[Terry Syd]

I just ran my engine through the nozzle calculator and came up with a 1.9 gph nozzle.

Inputs of 3500 rpm
9 psi
2.44 Litres

Does this seem right? I've read else where on the forum that something around a M3 nozzle would be about right.

Are there any special considerations because it is a diesel?

[Dust]

I know that Rocket468 made a comment that the calculator was only applicable to gasoline engines, and DVLdoc suggested that I run an M3 on the 1KZ I was looking at.

[Terry Syd]

Hmm, going from an M2 to an M3 would be a 50% increase in flow. That's a fair bit of an increase. I think I will start with a M2 first, then try the M3. Now I just have to take delivery of the system.

[dvldoc]

Actually the 2.5lte Delcia and 2.8 liter space gears that are running the kit normally go with a M3 and a progressive kit, Gives them more wiggle room later down the road, They are able to start sparying at around 3psi with no bog issuses.

If you go with a boost activated kit i would use the M2 because you don't have the means to reduce flow with the controller. I know one of our ausie customers is running 14psi of boost in his spacegear with the M3 nozzle on a progressive kit, Said its like having a new vehicle.

These vehicles also tend to run outside the box on the nozzle calculator because they make some pretty high EGT's for such a small engine mainly cause there pushing around a lot of weight without much power. The top mount on these is almost worthless and become heat soaked quickly.

I tool around with these often when i am in the Philippines.

[Terry Syd]

I'm sure Pig Bodine and I would be interested in understanding your comment about -

"The top mount on these is almost worthless and become heat soaked quickly."

If this is a reference to where to mount the nozzle, where do you suggest we mount it?

I figured on starting with a M2 at about a 7 psi start on my 9 psi boost. This is all conjecture at this point, as I do not know where my mechanical boost compensator cuts off (5psi? 7psi?). I figure with a bit of alcohol in the mix and starting it at the pressure at the compensator quits adding fuel, I should be able to pick up some more power at the same time I am dampening the EGTs.

[dvldoc]

The top mount IC on the Space gears and Delica also the starex is what i'm talking about,

I'm not familar with that engine so a pic would be very helpfull, On the above vehicles we mount it in the cold pipe of the IC.

[Dust]

That generation surf doesn't have a IC of any kind.

[dvldoc]

I believe this is your motor, I would mount the nozzle just before the bend in the couple on the right or just after it, You could mount it further back but access to tightening the nozzle could be a issue.

[Terry Syd]

Yep, that's it. Would the position of the nozzle just before the bend help to direct the spray into the center of the airstream?

In other words, with the nozzle aiming the spray towards the other wall and the airflow going past, combine to give a direction of spray that would be oriented in the direction of the bend in the conduit? And would this be desirable?

[dvldoc]

Honestly there is so much pressure at the nozzle and CFM volume of air that aiming is not needed It just needs to be in the pipe before the throttle body. You will see what I am talking about when you test spray your system. After looking at it again i would mount the nozzle after the coupler. Just sure you mark were the couple stops at and put the nozzle about 1/2 to 1 inch after that, Yeah your probably on the metric system lol.