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2018 Infiniti Q50S RWD
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Discussion Starter · #1 ·
Day 1:
Prep work to install the following - AMS/Infiniti heat exchanger, aux tank and expansion tank, Z1 silicone hose kit, Z1 oil cooler, Z1 oil catch can kit, Z1 undershroud, Z1 brake cylinder brace, and Z1 coils.

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I got tired when the sun went down and had to take the dog for a walk 馃槄 Will "probably" finish it all up tomorrow.
 

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Did you source/borrow an airlift tool to bleed the IC coolant?
 

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Murrieta, CA, USA
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That's great Nick. Good luck, have fun, stay safe. Looking forward to your finished pics!
 
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Spartanburg, SC 2016 RS Q50
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What is the purpose of the brake cylinder brace? Didn't know there was an issue that it needed a brace.
 

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What is the purpose of the brake cylinder brace? Didn't know there was an issue that it needed a brace.
Reduce flex of the cylinder during hard braking to improve brake feel.

don鈥檛 forget the during pics!(y)
 
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2018 Infiniti Q50S RWD
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Discussion Starter · #8 ·
Day 2:

Still not finished. There were many expletives from the silicone hose and spilt coolant. For those of you thinking of doing the same thing, some lessons learned:
  1. when you think you're done draining, YOU"RE NOT...keep going from ALL the low points
  2. if you're doing the oil catch can from Z1, install it while the driver's side intercooler is off
  3. before you start putting everything together, make sure you close out or review the ENTIRE procedure BEFORE moving onto the next install (for example, I thought I was done with the driver's side intercooler after I put in the coils; put it back together, only to have to remove it again for the oil catch can install [see step 2])
  4. when they say be careful putting in the AMS/Infiniti heat exchanger THEY MEAN IT; don't want to damage any of the cooling fins on either the HX or the radiator
  5. STAY ORGANIZED
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Looks can be deceiving; we'll see once it's all tuned up.
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HX installed.
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HX removed
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Nissan saw it so fit to have a wiring harness right above the coil pack. Had to do some removal of the surrounding harnesses to get it out.
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Z1 coil packs installed
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Driver's side intercooler removed. Now would have been a good time to start routing the hoses for the oil catch can.
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Oil catch can hose routing.
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So if you're looking to install the Z1 hose kit, be prepared for this hose clamp. It was easy for me to access since the bumper and right headlight were removed.
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Oil catch can installed.
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Here's a portion of the harness I was talking about for the passenger side coil. Wasted too much time removing it.
 

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2018 Infiniti Q50S RWD
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Discussion Starter · #9 ·
Day 2 (continued):
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Figured I would snap a picture of the intercooler with hoses installed. I'm thinking of using better couplings eventually, just to clean up the look.
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I think it's safe to say that you get your money's worth in regards to cooling capacity.

Day 3 will entail finishing up the aux tank install, oil cooler install, and then bleeding the system. I have to buy two more gallons of coolant from Nissan. Total system capacity with the HX, expansion tanks, and aux tanks jumped up to a whopping 2.7gal.
 

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2018 Infiniti Q50S RWD
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Discussion Starter · #10 ·
What is the purpose of the brake cylinder brace? Didn't know there was an issue that it needed a brace.
It's really more for pedal feel, but the only "quantiative" analysis I know of is visual....you can actually see the brake master cylinder flex by several millimeters under pressure. I have one on my G35 that I regularly took to the track and coupled with SS brake lines, takes almost all the slop out of the pedal. Really gives you the ability to modulate brake pressure. But again, that's just me.....

I'll post some pictures of it on day 3.
 

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p.s. - my hands and arms are bloody and sore 馃槄
I bet! I got scratched up just doing fuel and EWG wires! Looking good though!!
 
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Murrieta, CA, USA
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Thanks for the updates! Looking good. I was confused though about the part of needing the intercooler removed to install a catch can?
 

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2018 Infiniti Q50S RWD
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Discussion Starter · #14 ·
Thanks for the updates! Looking good. I was confused though about the part of needing the intercooler removed to install a catch can?
Yes, I know it sounds weird, but it needs to be removed to access the PCV ports to route the feed and return lines.
 

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Yes, I know it sounds weird, but it needs to be removed to access the PCV ports to route the feed and return lines.
Oh. Is this a 3 port OCC?
 

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Yes, I know it sounds weird, but it needs to be removed to access the PCV ports to route the feed and return lines.
I'll admit the Mishimoto OCC is less stealthy, but it certainly takes fewer & simpler steps to install then the Z1 OCC.
 

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2018 Infiniti Q50S RWD
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Discussion Starter · #18 ·
I'll admit the Mishimoto OCC is less stealthy, but it certainly takes fewer & simpler steps to install then the Z1 OCC.
I will take more pictures as I put everything back together. But the Z1 site also has plenty for reference.
 

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2018 Infiniti Q50S RWD
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Discussion Starter · #19 · (Edited)
Day 3:

The saga continues.....

Some good news though. Most of everything is installed and I was able to start her up today. Happy to say that there are no leaks, no CELs, , no overheating condition, no funny noises. I'll let her cool down and let the fluids settle before I recheck levels in the morning. I'm beat.

Things left to do - Z1 undershroud, master cylinder brace, plastic trim pieces, fender liner, and clean-up.

Several test drives to verify operation and levels close to home before venturing out into the real world.

Total coolant used - 3.5gal; total oil 6qts (with room to spare, about halfway between L and H); total blood loss approximately 2 FL oz. These values may change after some initial runs tomorrow. But the air lift worked pretty well so (fingers crossed) I might be good to go.

More lessons learned:
  1. Follow the procedure. Yes, I know a lot of you are engineers, master mechanics, and NASCAR/F1/WRC racers, BUT really, the directions are there for a reason. They may have included stuff that you haven't thought of or may have missed.
  2. The positioning of the oil cooler sandwich plate was a pain and time consuming. Not only are the hoses difficult to work with, you really have to get creative with your spatial ability to make it work. The one fitting choice didn't help either.
  3. Putting on those plastic pieces sucks, but is necessary for airflow. Unfortunately, you won't/can't use all of them again.
  4. STAY ORGANIZED AND CLEAN
  5. The Infiniti/AMS expansion tank is stupid. I'm serious, it's dumb. There's no window (I'm an idiot for not knowing before I installed it). How do you check level? By opening the cap, and sticking a stick inside until you get to the bottom. Then measure two inches from the top. Sure, fine and dandy once you get the level set, but not when you're expecting it to change. I'm just going to eyeball it, I'm not sticking a stick in there (you're not the boss of me AMS)
  6. The Infiniti/AMS auxiliary tank is HUGE
  7. When you think you're done and everything is connected, YOU'RE NOT. Check again. Then take a break for 15-30 minutes. THEN CHECK AGAIN.
  8. When ordering a large amount, do an inventory and separate things out. I seriously thought some parts were missing from the oil cooler. Turns out they were just in a different box.
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Stock oil cooler adaptor is off. Yes, that's a Nismo magnetic drain plug. Yes, it's also useless, but at least it looks nice, you know for all those people who are going to go under the car and look.......

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Stock oil cooler and all pieces-parts.

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There's a bracket you have to remove for the oil cooler hoses. Get your wobble extensions ready.....

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Oil cooler line hose routing. I'm glad I had as much out as I did. Even had to remove the passenger side horn.

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That's how you get the bracket out.....

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Oil cooler installed

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Front crash beam going back on.

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It's a tight fit, but thankfully the people at Z1 made all the brackets with a great amount of adjustability.

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Oil cooler hose routing into the engine bay

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DON'T FORGET TO LUBE UP YOUR O-RINGS
 

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2018 Infiniti Q50S RWD
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Discussion Starter · #20 ·
Day 3 (continued):

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This is how you need to orient the hoses onto the sandwich plate. Get ready for expletives....

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All of this just to torque the sandwich plate stud.

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Another angle of hose orientation

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Just like the instructions!

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Yup, you'll have to cut that plastic thing. It's easy to do with a utility knife.

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All hoses installed and cinched down

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By the time I got to bleeding the system, it was late and my other set of hands (aka my wife) had gone missing. So I had to get creative. Don't judge me.....
 
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