Hello guys, I am in the process of a futile effort to get big power out of a V6, and have questions about intake manifolds, and their flow balance to each cylinder in nitrous applications.
I have a 3.8 supercahrged V6 in a 1990 Thunderchicken supercoupe.
I currently have a 75HP shot on a dry setup of nitrous. I have converted the system to a wet kit, with a fogger nozzle, but not quite done, as one of the solenoids went bad, and haven't gotten a chance to replace it yet.
In the near future, I am going to be running a modified bottom end with home ported heads, and a little bigger cam. The shortblock has been outfitted with eagle H-beam conn rods, and custom forged pistons, and I've already got all the bolt-ons waiting to for the new engine (75mm TB,76mm MAF, 42lb injectors, SC overdive pulley, EEC tuner device for tuning, etc etc).
There are guys that have sucessfully run 100-125 HP shots of N2O in these engines, but some of them may have completely custom made intake manifolds, or modified their intake manifolds in ways that they probably don't care to share the details of.
There is a modification to the intake manifold that some have done which increases the volume of the intake manifold, which is suppose to help out on the top end. I donnot know however, if any of the folks running this modified intake use N2O...
The stock intake manifold pictured below shows the location of what some have called an "air divider" which some say was placed there to direct flow (which I can't understand how it would be a probelm in a blown application, as it woud be under pressure). Other have said that this triangle was put there for structural support, and some even think it could just have been put there to somehow aid in the manufacturing proceess??? I do not know what its purpose is, but some say that its removal, and the increased volume helps out in higher RPMs....
The details of the midfication are discussed in the "howto" here:
https://www.mn12performance.com/mn12how-to/intake/intake-howto.html
I have been warned that this modification would change the balance of of flow between cylinders, which may not be bad in a fuel injected and blown application where the fuel isn't deliverd until the injectors... But could become an issue if uneven nitrous/fuel mixture is introduced in unbalaned portions between cylinders.
My first thought is that there has to be plenty of V8 intakes that aren't particularly well balanced, running 200+HP shots of the juice...
I would think that distrobution would have to be particularly bad in a 4 cylinder or straight 6, not that I am aware of anyone using N2O with a straight six, but I'm sure someone is (aren't some of those ricer types running a straight 6?). I would imagine that if N2O is OK on a unbalanced 4-6 cylinder intake, it would have to work OK on this one...
Does anyone have any input on wether this is a bad idea or not?
Thanks guys!
I have a 3.8 supercahrged V6 in a 1990 Thunderchicken supercoupe.
I currently have a 75HP shot on a dry setup of nitrous. I have converted the system to a wet kit, with a fogger nozzle, but not quite done, as one of the solenoids went bad, and haven't gotten a chance to replace it yet.
In the near future, I am going to be running a modified bottom end with home ported heads, and a little bigger cam. The shortblock has been outfitted with eagle H-beam conn rods, and custom forged pistons, and I've already got all the bolt-ons waiting to for the new engine (75mm TB,76mm MAF, 42lb injectors, SC overdive pulley, EEC tuner device for tuning, etc etc).
There are guys that have sucessfully run 100-125 HP shots of N2O in these engines, but some of them may have completely custom made intake manifolds, or modified their intake manifolds in ways that they probably don't care to share the details of.
There is a modification to the intake manifold that some have done which increases the volume of the intake manifold, which is suppose to help out on the top end. I donnot know however, if any of the folks running this modified intake use N2O...
The stock intake manifold pictured below shows the location of what some have called an "air divider" which some say was placed there to direct flow (which I can't understand how it would be a probelm in a blown application, as it woud be under pressure). Other have said that this triangle was put there for structural support, and some even think it could just have been put there to somehow aid in the manufacturing proceess??? I do not know what its purpose is, but some say that its removal, and the increased volume helps out in higher RPMs....
The details of the midfication are discussed in the "howto" here:
https://www.mn12performance.com/mn12how-to/intake/intake-howto.html
I have been warned that this modification would change the balance of of flow between cylinders, which may not be bad in a fuel injected and blown application where the fuel isn't deliverd until the injectors... But could become an issue if uneven nitrous/fuel mixture is introduced in unbalaned portions between cylinders.
My first thought is that there has to be plenty of V8 intakes that aren't particularly well balanced, running 200+HP shots of the juice...
I would think that distrobution would have to be particularly bad in a 4 cylinder or straight 6, not that I am aware of anyone using N2O with a straight six, but I'm sure someone is (aren't some of those ricer types running a straight 6?). I would imagine that if N2O is OK on a unbalanced 4-6 cylinder intake, it would have to work OK on this one...
Does anyone have any input on wether this is a bad idea or not?
Thanks guys!