. i would run 10 psi around town and only turn it up to 12 on the weekends or at the track. but what do i know??
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From: in the LEAVES, USA
Re: MAX boost on B18B???? (supergreenSol)
with the correct tuning, 12 psi will last you a year or 2. but i wouldn't go any higher than that. in fact.. i would run 10 psi around town and only turn it up to 12 on the weekends or at the track. but what do i know??
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From: aliso viejo, ca, usa
Re: MAX boost on B18B???? (2K_TEG)
whatever, I think you could go 2 BAR easy.
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From: RAIDER NATION, CA, USA
Re: MAX boost on B18B???? (BG Boost)
dont do it. a b18b is the worst engine to boost. youre better off getting a supercharger. im boostin 5lbs on my b18b and its still slow. im going to go with a jrsc. try it. 
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From: westchester, ny, usa
Re: MAX boost on B18B???? (dlplayboy)
dont do it. a b18b is the worst engine to boost. youre better off getting a supercharger. im boostin 5lbs on my b18b and its still slow. im going to go with a jrsc. try it.
Smarter than you
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From: Third Coast, united states
Re: MAX boost on B18B???? (Matthew)
With 87 octane, 14 degrees of timing advance and smaller injectors, 2 psi.
Seriously though, your plans for fuel, timing and spark control dictact the motor's life span, not the motor itself.
Here's a link to a LS running 20psi, a block guard, and probably more tuning than Boeing's engineering department.
-matthew
oops, forgot the link: https://honda-tech.com/zerothread?id=138345
[Modified by Matthew, 12:24 AM 6/6/2002]
Seriously though, your plans for fuel, timing and spark control dictact the motor's life span, not the motor itself.
Here's a link to a LS running 20psi, a block guard, and probably more tuning than Boeing's engineering department.
-matthew
oops, forgot the link: https://honda-tech.com/zerothread?id=138345
[Modified by Matthew, 12:24 AM 6/6/2002]
Member
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From: Philadelphia, PA
Re: MAX boost on B18B???? (aemcivic_02917)
Most people seem to agree that 10psi is the maximum if you wanna keep it safe.
BUT, i also hate these questions. There really IS NO RIGHT ANSWER. I have a stock 2nd gen B16a in my car with stock LS pistons pressed onto the rods. I'm personally planning on running well over 10psi, when i finish my electronic boost controller. My friend has an old HF D15 block w/ vtec head, and hes been running 12psi and beating the **** out of it for months. He's running the vafc mod w/ DSM 450s. The head is over 100k, and the block has probably much more than that. I'm pointing this out because the D15s are supposed to be the weakest d-motors of all, the rods look like toothpicks. Maybe its just a tribute to how well the vafc mod works, who knows.
Everyone already said it, but i'll say it again. "ITS ALL ABOUT THE TUNING".
A motor thats detonating can blow at 5psi. If you tune it well you could probably push 3Opsi on a stock block, but if it detonated once it would explode into a million pieces.
BUT, i also hate these questions. There really IS NO RIGHT ANSWER. I have a stock 2nd gen B16a in my car with stock LS pistons pressed onto the rods. I'm personally planning on running well over 10psi, when i finish my electronic boost controller. My friend has an old HF D15 block w/ vtec head, and hes been running 12psi and beating the **** out of it for months. He's running the vafc mod w/ DSM 450s. The head is over 100k, and the block has probably much more than that. I'm pointing this out because the D15s are supposed to be the weakest d-motors of all, the rods look like toothpicks. Maybe its just a tribute to how well the vafc mod works, who knows.
Everyone already said it, but i'll say it again. "ITS ALL ABOUT THE TUNING".
A motor thats detonating can blow at 5psi. If you tune it well you could probably push 3Opsi on a stock block, but if it detonated once it would explode into a million pieces.
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From: RAIDER NATION, CA, USA
Re: MAX boost on B18B???? (hondaeg5)
dont do it. a b18b is the worst engine to boost. youre better off getting a supercharger. im boostin 5lbs on my b18b and its still slow. im going to go with a jrsc. try it. why??
why??
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From: Virginia Beach, VA, USA
Re: MAX boost on B18B???? (NOCARLOSER)
Well, a car actually WON"T blow at 0 psi, or 1psi for that matter becasue if you ever took chemistry, or just know about the much tuning and cars, you know that there is always 14.7 psi on the earth also know as 1 bar, or 1 atmosperic pressure at all times, so at that's why you can take a boost gauge and it stays around 0 calibrated BOOST but when the engine turns on it goes into vaccum there is always 1 bar on the earth just boost gauges are calibrated not to see it... 
But not to sound like too much of a broken record just make sure you spend the money and get it tuned, RIGHT. you'll save alittle bit in the long run by not having to buy it all over again and rebuild it because you blew it up. and work with a machine shop that either races turbo honda's or works with a lot of turbo honda's and run your setup past them, they can give you some very helpfull insight on this kind of information. Hope this helps.
Later,
Sean C.
But not to sound like too much of a broken record just make sure you spend the money and get it tuned, RIGHT. you'll save alittle bit in the long run by not having to buy it all over again and rebuild it because you blew it up. and work with a machine shop that either races turbo honda's or works with a lot of turbo honda's and run your setup past them, they can give you some very helpfull insight on this kind of information. Hope this helps. Later,
Sean C.
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From: NC, USA
Re: MAX boost on B18B???? (RioNinja)
My friend has an old HF D15 block w/ vtec head
Not to be an *** and sorry for derailing the subject. Just curious what VTEC head he has on that 8 valve HF engine. Did he swap out pistons and rods, to accomidate a 16 valve head? I know the HF makes like 60 HP, but it's a torquey little engine. 5K RPM rev-limit though that kinda sucks. Mini-me HF huh? Guess it could be an ultra-cheap junkyard project.
I'm sure he still gets like 40+ miles to the gallon even with the boost, but why an HF?
[Modified by Speed PHreak, 2:55 PM 7/30/2002]
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From: TurBlowVille, SC, USA
Re: MAX boost on B18B???? (Charlie)
I'm working on a new set up now that I will keep a factory bottom end and I plan to be running 19psi daily driven and hopefully should be making around 350 whp, but belive me there will be alot of tuning that will be involved so again I say you can run high psi just as long as you spend the time in tuning everything right.
Lee
[Modified by Rex2nv, 2:55 PM 7/30/2002]
Lee
[Modified by Rex2nv, 2:55 PM 7/30/2002]