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Old 06-14-2006, 08:53 AM   #1
01_Celica_GT
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'91 300ZX exhaust diameter?

does anyone know the stock exhaust diameter for a '91 300ZX non-turbo? I am looking for 2 high flow cat's and I need to know the exhaust diameter.
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Old 06-14-2006, 10:28 AM   #2
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Re: '91 300ZX exhaust diameter?

Quote:
Originally Posted by 01_Celica_GT
does anyone know the stock exhaust diameter for a '91 300ZX non-turbo? I am looking for 2 high flow cat's and I need to know the exhaust diameter.
stock exhaust? hmm...id say 2"-2 1/4" but i am not sure.
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Old 06-14-2006, 02:40 PM   #3
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Re: '91 300ZX exhaust diameter?

I believe its 2". Most after market companies increase the size to 2.25" and 2.5" Honestly you dont need much more than that on a Z because its still just two 1.5L Inline three cylinders.
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Old 06-14-2006, 05:14 PM   #4
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Re: '91 300ZX exhaust diameter?

Well I dont wanna put a lot on it I just want 2 high flow cat's so they come in 2" 2.25" and 2.5". Does anyone know where I could find out how big it is? I dont wanna buy them and them not fit.
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Old 06-14-2006, 06:55 PM   #5
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Re: '91 300ZX exhaust diameter?

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Old 06-15-2006, 12:11 AM   #6
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Re: '91 300ZX exhaust diameter?

pfft go with 3" straight pipe
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