Replacing exhaust system on my 72 240z from the manifold to the back

[Johnny wick]

Nick,

I sent you an e-mail. Please do not forget to send me the video or pics of your installation. How loud is this msa stock exhaust system? can i still listen to the radio with it?

[Nick0227]

Nick,
I sent you an e-mail. Please do not forget to send me the video or pics of your installation. How loud is this msa stock exhaust system? can i still listen to the radio with it?

Okay sounds good I'm getting it out of storage when I get off work today so I can send some more detailed pictures as well.
You will love the sound I promise


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[Johnny wick]

ok!!!

[Nick0227]

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[Eduardo Diaz]

U


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[Johnny wick]

thanks to all of you. I finally took the car the shop and had the MSA Premium Exhaust installed. Nice sound when i speed up and low rumble at idle. I was wondering if i would need to tune up my carbs back again due to the new exhaust which has a diameter of 2.5 " instead of the former 2"? Will i need to set up the mixture in both carbs, idle speed and balance? Or the new MSA exhaust does not affect the actual setup?

Edited April 22, 2017 by jalexquijano

[Mark Maras]

 No need to re-balance the carbs. Idle speed is your choice. The color of your spark plugs will tell you what to do with the mixture screws.

[siteunseen]

Did you get the heat reducing ceramic coated header to?  I hope so, it really cuts the engine bay heat while running and cools down much faster than the bigger cast iron factory manifold.

[Johnny wick]

i just got the MSA PREMIUM EXHAUST 70-72 Stock manifold kit!

http://www.thezstore.com/page/TZS/PROD/15-6302

Any additional recommeded part i should buy to cool the heat and avoid this problem!!

[Nick0227]

i just got the MSA PREMIUM EXHAUST 70-72 Stock manifold kit!
http://www.thezstore.com/page/TZS/PROD/15-6302
Any additional recommeded part i should buy to cool the heat and avoid this problem!!

Same order I placed and didn't need anything else.


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[Johnny wick]

What diameter are those pipes? 2.25 or 2.5? nice rumble!! Do you also have heat soak problems?

[Johnny wick]

On ‎04‎/‎22‎/‎2017 at 5:32 PM, Nick0227 said:

Same order I placed and didn't need anything else.


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Nick,

I already had the msa Premium exhaust kit installed. I did noticed there is some detonation when i let the gas pedal go and more pronounced if i go down a hill. Is this normal?? Both of my 72 round 3 screws SU CARBS are tuned and balanced correctly. If i lean the mixture i will have detonation at the intake. Are the gasket sold by MSA good enough? My original stock system was 2". THis one is 2.5"