nimblemotors

Thinking of doing this setup on my turbo 12A jetboat.
I have some direct injectors from a 2 stroke. Seems worth the effort?
Anyone with experience?

JackB

nimblemotors

I took a close look at the Fitch injectors, and doesn't look like a good fit, they are just too big diameter to get right down into the housing. I could probably make it work, but it is more a emissions/efficiency thing anyway.

So I picked up some regular fuel injectors, now one could mount these directly into the housing and injected before the compression starts might work a little better, but everyone else seems to do fine dragging the mixture through the tubing, so I guess I can too.
I'm thinking of just hacking up the stock carb manifold, open it up and weld in some injectors bungs into it. I could build one from scratch, but I think the stock one will be ok.

JackB

Ghooble

iTrader: (1)

Wouldn't that just be regular port injection then? I thought Direct Injection would have to be nearer to the Spark Plugs.

nimblemotors

Right, I'm just going to do regular port injection, but what I'm saying is you could do that right into the housing instead of the intake port, probably no real advantage doing it compared to having the hole in the housing, but it would spray into a much bigger area than a port.

John Huijben

iTrader: (1)

Like this? Yes, it can be done, Worth the effort for the average person? Doubt it.

nimblemotors

Yep, inject right into the housing. It can offer nicer 'packaging'. But as said, this isn't 'direct injection' which injects the fuel after some compression has been done, so the fuel doesn't have to move around with the rotor.