NB vs NC - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Race Prep Miata race-only chat.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 03-08-2014, 11:27 AM   #1
Elite Member
Thread Starter
 
Join Date: Oct 2011
Location: OKC, OK
Posts: 2,644
Total Cats: 76
Default NB vs NC

I've decided to part out the NA and take the year off from track work. I want to get my track "infrastructure" better in place and do some things around the house.

At the moment, I'm keeping the 949 BGK and 4-corner Wilwood setup with the thought I will pick up a clean NB2 this winter. Install baller suspension/brakes, add roll bar/seats/harnesses, and leave the drivetrain basically stock for a season or two and just enjoy.

However, last night and this morning I was thinking with the price of higher mileage NC1s coming down, they could be a better choice. Better rear suspension, stock brakes, more room for rubber, stiffer chassis, etc.

But there doesn't seem to be nearly as many suspension/tuning/etc. options for the NC as for the NA/NB.

Thoughts?
z31maniac is offline   Reply With Quote
Old 03-08-2014, 11:31 AM   #2
Senior Member
iTrader: (14)
 
Join Date: Jan 2007
Location: Murfreesboro,TN
Posts: 1,277
Total Cats: 53
Default

I'm going off a brief conversation I had with a NC owner 4 years ago, but they told me the early NC motors don't take abuse as well as the later ('09+ I think) motors do. From what I recall, the '09+ got better lower internals.
Midtenn is offline   Reply With Quote
Old 03-08-2014, 12:58 PM   #3
Senior Member
iTrader: (1)
 
Join Date: Mar 2008
Location: Cromwell CT
Posts: 1,106
Total Cats: 48
Default

Swap a 2.5L bottom end!!
ctdrftna is offline   Reply With Quote
Old 03-08-2014, 12:58 PM   #4
Supporting Vendor
iTrader: (3)
 
Join Date: Jul 2006
Location: San Diego
Posts: 2,863
Total Cats: 485
Default

Assuming it's within budget, NC hands down. There are plenty of aftermarket options for things, especially since you don't want to do anything crazy to it, just the basic stuff. Brakes, Suspension, Wheels, etc. all have plenty of directions you can go, and fabrication for safety stuff isn't model specific.

-Ryan
ThePass is offline   Reply With Quote
Old 03-08-2014, 01:37 PM   #5
Elite Member
Thread Starter
 
Join Date: Oct 2011
Location: OKC, OK
Posts: 2,644
Total Cats: 76
Default

Quote:
Originally Posted by Midtenn View Post
I'm going off a brief conversation I had with a NC owner 4 years ago, but they told me the early NC motors don't take abuse as well as the later ('09+ I think) motors do. From what I recall, the '09+ got better lower internals.
09+ MANUAL engines got a forged crank and 500rpm higher redline.

If you kept the stock 7000RPM redline, I don't think it would be an issue. But I haven't looked around enough to see if there are other issues that come with tracking an NC.

The stock intake manifold doesn't seem to breathe particularly well higher than that anyway?

If wasn't so low mileage, I'd spend the rest of the year paying off my '06 Miata and turn it into a track rat. But a GT with 44k miles is still worth a bit much for that. (It's going up for sale soon)
z31maniac is offline   Reply With Quote
Old 03-08-2014, 01:41 PM   #6
Elite Member
Thread Starter
 
Join Date: Oct 2011
Location: OKC, OK
Posts: 2,644
Total Cats: 76
Default

Quote:
Originally Posted by ThePass View Post
Assuming it's within budget, NC hands down. There are plenty of aftermarket options for things, especially since you don't want to do anything crazy to it, just the basic stuff. Brakes, Suspension, Wheels, etc. all have plenty of directions you can go, and fabrication for safety stuff isn't model specific.

-Ryan
Does it even need brakes at stock power levels? I know pad taper will always be a concern on sliding caliper setups, but they seem pretty decent.

Also, I need to look around and see what the "hot setup" is. IE, I don't feel like dicking around trying to figure out spring rates, etc. I essentially would want to do what I did with the NA:

Call winning vendor, ask for THE setup, give my CC info.
z31maniac is offline   Reply With Quote
Old 03-08-2014, 01:45 PM   #7
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 8,465
Total Cats: 782
Default

I'd just make a "I'll have what you're having" call to Goodwin.
concealer404 is offline   Reply With Quote
Old 03-08-2014, 02:01 PM   #8
Senior Member
iTrader: (1)
 
Join Date: Jun 2006
Location: Sweden
Posts: 1,391
Total Cats: 58
Default

Quote:
Originally Posted by ctdrftna View Post
Swap a 2.5L bottom end!!
NC 2.5 vs NB with K24 swap?
The NC would be cheaper as a track rat I assume.

Sure there is a bigger aftermarket support for the K24 than the 2.5 MRZ, but they are reasonably equal in stock output (if you use the MX5 head and cams).
NiklasFalk is offline   Reply With Quote
Old 03-08-2014, 02:25 PM   #9
Junior Member
 
Join Date: Aug 2010
Location: Texas
Posts: 162
Total Cats: 11
Default

robertcope is offline   Reply With Quote
Old 03-08-2014, 02:39 PM   #10
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 8,465
Total Cats: 782
Default

Holy hell that's serious business.
concealer404 is offline   Reply With Quote
Old 03-08-2014, 03:05 PM   #11
Elite Member
Thread Starter
 
Join Date: Oct 2011
Location: OKC, OK
Posts: 2,644
Total Cats: 76
Default

Quote:
Originally Posted by robertcope View Post
Uhhh yeah, that's badass. But FAR beyond my meager salary unless some unknown relative leaves me a chunk of cash.

So it seems pretty straightforward that if I can make the budget for an NC work, go that direction, if not, clean VVT car. So I'll hang on to the XIDAs/Wilwoods for now.
z31maniac is offline   Reply With Quote
Old 03-08-2014, 03:20 PM   #12
Junior Member
 
Join Date: Aug 2010
Location: Texas
Posts: 162
Total Cats: 11
Default

Quote:
Originally Posted by z31maniac View Post
Uhhh yeah, that's badass. But FAR beyond my meager salary unless some unknown relative leaves me a chunk of cash.

So it seems pretty straightforward that if I can make the budget for an NC work, go that direction, if not, clean VVT car. So I'll hang on to the XIDAs/Wilwoods for now.
Haha yeah, sorry, I just had to share because.. it is awesome.

If my '99 was lost somehow, I would start with an NC, I think. I've had a few friends do that and it seemed like it didn't take much to make them pretty awesome track cars... suspension, seat, harness... go.

robert
robertcope is offline   Reply With Quote
Old 03-08-2014, 08:42 PM   #13
Elite Member
iTrader: (5)
 
Join Date: Dec 2010
Location: Raleigh, NC
Posts: 1,970
Total Cats: 49
Default

NC hands down also.

Reliability issues are probably pre larger oil cooler years. I think that's the 06 only, but don't remember. I would google around about it.

also NC2s tend to fair better on track from some light reading a did a year ago. You can swap the NC1 bumper onto an NC2, so if its within budget, you don't have to be the goofy smiley car on track.

Otherwise, NC won't have as strong aftermarket support as the NA/NB until it gets cheaper. With that said, it still has plenty of good support and the playboy cup gives you a pretty good marker to compare with.

Also another bonus point is it seems there is the ability to swap heads/blocks for more NA power. That seems like a big bonus to me! Not that there is anything wrong with Turbos...which I am sure an NC will take very well also!
Seefo is offline   Reply With Quote
Old 03-08-2014, 08:59 PM   #14
Junior Member
 
Join Date: May 2012
Posts: 68
Total Cats: -3
Default

Woof.
Quote:
Originally Posted by robertcope View Post
compaddict is offline   Reply With Quote
Old 03-08-2014, 09:16 PM   #15
Elite Member
Thread Starter
 
Join Date: Oct 2011
Location: OKC, OK
Posts: 2,644
Total Cats: 76
Default

Quote:
Originally Posted by Track View Post
NC hands down also.

Reliability issues are probably pre larger oil cooler years. I think that's the 06 only, but don't remember. I would google around about it.

also NC2s tend to fair better on track from some light reading a did a year ago. You can swap the NC1 bumper onto an NC2, so if its within budget, you don't have to be the goofy smiley car on track.

Otherwise, NC won't have as strong aftermarket support as the NA/NB until it gets cheaper. With that said, it still has plenty of good support and the playboy cup gives you a pretty good marker to compare with.

Also another bonus point is it seems there is the ability to swap heads/blocks for more NA power. That seems like a big bonus to me! Not that there is anything wrong with Turbos...which I am sure an NC will take very well also!
Thanks for the additional input, it's greatly appreciated.

I actually don't see the need for much more power beyond the I/H/E/Tune on an NC. IIRC stock they tend to put down around 140whp, and the aforementioned mods tend add 25-30whp. So I can see an NC with 165-170whp, 225-235 Rcomps and a good suspension being a beast on track.

At least for my home track (Hallett) and the tighter tracks in the NASA Mid-west region.

Hopefully, I'll get to keep killin' the OT at work this year.
z31maniac is offline   Reply With Quote
Old 03-09-2014, 10:56 PM   #16
Senior Member
iTrader: (4)
 
mr_hyde's Avatar
 
Join Date: Jul 2009
Location: Seattle
Posts: 799
Total Cats: 25
Default

So it's decided! I'll give you $500 shipped for the BGK and brakes.


mr_hyde is offline   Reply With Quote
Old 03-09-2014, 11:28 PM   #17
Senior Member
iTrader: (2)
 
Join Date: May 2010
Location: Beckley, WV
Posts: 868
Total Cats: 36
Default

Wow that build makes me want an NC. Now where can I find one for the price I paid for my NA.
Tekel is offline   Reply With Quote
Old 03-10-2014, 03:35 PM   #18
Elite Member
Thread Starter
 
Join Date: Oct 2011
Location: OKC, OK
Posts: 2,644
Total Cats: 76
Default

Quote:
Originally Posted by mr_hyde View Post
So it's decided! I'll give you $500 shipped for the BGK and brakes.


Change the 5 to a 4, and add a 0 to the end and we can talk.
z31maniac is offline   Reply With Quote
Old 03-11-2014, 12:59 AM   #19
Senior Member
iTrader: (4)
 
mr_hyde's Avatar
 
Join Date: Jul 2009
Location: Seattle
Posts: 799
Total Cats: 25
Default

Quote:
Originally Posted by z31maniac View Post
Change the 5 to a 4, and add a 0 to the end and we can talk.
Can I put a decimal where I want?
mr_hyde is offline   Reply With Quote
Old 03-11-2014, 09:29 AM   #20
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,091
Total Cats: 90
Default

Another thing to consider. Should the worst happen and you ball up the car. the NB can be stretched, pulled, and massaged back into shape even if its REALLY bad. The NC, gets "lightly" tapped and you need a new tub. According to a local shop that rents both out for for road racing (and s2ks and RX7s).
Leafy is offline   Reply With Quote
 
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 11:00 PM.