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Original downpipe diameter


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#1 zed1

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Posted 23 September 2017 - 03:07 PM

I want to confirm that I have a original downpipe sizing, my 1966 520 (J13 engine) measures 1.75 inches in diameter.  Can anyone confirm that the diameter on their 520 is also 1.75"

 

Thanks,

Keith


1969 Patrol L60
1965 Patrol L60 (parts provider)
1966 PL520
1970 240Z
1990 300ZX (sold 10/13)


#2 datzenmike

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Posted 23 September 2017 - 03:15 PM

 My 620's L20B was 2". No matter it obviously works just fine.


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#3 datsunrides

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Posted 23 September 2017 - 04:10 PM

1.5" on mine.

#4 420n620

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Posted 23 September 2017 - 06:30 PM

1.5" on mine.

same here on 521 j series. 


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#5 XXL

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Posted 26 September 2017 - 09:42 AM

Mine is also 1.5" all the way back. (late 1968 J)
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