What did you do with your Z today V (ON TOPIC DISCUSSION ONLY)

Originally Posted by TheFLiP

So, what did I do? It's definitely a saga that took the span of two months. Here's the Cliffs notes version.

Took it to the shop to get the following installed:
Z1 anti fuel starvation kit, KW V3 plus supporting SPL links, SOHO Motorsports A2A with the Stillen Supercharger kit with crash bar, Z1 34 row oil cooler. ~460 whp on the Dyno.

Car lasted about 500 miles before the engine blew. Later learned catastrophic failure of the high flow cats.

Towed back to the shop ~250 miles away. Ordered new engine from a '17 Nismo with 17.5k miles. Added Motordyne headers and test pipes. Dyno showed 499 rwhp in Albuquerque's 5,300 ft elevation. Car's running way better. Added a crackle and pop tune to one (out of 5) of the maps. Car runs strong. Runs hot at 220°F and climbs quickly during spirited driving.

Added Z1 2-piece rotors, steel braided brake lines, and new yellow stuff EBC pads, front and rear Hotchkis sway bars, and the 15+ Nismo front and rear bumper.

Took her to the track. 89°F max temp for the day. Found out that I can't do more than three laps without the car dangerously overheating. Thought I had coolant leak. Nope. Cooling just can't keep up and fluids boiled over. Almost burnt my hand when I checked the coolant level when I thought it had cooled enough. I was wrong but thankfully it had cooled down but just not enough. Max oil temp I saw was 290°F. Max coolant temp was one dot from max. This was when I didn't check temps and was chasing a lap time. This was after two laps from ~200°F oil temp on the gauge. Oops. Engine life has definitely gone down quite a bit. I'm surprised the engine didn't blow.

Topped off on coolant and drove home. Had a friend follow me just in case. Car worked fine on highway speeds. Just can't handle the track.

Today, I took apart the car's front end and bottom undershroud to clean all the coolant that went everywhere. Drained the oil from the engine, lines, and oil cooler. I also installed the front wheel well liners today. Went to the track without it.

Tomorrow, I put her back together, and try a test drive. We'll see what we get. The next project is to address the cooling issue with a new radiator, additional side mounted oil coolers, different fan blades and hood vents. Someday. I have to lick my financial wounds from the unexpected engine swap.

Any tips would be appreciated.Attachment 142688

Sent from my SM-G975U using Tapatalk