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Vortech FMU ratio?

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Old 02-19-2003, 09:10 AM
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Default Vortech FMU ratio?

How can you know for sure what ratio a Vortech fmu is?I bought one from a freind.It is black in color.He said it came w/a drag turbo kit a year and half ago.I took it apart to see if anything was marked on it and didnt see anything.Most FMU ive seen have been blue in color.
Old 02-23-2003, 11:51 AM
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Default Re: Vortech FMU ratio? (COLORPROS)

the size of the plate inside
Old 02-23-2003, 12:11 PM
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Default Re: Vortech FMU ratio? (p0gi)

measure the disk inside (diameter). it's probably 12:1 or 10:1.
Old 02-23-2003, 01:25 PM
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Default Re: Vortech FMU ratio? (b16ahybrid)

My 12:1 was black. What's the part number stamped ont he bottom? Sometimes you can tell by looking at that.
Old 02-23-2003, 01:31 PM
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Default Re: Vortech FMU ratio? (inspyral)

I had a black one too.

Searching resulted in :
https://honda-tech.com/zerothread?id...607037#2607037

12:1 2.71"
10:1 2.46"
8:1 2.22"
6:1 1.85"
4:1 In the car and dont wanna measure it...its smaller though.

Old 03-11-2003, 04:47 PM
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Default Re: Vortech FMU ratio? (niedejb)

mine is 12 to 1, purple
vortech
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