Preface: This is a long post, if you don't want to read it then don't complain simply move on.
These are always kind of fun, figured I would start by posting up my 2009 experiences with my RB'd S-chassis. Other people should join in, it's always interesting to see what new things people learn and where they are taking their project(s) next.
So I think 2009 for me could be summarized by 2 concepts. Chassis work, and road racing.
I started out the year bringing my car to a buddies place to get a 6 point cage put in. I wish I had some good pics of it however I can't find them. Overall I was VERY pleased with the work and the cage is really tucked up against the car and you can hardly even see the cage from outside the car. My wife even asked me one day when I was getting my "cage thingy put in [my] race car?". She never even noticed it and she had been parking right next to it in the garage for over a month. So good fitment, definitely feel a lot safer with it in (also have 4/5 point belts in), and it noticeably stiffened up the chassis.
After the cage I continued my chassis work by spending WAY too much on paint. I had gotten a bonus from 2008 and figured I would put it towards a paint job... and just as many paint jobs go it started out small and ended up costing more than a clean kouki S14 roller chassis would go for. The car got the glass removed, all the panels removed, and brought down to metal. It then got some crazy weird RX7 copper mica paint put on. I actually wouldn't have picked it myself but the previous owner did a crappy job of putting it on and the engine bay already had that color so I figured I would try to keep the job a little simpler by picking the same color. In any case primer, base, and like 6 layers of clear later the car actually does look really good. Problem is, I have never really had a car with really nice paint before so now I am a little scared to drive the thing and park it, always afraid of getting it dinged up. Moral of the story, just as my paint guy said: "Always remember your paint will never look as good as the day it is finished."
Here is a pic from when the car was finished including a set of new slicks/knockoff prostars I bought for it for when I go to the drag strip:
From there I did some fuel related work. Last year I noticed I was simply tapped for fuel running when running E85. Anything over about 20psi and I just didn't have anything left. I knew I was out of injector,but what was even more interesting was that I did some debugging and found out one of my walbro 255s had literally completely given up the ghost. Good thing I have a fuel pressure gauge and could quickly figure it out, but still dual pumps kind of suck for that reason because they mask the problem of one getting weak or going out. Walbros are also not well known for reliability. So while I would love to really revamp the fuel delivery I simply replaced them with 2 new pumps while I was in there and will try to keep the fuel level above a half tank as much as possible. Also replaced my 750s with some delphi 1000s. The 1000s are fair. They definitely have significant dead time and I have it tuned reasonably well but I still feel like a faster injector or a low-z driver would really benefit me at some point. The new pumps and 1000s have given me the fuel headway I need. I am really only looking to probably run a little over 600whp max (on E85) so the fuel system should be up to the task.
After fixing the fueling, I made my one and only trip to the drag strip for our local tracks "Real Street Drags"night. Essentially it is a clocks off, race people for fun or for money just like you can do on the streets. It took some getting used to to launch the car on slicks, but I eventually got the tune dialed in and the balls to just stay in it and ran my best run as the last run of the night against a kind of sleeper auto LSx vet. We both really underestimated what each other had done. I think he ran like a mid 11 in what looked like your grampa's auto vet. I ended up clicking off my best time of a 10.75 @ 132.6. A buddy of mine took a vid, corvette tried to tree me and ended up going red and I still ran him down
http://www.youtube.com/watch?v=z4Ep9kJtWOo
So after that I geared up for my first road racing experience. I'll be honest prior to this I always talked about trying it but never actually did it. This year I had a buddy talk me into the WMHM (wmhm.org) event and I will say it was the best money I have ever spent on a car event. It was like $250 or so for 2 DAYS of racing. I think it was a total of like 8 or 10 20 minute sessions. To prep for it I primarily just did reliability and brake mods. I ended up just buying the wilwood big brake kit, with BP-2 street/strip pads, SS front lines, hawk HP+ rear pads (already have Z32 rears) and high temp wilwood fluid. I also knocked down my tune a bit to make it more reliable and more manageable... there is just no need for a 600+ hp car on a small road coarse with a beginner driver.
In the end I didn't even race in every event because I was tired and wanted to give the car a rest. I will say though I learned a lot about driving and a lot about the downfalls in my car and it's setup. First I will start with the driver. I actually improved a lot and was bumped up a class, but I still need to clean up my lines a bit and also need to improve my braking (I am real conservative) as well as learn to heel-toe! The car also had it's share of issues. 1) It needed an oil cooler. THAT IS A MUST for anyone planning to track their car. 2) The VLSDs are okay when they are new and work okay, but my R33 GTST diff was just tired, and I was a one wheel wonder out there and it SUCKED. 3) My turbo (GT4067) is WAY too big. Too much lag and have to beat the PISS out of the car to get it to do what you want. I would have been much better off with something smaller. In any case here is a vid, I apologize for the poor old digital camera quality but it is worth the view just for the end when I have my first experience spinning off track!
http://s52.photobucket.com/alb...e.flv
So after my track day I spent some time/money fixing what I found. First up was the oil cooler! I ended up making a custom kit based with the greddy sandwich adapter (w/thermostat), custom -10 lines, and a nice large oil cooler from summit. I also put on a small cooler for my power steering as well.Next I had to address my differential. This one was a process! So the good thing about the differential I had in my car is that it included the stronger 5x1 skyline axles which as I had previously proven were strong enough to hold up to abuse at the drag strip with lots of power and slicks. So I needed to keep a setup with strong axles, but I also need a differential with a working LSD. In the end I narrowed it down to a few options:1) Keep my existing housing and axles and swap in a nice carbon diff. Like the carbonetic 1.5 way. Problem is this was a lot of money and I couldn't find ANYONE who stocked it for the japan only R33 GTST setup.2) Go with an S15 differential and output shafts. Then I would need to switch back to 3x2style axles and because the stock 3x2 240 axles are known to be weak I would have to buy upgraded axles3) Go with a Q45 setup and deal with another VLSD and much lower gear ratio, but end up with very strong factory Z32 TT axles.
In the end I chose route 2. I did it in part because the S15 HLSD is such a good differential on a road course, and low maintenance. I mated the S15 differential with new level 2.9 axles from DSS, which they claim I think should be good to like 600whp. The Q45 in the end still would have been a VLSD and it would have given me a lower FD than I truly wanted... and the carbonetic route was just as pricey as the S15+axles route and I couldn't get any guarantee that the part I was going to buy would actually fit.
Here is a pic of me swapping the internals and ring gear over from the existing VLSD to the new S15 diff and new output shafts. Also a pic of the DSS level 2.9 axles.
I then took the car for a really late season HPDE at road america here in WI. I will say Road America is an AMAZING track, it really sucked that the day was so bad and it was cold and even raining so I hardly got to even push the car. But at the same time I was happy my car was in one piece, that day there were TONS of mishaps. S2000 hit the wall at T8, C4 Corvette started on fire in the paddock, 08 Mustang GT (with my first instructor ironically enough) went into the wall IIRC at T9, and then a Porsche 911T went into the wall at the kink! After the Porsche went they just decided to cancel everything for the day, which was probably a good idea. So I didn't get to experience too much of the track but I did get my cool signature picture out of it. Great shot of my car going into (IIRC) T5 at road america:
So what are my plans for '10?
Well first I want to finish the sound deadening on my car and clean it up my putting some automotive carpetting back there. It should really help the car be quieter and feel more finished as a daily driver / weekend warrior.
Beyond that I probably shouldn't even be writing this but I have kicked around the idea of just selling it and saving a bit and getting back into a car note for something a little slower, maybe a little more simple/reliable, and livable. Something like a C6Z or maybe a newer Z51 with some light mods. The C6 grand sport also looks really nice, but I would have to wait a year or 2 to pick up a used one.
However if I do keep the car (which I more than likely will since it will be the cheapest way to go fast) i'll get it a new set of tires for the road coarse. The current Nitto 555s and 555rs just aren't cutting it in the twisties. I think I have my mind set on the new Dunlop StarSpec Z1s. I am also pretty sure I will be swapping my turbo to something a little smaller, the new ball bearing PTE 6262 is really catching my eye. I'd bet I could get the thing to spool right around 4000 (1000+ rpm sooner than now), without giving up hardly any power. And if I do want to keep the same peak power I can always add another pound of boost or 2 anyways. I am hardly pushing it now with only 24-25 psi on E85, and that's on high boost. I usually cruise the streets on 20-21 psi and the road coarse on 17psi + less timing.
So that's the end of my essay. Anyone else care to join in? Give us a recap of what you accomplished in '09, maybe some lessons learned, or where you plan to go in 2010.