That intake looks a lot less efficient than the stock intake. Much smaller passageways.
Lol, that is a stock intake photo I ripped off of Google just to show my idea in a picture.That intake looks a lot less efficient than the stock intake. Much smaller passageways.
Yeah, using a Weber 38/38, I wonder if 1 38 side could feed 3 cylinders. I honestly don't know. But I think the firing order would keep it from reversing air flow in this type of setup. But I really am not sure.I think it has to do with less reversal of airflow, the best I can explain.
To be honest, as I learn more and more about Jeeps, there could be some reorganizing, IMHO of the site. The YJ guys and CJ guys are separated, but we have the same engines, so to speak, lol. Go figure!!Ah, that explains it.
Yes, less efficient than the 242 intake.
Really wish this friggin' forum still had the Jeep information clearly visible.
Alas, but the CJ guys got the cool engines. No AMC 401s for us. 😢To be honest, as I learn more and more about Jeeps, there could be some reorganizing, IMHO of the site. The YJ guys and CJ guys are separated, but we have the same engines, so to speak, lol. Go figure!!
Agreed, it probably is, lol. But come on, you know I like to tinker!! Supposedly Dual Planes are better for low end TQ?Three side-drafts and weld your own intakes?
Reversion is probably a non-issue for practical hp gains in a jeep
I wouldn't disagree with you on that, lol. But I like learning these things.Just build a stroker already and quit chasing these 1hp rabbit holes.
Still reading, holy cow, there is some awesome stuff in there!! Those guys dive deep, lol. Talking about how the Speed of Sound vs slower A/F mixture speeds, how super chargers can slow the speed while also filling the cylinders, etc. When they talk about the speed, and how it can naturally "force" air into an area and make it harder to bounce back, from valve closing, I thought of when I was looking into Velocity Stacks. Supposedly, they help in this arena, because of the fact they allow more air in easier, they actually can help "stuff" air into an intake and keep the flow in 1 direction. Interesting take on it. Anyhow, thanks for sharing that, @MrCamo !!!
Yeah, from what I've seen, you are spot on. What you describe is exactly what I've heard as well, hence my interest in them, low RPM torque. In fact, people say they even idle better/stronger. Again, to support what you say, basically better vac Signal, even while barely "working".I would have to re read the entire thread before I jumped in to make sure that I am not off base but I will gamble my reputation on sounding smart vs sounding stupid.
A dual plane works better at lower RPMs because it divides the intake in half. At lower RPMS the engine is pumping less air and whatever cylinder is trying to draw air and create a vacuum, it has to create a vacuum in the entire intake manifold. That is a lot of volume to create a negative pressure in. So if you cut an intake into half essentially, it has a smaller volume or area that it is trying to bring into a negative pressure or vacuum.
When you get to a higher RPM, the rest of the cylinders can help the other 7 more (speaking in V8 terms) in the intake when it comes to achieving the negative pressure or vacuum