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Showing results for tags 'turbo 240z'.
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Hi all, I've finally decided to crawl out of my cave and surface my build here. I felt like I was taking more from this forum than I was giving. My build used a TON of info that I was able to unearth via this site. My hope is that my build adds to the plethora of information on here and helps others as much as it has helped me. Anyhow, I've been trying my best with the limited network/connections I have to get suggestions on where I should start with jetting for my turbo surge tank set up. I feel like I hit a dead end. I know that I have to fine tune the jetting for MY set up...so I'm currently in the process of installing a wide band O2 sensor and a boost gauge. However, does anyone here with experience have a ballpark estimate on jet sizes in an application like this? I don't want to start tuning my engine and have it catastrophically fail or damage my newly rebuilt motor because my jets are way out of line. Here is my set up: Engine: L28 N42 Block E88 Head (Debating on whether or not to install my spare P79 head in) 280zx Turbo dished pistons .020" oversize 1mm headgasket Stock L28 rods 280zxt stock exhaust manifold Custom 2.5" to 3" turbo back exhaust T3 Turbo w/internal wastegate: Compressor: Trim:55 Inducer Diameter:50.5 mm Exducer Diameter:76 mm A/R:0.5 Turbine Trim:73 Inducer Diameter:65.5 mm Exducer Diameter:55.9 mm A/R:0.63 Triple Mikuni 40PHH Carbs Main Jet: 145 Main Air Jet: 200 Pilot Jet: 60 Pump Nozzle: 0.45 I was able to find one member on here who ran a similar set up with a bone stock N42 block/internals 20+ years ago. He ran a 145 main jet. However, I was not able to find out what size his air correctors were. Any suggestions on baseline jet settings for a set up like this? Or am I just on my own with my O2 sensor analysis? I have included pictures for you! Please excuse the mess, it's still under construction. Thanks in advance!
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Went back to track last night. Entered in the Stock block competition. Jerry replaced the cv axles and put it back the way it was with the slicks. Made a shakdown pass and engine was poping on the other end. Pulled some plugs, checked fueil pressure etc. Did not data log that pass, Went to make another pass and was stopped and backed up from the bunout box, leaking fluid. Later found out a fuel line feeding the passenger side fuel rail had development a hole and was pushing out fuel. Replaced fuel line. Did not have time for another pass before competition. Won our 1st round, off our et by 3 to 4 10ths. Cooled it down and getting ready for our second round drew cards abd we had to get the card matched up against a camero bid turbo, big tire car running alky. I think he was the fasted of the cars. Well Jerry cut another good light but had to let out of it at the end, engine breakign up poping. Probably some bad plugs on the passenger side due to being lean from fuel line problem. Hats off to my brother for excelent driving and almost perfect R/T he was cutting down tree on the pro tree. Below is the video on youtube. http://youtu.be/5Ifl0ukt1Ko John
