OMX-596 - 1996 Spec'd NA6 - Updated 21 Apr 2013

[orx626]

Well today was as stinkin' hot as yesterday . However great progress was made but not as much as I would have liked!

The day began with the fitment of the replacement aluminium radiator from Aluminium Radiators and Engineering. The unit is almost dimensionally the same as the standard item so it uses the standard side brackets and fans. It is a nice bit of kit.






To help reduce the amount of air bypassing the core I added adhesive backed foam (Neoprene) to seal around the fans, and between the radiator and the radiator support panel.




Here are the standard fans bolted onto the radiator....




....and installed in the car. It's nice everything just bolts straight up .






The next mini project for the day was to design and manufacture a heat shield to go between the supercharger and the extractors. It uses an aluminium strong back covered in aluminised fibreglass sheet that is attached by oversized rivets. It leaves a nice air-gap between the supercharger and the heat shield. Here is the result....






Thanks to Saboteur and zoomzoom for the heads up to use the throttle cable from the G-series Bravo ute. With some minor tweaks the cable was absolutely perfect...the standard brackets made the routing of the throttle cable look very factory.




A tweak here....




....and a tweek there.




Soooo this is where I got to when I'd had enough.... mechanically the s'charger install is complete. I even ran it in the standard ECU to make sure the TPS extension was right and to bleed the cooling system. I think it looks great!






The plan for tomorrow is to get the MS PNP and the LM-1 installed so that I can drive it home and re-direct my focus back to the NC. I'll do something with the windscreen washer bottle later.....

Cheers,
Danny

[AJ]

you don't believe in one thing at a time do ya Danny??

nice bit of kit you jammed in that engine bay

[orx626]

It's been a long time coming AJ I've had the supercharger kit since June 2007 and the MS PNP since June 2008.

Enough was enough!!!

....and having a second kid due in June doesn't leave me much time to knock a few projects over

Cheers,
Danny

[AJ]

sounds like you should stop knocking things over to me .................need anyone to take the cars for a blat while ya busy in June???.............be a real nice birthday pressie for me ...........I was born in June as well............one or two years back

[graemebc]

One word ----> Smick! good tip on the Bravo throttle cable

[93_Clubman]

Looks just great - can't wait to read the write-up following today's efforts - many thanks also for the throttle cable tip.

[orx626]

Well I'm ready for the weekend now!!! .....just have to wait another 4 days.

Didn't quite achieve everthing that I wanted to today...should be getting use to that by now!

The main focus of the day was to get the MS PNP installed and working well enough to drive it home.

Here's a sequence of photos of accessing the std ECU.








Thanks to Mokesta for knocking up an extra bracket so that I could utilise the standard ECU mounting brackets.






The MS PNP in position .




The extra bit of wiring I needed to do to complete the MS install was to connect the Intake Air Temp sensor (mounted in the dummy throttle body) to the ECU.




Thanks to zoomzoom for taking me through the basics...it certainly saved me a lot of time. As you can see from the below piccie the car got me home with enough time to give the new turf its first hair cut . With the timing adjusted correctly it now goes extremely well but is noticebly rich. Next weekend's job is to install the wideband (Innovate LC-1) so that real-time fuel map adjustments can be made. It really feels like an engine of a larger displacement now resides under the bonnet . It's just what I was hoping for.



Cheers,
Danny

[Saffa]

Looks good Danny, some nice pics up there.

That radiator looks damn hot!!

[93_Clubman]

Danny, appreciate you have a few projects on the go, & so may not be looking to complicate this one, but have you read about running the TB OEM style with the dummy TB at the back of the SC? Provides better throttle response, but you need to fit a dual port BOV & it's more suited to lower boost kits like the M45. The following is the 11 page thread generated by this topic.

http://forum.miata.net/vb/showthread.php?t=203287

Key pages to get an idea & photos are 5, 7, 9, & 10, but of course there are hints peppered throughout as various forumites experiment.

Coolcatracing starts the thread, but his last 2 posts follow:

I'm intrigued at the number of people who have ventured out and tried this setup. I've done quite a few and continue to tweak the setup a little each time. The stock M45 valve isn't enough in this setup because with the TB in front of it the TB blocks most of the air so the valve really doesn't have to do much. In this setup that metering isn't there so the SC is pumping at full force. And I have always had to use dual action pop off valve/BOV's to make this setup work. Without it the safety pop off feature won't work and the SC will run too much boost and can damage itself.


I use the dual port setup because I haven't seen the need to pipe it back to post MAF. The computer deals with it fine. I found that when I ran a vacuum source to it too it would stay open easier at idle and at part throttle which would cause it to run rich. This is why I just let the bypass valve handle that and let the BOV take care of the boost spikes when shifting. At higher RPM's the bypass valve cannot relieve enough pressure which is why the BOV needs to be there. The optimal setup would be to recirc the BOV and have it also hooked to a vacuum source so it would maintain boost more accurately and the computer would still be happy. The NOPI valve works great and with the slow decline in Greddy quality its really not much worse than the Greddy valve.

[Okibi]

I've seen similar done before too, in one case an electronic throttle body with a pod on the end was used in place of a blow off valve to dump boost.

[93_Clubman]

peoples inventiveness never ceases to amaze me - reminds me of Juffa's old sig about sharing ideas

[orx626]

Danny, appreciate you have a few projects on the go, & so may not be looking to complicate this one, but have you read about running the TB OEM style with the dummy TB at the back of the SC? Provides better throttle response, but you need to fit a dual port BOV & it's more suited to lower boost kits like the M45.

I honestly don't find the throttle response to be any worse than what the BP was with its standard flywheel. I can understand the principles of the modification, but would only invest the time and money if one was to replace the standard inlet manifold with quad throttles (IRTB's).


I got the Innovate LC-1 wideband installed yesterday . Wasted about 3 hours because of incorrect pin out numbering on a plug . The improvement in driveablility was immediate (as it should be). I didn't get a chance to fit the knock sensor and probably won't before the dyno tuning which is booked for the 13th February. BTW, there is a rubber grommet for where the oxygen sensor wire goes through the tunnel .



Cheers,
Danny

[93_Clubman]

As you say if you don't find throttle response to be any worse than a BP with a standard flywheel, then not much point unless you were to replace the standard intake manifold. Look forward to the dyno tuning results.

[orx626]

Small update...replaced the standard AFM which I was using to connect the filter to the intake plumbing with a piece of stainless steel tube. Can't wait to hit the dyno on Friday .

Cheers,
Danny

[Okibi]

It looks like that pipe reduces slightly to accommodate that foam filter, I thought you'd wanna go the other way?