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Goodwin Racing NC going to Superlap Battle USA COTA 2020
Official announcement :)
Project "Budget NC" Phase TWO! This past year we bought a junkyard NC and have been building a road map to show how you can build a quick and fun NC for a very reasonable amount that will embarrass exotic cars in the twisty bits and at autocross. We've also taken this car to the track and turned respectable times but on the big track it's clear that it's an "all the grip" car that would be happy to use more power if we had it. For stage 2 we want to step the car's track capability up a couple notches and see if we can embarrass some exotics on the race track as well. A baseline at a local track with the car as it is now is due first so we'll get that done just after the holidays, and then we'll take you guys along as we add some power, some aero, and some additional track-focused mods to take this car to that next level. And hmmm we should probably have a big event to take it to, don't you think? Superlap Battle USA at Circuit of the Americas is right around the corner, Feb 15-16. Our HyperMiata isn't going to be able to make it this year as we have several more big changes to get done and tested and not enough time to get that all done... so let's pass the torch to the NC! This car is already set up to run a 255/40/17 on our 17x10s - which the street class spec tire, the Yokohama A052 comes in, and with a full interior it seems a great candidate for a street class contender. When it's all done we can take the car back to our local track for an apples to apples comparison to see where we are after all the changes. This is going to be fun! https://www.mazdatalkforum.com/downl...hp?id=6852&t=1 Curent build list AKA "phase 1": 2006 NC we got off craigslist for $5k Junkyard 2.5L motor Junkyard factory LSD Junkyard 5 speed ACT Stage 1 clutch RoadsterSport header, midpipe and muffler Goodwin Racing Front Budget BBK Porterfield R4 Pads Konig Hypergram 17x10 MeisterR Club Race coilovers RoadsterSport sway bars Blackbird Fabworx black edition rear spoiler CarbonMiata front lip RoadsterSport lightweight battery kit |
What ECU?
Is that the CameronSport rollbar or some other? |
Any reason for the 5 spd over a 6 spd? Price? Availability?
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That's how the car sits now. Lots of changes coming.
Originally Posted by sixshooter
(Post 1557610)
What ECU?
Is that the CameronSport rollbar or some other? The roll bar is an old AWR unit that we happened to have lying around. With the speeds at COTA we naturally want a hardtop so DG Motorsports is making one for us now and because that current bar's rear legs go to the hardtop's rear mounting points on the body, it won't fit under a hardtop so we'll need to change roll bars. Plans for this coming month:
Originally Posted by z31maniac
(Post 1557638)
Any reason for the 5 spd over a 6 spd? Price? Availability?
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Ryan, FYI you may want to update your NC roll bar offerings to reflect this: Hard dog makes an NC "hard core" bar that is ~1/2 the cost of the BBFW. You may want to have them make one for this car as it fits the budget motif (as I just did) and add it to your site!
They have had the jig for at least 4 years... |
Originally Posted by vteckiller2000
(Post 1557697)
Ryan, FYI you may want to update your NC roll bar offerings to reflect this: Hard dog makes an NC "hard core" bar that is ~1/2 the cost of the BBFW. You may want to have them make one for this car as it fits the budget motif (as I just did) and add it to your site!
They have had the jig for at least 4 years... |
Vteckiller2000 is Cameronsport I was referring to. His Hard Dog bar is muy bueno and priced similarly to other normal Miata roll bars. I'm not sure if there is a non-disclosure agreement.
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Thanks guys. As part of a safety update to make the car fit for TA competition we have a Blackbird Fabworx NC RZ bar being built right now in BFW signature blue, as well as a Sparco going in with PCI seat mounts, a a BFW fire extinguisher bracket and a 6 point harness and Halotron extinguisher donated by Hyper.
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Originally Posted by ThePass
(Post 1557745)
Thanks guys. As part of a safety update to make the car fit for TA competition we have a Blackbird Fabworx NC RZ bar being built right now in BFW signature blue, as well as a Sparco going in with PCI seat mounts, a a BFW fire extinguisher bracket and a 6 point harness and Halotron extinguisher donated by Hyper.
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Originally Posted by z31maniac
(Post 1557752)
Does the Hard Dog bar pass the required safety regs?
https://cimg0.ibsrv.net/gimg/www.mia...472020105.jpeg |
Don't know. We're putting a BFW bar in it. In BFW's sexy signature blue. It's going to be great.
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Sparco Evo II US that we had sitting around from one of our other projects is a perfect fit for this car, on PCI seat mount with a Sparco 6 point harness donated by Hyper:
https://photos.smugmug.com/GWR-Budge...IMG_1943-L.jpg |
Had some folks asking about heights and weights of the seat vs stock:
The factory seat in our 2006 is a featherweight as factory seats go at 29.50 lbs. That's base package cloth seat. https://www.mazdatalkforum.com/downl...hp?id=6856&t=1 Sparco Evo II US (which is not the smallest of aftermarket seats) is 19.1 lbs and the PCI bracket is 10 lbs. So we end up with a net zero weight gain for a safer setup that sits us lower and holds us in place far better. If this car was a GT with leather seats, we'd be cutting weight too. https://www.mazdatalkforum.com/downl...hp?id=6857&t=1 It should be noted that Sparco's current crop of QRT seats are about 5 lbs lighter than this older model, so you could even come in lower. And a good comparison of headroom between the two. Dropped a significant amount: https://www.mazdatalkforum.com/downl...hp?id=6858&t=1 |
Talking with Stoptech and I can confirm we’re going to go with their C43 BBK so we can have complete confidence with turbo power at the end of the long straights at COTA. Will hammer out the specifics like pads etc once we are all back in the office after the holidays.
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I cannot wait to see this car in February! I have the weekend off and everything!
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Definitely sad that the HyperMiata won't make the trip but this project is awesome as well. I'd like to build one of these up as a wheel to wheel car sometime off in the future.
I'll see you there. :party: |
Originally Posted by Arca_ex
(Post 1558069)
Definitely sad that the HyperMiata won't make the trip but this project is awesome as well. I'd like to build one of these up as a wheel to wheel car sometime off in the future.
I'll see you there. :party: |
Current status in the engine bay. 2.5L engine, MotoEast Intake, RoadsterSport Max Power Header, RoadsterSport Lightweight Battery Kit and Aluminum Coolant Expansion Tank.
2.5 swaps are like the Millenium Falcon; "She may not look like much but she's got it where it counts." - Han Solo https://www.mazdatalkforum.com/downl...hp?id=6873&t=1 Lots of changes coming fast in this space in January. Speaking with Fab9 about turbo, fuel, etc. and getting the details hammered out. We should see a kit here some time next week. |
I'll be at COTA for superlap, I'll have to swing by and say "hi"
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Lots to do between now and then but when we get to that point will definitely post what garage we're in and hope anyone who can make it out to COTA comes by!
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I'll be there again, and will for sure come visit. I'll try not to interrupt a meal this time
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Fab9 turbo kit is en route to us. Liking the cast manifold. While this is Fab9's "budget" oriented kit, we opted for a GTX30R, which is certainly little less "budgety" but the GTX housing is what was available in the timeframe we needed it. Folks following along should be able to hit same power numbers we see with a GT30R, the spool will just be slightly better on ours.
https://www.mazdatalkforum.com/downl...6879&mode=view |
Sexy! That is the simplest looking turbo kit I have ever seen. I can't wait to see it in the car. Are you keeping your RS exhaust on there or replacing with something 3"?
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This is going to be fun.
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Originally Posted by Chilicharger665
(Post 1558459)
Sexy! That is the simplest looking turbo kit I have ever seen. I can't wait to see it in the car. Are you keeping your RS exhaust on there or replacing with something 3"?
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One thing we know we need to address is that the factory fuel pump fixture doubles as a surge tank of sorts, with a walled off chamber surrounding the pump to keep sloshing in the tank from affecting the fuel pickup. The trouble is, above about 300whp, in certain track situations you can actually drain that small 'bucket' faster than the small factory returnless style system can refill it, and you end up starving the pump. To fix this, we need to change to a return style setup that can refill the bucket faster.
Fab9 has parts to accomplish this, but then we realized we actually had the parts to do this laying around here, supplied a while back from Dynotronics for our supercharged NC, but never installed because we found it wouldn't clear the supercharger. Kit includes a modified fuel rail, adjustable pressure regulator, return lines to go from the engine back to the tank, and a modified tank fixture with an AN bulkhead fitting and pre-fabbed hard line inside: https://www.mazdatalkforum.com/downl...hp?id=6883&t=1 https://www.mazdatalkforum.com/downl...hp?id=6884&t=1 https://www.mazdatalkforum.com/downl...hp?id=6885&t=1 We'll get into installing this and see if we need anything else once we're in there. |
Parts and wrenches are beginning to fly through the air ;) Removing stuff for the impending install; bumper, brakes, header, fuel system, old roll bar, differential...
https://www.mazdatalkforum.com/downl...hp?id=6888&t=1 |
Man, I am loving this! I have a sweet spot for a NC considering I am over 6'3 :)
Is that budget kit available through Fab9?? I am not seeing it on their site |
New kit, they don't have it listed online yet. Ours is the very first one - test fit on their own car and then immediately removed and shipped to us so we would have it in time, before they've even finished writing instructions or developing a tune to package with the kit yet. They're projecting MSRP right around $4k, depending on which turbo you opt for, etc.
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RX8 front hubs. Easy bolt-in option for heavier duty hub that can handle extended track abuse.
https://photos.smugmug.com/GWR-Budge...IMG_2072-L.jpg |
Well this is moving along!
What aero bits will you be running? |
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Originally Posted by flier129
(Post 1558703)
Well this is moving along!
What aero bits will you be running? |
We've ran our 300whp supercharged 2007 on 18x10.5 for years on stock rear components, the only upgrade being an OSG. But as power and grip continue to rise, we hear from a few out there doing over 400hp at the track that around there several other rear bits become weak points in the system.
There's some internet lore suggesting that you can update to the larger RX8 rear hub/bearing by swapping to RX8 spindles and scavenging parts of an automatic RX8's axles. We picked up a set of spindles/hubs/axles from an '05 auto RX8, will be putting fresh bearings in these and then work through the conversion and see if it's possible. https://www.mazdatalkforum.com/downl...hp?id=6892&t=1 https://www.mazdatalkforum.com/downl...hp?id=6893&t=1 |
This thing is gonna be sick! Part of me wishes I could sell my NA and switch to the NC platform, but I'm too attached to the damn thing. I'd have to just build an NC as well.
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Originally Posted by ThePass
(Post 1558747)
Street class allows a singe element wing, 5" splitter and up to 4 canards. Doing a collab with Blackbird Fabworx to put together what we want for this car. I have a Kognition airfoil that was retired from duty on Hyper a few years ago, that's about the most effective single element out there so will do a set of stands for that, as well as fab up a class legal splitter, probably that rests against the bottom of the current lip spoiler on there. I'm not in a hurry to add canards, but will probably do some other details focused on improving drag/DF.
Honest question, what makes the Kognition foil the most effective single element? The data I've been able to find on it puts it at around 12:1 LDR? |
Originally Posted by ThePass
(Post 1558749)
There's some internet lore suggesting that you can update to the larger RX8 rear hub/bearing by swapping to RX8 spindles and scavenging parts of an automatic RX8's axles. We picked up a set of spindles/hubs/axles from an '05 auto RX8, will be putting fresh bearings in these and then work through the conversion and see if it's possible.
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Originally Posted by flier129
(Post 1558795)
Nice! IIRC, Street class doesn't allow front splitter diffusers/ramps, correct?
Honest question, what makes the Kognition foil the most effective single element? The data I've been able to find on it puts it at around 12:1 LDR? Re: Kognition, It's a high camber profile, one of the most aggressive single elements out there that still maintains flow attachment, so it will make the most DF possible for a given chord length and AoA. |
Originally Posted by JoshEE
(Post 1558798)
Edison_GTI over on TJ just did this if there's any info you're still looking for.
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Worked through the RX8 Rear Hub/Bearing/Spindle conversion today. Our donor parts came from a 2005 Automatic RX8.
RX8 Spindle (Left) and NC spindle (Right). https://photos.smugmug.com/GWR-Budge...IMG_2083-L.jpg RX8 Bearing (Left) and NC bearing (Right). Both are 80mm OD, but the RX8 bearing is 5mm longer, with larger ID for the larger axles (45mm vs 42mm): https://photos.smugmug.com/GWR-Budge...IMG_2084-L.jpg RX8 axle stub, 31 splines (Left) and NC axle stub, 28 splines (Right): https://photos.smugmug.com/GWR-Budge...IMG_2082-L.jpg RX8 hub (Top) and NC hub (Bottom). Tried to take this picture a couple different ways, it's kind of hard to tell in the photo but the radius between the hub flange and the shaft is much thicker on the RX8 unit i.e. stronger: https://photos.smugmug.com/GWR-Budge...MG_2087-XL.jpg RX8 spindles with fresh bearings pressed in and our ARP extended studs swapped over from the previous NC hubs, ready to go in the car: https://photos.smugmug.com/GWR-Budge...IMG_2093-L.jpg The NC axles won't work with the RX8 hubs. The trick is to remove the outer CV joints of the RX8 axles and swap them on to the NC axles. Straightforward process; remove the CV boot and then hammer the outer end off the axle shaft with a brass hammer. It will go all at once when it pops past the C clip. The RX8 end goes on the NC axle shaft the same way, just hammer it on. The boots on the NC axles work on the RX8 ends. Removing the end: https://photos.smugmug.com/GWR-Budge...IMG_2098-L.jpg RX8 outer CV end (top) NC outer CV end (bottom): https://photos.smugmug.com/GWR-Budge...IMG_2102-L.jpg Finished NC/RX8 hybrid axles: https://photos.smugmug.com/GWR-Budge...IMG_2104-L.jpg And finally, we used the RX8 ABS sensors (left) instead of NC sensors (right): https://photos.smugmug.com/GWR-Budge...IMG_2106-L.jpg https://photos.smugmug.com/GWR-Budge...IMG_2107-L.jpg Weights: NC: Hub + Bearing 5.25 lbs Spindle 8.55 lbs Axle CV end 3.65 lbs Total 17.45 lbs RX8: Hub + Bearing 5.90 lbs Spindle 9.40 lbs Axle CV end 4.25 lbs Total 19.55 lbs Net weight gain just 2 lbs per side. |
Also installed our fresh differential today. 3.63 final drive to stretch the 6 speed's ratios out a bit, OSGiken LSD, assembled by the fine folks at Walter Motorsports with their upgraded race bearings, and topped off with SuperPro diff bushings:
https://photos.smugmug.com/GWR-Budge...IMG_2095-L.jpg |
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Oh man, this is so awesome. I love my kraken setup.
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Making progress! Here's where we left it last night. Things are coming together.
https://www.mazdatalkforum.com/downl...hp?id=6897&t=1 An update on turbo choice; for our power targets we know we want more than a 2860 can provide, so we discussed changing to a 30R, but during Fab9's test fit of the kit prior to sending to us they found that wouldn't fit so what we have here is a GT2871R. Garret rates this turbo for 280-475 HP on engines from 1.8L to 3.0L. With a 2.5L upwards of 300 whp, we should be right in the sweet spot with this turbo in terms of both spool and efficiency. |
Fab9 and Kraken working together to make a turbo kit or fab9 just buying a manifold from them?
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Why not the newer technology G25-550 or G25-660? They have made huge strides on the turbine side of these new turbos.
https://www.garrettmotion.com/racing...eries-g25-660/ |
They are still trying to stick to the "budget" side of the build.
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Turbo kit install is coming along fast. Slightly delirious from lack of sleep:
Should be rolling and doing some initial tuning later this weekend. https://www.mazdatalkforum.com/downl...hp?id=6905&t=1 https://www.mazdatalkforum.com/downl...hp?id=6907&t=1 https://www.mazdatalkforum.com/downl...hp?id=6906&t=1 https://www.mazdatalkforum.com/downl...hp?id=6904&t=1 |
Some sneak peeks...
Blackbird Fabworx NC RZ roll bar in signature blue, and Blackbird Fabworx NC fire extinguisher bracket with Halotron extinguisher. https://www.mazdatalkforum.com/downl...hp?id=6912&t=1 https://www.mazdatalkforum.com/downl...hp?id=6913&t=1 |
This is awesome.
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Y'all keep making me think Things about my NC.
Will NC Xidas go on in the prep for Superlap as well? |
Originally Posted by Uncle Hoonsalot
(Post 1559804)
Y'all keep making me think Things about my NC.
Will NC Xidas go on in the prep for Superlap as well? |
We are up and running! Had to work through a few details to get everything happy and working together - as is the case with any major changes (MAP sensor was giving us issues and had to backtrack to a returnless fuel setup for now). Tuning with Mike at Xero Limit the last few days. Car is now up and running well on wastegate @ ~8psi with a conservative tune on pump gas. Already feels pretty quick. We swapped the hood over from our silver 2007 supercharged car for the hood venting goodness, and the Blackbird Fabworx NC RZ roll bar is now fully installed and providing some nice pop! Getting loaded up and hitting Willow Springs Raceway tomorrow :naughty:
https://www.mazdatalkforum.com/downl...hp?id=6922&t=1 |
I never thought I'd say this, but that's a really good looking NC
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Just saw it on the road today on I5 South. We were on the way to the taco shop and you flew past in the fast lane. Looks good in motion!
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Exciting times at Willow Springs! I only got some baseline laps in but the car was already ripping. WSIR is a fast track. Just on low boost and conservative pump gas tune at this point and already keeping up with a Porsche Cayman down the long front straight. Had a bunch of fun in those five laps catching some fancy hardware including a Corvette and several Porsches.
https://www.mazdatalkforum.com/downl...hp?id=6929&t=1 The fun was ended early by smoke and fire, but I was able to react fast to it. Everybody reading this has a fire extinguisher in their car, RIGHT? With quick reaction the damage was contained pretty well. The turbo had melted the plastic valve cover. It should be noted that our GT2871R turbo is larger than the 2860 intended for the kit, so it sits closer to the valve cover, and we had already done hours of street driving/tuning with no hints of this issue. I feel confident saying a street car wouldn't encounter this. Just goes to show what we already know - that there's nothing else like the abuse of track use. Everyone on this forum knows this well, but many don't. Melting stuff never looks pretty, but the good news is a turbo blanket will solve this issue easily. We've already spoken with the folks at PTP and got a blanket here. Going to replace the valve cover and a few of the hoses that got a bit crispy, get this blanket on, and get back out there for further testing. https://www.mazdatalkforum.com/downl...hp?id=6930&t=1 It was a cool day but temperatures were rock solid, so it looks like we're on the right track with the oil cooler development. We've been trying a few different cooler cores and configurations, honing in on what we'll offer in the kit. More to come on that front after more testing. |
So we stole the Supercharged NC's vented hood for WSIR, but that was a limited time deal, supercharged 2007 wants that hood back! So the turbo car got it's own set of hood louvers today, just in time for our Cars & Coffee event tomorrow.
https://www.mazdatalkforum.com/downl...hp?id=6940&t=1 https://www.mazdatalkforum.com/downl...hp?id=6941&t=1 |
Crispy bits replaced, heat controlled stepped up a notch or two and engine bay tidied up. More testing coming soon.
https://photos.smugmug.com/GWR-Budge...MG_2338-XL.jpg https://photos.smugmug.com/GWR-Budge...MG_2356-XL.jpg |
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