It's Monty from the SR20forum, finally making my way over here.
Here's my 91 240sx that I purchased off a SR20forum member back 3 years ago (98SR20VE if anyone wanted to know). I've slowly been adding parts to the car since the day I purchased it, trying to get the car to what I envisioned years earlier. The car is street legal, but is only used for HPDE/open lapping days, zero to no daily driving due to having time to get away from the family/work life currently.
Here's how the car sit's in the driveway after a wash last month. Currently on jack stands getting a new motor and a few other goodies.
Safety:
Being a father of two young boys and starting to instruct for the local BMWCCA, I decided to invest in safety. Custom 4pt cage, sorry still got to drive it to/from the track, 6pt autopower harnesses, and Sparco Evo L seats with hand built mounts to get the seats to the floor. My next major purchase will be a new helmet and neck protection (hans probably).
Suspension:
Alot has gone into the suspension. With the exception of the front and rear LCA's all the rubber has been replaced with spherical bearings in the suspension. Progress adjustable swaybars front/rear.
Up front I've gone from Koni 8611-RACE inserts in Deviant housings that help gain some inner tire room, GC hardware, ERS 550lb springs, Vorshlag tophats (built in and sealed torrington bearings, and Tein camber plates modified to gain some camber. The hubs and uprights are from an S14 and I'm using 60mm nismo studs.
In the back I switched the rear uprights to the Z32 to save weight and allow me to run a Koni 8610 insert. GC hardware and ERS 400lb springs along with Tein top hats are all being used. The rear hubs are Z32 and also using 60mm nismo studs. No rear parking brake.. weight savings
Brakes:
I decided to go the cost effective route for now... oem. I've run wilwoods on the sentra and from my track experience realized that the dynalite would not be enough for this car. For now I'm using the 300zx calipers on 350z track rotors up front and the 300zx calipers/rotors out back. For track pads, hawk blues (F/R) have been doing wonders with big RA-1 tires and 250whp, as long as they don't see rain. I'm considering a Forged superlite caliper on the 350z track rotor as a upgrade to this setup, the cost of pads is the main reason, another being the current setup has some issues with pad overhang due to the caliper bracket design used to mate these with the 350z track rotors.
The 1" Z32 BMC feels just right, I ran the S13 auto 15/16 BMC for a year, talk about rear tire lockup :eek:
Fronts
Rear
Wheels/Tires:
For track I'm currently running 17x9.5 +38 Enkei NT03-M wheels with 255/40/17 RA-1's. Another deal that I couldn't pass, and it only takes a 5mm spacer to clear the springs up front. I was running 275 RA-1's last year, but am considering the NT-01 for next year, as for size, I'll probably go back to the 275/40/17 again.
Motor:
Under hood shot as of last month. I've always missed the band wagon it seems. This is the S13 SR20DE motor that I turboed. The bonus going this route was that I got to keep the KA wiring harness with very few mods required to make it work with the SR20DE motor. I reused alot of parts from the turboed sentra I ran for years... B13 JWT ECU, MSD 50lb injectors and rail, Z32 MAF, and JWT S3 cams. The first turbo I found, an S14 T28 survived 7 track days before deciding to take a dump on track, which required me getting a tow home. The current T25 that I found in a pinch only cost me $50, but doesn't have much umph on track.
I pulled the SR20DE about a week ago, low compression in #3 and #4 cyclinders and a major thirst for oil the last few months probably means I'm having technical difficulties with my motor. The lower compression of the SR20DET (8.5:1 vs 9.5:1) coupled with running a larger turbo at lower boost should help with the detonation issue I saw last year on the hottest of track days. New rod bearings went in last week and currently waiting on misc gaskets and o-rings from GregV
I've test fit the new setup and it looks like everything will fit. I know the 2876R isn't the most idea turbo, it was one of those deals I couldn't pass on and figure I'll switch to the T3/T04E 50trim that is in my garage over the winter.
Cooling:
Lots of ducting, stock fan shroud and mechanical fan are doing wonders currently. Once I get the power over 300whp, I'm not sure what will need to happen then. Currently for oil, I'm just using the greddy-like oil pan, on the hottest of days I was getting up to 270F, but since getting my water temps down, oil has stayed under 240F. I have an oil cooler that I'll install if I see a need, but for now I'm holding off.