Barton's NA6

[bartmanftw]

Intake fitted but not finished. Need to weld on some hose barbs for bov return and crank case ventilation as well as change the last silicone joiner to a 45 degree to get the air filter away from the exhaust.
Definitely also needs a heat shield over the turbo and manifold.



Also if you're wondering, the black thing in the intake pipe is a GM MAF.

[93_Clubman]

Great work!

[bartmanftw]

Car is up and running now although not quite finished. Moved the intake over a bit with a 45 degree joiner however I need to figure out how to get air from outside the engine bay to improve intake temperaturs further. Obvious choice is to cut a hole in the firewall and get air from the cowl area but not sure how I feed about cutting into the car for that.



Intake temps aren't too bad anyway but could possibly be improved with a cold air intake.
Did a test on the freeway at 100km/h when ambient temp was ~28degC. Held WOT while holding the handbrake to prevent vehicle speed from increasing for about 11 seconds. Intake temps increased ~10 degrees over that time from 33 to 44. Boost pressure was 140kPa so going higher should make the temp increase worse.

[3gress]

Interesting build mate.
Keen to see how the water to air charge cooler setup performs. I have always figured I'd use a pwr air/water heat exchanger if I ever get around to installing the rotrex charger kit.

[bartmanftw]

Couple of updates.

Swapped my OEM hardtop out for a Lightyear carbon fibre one.



Nice weight saving but did require a bit of work adding seals to the side windows and I might need to re-seal the rear window since it might leak in heavy rain. Not a huge deal though..

Also had some some help making a heat shield for the turbo and manifold. Very happy with the end result. Definitely helps keep the components over on that side of the engine bay a bit cooler which is good since my relay controller for the water pump is located there. I had some concern with how well it would continue to work when getting very hot.



I have also added a radium fuel pressure regulator housing with a Bosch 60psi regulator and a NB8B fuel rail to create a returnless system. Well its sort of returnless since the fuel still comes up to the regulator and then back to the tank however it no longer passes through the fuel rail. Made for simpler hose routing and possibly will reduce fuel temps. The regulator is still manifold vacuum referenced as well. Can see it located just behind the intake manifold. Now I have to go back and re-calibrate my fuel tables...not a huge deal since the plan is to get the GM MAF working and use that for steady state fuel calculations anyway.

[bartmanftw]

I haven't really had much time for this car over the last year due to work but a few things have happened.

Forgot to show the relays I added for the secondary radiator fan and intercooler pump




Harness plugs into the original blanked AC relay connector under the drivers headlight.

Swapped my 6ULs for some Advanti Storms 15x9.



I also recently took out the MS3x ECU to add a MAF frequency input but I can't stand how messy it all is after all the changes I've made over the years so I've decided to design an adapter board to use a MS3pro gen1 ECU I have been holding onto.
I've made something similar for a mates RX7 FD however I'll be adding a few more things onto the adapter board like a secondary 5V reference voltage supply so that if there is a short the ECU will still keep running.

[bartmanftw]

MS3pro PCB adapter board is assembled! Now just need to make the patch harness to go between this board and the ms3pro. Just waiting on some new wire to do that. The board has a USB and serial connector for communication to the ECU, two superseal connectors (commonly used on aftermarket ECUs like Motec and Haltechs), the MX-5 ECU connector to match the OEM harness, some pull-up resistors for things like temperature sensors etc, and a relay to control power to the wideband controller.



I've also got my MAF working and roughed in a airflow curve for it. Very easy to calibrate however it doesn't appear to be accurately measuring low airflow around idle, probably since it's in a 3" pipe and there's a bend right before the MAF. In the future I will replace the pipe with one that has airflow straighteners which should fix it but for now I can canfigure the ECU to blend the old speed-density tune at low airflow.



I also installed a set of superpro poly bushes in the a-arms so needed to get a wheel alignment.



Bonus picture of my cat in a box.

[lucmor444]

Who did your alignment Alex?

[bartmanftw]

Who did your alignment Alex?

MyCar which used to be Kmart tyre and auto. They've got a laser alignment machine and got it to the specs I wanted.

[lucmor444]

Who did your alignment Alex?

MyCar which used to be Kmart tyre and auto. They've got a laser alignment machine and got it to the specs I wanted.

Thx

[bartmanftw]

Finally had a bit of free time so finished off my ms3pro adapter...well amost. It still needs a case for the adapter board.

I bought various wire colours in the sizes I needed to make it easier to identify circuits. There's still duplicates however it's still better than having them all the same colour.


I had a bit of 'help' cutting and crimping.





Hopefully will fit neatly under the passenger kick panel. The extra connector is to supply power to the wideband as well as CAN communication.

[lucmor444]

That's very neat.

[beavis]

I agree, that looks lovely.
What's now stopping you from getting this installed and running?

[bartmanftw]

I agree, that looks lovely.
What's now stopping you from getting this installed and running?

Thanks

Not much. It will plug right in however I am using a third extra connector on my current ECU so I need to move all those circuits into empty cavities in the OEM ECU connectors. Only 10 circuits so won't take too long to do.

[MX5NBpsi]

Its very neat as per usual.whats the reason for the MAF why not use MAP sensors like the rest of us plebs?