1994 Mazda B2300 2.3l Project

[aerohead]

Between 2014 and 2017 I got enough data to suggest a reasonable probability that SPIRIT could demonstrate as low as Cd 0.168 at the A2 Wind Tunnel.
I think your B2300 was reported at Cd 0.40.
There's a lot of fruit to pick out there.
The YouTube: 'Streamlined Toyota Pickup in the Wind Tunnel' will show some ideas open to all.

[Plush1992]

Originally Posted by aerohead

Between 2014 and 2017 I got enough data to suggest a reasonable probability that SPIRIT could demonstrate as low as Cd 0.168 at the A2 Wind Tunnel.
I think your B2300 was reported at Cd 0.40.
There's a lot of fruit to pick out there.
The YouTube: 'Streamlined Toyota Pickup in the Wind Tunnel' will show some ideas open to all.

Thanks! That link you provided has brought up a ton of ideas for me to work with. Plus a ton of related videos. I think there definitely is a ton of fruit left on the truck especially at a .4cd. Key is for me to properly understand how this truck swims through the air before going head first into upgrades. More I learn more I can tweak

[Plush1992]

Added to the front grill block. The area I blocked off doesn't seem to have any real purpose. I don't think it really helps with cooling and sends a lot of air underneath the truck, right where I don't want it

[aerohead]

Originally Posted by Plush1992

Added to the front grill block. The area I blocked off doesn't seem to have any real purpose. I don't think it really helps with cooling and sends a lot of air underneath the truck, right where I don't want it

Make sure that there's no expensive electronics with heat-sinks that will be starved for cooling air hiding in there.
My Toyota has the ignition igniter module attached to the passenger side inner fender well underneath the airbox, which receives some airflow leakage around the radiator bulkhead. It's spaced off the surface for air circulation. It's full of circuit board. Perhaps some transistors or diodes which require air-cooling.
You'll want as much money for mods as you can, rather than replacement parts for 'cooked' components.

[cRiPpLe_rOoStEr]

Originally Posted by aerohead

Make sure that there's no expensive electronics with heat-sinks that will be starved for cooling air hiding in there.

That's a good point that most people seem to forget, and then when anything goes wrong there will be someone blaming the aeromods...

[Plush1992]

Originally Posted by aerohead

Make sure that there's no expensive electronics with heat-sinks that will be starved for cooling air hiding in there.p

Thankfully there doesn't appear to be. The front bumper design on this truck appears to be an afterthought because the Ford ranger actually has a piece of plastic on it's lower grill intake directing it straight to the radiator. There is none on the Mazda series

[Plush1992]

Looks like I've got a problem. My check engine light likes to come on every now and again for a small breif period of time. Like 5 seconds then off. I ran the KOER test for the OBD1 system twice and came up with a 172 code which indicates the engine is running lean. It could be something simple like I need a new o2 sensor, small vacuum leak or dirty maf sensor.

However this started happening once I switched over to those different fuel injectors.

So what's your guys opinion on this? New fuel injectors at fault? I would of assumed with a slightly higher poundage right on the new injectors it would of been running rich? Should I ignore it and carry on 🤷

[mpgmike]

You found injector data suggesting the new ones flow 16-19 lbs/hr versus stock 14. Is it possible the 16-19 rating was at a higher head pressure than the 14 rating? For example, if the 14 rating was at 63 psi versus the 16-19 psi rating at 47 psi? That would suggest that the new injectors may flow less at the same FP pressure. Just a thought.

[cRiPpLe_rOoStEr]

Makes sense.

[Piotrsko]

Not sure if this is the case but Focus injectors were semi direct replacements back in the day for the hot rodders. They had many more smaller holes and flowed more fuel: your 16-19 rate. Converted my ranger to electric so lost interest, but pulse width was really important. Figure you have mismatched set and one isn't seeing enough to fire every so often. Otoh, I recall my fuel regulation was 50 psi rock solid across several different measuring schemes