1 ... 5 6 7
Floating Doc
Floating Doc SuperDork
8/1/19 8:09 p.m.

Sorry to see this thread come to an end. You've done a good job of documenting, and it's been fun to read.

I have also learned some things. I had assumed that all time attack events were just time trial laps on a race track.

This looks more like autocross.

docwyte
docwyte UltraDork
8/2/19 12:10 a.m.

Dynos don't read the same but its unusual to see a 60fwhp difference.  10hp?  Sure, maybe a bit more, but not 60.

J1000
J1000 Reader
8/2/19 10:15 p.m.

Well, I mean that's what it said. The tune was the same, the car was the same, fuel the same, etc. It was maybe 10F warmer ambient but that's all. Dynos man.

spandak
spandak Reader
8/2/19 11:50 p.m.

Same gear and everything? 

Also bummed, I like this car

J1000
J1000 Reader
8/14/19 12:43 p.m.

I really love this car too. The thread won't end just won't have as much autocross action any more. I just got my Miata on the road with new wheels, tires, and brakes and it's pretty much the greatest.

 

As some of you may remember when I swapped in my K20Z3 motor the oil pan was cracked. I JB Welded it and have been driving it that way. It started weeping a little oil, but it's small enough to keep ignoring for now. I was going to pull the motor this winter to replace the oil pan and do timing chain stuff but I've just been thinking of doing a whole bottom end swap. A good condition K24A2 long block can be had easily for $500 or less. The K20Z3 head swap onto the K24A2 block creates a beastly motor that comes close to n/a 300whp. That could be a lot of fun for practically no money if I resell the parts left over.

J1000
J1000 Reader
8/23/19 8:14 p.m.

I just put a car up on BringATrailer.com so I'm shamelessly promoting it. I bought this little white 97 Miata from an acquaintance of mine who was forced by his wife to sell it :( my wife loves it but has trouble with the top so she doesn't drive it much and doesn't want to keep it. This car is amazing but I already got my black one ya know.

If anyone has questions please contact me through bringatrailer.com only.

https://bringatrailer.com/listing/1997-mazda-mx-5-miata-22/

Hoondavan
Hoondavan Reader
8/29/19 4:43 p.m.

This has been a great thread. It's great to see how you took a "good" car, made it great, then made it a little "too great" for competitive purposes.  I'm sure your time in a FWD will help improve your RWD driving as well.  Best of luck w/your MX-5.


 

Nitroracer
Nitroracer UltraDork
8/29/19 8:39 p.m.
J1000 said:

I really love this car too. The thread won't end just won't have as much autocross action any more. I just got my Miata on the road with new wheels, tires, and brakes and it's pretty much the greatest.

 

As some of you may remember when I swapped in my K20Z3 motor the oil pan was cracked. I JB Welded it and have been driving it that way. It started weeping a little oil, but it's small enough to keep ignoring for now. I was going to pull the motor this winter to replace the oil pan and do timing chain stuff but I've just been thinking of doing a whole bottom end swap. A good condition K24A2 long block can be had easily for $500 or less. The K20Z3 head swap onto the K24A2 block creates a beastly motor that comes close to n/a 300whp. That could be a lot of fun for practically no money if I resell the parts left over.

What wheels did you end up going with on the Miata?  I don't recognize them, but they look good.

I'm also more interested in the K-series engine you are talking about, with a K24A2 bottom end and K20Z3 cylinder head.  Where is the best place to learn more about this?

J1000
J1000 Reader
9/1/19 8:01 p.m.

Thanks, I cut my teeth in Spec Miata and raced in the VW TDI Cup so I can appreciate FWD or RWD.

I'm in L.A. on vacation and in just a couple of days I've seen more EP3s than I've seen in CO in YEARS. All of them are pretty beat up though.

 

Nitroracer, you can search K20/24 hybrid or other combinations of the engine codes. Basically the Z3 head will fit right on just like stock. 

The wheels are Jingbleeds 15x9. I like em a lot.

J1000
J1000 Reader
9/29/19 3:17 p.m.

I've been having a CEL keep coming up for a misfire so I thought it might be time for new COPs. One of the threaded holes in the valvecover was already on its last legs and I had JB Welded it before, this time that wasn't going to work. I bought a set of M6 E-Z Lok threaded inserts. I've used these before and they are so good, I love them and how easy they are to install. I drilled out the hole, tapped it, and now it's good as new.

J1000
J1000 Reader
10/5/19 12:34 p.m.

The misfire code didn't go away. Sometimes it is just one or two cylinders, sometimes it's three or four. Probably time to dig into the tune, I noticed I'm getting some knock every once in awhile at low throttle cruise. 

jtrue
jtrue New Reader
11/18/19 7:59 p.m.

Signed up just to say nice build, I'm in the process of swapping a JDM K24A w/ RBC, K20A2 pump, 50 degree VTC gear into my 04.  I haven't read the entire thread yet, but what are your opinions on the SHG Delrin steering rack slider for a car that will see most if not all of it's time on a track? 

 

It's a slippery slope getting into a project like this because it's easy to start replacing anything and everything.  It's also amazing to find how beat up some of the bushings/engine mounts were.  I will be swapping in Innovative Billet mounts and have started to install spherical bearings everywhere I can.  Just pressed in the PCI front LCA sphericals, it was a pain in the ass, but I think they will help significantly.  I'm running the Street Basis Z's since that's what came on the car, how much improvement did you see with the Ksports, I think I might go Feal 2 Ways.  Cheers!

Photos before the swap with stock A3.

 

J1000
J1000 Reader
11/22/19 4:14 p.m.

Sweet EP3! I would say the delrin slider most definitely should be a priority for any EP3, really. You definitely want to look into it. From what I remember it's pretty cheap and easy to do when the engine is out. All of those front end parts made a huge difference; inverted tie rod mounts, extended ball joints, delrin slider bushing. I would do those on any EP3 even if the rest was stock.

I dig the K24 swap idea! Do you have a thread yet?

I'm definitely very happy with the KSports, especially on the road. For a dedicated track car I'd want something better, though. Since my car is a road car I didn't go nuts with the motor mounts, I just went stock except for the very front mount which wears out fast, I went with the softest Innovate and am happy with that.

jtrue
jtrue New Reader
11/26/19 12:25 a.m.

In reply to J1000 :

You've talked me into the delrin slider, I already have extended roll center ball joints and inverted tie rod ends, I've  gone this far and have the entire winter to work on it.

No build thread yet, currently rebuilding an NRH3 transmission with new synchrotech carbon Synchros and mfactory 1.5 LSD.  Waiting on the correct diff and mainshaft shims.  

Motor as it sits:

J1000
J1000 Reader
1/7/20 9:11 a.m.

MotoIQ has been building up an awesome K24: https://motoiq.com/getting-the-most-from-91-octane-pump-gas-with-a-honda-k-motor-part-three/

Although I have a sneaking suspicion they may have ditched their project EP3 in favor of an RSX the way these article are written. For shame!

1 ... 5 6 7
Our Preferred Partners
GlUF0lsWtV1oxoy2oTWft7zagr06h1p0nyoy94xTTrrqRic2mb43JspKtvdj7kqw