Hey all,
I've been lurking a long time, but topics like this bring me out sometimes.
The center of my effort is an intake manifold that I'm building. I'm an engineering student (3rd year) so I've got a few 3D design tools at my disposal. And a spare head. And an injection setup off a v6. Also I have access to milling machines and through a co-op, some time on a CNC mill. And you add it all together and you get this.
Yes, those are 4 injectors per port.
I had always figured on 2 injectors per port so I'd have more flexibility in chosing injectors and controlling them. But for the effort required to convert to EFI and build a custom setup, why stop there? The two injector on the steepest angle (rear injectors) are to be for the lowest, cheapest octane I can buy. They'll run 98% of the time and do most of the work. The secondary injectors (at only 20 degrees or so) are for race fuel. Probaly 100 octane anyways, possibly much more. I've build a Megasquirt controller and I understand it will be more than capable of running both injector setups. The primary fuel system I haven't quite figured yet, whether I'll go surge tank or in tank pump. The secondary will probably involve a small fuel cell.
I've got a long range goal of adding a turbo to this engine and I think the practical availability of high octane fuel will make it very easy and very safe to apply quite a bit of boost to this engine. I intend to boost this thing like there's no tomorrow. And if I break it, or it doesn't work as well as I hope, well that's always a chance. I'll have tried something different.
A few notes. This isn't quite my lastest version so a few things are off. I haven't decided how to do the rest of the intake. Probably one throttle body at the front mounted horizontally so I could feed into it from an intercooler. Also the fuel rail is huge in that pic, a size larger than I intend to make it. I can't recall the -an size, but that pic has it too large.
As of right now I am focusing on thos 3 blocks that mount the injectors. I programmed and CNCed the inside profiles with a ball end cutter (kudos to a member for that suggestion). That's done. I've machined 1 block for injectors, but that's all. I wanted time to look over the 4 injectors idea. Now I'm hoping to get machining the rest of them in the next month.
And no, I won't promise anything soon because I actually started on this over a year ago. And I'm probably going to take that much more time.
Any comments you guys have would be really appreciated. I got a lot of ideas from this board.
