Nismo exhaust install possibly went wrong. Fitment issues from NismotoBase?

LiquidCrewZ

So I bought a low mile used Nismo exhaust from a forum member on here and nothing seems to be modified from factory. Awesome exhaust for the money IMOP. Seems to wake the car up a little. Or it could just be wishful thinking. So I paid a local shop around Columbus to swap my stock exhaust for the Nismo one that I purchased.

Everything seemed great until after a week or so, then I started to notice that one of the sides of the exhaust seems to stick out a 1/2 inch more then the other side of the exhaust. After I had the exhaust installed, one of the shop managers said everything mounted up perfect except one side, but it shouldn't effect anything.

I took a few pictures but is this normal for the factory Nismo exhaust to not perfectly fit on the base model cars? I didn't read anything about the Nismo exhaust tips extending more then one another.

Maybe I'm making to big of a deal out of things but I would like the exhaust to fit as close to factory as possible and it's starting to bug the **** out of me. I did notice (pictures below) on the driver side exhaust section, one of the exhaust peg bracket is just hanging not connected to anything. What do you think?

MarkGideon

Order this exhaust "insulator" from Amazon.

Walker Exhaust 35259 Hardware-Insulator : Amazon.com : Automotive

Install it where the Nismo muffler hanger is just hanging. That should fix it. I installed a used Nismo exhaust on my base a few weeks ago. Knew about the difference ahead of time so I had this ready. Used the metal insert and bolt from the base insulator, so if the shop trashed it, you will need to source those. Since this one is about twice as long as the shorter one from the base muffler, it worked out perfect.

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2012 370Z Base Gun Metallic--2015 Altima 2.5SV Gun Metallic--2020 Chevy Silverado RST--1965 Chevy C10 Stepside Shortbed

LiquidCrewZ

So I finally got around to ordering that insulator and did notice their was no place to hang the insulator. I did see my old exhaust still had the factory rubber connector but I didn't see any removable bolts. It has a place to insert a specific bolt in the hole but I'm not sure which one. I guess I could use one of the bolt nuts from the factory exhaust and put up one from the hardware store. Any suggestions on what bolt? Just screw the bolt on or press on?

Also does anyone else have rust looking spots on the inside of the exhaust, is that normal?

tjlazer

I think it's normal for it to stick out a little on one side, mine does that too. I have a 2009.

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2009 370Z Monterey Blue,Nismo Conversion,RE-11's, K&N Typhoon intakes,Blue Kickplates,Homelink,FI 18" CBE,ERZ HFCs,Hotchkis sways, Swift Spec-R, EVO-R Highwing, UPREV

jbsonit4u2

Did the same fix on my
ZR, that will do it.

LiquidCrewZ

I had no idea or I would have had that ready to go. I'll have to look at the old exhaust to try and find the old fittings your referring to. I'm pretty sure the shop left them on. Thanks for the info.

Sh0velMan

I didn't have any fitment issues as far as the tips were concerned. They fit perfect.

Two of the hanger mounting points were not usable, the product linked above would make at least one of those usable again. Not sure on the passenger side one though.

Either way, I ran without the two forward mounts (Muffler has 4 total, two front, two rear, the front ones didn't fit on mine) the entire time I had the system and never saw any signs of stress or otherwise.

That tip fitment is concerning though. Mine definitely didn't look like that.

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MarkGideon

Interesting. The Nismo muffler I installed only had three hangers--the two on either side toward the rear of the car, and one on the front driver's side. The two rear were the same as the base stock exhaust so no modifications were necessary. The front driver's side muffler hanger was the only different mounting point between the base exhaust and the Nismo exhaust.

There are a few other posts about the different driver's side muffler mount. Seems there is a metal plate that mounts onto the Nismo frame to drop the mounting point for the bolt through the insulator. Seems I read somewhere here that the cost of said adapter plate was prohibitively expensive, thus my use of a $7 chunk of rubber.

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2012 370Z Base Gun Metallic--2015 Altima 2.5SV Gun Metallic--2020 Chevy Silverado RST--1965 Chevy C10 Stepside Shortbed

Sh0velMan

Yeah, your method is plenty good enough if you just "have" to have it there haha.

Might be it just had the one, I thought it had another on the other side too, bad memory I guess.

I ran both with a hanger and without at that position and the exhaust didn't fit any different without it. I feel very comfortable with just telling people to leave it off, it really isn't needed.

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7speed

Yup no issues here

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09 370z 6spd traded 1/12/15 for 15 Challenger RT 6spd

Mr_Cann

hmm I just got my nismo exhaust today and the guy at the body shop told me that it should be fine without it cause it was still pretty sturdy without it...wondering if I should do something about it or just leave it as is

7speed

Fine as is. Nismo exhaust on my base for 7 months .... No issues.

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09 370z 6spd traded 1/12/15 for 15 Challenger RT 6spd

Mr_Cann

Sweet thanks for the heads up!!

tower74

I threw on the Nismo exhaust on my old Z and had zero issues. It fit like it was stock.

MarkGideon

I used the same bolt and sleeve from my stock base exhaust n the new insulator, installed in the original bolt hole.

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2012 370Z Base Gun Metallic--2015 Altima 2.5SV Gun Metallic--2020 Chevy Silverado RST--1965 Chevy C10 Stepside Shortbed