Figured I should start a build thread rather than keep updating my intro thread. (http://www.gtrherita...new-time-owner/).
So my build will be at a snail's pace compared to the likes of icarus and 7racer, but that's ok, I need that time to keep doing the slow-but-valuable driver-mod.
The plans for the car are to change small, cheap things that offer the biggest bang for their buck in terms of track times and reliability, all while keeping it looking factory to all but the most expert GT-R owner.
So, initial things before I go out:
- clear bra to protect the paint.
- Harrys lap timer with Bluetooth GPS and OBD so I can start collecting data. I wanna do this up front so I can chart my progress and learnings.
- fire extinguisher (thanks dave@gotboost by way of icarus)
- factory track alignment.
- replace front rotors with RB.
Those are almost done, gotta sort rotors and install the extinguisher.
Hopefully with that setup I can drive as hard as Shawn, and warrant upgrading to a harness. I'll be using the Scroth ASM harness, with a factory-style mount setup. I plan on putting eyelet bolts in the front seat's rear mounts and attaching the lap belts there, while the shoulder belts will go to the rear seat's lower mounts. I'm not sure on the attachments there, but I have a few ideas to minimize the intrusiveness.
Next steps, after wearing out the factory tyres, will be to upgrade to a 10.5 square setup using the rear wheels on the front. A pretty good deal for just 2 rear wheels (inc TPMS) came up yesterday ($700 for both) so I'm going to pick these up tomorrow. They will get shod in the factory rear-sized BFG Rivals or Hankook RS3s and maybe eventually the Nitto NT01s.
Depending on how those tyres respond to the factory front camber (I assume I'll be roasting the outsides), I'll get the whiteline camber bushes, and the top speed front upper control arms, to both tuck the tyres in and improve clearance, and to use the tyre better. Hopefully. If, with the factory alignment it's cooking the inside then it's back to the drawing board.
The reason for both bushes and arms is that they both change the front end geometry, though in different ways. The bushes move the inboard arm mount more inboard, while the top speed arms shorten the swing arm. I will be plotting this in a geometry program to see what it does to the camber curves. Hopefully with the adjustability I can tune out any nastiness.
If the rears show they're getting cooked on the insides too them some rear camber adjustment will be needed there too I guess.
With that setup I imagine I will need a HKS transmission cooler, and possibly also a AMS engine oil cooler, but we'll see.
Up next would be a set of adjustable sway bars all round.
I'm not sure what the next steps after that would be, maybe just more driving practise. Or lightness mods?
I will be taking pics as I go along (very slowly), and here is one as she sits now, factory.
Hope to see you guys soon at a track day!
Edited by thehelix112, 17 January 2015 - 06:29 PM.