I'll be porting this thread over from a couple of different places, in a largely summarized fashion to capture 3 years of content. Please check out NASA Spec3 if you haven't and if you know about the class but haven't been up to date with it, please take a second look! The class is growing crazy fast and we now have 40+ cars in various stages of their Spec3 journey on the east coast. The mid atlantic region of NASA sees large fields every weekend and Northeast, Southeast, and Great Lakes are coming in hot. I hope to see the West Coast pick up again soon as we are seeing some interest there, but we just need a few people to make the plunge and commit to the class to get it started!
If you’re interested in more information, check out the official Spec3 page on the NASA National website https://drivenasa.com/road-racing/spec-3/ and join the discussion group on facebook at https://www.facebook.com/groups/spec3
Spec3 also has social media presence on Instagram and Facebook if you want to follow along with the action!
https://www.facebook.com/NASASpec3/
https://www.instagram.com/nasaspec3/
That's where the story begins. January 2019. The car, a 1995 BMW 325i sedan. 190,000 miles or thereabouts, repainted oxford green. About a million different owners (half of which I knew!).
One thing to remember is this is the ultimate budget build. I picked this class because E36s are a great chassis and the class rules call for an affordable and reasonable parts list. First up, burn the plastic money car at FCP Euro on a full rebuild of the front suspension and also install a roll bar from Bayside Fabrications.
The car went into hover mode as I waited for parts. New control arms, bushings, tie rods, sway bar end links, etc. My friend had just started up an automotive blog as well, so he chronicled some of it there.
https://outmotorsports.com/2019/01/woulda-coulda-shoulda-longest-spec3-build/
https://outmotorsports.com/2019/01/longest-spec3-build-disassembly/
If any of you have owned an old BMW, you know how much of a pain replacing rear trailing arm bushings is. This was the 5th or so time I've done them and it still gave me a hell of a time. It didn't want to come out with the special bimmerworld tool that I managed to break. Lots of drilling, hammering, and cutting, and the RTAB finally submitted to my will.
Did I mention almost all of this was just to get the car to pass inspection? I needed to be able to drive it to the track and it was still a year away from being eligible for antique tags!
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Installed the recommended front subframe brace that came as part of the "trunk kit" on LTW M3s. It stiffens the chassis and also protects the oil pan.
Stock :
with x brace:
Time for the first shake down! It was early March and the first track event of the season was nearing, so I wanted to do something to make sure the car wouldn't fall apart. There was an autocross an hour away, so I took it there for the day and put down some sad, un-competitive times. The car did not fall apart, so I was ready for the March VIR event with NASA Mid Atlantic.
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I'll just post my original write-up of the first event in the car for reference:
Monday, March 25th, 2019
[QUOTE]First weekend in DE2 and first weekend in this car was a success. I packed up the car Wednesday night and headed down Thursday to work. Packing all of my gear in the car, included 4 tires in the trunk, and I didn't even need to use the passenger seat. The car is a lot better than the other BMWs I've owned so the drive down wasn't too bad, just uncomfortable from the lack of seat padding, stereo, sound deadening, cup holders, etc.
I let my friend take the car out on Friday and he said it felt very good, which got rid of a lot of fears I had and instilled the confidence in me to really go out and rip on Saturday. My instructor was amazing and really let me push in a lot of places. I knew the line from the GTI, so I picked that up quickly again, but I was not expecting so much grip and so much braking. Having a purpose built car makes the whole experience a lot better and I was able to learn/improve a lot more since I'm not being held back by stock brakes and all seasons. The first day went well, with me only needing to point by the V8 cars in the straights, and otherwise had a lot of room and open track to play around on.
During my third session, a very intense vibration developed and I came back in to find that my right rear tire had separated belt from rubber and had a huge lump on the inside. This is likely due to this being a budget build and me running Toyo RA1s made in 2011. I ran around the paddock asking everyone for a tire to buy and eventually someone from Spec 3 let me borrow one of their rain tires to use for the last session. I then did some more walking around the paddock after the day ended and found a Spec 944 guy who sold me a full set of Ra1s for cheap. Unfortunately, those were even older (2008 manufacture date). I woke up very early Sunday morning and was the first at Phil's Tire service to drop everything off to get swapped over and chatted up someone dropping off some $erious rubber. They had a set of Toyo RRs (2017 Date) with plenty of life left they were tossing and they just gave them to me. They are not the exact size I run, but close enough, but I didn't have the time to get those swapped onto my wheels so I stuck with the old RA1s.
I did one session on the 3 2011 tires and the 1 2008 tire I bought and shaved off even more time. My instructor was silent throughout as I worked on getting Oak Tree figure out. By the end of the session, I was taking turn 3 at 70 mph indicated (speedo may be off a bit), the uphill esses flat in 5th at around 100 mph, and exiting oak tree at 60 mph. I compressed a lot of braking zones and got the zone at the end of the straight down to braking at the 1, which was a big improvement. My instructor told me he thought I was ready for DE2 solo and was about to sign me off for the rest of my sessions, but I discovered another one of the 2011 tires had developed the massive lump, causing vibration and a hard pull to the right and I was then out of tires and out of options as the guy I borrowed the wheel from had already left. I packed up knowing that I put down some good times and feeling confident that I may progress to DE 3 at some point this season, however I'm not in a hurry to not have awesome instructors helping me improve. I'm bummed that I had to quit early as I felt like I was really shaving off time every lap and making great improvements, but I'll settle for a major incident free weekend.
My current plan before April is to try to lose more weight from the car. It weighed in at 3170 with a full tank and me in it. Also, I'm going to swap those Toyo RRs onto my wheels and try to sell the 6 RA1s I have left to recoup some money if I can. I'll do a nut and bolt on the car and she should be good to go.[/QUOTE]
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The next event in April went well at Summit Point. I was signed off by my instructor to drive solo, so the weekend was focused on improvement and consistency. The next things done to the car after was more weight loss. I cut a lot of the interior out and spent some money on a steering wheel.
DIY headlight intake
The next event was the may VIR event and I had finally sold the GTI that originally got me on track in order to buy an F150. I rented a uHaul trailer and towed the car down. I'll post my write up from that event in a quote below
Tuesday, May 21st, 2019
[QUOTE]I didn't get to drive until Sunday morning after (an instructor friend) took my car out for a session. I texted him while I was on grid and asked how the car felt and he had no issues except it was bouncy in left hand turns. I figured that was just the fact that I had swapped tires without telling him and he went out with 50 PSI in the back left. I went out and immediately discovered a loud clacking sound that got really bad under left hand turns. I pulled in and had pit out check underneath and they found nothing. I went back out and got another 2 laps in before checker and I turned in.
I hoped it was just the fire extinguisher rattling around so I cut that loose and hopped in the passenger seat to head out with (my instructor friend) at the wheel and we didn't make it out of turn 2 before hearing the racket and bringing it back in the look. I asked pit out to look at my rear shock mounts to see if they looked funny. He checked and came back around to inform me that there was actually no shock back there. We pulled the car in and popped the wheel off to find that the shock piston has broken through the shock mount. I found a replacement part and threw it in and headed out for my next session. My friend left his AIM in there so I had some actual times for my first time on track. 2:27, 2:26, 2:25, 2:24.... Okay, I was picking up time, so I decided to keep pushing. Came in hot through Oak Tree and dipped a tire off... and the noise is back. I pull in and check the mount. This one is broken as well. Turns out I installed both missing a washer, so it was pure luck I hadn't blown them earlier. That was the end of my weekend.
I'm looking forward to Summit where hopefully everything can finally come together. A running car without charging issues, tire issues, or other things being broken. The car felt absolutely STELLAR in the few laps between broken shock mounts. I could definitely feel the ~200 lbs of weight loss. The better ride height from lowering the rear was apparent, having balanced, good tires that were actually found inspired a lot of confidence since the car was shaking violently above 60MPH. The headlight intake and cleaned throttle body, MAF, and free spinning alternator definitely made the car feel a lot peppier. I'm very happy about the car.
To do before Summit:
Install new rear shock mounts (again, but properly)
Flip my shock mount reinforcements
Add bump stops to the rear shocks
AC delete
Pull the last bit of carpet
Swap driver seat and harnesses for the halo seat I just picked up
To do before next season:
Remove sound deadening
Install Spec Exhaust
Install ECU Chip
Sunroof delete
Rear Subframe reinforcement
Sway bar reinforcement
Subframe bushings (AKG Poly)
Diff bushings (AKG Poly)
Engine and Trans Mounts (E46 M3)
Rear control arm ball joints (OEM)
Beyond:
Source M3 Control arms, Spec Shocks, Spec Springs, Spec anit-roll kit, camber plates (This step alone will cost 25% of what I've already spent on the car)
If I come into some money or a better job, see if I can get a cage welded up. May not be feasible, but is very important.
Fire bottle
Kill Switch
Drill ignition lock
Vanos rebuild
Baffled oil pan and safety wired oil pump nut
At that point, I believe this car will be 99% of the way to being spec legal.
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Halfway through my first season with the car! This is getting long, so I'll split it into the next post.