Upgrading my Engine, Transmission & Rear Subframe Mounts To Polyurethane & Billet Aluminum

After throwing a tune on the Z, I was somewhat disappointed as I was expecting the ‘throttle response’ to the fixed, and it wasn’t. After driving my car and pushing it more, I was able to determine which areas of the drivetrain needed upgrading.

The stock mounts on my Nissan along with 95% of production cars, are rather insufficient when you push them beyond their intended design. It doesn’t matter if we’re talking my comfortable FWD Accord, or even my sporty RWD 370Z, the bushings are wayyyy too soft if you want to have a good connection with the car.

Just like the previous video about the Coolerworx shifter, this upgrade will give you a better feel for your car, and will be beneficial for both on and off track use. I hope you enjoy!

Feel free to take a look at the tools and products I’ve outlined in this video. By purchasing items below, it helps my channel operate and brings more awesome content your ways. Thank you all for your generous support!! 💙

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FEATURED PRODUCTS

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///// TORQUE SPECIFICATIONS \\\\\
Description [Head size] (Quantity) - Torque Spec

Engine Mount Lower Nut [17mm] (2) - 68 ft-lb
Engine Mount Upper Nut [14mm] (2) - 36 ft-lb
Transmission Mount to Transmission [14mm] (2) - 36 ft-lb
Transmission Cross Member to Transmission Mount [14mm] (2) - 36 ft-lb
Transmission Cross Member to Body [14mm] (4) - 36 ft-lb
Rear Subframe Nuts [19mm] (4) - 81 ft-lb
Rear Subframe Brace Bolts [14mm] (12) - 24 ft-lb

I truly hope you guys enjoyed this video! If you have, help me out by liking the video and stay staying up to date with my ▼

Video Chapters
(0:00) Introduction
(0:57) Overview
(2:24) Engine Mounts Removal
(5:00) Engine Mounts Installation
(6:51) Transmission Mount Removal
(8:45) Transmission Mount Installation
(10:21) Rear Subframe Collar Prep
(14:23) Rear Subframe Collar Installation
(16:13) 2-Week Review & Notes

[daeshawnr]

The shine of that exhaust and undercarriage is awe inspiring😍. Rust truly is the devil😂

[G]

I love how you're approaching this car, Milan. A billet or stupidly stiff polyurethane set of mounts might be ideal for pure track and race use, but racecars are beaten hard without much regard for long term longevity and livability during normal street use. These mounts significantly improve overall handling and safety of the car without compromising chassis longevity and comfort since they still absorb the vast majority of the metal fatigue inducing high frequency vibrations but are actually stiff enough to hold things where they should be on low frequency motion inputs such cornering, accelerating/braking.

[roninmantis]

As always, you make the best videos. You cover each section to the project and have time markers to find it easily. Well Done!

[staypositive]

Wow! This is amazing! I have no intention of this doing right now but loved it! Very professional and clear presentation! Thanks!

[joedapro]

Good video. I did the same thing, adding stiffer bushings and mounts. Different car same concept. Everything you've said is true, this is the way it should have come from the factory.

[JBaek]

I don't have a Z but do I wish you owned all the cars I have so I can follow your DIY steps. You're very good presenter and instructions are top notch! My S2000 engine, trans, and diff mounts helped as well and subframe collars, but being that it's a low torque car... you don't "feel it" as much I think

[dennissvistun]

Going to SOHO motorsports this week to get my Z1 diff bushings and my CMAK external slave cylinder installed. These look like good future mods as well. Good luck on your build.

[TheCamaro]

Have the same mounts. Plus the poly diff bushings on my G37 6MT that is similarly tuned (UpRev) and you are absolutely correct. Huge improvement without much cost and little to no downside.

[ahmaddabdoub]

Dude every time I watch your 370z videos I literally go to Z1’s website and buy more parts. In today’s case just waiting for Black Friday to order upper and lower intake manifolds, and now I’ll be buying these mounts for my 6MT G37 sedan. Z1 should def sponsor you.

I also live 45 minutes away from Z1 meaning I can have these parts the same day which doesn’t help.

[chachakeepithunnit]

Keep it up 👍🏻 love your videos so detailed and informative!

[amdstrollo]

Man your videos are like chrisfix quality, how tf do you not have more views?

[BoSenpai]

Getting these on Black Friday this year for my Z!

[PeroGrande]

Just did the subframe collars today. Thanks for posting this video to reference.

[doriansantiago]

Your car is so clean !! 😍😍
Nice video but looking forward to Mini ones 😝

[bchnts]

Great mods and I believe that they don’t have any downsides

[sherlonio]

This is my dream Z, all about handling full SPL inside there!

[fernandohood]

All the other videos where time lapsed when it came to the rear subframe. A++++

[dirtyfunk]

The transmission mount was super easy to install only took 20 minutes and surely feels like it puts down more to the wheels. But do realize the car will have more sound and vibration

[Jondakilla]

Honestly can’t wait for the diff video. I did my own Diff and mounts, I went with the Tomei LSD and the lock up is great but sometimes the clicking can get really annoying. Probably something wrong I did, but from the looks of the forums it’s normal. I will probably change it out eventually to a helical LSD and go away from Clutch lsd.

The fluid definitely makes a difference. If you do end up going with tomeis 1.5 LSD, instead of shelling out $50 for their fluid, I’ve used an equivalent GL-5 80W-90 fluid like valvoline and mixed it with a bottle of friction modifier and it works perfectly fine and doesn’t click as much. I tried to give redline a chance but it doesn’t work quite as well.

I also have the same color but a 2014 Base 6MT. Currently pushing 340 whp and 272 wtq. Tuned with Tomei and Z1 cold air intakes. I love the progress of your car and it’s perfect since I get to see what wheels would look good on my car while you do all the work haha. Awesome videos and keep it up!

[DeifVideos]

nice! i have poly mounts on my evo 2, both engine and the whole suspension, with balance shaft delete and damn my whole body gets massage every time i drive. it is not a daily by any means