omgpham…
11Jan/170

3D Modelling & Printing.

 

Ahoy!

Lately I've been spending more time learning how to model parts in 3D, still new so bare with me. It's not a new concept to me, but I am using Fusion 360 mainly now and sometimes a bit of SolidWorks.

I've done some prints in the past, a good example would be the bulk head connector plate I drew up and printed. Had it installed in the car while I waited for the final piece to be laser cut from steel.

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And now I'm starting to move onto slightly more detailed designs. Starting of with "remixing" a design from Thingiverse.

4AGE Black Top Velocity Stack - http://www.thingiverse.com/thing:25207

And my "remixed" version, which is basically modified for Silver Top engines instead of Black Top and increasing overall length to 115mm.

4AGE Silver Top Velocity Stack - http://www.thingiverse.com/thing:2016083

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I than scrapped that design altogether and did one from scratch, increased the radius lip profile and removed the side bracing. The print below was done in ABS and I'll be testing it for clearance and heat resistance. If all goes well, I'll most likely print my final design in ABS. If not, other materials like Nylon and Poly-carbonate are alternative options for heat resistance.

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And this is another design I quickly modelled. Main differences being the bottom flange, length adjusted to 105mm and the dimpled internal surface. NO idea how that'll work for airflow, good or bad, but it's fun drawing these and 3D printing them! The idea is from dimpled surfaces on golf balls, and I've seen shops machine dimples onto the back of inlet valves and cylinder head ports.

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And this is how the print came out.... About halfway up the velocity stack, the wall was a tiny bit too thin and the dimples were too deep! Not something I was expecting, but I'll learn from this one and make revisions. This print was also done at 300 micron layer height, I think it needs to be 100-200 micro next time.

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And finally, this is an airbox/plenum that will mount to my current Pipercross filter plate. Still needs some work here and there, but I'm pretty set on the general shape of it and the inlet is 4.5" diameter. The final product could be moulded from the 3D print and made with carbon fibre, or possible printed entirely out of fibre infused nylon for strength and heat resistance.

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More to come!

11Jan/170

Toda High Compression Pistons!

 

Welllll than...... A couple new things in this update, and possibly a second post regarding some stuff I've been 3D modelling for the build.

First up, managed to install this 5V oil pressure sender and input it into the Megasquirt for full datalogging and dash display through Shadow Dash. The tablet mounted using two magnetic mounts clipped to the eye-ball vents. Works very well and has a very strong hold.

It was surprisingly easy to get working, the sender needs +5v, ground and signal return to the ECU. I happened to use the AD6 input on my Megasquirt, and TunerStudio has a built in wizard to configure your sender.

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Developed a slight oil leak into cylinder no. 4 so took valve cover off to replace the gasket. Remember to go genuine valve cover gasket! I've had nothing but trouble with non-genuine valve cover gaskets.

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Finally bought some new tyres and fresh alignment done! Hankook RS3 225/45 R15.

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Received and installed my IL Motorsport bonnet lifts, not sure if I like them yet.

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Next up, I had some spare parts accumulating and was able to put together this LED bar kit. It's operated via RF remote control that looks like a bomb detonator, the LED light bar and associated electronics (now enclosed in water-proof case) are mounted just behind the front bar.

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Garage Star Coil-on-Plug adapter acquired!

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Toda forged pistons!!! They are 11.0:1 compression ratio and +3mm overbore, made from a special alloy with very littler thermal expansion which allows it to run factory Mazda piston-to-bore clearances. Toda also designed the skirt to allow usage of factory oil squirters. I also ordered the matching overbore head gasket from Toda.

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Some close ups of the pistons.

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23Sep/151

Back Home!

 

Happy day! Car has been towed back home and first thing we did was remove all the front panels 🙂 Storing them in a spare bedroom for now, don't want to scratch anything during assembly.

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Colour is Audi's Aviator Grey.

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The entire engine bay was covered in blankets during the engine install.

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Hnnnnggggggggggg!!!

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Colour looks amazing in sunlight, the Audi paint code has a bit of pearl through it but can only be seen in direct sunlight.

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The freshly powder coated radiator and sway-bar brackets fitted up with new bolts.

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A quick mock up panel for the engine harness Deutsch bulkhead connectors.

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I had the front lip painted gloss black, will be interesting to see how well it holds up from all the abuse it cops 😛

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30Jul/150

Off To Body & Paint!

 

Today was a good day 🙂 my Mazda was towed off to J&D Quality Smash Repairs.

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Everything all set aside and ready to picked up.

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Looks tough without the rear bar!

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Tow drive arrived around 8.30AM and had her loaded up for a 30mins drive.

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Sort of weird seeing your car get towed away, good weird though.

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Once arrived at the shop, we continued removing a few more bits and pieces from the car. Things like rubber seals and everything in the door jams.

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Quickly cleaned up one side of the engine bay using wax & grease remover with 3M Scotch Brite pads. Cleaned up really well and gets the surface some what ready for primer and paint.

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Decided on the engine bay colour, this is Audi's Aviator Grey. Clear coats will be applied on top of this too.

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More updates next week!

7Jul/151

Jass Performance Interior Light Install

 

The MX-5's interior is known for it's minimalist nature, and with that comes the poorly lit interior. Vlad from Jass Performance has come up with a neat solution and below is my installation, with a slight difference.

Jass Performance Interior Light.

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The kit comes supplied with instructions and is plug and play.

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Firstly, you'll need to remove the visor and roof latch. This'll allow you to mount the light and tuck the wires away.

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The passenger and driver side lights mounted up and wires tucked away. It's a little bit tricky to do, try have someone else around to help out.

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The black wire has a small ring terminal which screws into your existing courtesy light, this just allows it to turn on with the doors and still give you the ability to switch them on/off whenever you please. My install is a little different to the standard instructions, I've added a plug and soldered the red wire directly to the factory light. So please note that soldering is NOT required.

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Lights working.

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And a quick photo to show how much coverage it has. Photo was taken without flash and in complete darkness.

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Second photo below was taken using a higher ISO setting on the camera, again no flash and in complete darkness.

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11Jun/150

Head Unit Relocation 2nd Update.

 

Received some feedback and discussion on my head-unit relocation last week, and as I often find, I decided to change it up to the better option.

Below are photos of where the head-unit was mounted, I made a custom MDF piece for that spot too.

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But it was obvious that the better position would be in the other corner of the boot, and mounted from above. Overall it looks a lot cleaner and more out of the way.

Started off by half removing some of the rear carpet, I than removed the bottom four bolts of the rear parcel shelf cover. Made it a lot easier to run the harness.

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Harness fed through and the head-unit case mounted up!

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Everything mounted and connected, works just as well as before.

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17Jan/140

Valve Clearance

 

Long time no post!

This has been a long over-due service item, valve clearances. Because it's a brand new head build, the clearances have to be checked roughly at the 5000km mark.

This forum thread below was very helpful.

http://www.miataforumz.com/how-40/how-check-valve-clearance-re-shimming-nb-head-331/

But I was too lazy to pull everything apart to remove the camshafts, so I ordered the Mazda special service tool for this 😀 It basically let's you remove the shims with camshafts still in.

Mazda part number is 49T0-12-0A0A.

Using my feeler gauge to measure all the clearances first, best to record everything as well. A couple of simple calculations are done to find what shims are required to get the clearances within spec.

Tool bolted in and setup.

Bucket pushed down, shim out so it could be checked and measured. This one is 4.00mm.


22Jul/133

ITB Build – Part 14

Dropped my engine off last week at the Auto Xperts, they did an excellent job and degreed my cams to the recommend specs. Final adjustments will be made on the dyno.

Picked her up this morning and have been on it since than.


After the crank bolt was correctly torqued, I started on assembling the timing cover and ITBs.


Some close-ups of stuff.


Lightened flywheel and clutch going in.

Engine going back in 😀


YES!!!!!!!!!!!!!!!!!!!!

1Jun/130

Interior Update

 

Still waiting to get my head back from the engine builder, so no real updates.

One of the perks from organising a group buy of 40 Sparco Sprint V seats... I kept a seat for myself so now my passengers can sit in comfort 😀 also ordered a OMP 330mm deep dish steering wheel that shipped with the seats.

Some seat bolster protectors from MX-5 Mania are on their way too.

Centre Console Delete Kit now available:
http://omgpham.com/store/interior/centre-console-delete-kit.html

25Apr/137

Centre Console Update & TSI

Small update!

I finished up my design to relocate the power window switches after deleting the centre console. The switches are automotive grade and will include wiring harness using crimped connections. A revised template for the carpet will also be included and will cover up the tunnel and fuel/boot release levers. The panel is CNC laser cut from 1.6mm thick stainless-steel sheet and all supplied hardware will be stainless-steel too.

Testing so far has been very good, functions like factory (no auto feature), and I find it easier to reach than the factory location for the switches.

Centre Console Delete Kit now available:
http://omgpham.com/store/centre-console-delete-kit

Below are some photos of the first prototype.


I now stock TSI kits, Turn Signal Intake. Replaces the factory light assembly, and provides a good source of cold air into the engine bay. The vents have both LED parker and indicator lights.

http://omgpham.com/store/stealth-tsi

Not too bad hey!