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AxeHealey
AxeHealey SuperDork
9/18/24 9:08 p.m.

Oh boy have I been busy. For a variety of reasons I pretty much lost the entirety of last week. That said, the "new" engine is just about ready to go into it's new home - Sven's engine bay.

I went into this telling myself I was just going to toss it in there but the leaks were just bad enough that I couldn't get myself do that. I'm now sitting here thinking I really should do the rear main since I pulled the flywheel that was on this engine to use the FM happy meal. There's almost no reason not to so I'll probably pick one up sometime tomorrow and be ready to get this engine in on Friday or over the weekend.

AxeHealey
AxeHealey SuperDork
9/20/24 2:34 p.m.

Holy cinnamon crunch bagel. 

New seal in. Highly doubt it'll seal all that well even though I spent some quality time with emery cloth. 

AxeHealey
AxeHealey SuperDork
9/22/24 8:15 p.m.

Here's something I haven't run into before in Miataland. 

Peep the coolant neck on the back of the head that came out of Sven. It goes straight out to the driver's side.

The one on the "new" engine goes upward meaning a hose cannot go on once the coil bracket is in place.

I'm thinking this must be a piece off a 1.8 although I'm not sure. My options are to swap the pieces over or hack the bottom mount off the coil bracket. Considering Mazda seemed to think it needed the third mounting point, I'll probably be swapping them around. 

EDIT: A Miata buddy has confirmed this is a 1.8 piece that has just been put in this head. 

AxeHealey
AxeHealey SuperDork
9/25/24 8:17 p.m.

I swapped that coolant neck along with various other remaining bits and went to toss it in the car this afternoon over work breaks. 

At this point I have removed and replaced many a Miata engine, multiple times by myself. This time, for whatever reason, was a BEAR. I wasn't able to get it in until my wife got home and I could muscle it into place while she let the engine hoist down. Sheesh.

Hopefully tomorrow I'll be able to get everything all hooked up and maybe even fire it up.

 

Note - there's no oil in it, man.

AxeHealey
AxeHealey SuperDork
9/27/24 6:01 p.m.

I was on Daddy duty today and put the kids to work. My daughter had a half day and my son never has preschool on Fridays. This morning, he and I got fresh oil in Sven, added water and fired it off.

It built great oil pressure right away and although it got a little hotter than I'd like waiting for the t-stat to open, it did eventually open up and the fans also kicked on. Success.

This afternoon while my son was napping I made up a mount for the rain light making sure to not make any holes in the filler panel because that would be Miata sacrilege. 

Then I enlisted my daughter to turn on the lights and hit the brake pedal so I could figure out the taillight wiring without a diagram.

I dislike scotch locks. Wiring directly into the back of the plug brings me joy.

AxeHealey
AxeHealey SuperDork
10/2/24 9:23 a.m.

Sven's quick little test drive went well yesterday. Drives straight, stops straight. Seems good. 

When I first went to drive it there was zero clutch pedal. When I had the engine out I was, can't make this up, sitting in the driver's seat making vroom vroom noises and pressed the clutch pedal. DOH! I pushed the rod back in but clearly that let some air in. Bled it no problem. 

Between now and when I leave for the track Friday morning I need to do a nut and bolt and take a look at the trailer wheel bearings. Well, and pack. Oh and hopefully I have a chance to give it a bath and vacuum. 

 

AxeHealey
AxeHealey SuperDork
10/7/24 1:12 p.m.

First of all, I accomplished most of what I wanted to before leaving (late) on Friday. The trailer bearings were attended to. A couple of them weren't what I would describe as in amazing shape but they cleaned up fine and roll smooth. Sven got a nut and bolt and a vacuum but no bath. 

I rolled into PittRace around 2-ish on Friday, put the ramps down, hopped in Sven and it wouldn't start. After some tracing we decided it had to be the starter so we push started it to get through tech.

More-or-less tech was no problem. They didn't like that the rain light came on whenever the lights are on and also did not like that it comes on with the brake lights. AER wants to see it come on with the brake lights. ChampCar does not allow a rain light at night. I suppose it's just one of those things that one runs into when competing with multiple organizations. Since there was no rain expected, I just unplugged the ground. They also said that this year they started suggesting the Flagtronics unit to be mounted up high but I had mine mounted down by the shifter - more on that later. 

After tech I went about setting up the paddock and my tent. My co-driver, Jake, was bringing a new (used) starter so I pulled off the old one. Yeah, it wasn't gunna work well. 

That ground strap wasn't totally missing when I pulled it off but when I looked at it, it crumbled away. Once Jake showed up, we had the new starter in pretty quickly and after chasing a loose connection, it fired up great. 

PittRace never disappoints with sunsets and sunrises. 

I was in Sven for the start on Saturday morning and had a great stint. Last time Sven was at Pitt two seasons ago, our best time was my 2:14 which was also my fastest time around the track in any of the various Miata I have run there. Saturday morning I ran a 2:12 which I was very pleased with. I was out there for 1:45 and almost ran out of gas. I had fuel starvation coming out of 6, in the esses and up and over 14.

During Jakes stint, he came back after an hour or so and said he thought the clutch slave was failing and wanted me to get in to check it out. Sure enough, after feeling fine for a couple laps, downshifts became nearly impossible. He had a lot of Code 35s in that stint so we thought maybe the fluid had just gotten really hot from heat soak and created a bubble so we took it to the paddock and bled it. The pedal still didn't feel great but we sent him out to try it. He didn't even make it to pit lane. He and our other teammate started pulling it while I roamed the paddock looking for a replacement - which I found very quickly. We had it swapped over and bled in another 20 min or so and he was back out on track. All told, I think we lost 1-1.5 hours dealing with it but it ran the rest of the day with no issues. 

Our teammate wasn't really up for driving on Saturday so Jake and I shared all of the seat time. For my second full stint, I went out and oil pressure said 0. Everything sounded OK so I limped it back to pit, they wiggled the wire and it came back. It then went out again half way around so I went back in. They wiggled it again and, nothing. So I made the decision to just run it without the gauge. Other than that, the rest of the day was mostly uneventful aside from a Fox Body having a huge wreck. 

Unbeknownst to me, ChampCar created a new "F" class recently. If I would have removed the heim joint end links for the sway bars, Sven would fall into that class and we would have ended Saturday in second place in F. As it turns out we were well down the list in "A". Oh well. 

Last year I didn't really have an issue seeing the Flagtronics down by the shifter but I really wasn't catching it well on Saturday so I moved it to where it probably should have been since the beginning.

I found a break in the oil pressure sender wire trimmed it back and put a new end on it. After swapping front left with right rear, Sven was ready for Sunday.

I, again, was the starter. It was a relatively clean stint other than an E30 oiling all across part of the track in the esses. Our third teammate actually went home Sunday morning so it was just me and Jake all day Sunday. Jake's first stint was also uneventful although he did have a few Code 35s again. 

My second stint yesterday was... interesting. I had zero slow downs whatsoever. That may be a first for me in 7 (8?) seasons endurance racing. This meant two things. One, Sven was absolutely CHEWING through gas. Second, a day and a half of running two drivers started to catch up to me. About 50 minutes into my stint I started to get a bit of what I'll call target fixation. Twice coming into turn 3, I caught myself just staring straight ahead into the grass and trees and not letting up on the brakes and once through the esses I felt the car starting to push and literally made zero correction whatsoever which sent me coasting directly into the grass for a little ride. I was actually considering pulling in early until one of my friends pulled up next to me coming out of turn 6, gave me a cutesy little wave and totally snapped me out of it. 

Because of the fuel usage, Jake went back into the car with 2 hours left. He got very "lucky" with two Code 35s and a few yellows and somehow stretched fuel, running 3 minute laps at the end, all the way to the finish. We again would have been second on the podium in "F" class.

Sven is really such a joy to drive. Totally predictable, very catchable when it breaks free, does exactly what you ask of it and is just a whole lot of fun. 

This will likely be it's only use this year, unfortunately since AER at Mid-O is canceled. I'm doing mental gymnastics as to the plan for next year. Do I do all that I can to be extremely competitive in "F" or do I follow the plan all along and start into aero, etc.

Time will tell!

AxeHealey
AxeHealey SuperDork
10/9/24 4:59 p.m.

Sven has been looking pretty busy to me so all of the unnecessary stickers have been removed. 

Also. 

I've been wanting to give 225s a try on Sven for a couple seasons now and considering how light these are, I figure it was worth a pick up. My thought is that even if I don't go the aero route, 225s should still heat up enough to provide a great level of grip and should be even more durable than the 205s have been considering they won't be stressed very much. The plan would then to run 205s on the K1s as a rain set up.

AxeHealey
AxeHealey SuperDork
10/10/24 8:21 a.m.

I almost forgot the biggest disaster of the weekend. The OG window bushings disintegrated. Can't have that with Sven living outdoors. 

AxeHealey
AxeHealey SuperDork
10/23/24 3:01 p.m.

I have done a bit more research into "F" class. A car fits into "F" with a points value of 300 or less. Miata's have a base value of 250. 

As of right now, the plan for Sven for next year is:

  • Remove the coilover set up
  • Remove the heim joint end links
  • Add good shocks, likely with after market springs
    • +20 pts (5 per spring per corner)
  • Add stock-style end links
    • +0 pts
  • Add an actual splitter
    • +10 pts
  • Add a wing
    • +10 pts
  • Add some Guac-like aero such as the upper fender vents and rear fender cut outs.
    • Potentially 0 pts, maybe 1-2 for use of sheet aluminum. 

This would put the car at 290 ish which would leave room for a future diffuser (+10) or usage of various bits of sheet metal for Guac-like aero work which, I believe, is counted at 1 pt per square foot used. 

A splitter of some sort is kind of necessary to support the bumper because of how the front support has been hacked up so I figure that's a definite. I could keep the coilover sleeves, remove the heim joints and be right at 300 also but, as I learned building Guac, you really want the front and rear down force to balance out. 

I could also cut down stock springs, gain 20 points back into the budget and use that elsewhere. 

Whatever way I end up going, I think the best move for this car is "F" for next year. Hopefully schedules work out and we can hit 3-4 weekends with it!

AxeHealey
AxeHealey SuperDork
11/6/24 4:38 p.m.

Yes, and thank you for the warm welcome. 

It's amazing how much heavier it is than the carbon wing I had on Guac but I'm very excited for this!

accordionfolder
accordionfolder UltraDork
11/7/24 11:40 a.m.

Fantastic thread! I have always preferred sprint racing but you're making me consider doing some endurance racing. I have a little herd of Miata myself!

You might already know of this site and/or know the info there, but it's a great place for NA aero info with data backing it.

occams racers

 

If you can for low point an airdam and removing the parachute are accepted ways of getting lap times in NA without going into "real" aero.

 

**Edit, I somehow missed your last post with wang added, haha, so maybe ignore the other info

AxeHealey
AxeHealey SuperDork
11/7/24 1:40 p.m.

In reply to accordionfolder :

Thanks!

I would strongly suggest giving endurance racing a shot. It sometimes gets a bad wrap from people thinking it's just cruising around the track for hours on end but it's really not. You're still driving hard and having great battles. I'd say the the biggest differences are you may not be quite as aggressive with passes because each individual pass doesn't mean nearly as much and you get 2-3x the seat time in a given weekend. 

I do know of that website and have it bookmarked. 

As it sits currently, the parachute has been trimmed but I have been dreaming up a bigger cutout. I know it would save some time but I just don't like the look with no bumper at all. A diffuser counts towards points I can't afford though so getting more air out of there is super important.

 

AxeHealey
AxeHealey SuperDork
11/26/24 9:37 a.m.

I'm told this is common place for the extrusions but I just love how provisions for end plate mounts are in the entire length of the wing. Sure, it adds weight but what a great, simple solution that surely streamlines production. 

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