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McTinkerson
Jul 5, 2007

Dreaming of Shock Diamonds

AKA "A rotary and its supports vehicle"

In support of my entry into the TM2TW3 rally and also attempting to force myself to continue to stay active on SA, it's about time I started a thread on both long-term projects.

The primary focus will be on a 2006 Mazda RX-8. This specific one is the reason my wife and I met. It was a graduation present she bought herself. There is some serious sentimental value attached to it and thus, it will never be sold and I am also incredibly reluctant to turn it into a rally-x car.

Up until last summer, however, it has been a daily.

It will continue to be driven year long. Yes, those are Super Advans from my old FC being used as winter wheels. They fit perfectly (17x8 +35) and I spent way too long tracking down a set to not use them.

The second vehicle is the counter-jinx to the Mazda Renesis side exhaust ports and rotor side seal failure. (More on this later.)

A 2015 Ford F-150 which as it turns out is basically a unicorn due to its specific options. Those being 3.5 EcoBoost, rear wheel drive, max tow package, e-locker and bench seats. I figured that if I have something that can tow the 8, it should never leave me stranded. It's worked out pretty well so far.

So what are the goals for each?

RX-8
Short Term
  • All the reliability mods to keep a rotary happy and healthy
  • Usual km based maintenance replacing worn out parts with upgraded versions
  • JPS livery to keep the theme going that the wifes Martini Macan started
Long Term
  • 13B-REW swap with an EFR 9174

F-150
Short Term
  • Slam that bitch! (4"/6") Static drop
  • Usual km based maintenance replacing worn out parts with upgraded versions
Long Term
  • Turbo back true dual sidepipes in the factory running board location
  • Line-lock
  • Bigger IC
  • Meth
  • Tune

So what's the deal with RX-8's anyway?
Mazda's last rotary has somewhat of a reputation.

The good: It's a long wheelbase NC Miata that seats 4.

The bad: In order to pass emissions, Mazda moved the exhaust ports. This added additional heat to the rotor side seals causing premature failure. The factory ignition coils also don't last past 30k. Oh, and the oil injection system is computer controlled and was tuned incredibly conservative initially. Mazda hosed up pretty good with the 13B-MSP.

Despite all of this, it made 180rwhp in a 3000lb package equipt with a Torsen LSD. The similarities between it and the GT86 are there. Especially the complaints about the chassis not having enough power from the factory.

What about this one?
It's almost stock. I've made a few posts previously over the years on some maintenance.

At 80k km, the factory ignition system was removed and replaced with GM LS2 coils.

This is what a dead ignition looks like.

At 90k km, the factory clutch pedal bracket welds snapped. This is an incredibly common problem on all RX-8's and has allowed some people to buy these cars for very little money. Cars listed with broken transmissions often just need the pedal bracket welded back up.
This is a factory replacement bracket from Mazda seam welded preventing future problems.




At 100k km, the factory shocks were long overdue for replacement. They were so badly blown that each one was compressible by hand. The car was basically riding on just the springs.

There are now Bilstein B6's at each corner. Factory springs for the moment. I am in love with this combo.

Next up was a seafoam treatment. This one is a point of contention and I'll be honest. Based on how hard it is to clean the carbon off of rotors by hand mechanically or with a 4000psi pressure washer, I am doubtful this worked.
It made some serious smoke, however.
Step 1 is unplugging the eccentric shaft position sensor. I prefer to get at it from the top by removing the air box and reaching down between the AC compressor and crank pulley. The reason for disconnecting this sensor is that it is the only way to disable fuel and spark while still allowing the car the crank over.


Step 2 is connecting some tubing to the factory lower intake manifold ports. (With the correct restrictor nozzles in place, these two ports allow for super simple water injection additions.)

You can just make out the blue tubing in the bottom left connected to the rear LIM port.

Step 3 ???

Step 4 Profit, wait, no, SMOKE!




I am way prouder of that smoke ring then I should be.

This brings me chronologically to now, with the 8 having 111k km on it.

Sitting in the garage is a Megan Racing cat delete pipe since from the factory catalytic converters like to clog up due to the oil injection. Once that clogs, the additional backpressure and heat accelerate side seal failure significantly.
Additionally, without the cat, it will shoot fire like all proper rotaries. The exhaust system bolts are soaking in seafoam deep creep right now awaiting their removal tomorrow morning. The factory muffler with the cats removed sounds quite good and isn't too loud. There's a hint of rasp and bark to it but nothing crazy.

The car is also starting to exhibit significant axle hop on even soft launches, which indicates bushings are getting worn out. Replacement poly differential mount bushings have been purchased and are awaiting installation.
Complete poly bushing replacements for both the front and rear suspension will be ordered from energy suspension next month.

I am also hunting for a pair of dead engine mounts for an arts and crafts project.The factory engine mounts are oil filled and the rubber holding that oil in likes to crack when exposed to the elements and time. If you drain the oil and replace it with 90 shore urethane, you can make some decent replacement mounts for cheap. I have the 2 part urethane already. If I don't find a set of engine mounts soon, I'll remove the ones from the car one at a time over the course of a weekend.

Additionally, I should order new brake lines soon. The factory rubber lines are original. (The pads are Hawk HPS which were replaced at 65k.)

Yesterday I won an auction on Yahoo Japan for a factory miniDisc head unit. Hopefully, it will arrive before the TM2TW rally so that I can bring my Eurobeat collection with me.
I also have a Tactrix Openport 2 OBD2 interface cable on the way to work in conjunction with my copy of MazdaEdit.
This software allows me to edit all the factory ECU parameters and disable CEL codes. Like the one that will be generated by not having a cat. I can also bump up the oil injection rate and play around with the deceleration fuel trim tables to try and blow up the factory muffler.

You mentioned something about slamming something?
In my twisted mind, I think of pickup trucks as high COG muscle cars. They're body on frame, have big engines and can be RWD.
Since I am surrounded by Brodozers, I must lower it. It also helps my dog get into the truck easier and makes the bed more useable since I no longer will have to lift things up into it.

Currently, there is a 7" wheel gap between the front tires to fender lip and a 9" wheel gap between the rear.
The footprint is already 3" wider than stock in the summer thanks to a set of Method Roost wheels:


That qualifies as cheeky, right?

I plan on taking a two-step approach to lowering the truck. I already have lowering spindles and an axle flip kit. Problem is that in support of the axle flip, I need a single piece driveshaft. This is due to the overall length required is now shorter and the input shaft bottoms out in the transmission and that the factory carrier bearing and it's related angles get totally messed up. Additionally, A C-Notch is required to regain useable suspension travel.

So in the meantime, I have a Ford Performance lowering kit ordered (which is really just a rebranded GroundForce kit). This includes lowering shackles for the rear, which in conjunction with removing the factory spring/axle spacer block, nets a 2-2.5" drop and 1.75" lowering springs for the front, gets me started. I'll be combining that with Bilstein B8's next month.

I could have done everything all at once but then I would have had zero funds to spend on the 8.

So stay tuned for continued updates!

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Waffle House
Oct 26, 2004

I have terrible opinions about Destiny the Video Game

McTinkerson posted:

At 90k km, the factory clutch pedal bracket welds snapped. This is an incredibly common problem on all RX-8's and has allowed some people to buy these cars for very little money. Cars listed with broken transmissions often just need the pedal bracket welded back up.
This is a factory replacement bracket from Mazda seam welded preventing future problems.



lol this happens on Mazdaspeed 6s as well

Wanna see that F150 lowered though.

mekilljoydammit
Jan 28, 2016

Me have motors that scream to 10,000rpm. Me have more cars than Pick and Pull

Interested to see where this goes, at least partially because I've been mulling over MazdaEdit for my own RX-8 and am interested in how OK/bad it is to use.

NumbersMatching320
Oct 24, 2010

RESALE VALUE, MEIN HERR




McTinkerson posted:

So I'll be putting that thousand into making the RX-8 channel the spirit of Sweet Chili Heat.

McTinkerson posted:

isn't too loud

https://www.summitracing.com/int/pa...10300/overview/
Glad to see you finally doing a rotary thread tho. Lovin' the Super Advans.

Seat Safety Switch
May 27, 2008

MY RELIGION IS THE SMALL BLOCK V8 AND COMMANDMENTS ONE THROUGH TEN ARE NEVER LIFT.



Pillbug

That F150 is already a weapon. I love it.

Liquid Communism
Mar 9, 2004


At least we didn't cook the dog.



Fun Shoe

I despise lowered trucks, but you do you. That RX8 is awesome, though!

Seminal Flu
May 15, 2004

Beware, BEWARE!

!We're EVERYWHERE!
Parachute, or paranoid?
We'll not rest 'til this thread's
DESTROYED!


This is a good thread.

Since mine went to the archives, I kinda want to start a new one to pair with this one with a title of "Hemorrhoids and turbo fours" to match my current set of cars.

Larrymer
Jan 10, 2007



Seminal Flu posted:

Hemorrhoids and turbo fours

What are you waiting for?

QuarkMartial
Sep 25, 2004
[This Space for Rent]

I want to see where this goes; I joked with my students earlier this week that I should get airbags and slam my 06 F150.

McTinkerson
Jul 5, 2007

Dreaming of Shock Diamonds

I would like to dedicate this post to Seafoam Deep Creep. You have my undying love.

The following was completed in Fifteen minutes. Not a single bolt or hanger was difficult. This car has lived in Alberta it's entire life and has been driven through every winter as a daily up until 2017. It was still driven through the winter of 2017/18, just not every day.


Header to Cat flange, soaked in seafoam. (17mm nuts and bolts for reference)



Ditto for the rear O2 sensor and mid-pipe flange. (22mm head on the O2 sensor, open-ended wrench was all it took. No extensions to break torque required.)
Motorcycle cable lube works incredibly well on the rubber hangers.


This thing is heavy. Best guess, 20kg or so. Maybe a little more. Zero broken bolts or nuts.No visibly cracks or holes anywhere.


Front O2 and factory header looks fine, definitely got toasty.
I obviously fired the car up on open header. This summoned over both immediate neighbors, terrified all pets and children and unfortunately required shutting it off sooner rather than later. Or else there would be video. It was glorious for the 30 seconds it was running, however.


Old and busted vs new hotness.



New pipe is in and everything lined up perfectly, leak free.

Now to go rip this thing around while shooting flames on every shift.

Further developments: MazdaSpeed CAI acquired. Used but that's A-OK.

destructo
Apr 29, 2006


It's not terribly surprising that Mazda can't make rotaries anymore when you look at the size of "modern" RX cats. The main cat on the FD is ~35lbs and the precat was ~25.

the spyder
Feb 18, 2011


Have you read about the Speesource RX-8's - the factory intake is tuned so well that they left it stock on their track cars. It's made me question CAI's on 8's ever since.

the spyder
Feb 18, 2011


destructo posted:

It's not terribly surprising that Mazda can't make rotaries anymore when you look at the size of "modern" RX cats. The main cat on the FD is ~35lbs and the precat was ~25.

And worth approx $500 in scrap combined when platinum was high. I believe I sold ~3-4 cats and 2 pre cats for $1200.

TWSS
Jun 19, 2008



Those welds on the bracket are pretty slick. Did you do those?

McTinkerson
Jul 5, 2007

Dreaming of Shock Diamonds

the spyder posted:

Have you read about the Speesource RX-8's - the factory intake is tuned so well that they left it stock on their track cars. It's made me question CAI's on 8's ever since.

I am 100% convinced that the AEM/MazdaSpeed CAI will lose me power over the stock intake. The reason for it is engine bay thermal management. With the removal of the stock airbox and the eventual relocation of the battery to the factory washer fluid reservoir location, I hope to be able to reduce engine bay temps by allowing the radiator fans to work more efficiently in conjunction with a vented hood. Currently, the battery and air cleaner box direct all the air down and out through the bottom along either side of the engine.

On the subject of the Speedsource RX-8's, I will post my Sevenstock 13 pictures once I get some more time. Pretty sure I have pictures of the whole fleet.

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Powershift
Nov 23, 2009

Ran when parked




I have similar fitment on my f-250, although i run them through the winter and have a rock chukin tread, but it has basically sandblasted the inside lip of my fenders. Trucks with factory 20s get those barely noticeable plastic fender flares. If it was me, i'd just get a roll of that 3m clear film, and run it round the painted portion of the inner fender.

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