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


jalexquijano

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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"

I would notice when the car was cool I would get some pooping but once it warmed up all was well.
I would stand behind the gasket provided by MSA


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So these gaskets are really of good quality? The popping is only on deceleration and becomes more accentuated when the car goes down a hill with the foot off the accelerator.

Personally I would probably find a better brand because if I'm not mistaken MSA sends a cheap cardboard type gasket.
I haven't had any leaks but maybe look for a better brand gasket for 2.5 inch exhaust and you'll probably be better off in the long run if it's a daily driver.


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Odds are you have blown out a section of your gasket. Dave Rebello and I were just discussing this. He recommends a for exhaust red/orange high temp etc in replacement of the gasket. I did ask him about a copper racing gasket and he has not tested them. They are about $50


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19 hours ago, Nick0227 said:


Personally I would probably find a better brand because if I'm not mistaken MSA sends a cheap cardboard type gasket.
I haven't had any leaks but maybe look for a better brand gasket for 2.5 inch exhaust and you'll probably be better off in the long run if it's a daily driver.


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Where do i get these high quality 2.5 diameter gasket?

Edited by jalexquijano
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