FJO sequential setup pics
 

Since the FJO AI controller is "potted" I decided to place it above the cruise control on my Touring.

The AI nozzles/injectors were located as close as possible to my SMIC, in the hope of better atomization. More importantly, I didn't want to install a bung on the Greddy elbow. I left a some space so I can re-locatethe air-temp sensor along with a fast-acting one in the future.

I decided to use the front wiper-tank, so I got a new one and due to space constraints of the horn, I mounted the FJO pump on the passenger/left side using two custom fabricated brackets.

I tested to make sure gravity feeds the pump. I also "insulated" any place of rubbing or contact with the A/C condenser or PS lines using some old rubber hose.

While talking with FJO technical support, he suggested using RPM vs MAP for road/circuit use, as water delivery can grow as the RPM's increase plus boost.

He also suggested using the "tach" signal vs. the coil/ignitor signal, as a true tach signal is cleaner.

Due to the location of the pump, I did have to cut a small piece for the lower panel to clear and fit in all mounting holes.

Zip-ties are your friend.

Hope it helps!

:-) neil

More pics.

:-) neil

This reliability mod really kept engine temps down while on the track, last weekend.

It was 93-F, and 85% humidity, and the car would do two (2) twenty-minute (20-mins) sessions back-to-back, and the most the water-temp would get on the track was 215-F.

After a cool-down lap, she would be running about 210-F, sometimes 200-F, with 100% distilled water.

We tried 35% methanol, and she ran too rich.

The exhaust tip is looking very clean now.

:-) neil

thanks Neil and congratulations. i would like to post this in the big thread in the 3rd gen section so more owners can benefit.

actually, i would prefer it if you were to post it. the community NEEDS real world testimonials.

link: https://www.rx7club.com/3rd-generation-specific-1993-2002-16/making-case-rotary-powered-fd-fix-806104/

road racing is THE most challenging venue for the turbo'd FD and it is great you were able to tame the thermal beast.

howard

BTW, i suggest 2 oil coolers...

hc

Howard,

thanks for the kind words.

I already have installed two (2) stock oil cooler.

I'll post a write-up and some pics soon.

An update on the installation:

1) the water/meth injector was turned 90-degrees to better clear the hood;
2) the FJO "blackbox" was re-located under the cruise-control towards the firewall, using one of the cruise-control screws to mount.

BTW: I also just hooked-up my Innovate wide-band, and an extra bung for EGT temps . . .

:-) neil

UPDATE: the last two events (Roebling Road and Grand Prize of America) were both in 102+F (heat index of 110-F)with 90%+ humdity, and I was hammering on the car (stock sequential turbos running 14-lbs).

As such, water temps were 245+F with oil temps at 220F (dual R1 coolers). This was with synthetic oil (OMP removed), Koyo Radiator, 30% antifreeze, factory A/C, and running 100% distlled water.

I then tried it with a 50% methanol and 50% distilled water, and my water-temps went down to 220-F, and oil-temps were 210-F.

:-) neil