Methanol/Water Injection
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From: Hendersonville, NC
Bob, do you think a blow-off valve would help to solve some of our boost tube issues? It seems that even though you might lose a slight bit of performance, it would be worth it. Installation of one should be relatively simple, and we could install a valve behind it to disable it at the track; maybe even an electric soleniod with inside-the-cab controls. I think a blow-off valve might have saved my motor.... 
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From: Dallas
Originally Posted by PSD 60L Fx4
Aha! I found the answer to my own question, if anyone would like to know. You can install 02 sensors on a diesel just like a gas engine. The stoichometric ratio difference between gas and diesel is within 1/10 of the same; therefore (according to RSR, http://www.rbracing-rsr.com/rsrgauge.htm) the 02 sensors from a gas engine should work just fine. I will call this company tomorrow to confirm this; it will mucho simplify this issue.
I just need to set the nitrous cutoff with a little bit of leeway, since it will be off a small amount. It should work fine as a saftey device, however. And yes, Bob, I will call Ken E. to confirm it with him also. I suppose a lean fuel mixture with nitrous is not something to fool around with; I would be willing to bet you would know. Have you ever had one lean out on you?
I just need to set the nitrous cutoff with a little bit of leeway, since it will be off a small amount. It should work fine as a saftey device, however. And yes, Bob, I will call Ken E. to confirm it with him also. I suppose a lean fuel mixture with nitrous is not something to fool around with; I would be willing to bet you would know. Have you ever had one lean out on you?
The way you have a safety margin with a gas engine is to run it 10% rich. The problem with running a diesel rich is it will raise cylinder pressures. Using nitrous on a diesel engine will take some careful balancing.
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From: Hendersonville, NC
The way mine will be set up will be with a secondary computer program. With the electronics of the system Ken uses, it will be similar to the way a bullydog flip chip or something similar works. When you kick on the nitrous, the system switches from a stoichometrically correct program to one that provides enough fuel to burn with the nitrous; when the flow of nitrous ceases the program switches back. This is the way I understood him. I suppose he already has a program to use, I do not know. The cylinders should be quite durable with the c-rings; i do not plan on using a system that will really push the limit. His systems run up to 350 horsepower; i think i will go with one around 250, in conjuction with the propane system.
If you run a gas engine 10% rich all the time, wouldnt that destroy your gas mileage? I suppose it wouldnt matter on a drag car, but on a street car? I assume you use dry systems. Have you ever used a wet one? That is a big no-no on a diesel.
If you run a gas engine 10% rich all the time, wouldnt that destroy your gas mileage? I suppose it wouldnt matter on a drag car, but on a street car? I assume you use dry systems. Have you ever used a wet one? That is a big no-no on a diesel.
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From: Dallas
Originally Posted by PSD 60L Fx4
Bob, do you think a blow-off valve would help to solve some of our boost tube issues? It seems that even though you might lose a slight bit of performance, it would be worth it. Installation of one should be relatively simple, and we could install a valve behind it to disable it at the track; maybe even an electric soleniod with inside-the-cab controls. I think a blow-off valve might have saved my motor....
I think the PCM controls the vanes in the turbine housing to the same effect.
Adding another might screw up the works! It would be another question to ask your Hot Rod Diesel guy.
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From: Hendersonville, NC
Originally Posted by Choctaw Bob
It's called a waste gate. They are available through all the Mustang turbo people. I've even got a couple of them under my work bench.
I think the PCM controls the vanes in the turbine housing to the same effect.
Adding another might screw up the works! It would be another question to ask your Hot Rod Diesel guy.
I think the PCM controls the vanes in the turbine housing to the same effect.
Adding another might screw up the works! It would be another question to ask your Hot Rod Diesel guy.
By the way, is a blow-off valve and wastegate the same thing? I thought there was a difference...
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From: Dallas
Originally Posted by PSD 60L Fx4
The way mine will be set up will be with a secondary computer program. With the electronics of the system Ken uses, it will be similar to the way a bullydog flip chip or something similar works. When you kick on the nitrous, the system switches from a stoichometrically correct program to one that provides enough fuel to burn with the nitrous; when the flow of nitrous ceases the program switches back. This is the way I understood him. I suppose he already has a program to use, I do not know. The cylinders should be quite durable with the c-rings; i do not plan on using a system that will really push the limit. His systems run up to 350 horsepower; i think i will go with one around 250, in conjuction with the propane system.
If you run a gas engine 10% rich all the time, wouldnt that destroy your gas mileage? I suppose it wouldnt matter on a drag car, but on a street car? I assume you use dry systems. Have you ever used a wet one? That is a big no-no on a diesel.
If you run a gas engine 10% rich all the time, wouldnt that destroy your gas mileage? I suppose it wouldnt matter on a drag car, but on a street car? I assume you use dry systems. Have you ever used a wet one? That is a big no-no on a diesel.
The wet nitrous systems have their own fuel system. Seperate pump, lines regulator and sometimes a seperate fuel cell for race gas only. The last system I had was on the car in my avatar. It was a two stage fogger/plate system set at 300/150 shots. I could have run more but the extra power just blew the tires away. It ran 8.90 @160
even though it ran in a class called "True Street" it was far from a street car.
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From: Dallas
Originally Posted by PSD 60L Fx4
You raise a good point there. One would definately need to carry out thier research. However, on mine, when i blew it up, i probably had the vanes WIDE OPEN and was still overboosting. I suppose what i was doing was borderline abuse, I just wonder if it would have saved me in my situation. If you could set it just to function at a point where you risk endangering the engine, it would be a good safeguard. I suppose the problem lies in, where do you draw the line between safe and dangerous? without sacrificing performance?
By the way, is a blow-off valve and wastegate the same thing? I thought there was a difference...
By the way, is a blow-off valve and wastegate the same thing? I thought there was a difference...
Diesels need all the air you can force in them. The richer they get, the more they detonate.
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From: 3rd Rock
Originally Posted by Choctaw Bob
I guess it shows my ignorance, I haven't heard of a blow off valve.
Diesels need all the air you can force in them. The richer they get, the more they detonate.
Diesels need all the air you can force in them. The richer they get, the more they detonate.
Blow disk or.....
Waste gate is a reusable pop off...............correct
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Former Vendor
Joined: Mar 2004
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From: Hendersonville, NC
Originally Posted by Choctaw Bob
I guess it shows my ignorance, I haven't heard of a blow off valve.
Diesels need all the air you can force in them. The richer they get, the more they detonate.
Diesels need all the air you can force in them. The richer they get, the more they detonate.
Former Vendor
Joined: Mar 2004
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From: Hendersonville, NC
Originally Posted by Tim Lamkin
The "blow off" is the same as a pop off, pre set to release PSI.........correct?
Blow disk or.....
Waste gate is a reusable pop off...............correct
Blow disk or.....
Waste gate is a reusable pop off...............correct
Bob, if you get a chance get yourself an AIM screen name
www.aim.com
its free, just download the software from AOL and sign up for a screen name.
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From: Dallas
Originally Posted by PSD 60L Fx4
On the ricers, what is known as a blow-off valve is simply a valve such as what is on an air compressor; it vents any boost air that is above a certain preset pressure and is simply drilled and tapped on any point between the turbocharger and intake, on the pressurized side.. It simply blows the air out under the hood, resulting in a cool noise. If i am not mistaken, a wastegate dumps the excess out the exhaust?
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From: Dallas
Originally Posted by PSD 60L Fx4
Any luck with the AIM, Bob?
Former Vendor
Joined: Mar 2004
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From: Hendersonville, NC
You too. Im getting sleepy...maybe tonight, someone who will remain nameless *clears throat, JENNA* wont roll over and want me to ride with them to taco bell at 1:30 in the morning....so i might get some sleep!