Infiniti Q45 Flagship Luxury Sedan, Track/Autox/Drift Build!

[Junya]

Very nice man. VH powaaaaa

[subtledriver]

Test fitting wheels

So my friend was so kind as to allow me to test fit his wheels.

18x9.5 +27 Enkei

they fit perfectly in front, but poked out nearly an inch in the rear.
too small for 275mm race tires.
I will most likely go staggard to cut down on the cost. or go full retard and get 18x11 all around with fender flares. Does anyone know of a flare that fits well on the q45?

basically these current enkei rpf1 wheels im running are going to be for sale soon.

[subtledriver]

Some more pics from Last Sunday!
And an engine bay shot.

[pejsa]

I'm coming out in August. Current z

[subtledriver]

Nicely done sir. Looked like a ton opposite lock lol. Post a picture of your z

Hope I can help you in august

Thanks brotha! What are you doing in August?

You want a pic of my z?

here is the ka24de z that made over 550 tq that I built on a $1,000 budget.






or you want my current z? lol

[subtledriver]

The photos came in! Thanks to LateApexPhoto.com

If you want to see the skyline, click on the recent photos via the link above.

[pejsa]

Nicely done sir. Looked like a ton opposite lock lol. Post a picture of your z

Hope I can help you in august

[subtledriver]

A video of this car in action at autocross last weekend. I'll upload more media soon.



Some notes I took when driving.

Race notes.
Front rotors overheating, two solutions, install rear hawk HP plus pads, build brake cooling ducts, test... Then try early brake master cylinder with more aggressive rear bias.

Center console arm rest gets in the way when steering, removed and had more control.

xcessive seat bracket/bucket improved handling and confidence many times over. No more sliding and holding on to steering wheel to anchor myself.

Hawk HP+ pads bite hard and cause early lockup, do not over-heat early. Higher braking confidence however, need to iron out proportioning and rear effectiveness.

Power steering heatsink worked well. 8 laps back to back (co-driven), only raised level slightly. No longer boiling over and causing loss of power assist/air in lines. Could improve effectiveness with small cooler fan.

Stock limited slip is overheating and lost most effectiveness after a few corner exits. Need to find a solution. Not vital at this moment. Will revisit.

Engine Cooling system works flawless. (Upgraded radiator, and electric 2,500cfm flex-a-lite fan
Relocated fan control probe to lower radiator. Doesn't stay running aimlessly there. Temperature stayed steady and performed perfect in these conditions. Fan cooled motor efficiently and turned off quickly. Dual driver/75-80° ambient temp.

Slight under steer from front. Current -2, Rec go -3 or -4 total degrees. Retest with new tires. Rear camber is good. -1.5

old z32 suspension causing unwanted drift/sway bounce, dampening/valving is too soft for q45.

Felt need for oil temp/pressure, and voltage gauge. Possible AFR gauge.

[subtledriver]

Next Project was to address the same problem we all face at some point with most of the nissans/infiniti's of the 80's-90's, with aggressive driving, the power steering system tends to over-heat to the point of boiling over and leaking all over the exhaust and it will eventually kill the pump, the seals, the hoses and make a mess.

Another thing to think about, Power steering fluid or ATF is more volatile (more flammable) than engine oil. Basically if it gets on hot exhaust manifolds or turbos it can and will catch on fire. Another thing, your performance of the p/s system goes down hill.

I can do about 2-3 laps at autocross or 1-2 laps of drifting before the power steering overheats. especially on a 80-100 degree day.

I opted for a double pass heat sink style cooler. It doesnt require constant flow like a tube and fin cooler. it stores the heat and the "coolness" and works very well in low airflow conditions, like drifting or autocross.
here are some pictures of my setup;;;;;

I decided to mount it in the fender liner in front of the passenger tire. so it wouldnt cause more heat soak in the engine bay.







took an extra qt of full synthetic atf over stock and turned the wheel baclk and forth a few times while adding fluid to the reservoir. then turned on the car and added fluid while turning the wheel lock-to-lock to get all the air out. was bled in a minute or so. if you are having trouble bleeding, you have air leaks in the suction hose or the return hose.

more about the rear brakes, custom radiator, and fan and skid plate, and suspension and other goodies later. if you want to see more, or encourage me, or help me out with parts please let me know.

I need a 300zx stock hand brake assy and front cable, and a good shape oil pan. just send me an email. my email is my screen name and yahoo.com after it. thanks.

[subtledriver]

Thanks you guys! I'll keep posting more stuff as I have time. Be patient and thanks for the support! I appreciate it!

[SnazzyQ]

Jesus this thing is super dooper cool.

Definitely subscribing to this thread.

[jazig.k]

Awesome write ups. Keep up the details

[subtledriver]

Time to upgrade the front wheel studs to ARP. I want a strong fastener to hold my wheels on. This car is really freaking heavy. I opted for the increased thread count, and went for the Forged Steel, rather than some weak aluminum nut. I don't need a wheel to fly off.

Part number is 100-7716 ARP, this is a kit for subaru, but it works perfect for the front of a skyline r32, z32 and my g50 infiniti q45.


Comparison, the original is weaksauce in comparison.


High thread count, almost 3x more holding strength. Dont want anything to fail at high speeds.


Use the old crusty nut to bash the old studs out!


Using the correct tool for the job, this is a thrust bearing stud installer.




All done!!!! I used anti-seize to lube the threads for install.


Old


All done!


Have enough time to flip the tires, too much drifto and tire carnage. we shall see how she holds up this weekend at autocross.


My autocross Camber setup....
jk.

[subtledriver]

I will, hopelfully this weekend I am going to do some shakedown at autocross. test the cooling system.

[pejsa]

Yay post a video of the car in action