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Swanpuppy's low boost NB build

Old 12-07-2018, 02:56 PM
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Default Swanpuppy's low boost NB build

Hello all. I have been lurking on here for years, I mainly have been absorbing information. I have had Miatas for approximately 7 years, a few NAs, a few NBs, and roughly 3 years ago I bought my current NB2. It started out 100% stock with roughly 80,000 miles on it. Since then I have built it completely n/a to be my HPDE car that can be daily driven if required. Up until recently it had:

- DIY bilsteins with 450/300 springs, ISC rear hats,
- Large racing beat front bar with reinforcement blocks
- stainless lines, rebuilt calipers and stop tech sport pads
- Blackbird Fabworx roll bar
- Advanti Storm wheels with Federal 595 RS-RR tires (love these on the track)
- eBay intake
- DIY catch can
- eBay axle back exhaust
- I found a beat to crap hardtop with multiple colors on it for $400 dollars and had my brother work some magic on it
- I fixed a few things like AC, windows, switches, belts, end links,

When I bought it.


After wheels and coilovers.





For track days I install a beat up corbeau seat with 6 point harness, Zamp neck brace, and hit the track. The car has been rock solid reliable, so I figured it was time to ruin that. Pics below are the past few years lapping.

Hardtop carnage.









I added a Blackbird Fabworx wing last year, that coupled with the hardtop dropped my times by 4-5 seconds a lap alone. At this point the car looked great, worked great, I had no issues. I ended up moving and lost my two 2 car garages plus wood shop, and had to shove myself into a standard 2 car garage. Luckily, there was a tandem shop in this house, so I tore a wall out to make room for my car.








There was just enough room in the shop to get a little work done. I also ordered new tires this winter. I also noticed my AC stopped working again, so I took out the AC and power steering as this was becoming more and more a track only vehicle.





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Old 12-07-2018, 03:11 PM
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I have always looked for, bought, and flipped cars. Crown Victories and miatas have always been good money makers. This winter I found a silver NB a few hours away with no description and only a few crummy photos.

Original ad photos:






Hmm, well it peaked my interest. Turns out it has a lot of modifications done to it, but most importantly, a turbo. Goal is to boost my car for effectively $0. So I bought it and brought it home. Car has roll bar, coilovers, full body bracing, roadster angled shifter, COPs, wilwoods on 4 corners, stainless lines, wheels/tires, etc.



Turbo kit is comprised of: Begi mani and DP, custom 2.5" exhaust to magna flow muffler, braided lines, china charger, FMIC, mainly hard piped, and powered by a 5X timing wheel and PooPoo box. Wideband and boost gauge. In an effort to keep costs as minimal as possible, the goal is to simply swap the entire system to my car, learn to drive and track on a 5psi system, and sell the donor car. I am aware megasquirt is the holy grail, and I will get to that point, but this is an exercise in low boost for no money, and I want to see when its all said and done just how cheap I can do this once I sell the donor.

Up to this point, I have pulled the radiators, intercooler, exhausts, ecu, timing wheel, and have begun swapping parts. I have new motor mounts ($108), Bosch BOV($25), piping($9), drill/tap ($40), oil bung, ready to go on the car. Over the course of winter I hope to complete the install. I should also note, this winter I have already installed new 550/350 springs, ELBJs, and ordered new tires for next year. I will try to keep a tally of all the little things I buy and try to break even with the sale of the donor and misc parts.





List of things completed:

-EGR tube swapped, radiator done, fans rewired, intercooler mounted, poopoo box wired, oil feed piping ran.
- donor car has rad installed, fans installed, stock ECU rewired, vacuum all plumbed,

Last edited by Swanpuppy; 12-07-2018 at 04:14 PM. Reason: adding info.
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Old 12-10-2018, 08:58 AM
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I started to work on a few other things this weekend. I started to wire up my gauges. I think I am going to go for a dual dash mount, and run the wires down through the dash hvac duct to the footwell.



Then I started to work on the transmission. In reality dropping the transmission was not as bad as I thought it was going to be. The Car Passion channel on youtube has a nice video detailing the main steps.


Ahhhh FM goodness. This was installed on the donor car roughly 3k miles ago, so this will be directly swapped over.


Holy F batman, the rear main seal on my car (donor was fresh, so I won't touch it) was horrible to get out. I tried picks and screws with pliers, I ended up punching myself in the face when the screw pulled out. I finally did get it out, however the new seal tore itself apart when I tried to put it back in. If you look close the outer and inner edges are tearing apart. Does anyone have recommendations on getting this in? I now need to order a new seal to try again.

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Old 12-10-2018, 08:58 PM
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An FM rear main seal install tool makes it ezpz. It can be done without the tool, I can do it, 18psi could too but he wouldn't waste his time.
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Old 12-10-2018, 09:39 PM
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Nice car. I'm digging those headlights.
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Old 12-11-2018, 10:14 AM
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Thanks, the headlights I believe are similar to 'protuninglab' lights for Miatas. They have halos etc. They give it a nice look at night but more importantly the blacked out lights looks fantastic with the color scheme of the car.

My main issue I ran into yesterday was the rear main seal shredded itself. I ordered a new seal, and read about an old trick from a few years ago where someone mentioned to soak it in oil. I don't know if that was it, but this one slipped right in, and a few light taps it was all set. I wrapped up last night by getting the clutch installed and everything torqued.



Hopefully this evening I will get the throw out bearing in, clean out the inside of my trans, and start looking to reinstall both transmissions. I have a rear and front transmission seal in bags, is it worth replacing them as a 'while youre in there' thing? My car isn't super high mileage, and I have a feeling ill punch myself in the face again like I did with the rear main seal.
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Old Yesterday, 11:13 AM
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Throw out bearing is installed, transmission got a wipe down. Pic shows starting progress to clean some of the gunk out. At this point I have my transmission installed, just finishing a few bolts. This weekend the donor car will get its transmission fully bolted back in. Next step is motor mounts. I also started drilling and creating my bungs for my BOV. Plan is to use this new hard connection on the TB inlet, then run a radiator hose or similar to the silicone intake elbow to the turbo.

So far I have spent about $105-$110 on the turbo build (obviously not including the car or my up grades like motor mounts/ELBJs). Costs include grease, JB weld, BOV, bov fitting, gauge pod, drill and tap, assorted clamps, rear main seal.

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