How To Install A Cat Back System Exhaust On 300zx Z32
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This Post Has Been Viewed 683 Times Since Wed Aug 22, 2007 12:18 pm Posted By
zcar with 21 replies
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| How To Install A Cat Back System Exhaust On 300zx Z32 |
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im starting this post to show how i installed a cat-back system for my 96 nissan 300zx non-turbo.
the first step is to buy a good quality exhaust sytem, i thing megan racing has the best.
i've included a pictures of the schematic that i got from the manual.
once you get your exhaust delivered, its time to get your hands dirt.
1. remove old exhaust
ok i removed the exhuast and now trying to install it, but i am having one problem, the holes don't align with the flanges.
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Comments and replies About How To Install A Cat Back System Exhaust On 300zx Z32
:: 1 :: #16995 - Reply By zcar On Wed Aug 22, 2007 12:30 pm
this is the problem i am having, the holes on the catalytic converter do not match with the holes on the resonator. on the left is the old and on the right is the new megan stainless steel
:: 2 :: #16996 - Reply By zcar On Wed Aug 22, 2007 12:40 pm
here again, you can see a close up, on the left is the original and on the right the megan. as you can see, i colored the flanges yellow to show the angle is way off from the original and so it will never fit. i don't know what im going to do know since i bought it through the mail.
:: 3 :: #17007 - Reply By zcar On Wed Aug 22, 2007 1:21 pm
here are some more pictures
here the top is the catalytic converter
nope, i couldn't get it to fit
that exhaust pipes do look cool though!!!
:: 4 :: #17029 - Reply By mario On Wed Aug 22, 2007 3:52 pm
looks nice, let me know how you figure it out. i want to put one just like that on my z.
:: 5 :: #17936 - Reply By edwino85 On Wed Aug 29, 2007 12:48 pm
ok, i finally found a way to do this. since the holes didn't align, i will have to drill and tap my own. im not getting anywhere with the guys i bought this from. so on this pic, the first step is to drill a whole, im using a 11/16 drill bit. first make sure you measure to align both exhast flanges.
:: 6 :: #17937 - Reply By edwino85 On Wed Aug 29, 2007 12:50 pm
i went to the hardware store and bought a tapping kit (metric) to tap a 10mm x 1.25 tap
:: 7 :: #17938 - Reply By edwino85 On Wed Aug 29, 2007 12:51 pm
now tap the whole so that it will take a 10mm x 1.125 metric thread.
:: 8 :: #17941 - Reply By edwino85 On Wed Aug 29, 2007 12:57 pm
here, drill and tapped all four holes where the new resinator is going to be at. the green arrows show the original wholes, and the red circles show the new holes i made.
:: 9 :: #17942 - Reply By edwino85 On Wed Aug 29, 2007 12:58 pm
now insert the two studs into the new threads.
:: 10 :: #17943 - Reply By edwino85 On Wed Aug 29, 2007 1:00 pm
now, the kit came with two gaskets, im going to use these two for now.
:: 11 :: #17945 - Reply By edwino85 On Wed Aug 29, 2007 1:01 pm
so this is how it should look like when you align the gaskets to the catalytic converter side
:: 12 :: #17946 - Reply By edwino85 On Wed Aug 29, 2007 1:05 pm
finally, i was able to get everything to fit correctly, took a lot of work to do, the hardest part for me was tapping the holes, i think if you don't want to bother with making the taps yourself, you can take it to a machine shop so they can do it for you, prob cost you like $100 bucks, but you don't have to deal with it. im so glad i was able to fix this. man, that would have been $550 bucks down the drain. those dudes a meagan suck, i mean, they have good products, but their support sucks, but i don't its only them, everyone no-a-days, its the same, service sucks. its rare to find a good place with good service. its all about the money, they don't have enough staff to meet the deman i guess. what do i know?
:: 13 :: #19551 - Reply By zcar On Sun Sep 09, 2007 4:21 pm
ok, now i got all the parts together fitting correctly, i went to the nissan dealership and got an exhaust gasket kit for $80 dollars. make sure to use new gaskets whenever you are putting new parts.
:: 14 :: #19553 - Reply By zcar On Sun Sep 09, 2007 4:23 pm
the front gastkets are actually rings, so to get the old rings out, i used some lubricant like wd-40 and a sharp pick to get it out.
:: 15 :: #19554 - Reply By zcar On Sun Sep 09, 2007 4:25 pm
now place the new gasket ring to get the whole exhaust ready for installation
:: 16 :: #19557 - Reply By zcar On Sun Sep 09, 2007 4:29 pm
i used a cart with wheels to roll the exhaust underneath the car because its just to heavy, plus it makes it easy to install.
:: 17 :: #19558 - Reply By zcar On Sun Sep 09, 2007 4:32 pm
try to align the three hole in the headers, putting these bolts will make it easier as you install each bold holding the exhaust system as you make your way toward the end fasterners.
:: 18 :: #19559 - Reply By zcar On Sun Sep 09, 2007 4:34 pm
now with the factory jack that came with the car and a piece of wood, you can raise the two front pipes to help you raise up the exhaust system.
:: 19 :: #19560 - Reply By zcar On Sun Sep 09, 2007 4:37 pm
as you raise the exhaust sytem, be sure to keep an eye on the 02 sensors not to damage them.
:: 20 :: #19562 - Reply By zcar On Sun Sep 09, 2007 4:40 pm
after you have installed the resinator and catalytic coverter system, you its time to install the two exhaust mufflers. make sure to align the pipes correctly and that everything is tight.
this is one of the best upgraded i did to my z, im very happy it worked out. if you are going to buy a cat back system, make sure when you buy you make sure that you tell the exact model to the vendor. sometimes there are mistakes, for example, in my case, i think, they gave me a turbo cat back, but my cat is non-turbo (na) so make sure and check with them.
:: 21 :: #51119 - Reply By Joe McAllister On Mon Apr 21, 2008 7:43 pm
how loud is the megan exhaust inside the car compare to the oem exhaust? i am looking for an exhaust that is a little louder that has the oem look.
