SPL Rear Sub-Frame Bushings

ZontheRocks

Another great write up! Awesome that you have these all linked on your main build page too! These SPL write ups will live on and be used by many enthusiasts!

k67p67

What are the spacers for?

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Rusty

You can change the location of the sub-frame on the body to change how the Z handles. The spacers keep the sub-frame in it's stock location. Remove the spacers. you change the roll center, CG, and anti-squat.

Here's a link to the install and handling changes.

http://www.splparts.com/content/SPL%20SSB%20Z34.pdf

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k67p67

Interesting. Thanks.

Great write-up!

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SOLD2017 370Z Nismo Tech 6MT PART OUT IN PROGRESS
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Rusty

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milmast

Nice write up!

How do you like them? Too aggressive? Perfect? I'm looking to change out my rubber ones but am stuck between:
1. Installing Z1 aluminum inserts into the OEM bushes
2. Installing poly bushings
3. Installing aluminum bushings

My Z is not my daily, and I have no problem with stiff, but how are the rattles? I'd say my Z is track focused, but it is mostly driven on the street. What are your thoughts? TIA

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Rusty

Thanks.

Handling wise. The car is planted. Every pivot in my suspension is SPL. There is zero rubbing anywhere.
I get some gear whine from the diff. It's just enough to hear it. Couldn't hear any when I just had the SPL solid diff bushings. I don't hear any new rattles. I can hardly hear the radio. I have FI LTH's, 12" resonators, and FI cans.

If you don't want to drop the sub-frame. The Z1 inserts are the way to go. You most likely get the same feeling with the Z1 inserts and the poly bushings. The poly bushings. If you go through the trouble of dropping the sub-frame. Go with the SPL's. My experience with installing poly diff bushing vs the SPL diff bushing. The SPL's was easier to install. I imagine it's the same with the sub-frame bushings.

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"The Difficult Anytime, The Impossible By Appointment Only"
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