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Discussion Starter #1
Does anyone know the diameter of the outlet side of this? I am thinking it is much smaller than the advertised 75mm. The outlet side fits inside of my 70mm TB.


Is this common on all MAF meters?


--Ray
 

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Not off hand but it should be larger than 75mm and should not fit inside a 70mm TB. If it does I would be concerned!
I just measure my TB & EGR spacer this past weekend and heres what I got:

65mm FMS TB = 66.5mm
67mm FMS EGR = 68.4mm

Which brand is it? I hope not a Pro-M, otherwise I'll be measuring that tonight!
 

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Discussion Starter #3
Yep, it is the pro-m. Could you measure both the inlet and outlet? I do not have a micrometer.

-Ray
 

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I measured (this is the O.D. & I.D. for the outlet of it only):

O.D. 3.050" = 77.47mm
I.D. 2.975" = 75.565mm

If you want I can measure the inlet opening but I would have to guess that the I.D. should be the same for both.
 

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The larger outer diameter on the Pro-M 75 matches near percectly with a 3.5" OD tube. I'm building an aluminum power pipe for mine, and 3.5" tube matches the inlet side.
 

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Discussion Starter #6
JoeDirte said:
I measured (this is the O.D. & I.D. for the outlet of it only):

O.D. 3.050" = 77.47mm
I.D. 2.975" = 75.565mm

If you want I can measure the inlet opening but I would have to guess that the I.D. should be the same for both.
Thanks for the info, that is good to know. I guess the opening on the 70mm (Edelbrock)TB is bigger than 70mm.

--Ray
 
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