Miata Turbo Forum - Boost cars, acquire cats.

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- - street/track NC build (https://www.miataturbo.net/build-threads-57/street-track-nc-build-94128/)

Quote:

Originally Posted by __clu (Post 1434861)

Gonna be in Austin while you wait?

I stayed in Austin for just one day. Then I took a flight home. It would be cool to take a vacation for several weeks and drive the car home. Haha - not really feasible right now. The car will be shipped back to me when its done.

Well, that did not go as expected. Dynotronics is swamped with work and my car's build has more than doubled the original allotted time frame. Today my stupid city decided that a morning frost was enough to dump salt all over the roads.

So thats that. I thought getting the car to Joe in August was early enough to ensure some quality driving time this fall, but now its over. As soon as the car gets back to me it goes into storage for four more months.

I'm bummed out. I just want to hibernate.

That sucks. Joe is always swamped because of him being a one-man show. I am surprised he gets anything done on a timely basis.

Soooo I finally get to update this thread.

I'll post more next week, but the car is finished. Its scheduled to be picked up from Dynotronics tomorrow and delivered to me by Monday the 4th.
I did not think this was going to take 9+ months on the outset, but so it goes. Next time I have more incentive to do it on my own.. Joe has been really good to work with, despite the delays and setbacks, he is honest man and does a clean build and install.

for now, a easy-does-it break in tune at low boost with 91 octane.

https://forum.miata.net/vb/picture.p...ictureid=23031

Just putting miles on right now. Some glamour shots since cleaning it up.

https://s6.postimg.cc/nm7yzymkx/DSC02403.jpg

https://s6.postimg.cc/luf052qdd/DSC02400.jpg

https://s6.postimg.cc/sxmvkpiy9/DSC02401.jpg

https://s6.postimg.cc/l4w7ssi4x/DSC02402.jpg

https://s6.postimg.cc/inkglf3ch/DSC02398.jpg

Gonna try to get some data logs soon. From what I gather from the dash unit, its hitting its 11ish psi or 185 kpa at partial throttle if I let it get to 4500 rpm or so. The 64 degree intake air this evening was great for power and spool! Hell yeah.

Updated parts list:

Engine/Drivetrain

Dynotronics built 2.5
EcuTek Race Rom
Forged rods/Forged pistons/9.2:1 comp
Integral 1.5 camshaft/FI grind
Fabricated intake manifold
ARP hardware
Fab9 turbo kit/Borg Warner EFR 6758/Custom 3" mid/GWR Roadster sport dual
GWR triple-pass radiator
Treadstone intercooler
DW 800cc injectors/DW 300c fuel pump
Greddy Profec boost controller
Clutchmasters FX350 clutch
13 lb steel flywheel

Chassis

Soft top delete
Blackbird Fabworx GT3
Removable hard top
Ohlins DFV
Racing Beat sway bars & end links
Enkei PF01SS +48
Yokohama S-Drive 235/40/17
Track Dog Racing battery relocation kit

Cosmetic

AutoExe steering wheel
Redline Goods shift & Pbrake boot
Voodoo shift knob
Euro fog light bezels
Aim Strada street version digital dash
Pioneer AVIC-5000NEX
Stubby antenna
Moroso coolant expansion tank
GWR silicone hose kit/red

I don't like NC's but I love this one.

Quote:

Originally Posted by sixshooter (Post 1485519)

I don't like NC's but I love this one.

Same here. My uncle let me drive his NC and I was very unimpressed. I bet yours is a blast though, can't wait to see some dyno numbers! :D

Uhmmm. we need videos man, this thing is unreal.

Quote:

Originally Posted by 90LowNSlo (Post 1485600)

Same here. My uncle let me drive his NC and I was very unimpressed. I bet yours is a blast though, can't wait to see some dyno numbers! :D

Basic dyno is posted. I'll get more data eventually. It made 350 whp @ 7000 and 320 ft/lbs @ 3500 on a dynapack at ~11 psi. After a few thousand miles and everything is through the break-in period I'm going to add a few more psi.

Quote:

Originally Posted by Fireindc (Post 1485813)

Uhmmm. we need videos man, this thing is unreal.

100%. I clamored for videos of everyone elses stuff when I was waiting for dynotronics to complete the engine, so I can't be a cop out. I'm not set up for good video media at the moment, but I'm working on it. I'll have something up by next week.

This is a seriously cool NC; I like the sinister, black look paired with the hard top!

I really like this car. A lot.

This is such a tempting path for me. Any issues post-install?

Quote:

Originally Posted by Shibby (Post 1537613)

This is such a tempting path for me. Any issues post-install?

Nothing out of the ordinary or insurmountable. Typical boosted car stuff. I had to chase a boost leak, a few rattles. Dynotronics build the engine and it runs on his EcuTek ROM files. The only downside to this so far has been the response time for tuning requests. You need to have saintly patience with Joe. He works very slow.

If you are capable of tuning yourself, the hardware is good to go. The engine runs great, and very quiet. Full 3" exhaust, but has a hi-flo cat. I'll try to get some videos up soon.

Next up is the install of a return-type fuel system and ethanol content analyzer. Gonna get the car ready for E85 and more boost.

I love everything about this car.

Also noticed your WI plates. Whereabouts are you from? Would love to check this car out in person sometime if we cross paths at an event. I'm in Milwaukee

Quote:

Originally Posted by Padlock (Post 1537652)

I love everything about this car.

Also noticed your WI plates. Whereabouts are you from? Would love to check this car out in person sometime if we cross paths at an event. I'm in Milwaukee

I'm in Oshkosh. I enjoy meeting Miata people so I'll try to get out to some events this year with FVSCC or CWSCC.

Your NB build thread is insanely good. I'm working through it right now, but nice freaking job on that thing, and the other projects in there too.

Thread resurrection.

With a cautionary tale.

Not long after my last post here I was on a data logging session with the car when I melted the engine. I had the Aim dash unplugged so that I could have the laptop plugged into the CANBUS. Its an either-or situation, and since the Aim dash is mounted in front on my stock gauge binnacle that means I get no instrumentation during data logging. Its all on my laptop screen. Driving alone and everything had been going really well so I hadn't noticed the engine temps. Turns out that when the car was warming up in the garage it popped a plug in a deleted coolant circuit and dumped all the coolant into a big crack ion the floor. So I didn't notice it and drove off. The thing was running so strong that it didn't complain at all until it simply made too little compression to idle. It happened pretty fast. I was not smelling the roses.

Anyway. I was gut punched. Totally my fault. $7000 race engine completely melted down. Never got to enjoy it.

Well, I didn't give up. I needed time though. I saved up for a year to buy another engine with no compromises. Dynotronics took another year to build and ship me the engine. And this time I was going to do the install to (A) learn the process myself and (B) perform it to my satisfaction.

That process is nearing the end after an 8-month swap and improvement session. This car went from being my main hobby to something I did every other weekend. Life gets busy and all that. I felt like updating this thread to kind of pick up where I left off. I'm currently pretty close to having it back on the road.

December 2021, new engine arrives.

https://cimg5.ibsrv.net/gimg/www.mia...ee85b0796f.jpg

Build specs:

PISTON SET, 9.5:1 ESSLINGER
ROD SET ESSLINGER 6.136" H beam
BALANCER BOLT ARP
FLYWHEEL BOLT ARP
CAM BOLT ARP
HEAD STUD SET ARP (CUSTOM AGE 625 OPTION)
MAIN STUD SET ARP
ROD BEARINGS ACL
MAIN BEARING SET KING
THRUST SET OEM
HEAD SET OEM
REAR SEAL OEM
GASKET HEAD COMETIC
CAMS STAGE 1 ESSLINGER
CHAIN TIMING OEM
TENSIONER OEM
CHAIN RAIL OEM
CHAIN GUIDE OEM

CONVERSION LIST
2.5 TIMING COVER TO MX5
2.0 OIL SUMP AND PICKUP
2.0 BALANCER MODIFIED
CRB REMOVAL MODIFICATION
2.5 OIL TO 2.0 OIL MODIFICATION
MACHINE SERVICE LIST
BORE/HONE
ALIGN HONE
DECK BLOCK
TANK BLOCK (ULTRASONIC CLEAN)
CRACK CHECK CRANK, BLOCK AND HEAD
BALANCE ROTATING ASSEMBLY
5 ANGLE VALVE JOB WITH PLUNGE CUT
SET SEAT PRESSURES TO DYNOTRONICS SPECS
ADJUST CAM TO BUCKET CLEARANCES FOR CAMS
KEY CRANK AND SPROCKET

https://cimg6.ibsrv.net/gimg/www.mia...0c553a9462.jpg

Getting the layout of the shop.

New chassis parts to install during this new build phase:

I.L. Motorsports chassis underbrace 3-piece kit.
LRB aluminum air tray for radiator and side support
Racebred Components quick-detach front splitter

https://cimg7.ibsrv.net/gimg/www.mia...b7a579c4a7.jpg

January 2022,

Borrowed the engine hoist and floor stand from, a buddy. Disassembly begins.

https://cimg2.ibsrv.net/gimg/www.mia...4e744eaa17.jpg

Decent progress after day one. Lots of labeling wires, hoses and plugging disconnected fluid lines.

https://cimg4.ibsrv.net/gimg/www.mia...ee9c2ff443.jpg

The I receive the next major component upgrade from Walter Motorsports. Got lucky on the timing and ordered a custom 3.63 ring and pinion set with Tomei LSD prebuilt in a core.

https://cimg6.ibsrv.net/gimg/www.mia...bd2b5549f5.jpg

Really clever packaging/shipping solution! Cheapo rolling cooler.

https://cimg7.ibsrv.net/gimg/www.mia...b596a8496a.jpg

https://cimg8.ibsrv.net/gimg/www.mia...1cbc20170c.jpg

At this point I'm looking at all the systems on this car for potential improvement. Realizing I never did anything with the brakes, all the way down to factory brake fluid. So I went to GoodWin Racing and got a brake package from them. Went for a more budget setup here to save a little coin. No monoblock Wilwood 4-piston calipers, but some nice fresh rotors and pads with steel lines.

https://cimg7.ibsrv.net/gimg/www.mia...2ae3e3d11f.jpg

https://cimg9.ibsrv.net/gimg/www.mia...98ca217f0f.jpg

Some more pictures of parts removal.

Prototype 1Goal fabricated intake manifold. A pre-production unit.

https://cimg1.ibsrv.net/gimg/www.mia...bde99e330f.jpg

Cooling pack with power steering reservoir

https://cimg2.ibsrv.net/gimg/www.mia...e46850aa62.jpg

Front end getting lighter

https://cimg3.ibsrv.net/gimg/www.mia...9f92f5af30.jpg

This was end of day two progress

https://cimg4.ibsrv.net/gimg/www.mia...5ff977ef53.jpg

At this point it became apparent where my coolant leak was from. Here is the coolant bypass hose with the deleted circuit that previously went to the throttle body. Just a cheap Chinese rubber nipple with a small hose clamp. crazy huge disappointment to find this was the failure point to my expensive race engine.. this 2-cent part. And it is under the intake manifold and inaccessible/undetectable with everything together. I will change this block-off and never have anyone else make a decision in this build process again.

https://cimg6.ibsrv.net/gimg/www.mia...f1cddf98c2.jpg

Almost March, 2022.

Time for the front engine cradle and suspension to drop out.

https://cimg4.ibsrv.net/gimg/www.mia...720ad6982b.jpg

Something neat about the QuickJack 5000 - If you use both rubber blocks at each corner there is just enough room to roll the whole shebang out from under the car on a typical floor jack without having to raise the body any further with a sketchy lift.

https://cimg7.ibsrv.net/gimg/www.mia...4ba2708888.jpg

https://cimg4.ibsrv.net/gimg/www.mia...d4958bb487.jpg

https://cimg7.ibsrv.net/gimg/www.mia...c97cbe2a4a.jpg

Engine is out! Now I get busy with some other projects while I gather supplies to actually perform the parts swap.

https://cimg9.ibsrv.net/gimg/www.mia...0aeccad3d2.jpg