How much boost can these engines handle?
05-12-02, 12:20 AM
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How much boost can these engines handle?
Ok, I'm not planning on ever doing this, but just for the heck of it, how much boost can a properly built/tuned 13B REW handle? I've seen piston engines being boosted to 50psi, but I doubt the rotary could take that. What is the most boost anyone has "safely" run?
05-12-02, 03:28 AM
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The stock ECU can only handle 10 psi and you shouldn't increase the boost until you get a new ECU.
13 psi using the stock fuel system and ic is pretty much the most you should run.
13 to 15 psi with an upgraded ECU. ic, and fuel system will be fine.
Anything above this should be used with race gas.
It really comes down to having a car that is properly tuned, using the right products, and not doing stupid things to keep the car running for a really long time.
13 psi using the stock fuel system and ic is pretty much the most you should run.
13 to 15 psi with an upgraded ECU. ic, and fuel system will be fine.
Anything above this should be used with race gas.
It really comes down to having a car that is properly tuned, using the right products, and not doing stupid things to keep the car running for a really long time.
05-12-02, 03:31 AM
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Originally posted by RecKleSs
The stock ECU can only handle 10 psi and you shouldn't increase the boost until you get a new ECU.
Doesn't the stock ECU handle 12 lbs?
The stock ECU can only handle 10 psi and you shouldn't increase the boost until you get a new ECU.
Doesn't the stock ECU handle 12 lbs?
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05-12-02, 04:58 PM
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I was gonna post a Thread asking the same
exact question.. IF the FD3S was totally
built with everything you can do.. So the concensus
is the most boost would be @ 30 psi...
Which leads to my other question..
How much BOOST can a stock twin turbo system
put out??? regardless if the engine blows or not..
IF we are worried about our turbos creeping and
spiking to say @ 15-17psi, with our wastegates open.
So can the turbos say put out maybe 20-25psi????
IT would be nice if we could just turn the boost up
and not worry about Blowing up the motor...
exact question.. IF the FD3S was totally
built with everything you can do.. So the concensus
is the most boost would be @ 30 psi...
Which leads to my other question..
How much BOOST can a stock twin turbo system
put out??? regardless if the engine blows or not..
IF we are worried about our turbos creeping and
spiking to say @ 15-17psi, with our wastegates open.
So can the turbos say put out maybe 20-25psi????
IT would be nice if we could just turn the boost up
and not worry about Blowing up the motor...
05-12-02, 07:50 PM
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The stock turbos are highly ineffiecient after 15 psi, but even at that they won't last long.
Like I said, I don't want to do this-I have a full exhaust and a pettit ecu, and still only boost 10 psi- I just wanted to know what the most anyone has been able to run was.
Razzor, I'm pretty sure it's wiring related, because with a power fc hooked up I could see that the ecu was turning on and off while driving down the road(freaky). So I decided to put a new wiring harness in(along with some other goodies). I sure hope that does it, because if not, that is a buttload of wasted money.
Like I said, I don't want to do this-I have a full exhaust and a pettit ecu, and still only boost 10 psi- I just wanted to know what the most anyone has been able to run was.
Razzor, I'm pretty sure it's wiring related, because with a power fc hooked up I could see that the ecu was turning on and off while driving down the road(freaky). So I decided to put a new wiring harness in(along with some other goodies). I sure hope that does it, because if not, that is a buttload of wasted money.
05-12-02, 08:03 PM
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I ran 15psi on stock twins for almost a year till the secondary crapped out on me. I honestly think you can't run any higher unless you're running race fuel. I think Ari runs about 30psi on his track car.
05-12-02, 08:25 PM
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So what exactly is the limiting factor? Too much heat? Not enough octane? I'm not going to try this, but would it be possible to run a different fuel, like alcohol, and be able to boost more? I know boost isn't the most important thing, I'm just wondering why people are stopping at 30psi. Aftter seeing what some boingers are pushing, I'm just wondering what's holding back the rotary.
05-12-02, 09:56 PM
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I wouldnt run more then 15psi, or 1.0, maybe 1.2 sometimes.... BUT I dont think it matters if your on pump gas or RACE GAS, its still hard on the turbos. Now for the engine that maybe true...
05-12-02, 09:58 PM
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Originally posted by JoeD
im assuming you want to know the conversion to bar??
1 bar = 14.5037 psi
im assuming you want to know the conversion to bar??
1 bar = 14.5037 psi
bar.. But yes I was curious. Your guys boost
gauge reads in kg/ps or something like that
right?
05-12-02, 10:09 PM
#16
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bar measurements are generally eurpean, i thought that they would haev been like that in japan too.
also i thought that 1.0 bar = 14.702psi?
either way, .2 is not too much of a difference..
12lbs = .85, or at least that is what mt avcr said
-louis
also i thought that 1.0 bar = 14.702psi?
either way, .2 is not too much of a difference..
12lbs = .85, or at least that is what mt avcr said
-louis
05-13-02, 01:21 AM
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Originally posted by canman6969
Ya we use kg/cm2. BUT we never use the term bar...
Ya we use kg/cm2. BUT we never use the term bar...
the gay system in the U.S. is PSI which is pounds of pressure per square inch.
05-13-02, 01:32 AM
#20
The stock turbos are supposedly good for about 23 psi..of course anything over 15psi on them for any extended period of time will kill them really fast, but 23psi supposedly is possible on (I dont remember who volunteered for this experiment, but some FD owner did
)
)
05-13-02, 02:36 AM
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checked
Ok, I checked. Joe D is right about the conversion.
I think the original question is an intesting one. Assuming pump gas, and bolt on everything and appropriately built motor, where is the limit.
In answer to Joe D's question, about 2-3 cords per hour assuming a stock north american spec woodchuck on Petco feed chucking 24" seasoned oak rounds.
I think the original question is an intesting one. Assuming pump gas, and bolt on everything and appropriately built motor, where is the limit.
In answer to Joe D's question, about 2-3 cords per hour assuming a stock north american spec woodchuck on Petco feed chucking 24" seasoned oak rounds.
05-13-02, 03:26 AM
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I think the real question is how much boost can the stock 2mm apex seals handle? If you take a stock 13B-REW but use aftermarket turbos, intercooler, and fuel system, how much boost is too much for the stock 13B-REW?