Miatas Before the Gap Aug 1st 2019
 

Jzilla track-days is once again hosting a miata track-day the Thursday before Miatas at the Gap, Aug. 1 2019.

Registration: https://www.motorsportreg.com/events...ackdays-502906

https://www.facebook.com/miatasbeforethegap

Attachment 228349

Great event last year, even with the rain.





Who as is planning to attend?

If I don't blow up my motor (like last year) I'll be there

Planning on it unless I get too busy with SuperMiata East.

Bump!

Registration is open: https://www.motorsportreg.com/events...ackdays-502906

Thanks. Signed up.

Signed up as well.

Can't wait, hopefully we get to drive this track in the dry this year too. We'll be bringing 3 cars again and giving ride-alongs too.

Just signed up (I'll try not to blow up my engine this year)

I'll definitely be there this year, last year was a blast even in the rain!

I know a few people who came down ran afoul of AMP's sound limits last year weren't happy. I didn't see it posted anywhere on the event information. I know my car comes just under the limit (hi-compression VVT, RB header, test pipe, and Magnaflow exhaust. Per AMP's website, "The limit is 98 db at 50 feet from track edge, inside and outside for cars"

There's no excuse for a street car being louder than that anyway. And cops should be ticketing the fagg0ts on those Harleys as well. Get off my lawn!

Haven't you heard? Loud pipes save lives!!

Not riding Harleys saves a lot more.

Most of the deaths around here are with loud pipes and no helmet so I'd say the pipes don't help with traumatic brain injury.

Steve, you guna come drive AMP this year?!

Not sure yet. I've got to get motivated to finish my modifications and get the car back on the road right now. I just put a tubular subframe from V8 roadsters under the front and added a much larger radiator. Still have to do new undertray and alignment and figure a few other things out.

A few other issues I'm going to be a wimp about. I don't like track days in the heat very much, I worry about breaking the car and not being able to drive it the whole weekend, and I've got to carry even more spare stuff for a track day. Additionally, my buddies from down here usually can't take that many days off and last two years I had people riding with me up to the event.

We're like two months out..... damn.

Green / Novice is nearly full! Everybody keep their fingers crossed this year isn't soaking wet.

https://www.motorsportreg.com/events...ackdays-502906

It's too expensive to trailer my car all the way down to this, and too far away to trust the car without bringing a trailer...

bump to a neat event! see you all as I hardpark at Fontana...

The car is nearly ready. Now I guess I should book a hotel room.

I don't like that attitude

I'll be there running in the blue group again.

I'd really love to make it, trust me... it's just not in the cards this year. I'm looking forward to driving the car down instead of towing it like last year.

I suck at planning but I will be in area the next weekend for the Dragon Hillclimb in my k20 powered car Deviate! If anyone is still around look for me or swing by the hillclimb.

Damn that's a SEXY car in the ad graphic.

Looks slow.

Yeah but it's PURPL, so that's all that matters.

You want purple? I got your purple!
https://cimg2.ibsrv.net/gimg/www.mia...f36945b831.png

(ain't gonna win any style points, but I don't give a damn)

I'm into that. I'd rock that.

But it's not OG PURPL.

https://live.staticflickr.com/4354/3...1c17ee5e_b.jpg
Major Hater 2017 by concealer404, on Flickr

I concede to the Master...

https://cimg7.ibsrv.net/gimg/www.mia...3a4ea5c81d.png

Nobody rocks the prolapsed wheel fitment like i do.

Nice chin acne.

Yeah yeah, 19 years old, cut some slack.

https://cimg1.ibsrv.net/gimg/www.mia...0b5afaf512.jpg

Same age, no acne. You need to invest in some Clearasil. :facepalm:

Mine was probably painted on a Friday afternoon.

Registration closes TONIGHT!

Looking forward to seeing you guys out there. I'm instructing, and I'll probably run around in red group.

MBTG was a blast (even though I was relegated to the "Green" group)!

FrankenMiata (almost) survived the day. It's all fun and games until your non heat-shielded turbo melts a hole in your brake master cylinder, pukes brake fluid all over a red-hot exhaust manifold and starts a minor fire;
https://cimg9.ibsrv.net/gimg/www.mia...aca329f31.jpeg

It's all good, fire was small and put out quickly. I had to wait for "reinforcements" to come and tow me home, but I'll live to fight another day.

This event went great! I'm so happy it wasn't a down-pour the entire day too. Thank for everybody that came out! I hope we continue this event every year.





Here's a session I did with Cameron:




And here's one of my dad's sessions, I need to install a wheel spacer before he drives again:

Super fun event, thanks for having us!

David, thanks for taking me for a ride, that was insane. You have another person thinking about a K Swap now.

Awesome, just let us know when you're ready to go :)

I wish my camera was working - I had some fun trying to chase down a couple of those K cars in the Red group. I'd love to have gotten a ride in one as well, but all my time outside the run groups was spent instructing or trying to cool off.
I also found out that the weather was worth about 5mph on the top end (~105 IAT this event compared to 75 the last go around).

Anyone with a turbo BP engine care to share water temps and cooling setups from this event? I'm running a Supermiata radiator, no reroute, hacked up factory under tray and Singular vents. I was seeing about 225F towards the end of some of the afternoon sessions, which led me to back off a bit.

- 2871 Chinacharger knock-off
- Kraken manifold
- EBay aluminum rad
- No undertray
- Home-brew radiator ducting
- Singular vents (only the side vents, not the center)
- DIY reroute

Max temps all day - 196 F

Reasonable ducting that has some air bypassing the FMIC. 37mm Koyo Radiator. Reroute. Small intercooler (27 wide, 5.5 high, 2.5 thick) with oil cooler above it. Under-tray. Only running 175 WHP with my TD04 at 7.5 psi. 190* thermostat, Supermiata higher pressure cap. A/C still in place. I still need to plug the holes on the horizontal piece in front of the cross member (that is in front of the radiator).

Max MAT = 130. Max CLT = 210. Running 50/50 coolant. Thus, I could likely survive hotter ambients If I ran less coolant and more water, possibly with water wetter.

If I wanted to run more power, I would want a better intercooler.

Re-route is Step 1 in my opinion.

I only saw 110F for MAT, but my FMIC takes up the whole grille opening and the factory front air duct basically forces all the air through the opening through the FMIC before the radiator.
Might end up with a reroute after all, which I was hoping to avoid on account of the factory VVT head gasket.

Just spitballing here, which do you think might be more important, Inlet air temperature or coolant temperature? I would prioritize my placement of coolers appropriately for whatever my answer was.

My set up allows the air to travel above below and beside the intercooler on its way to the radiator because my radiator needs all the help it can get.

Just guessing here, but I would think that IAT has more impact on charge density and Max power (not mention the onset of lean conditions). Whereas CLT would be a danger for head warping or oil thinning with a pressure loss and bearing failure.

Pick your poison.

I may experiment with removing the front plastic baffle to let some air flow around the intercooler and to the radiator. 3 days at Grid Life coming up at the end of August is sure to be hot as balls so I'd like to have something figured out for then, though Road Atlanta isn't as bad as AMP for heat/air flow it seems. Are high intake temps more likely to cause knock than high water temps are to cause mechanical damage? I don't think mechanical damage will happen at 230F based on my experience with other engines, but I may be wrong.

AMP is so short that you don't really have a chance to cool down except between 16 & 1 (AMP is like a super-long autox course). RA is more typical of a long-ish road course.

I'd defer to the "real racers" on here, but my mind says that engines don't "like" hot air (thus intercoolers and the like), so high IATs = bad news. My (ancient) thermodynamics brain says, high temps = less ability to hold fuel in suspension = leaner mixtures = higher potential for pre-ignition/knock/detonation = crankcase ventilation.

In my car, I don't see temps much over 210F, even heat-soaked on I-285 in a traffic jam. Anything above that and I'd be parked on the side of the road waiting for things to cool down. Call me paranoid, but I've spun bearings because of oil starvation so anything that even HINTS of that gives me the willies.

After
https://cimg1.ibsrv.net/gimg/www.mia...91c59f8ae2.png

Lesson learned

I wondered what was going on, saw it right when I was leaving.




https://lh3.googleusercontent.com/Ft...=w1063-h797-no

He was baking brownies.

Mmmmm, brake fluid infused brownies. My favorite!!

Saw that too - scary! My solution was to wrap literally everything around the turbo with reflective heat tape or wrap... I just don't see how to build a box around the efr6258.

On the one hand, it was not as bad as it looked.

On the other hand - when I think that 30 seconds before everything went up in smoke I was foot to the floor, coming out of turn 14. Had the brakes failed then I would be writing this from a hospital bed.

Morello, I was overheating that day too. 1.6L running 10psi, SuperMiata radiator, reroute. Was’t data logging, but the stock temp gauge was unhappy. Went back the next week, same problem. I think AMP is just tough, heavy on the throttle with no long straights for airflow. Going back on Saturday, going to switch to straight water (currently running 1/3 antifreeze).

Any luck with that? I flushed and properly bled the cooling system before the grid life event at Road Atlanta this weekend and it went okay... Using distilled water and about 1 quart of coolant I was running around 220 most of the time, with only one session (Saturday afternoon) getting up to 230 before I backed off. I was also basically drafting a 996 Carrera down the back straight every lap, so that probably didn't help. Sunday was amazing - about 15 degrees cooler outside and the car was running at 210-215 all day.

I'll try to siphon a quart out and run some water wetter for the next event to see if that helps.. I also had a couple folks recommend punching holes in the bumper above the intercooler to feed some air directly into the radiator cavity...

Didn't help. I ordered Singular hood vents, we'll see if that does any good.