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 Post subject: QFT metering Blocks
 Post Posted: Tue Oct 11, 2011 8:53 pm 
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Joined: Thu Jan 29, 2009 10:59 am
Posts: 438
Location: Auburndale, Florida
I have in my possesion a pair of the green QFT 2 circuit blocks. I also own a pair of the red QFT 2 circuit 3 emulsion blocks. Soooooo.....I thought I'd pop out the mainwell plugs to see whats in there. Both blocks have identical mainwells which a #2 tapered reamer is too large.

The green block emulsions are .027, blank. .027, and blank. Anti-siphons are also .027. Mainwell exits are .160. I really thought that these blocks would be a little more special than just anodized green and a fourth emulsion.


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 Post subject: Re: QFT metering Blocks
 Post Posted: Tue Oct 11, 2011 10:04 pm 
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Joined: Mon Oct 29, 2007 7:07 pm
Posts: 1422
Location: Florida
But the green is cool, right? :-


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 Post subject: Re: QFT metering Blocks
 Post Posted: Wed Oct 12, 2011 8:27 am 
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I have a set of green QF blocks that are about 3 years old and they measure, mainwell .182 no taper, cross exit is .160, eholes and anti siphon are .028, top to bottom are, open, blank, open, blank, came with a .043 IFR at top and a PVCR of .073.


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 Post subject: Re: QFT metering Blocks
 Post Posted: Wed Oct 12, 2011 3:05 pm 
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Joined: Mon Nov 01, 2010 8:37 pm
Posts: 24
I have seen this as well. The original blocks were the ones described above. They changed their design on the newer style. They are a little different than the red blocks however will not work on much more than a 750 carb. I have run the new style blocks on a couple 750's and they work very well. The combos are mile SBC running 11.90's and 11.60's. I drill the main wells for anything bigger than 750.

QFT Green Blocks
Main Well .164 - .187
Idle Well .096
Cross Channel .161
PVCR .073
Emulsion Blank-.028-Blank-.028
Kill Bleed .028
IFR .043


QFT Red Gas Blocks 34-4
Main Well .158-.180 Taper
Idle Well .096
Cross Channel .140
PVCR .055
Emulsion .025-.025-.025-.025
Kill Bleed .028
IFR .035


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 Post subject: Re: QFT metering Blocks
 Post Posted: Wed Oct 12, 2011 4:03 pm 
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ajcasini wrote:
I have seen this as well. The original blocks were the ones described above. They changed their design on the newer style. They are a little different than the red blocks however will not work on much more than a 750 carb. I have run the new style blocks on a couple 750's and they work very well. The combos are mile SBC running 11.90's and 11.60's. I drill the main wells for anything bigger than 750.

QFT Green Blocks
Main Well .164 - .187
Idle Well .096
Cross Channel .161
PVCR .073
Emulsion Blank-.028-Blank-.028
Kill Bleed .028
IFR .043


QFT Red Gas Blocks 34-4
Main Well .158-.180 Taper
Idle Well .096
Cross Channel .140
PVCR .055
Emulsion .025-.025-.025-.025
Kill Bleed .028
IFR .035


So are the green blocks suppose to be for E85 then? :-k

I've got a set of their red blocks on an old style 8896 1050 Dominator but I can't remember the mapping for those. #-o

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 Post subject: Re: QFT metering Blocks
 Post Posted: Thu Oct 13, 2011 4:11 am 
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Posts: 24
Yes the green blocks are QFT E85 calibrated metering blocks.


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 Post subject: Re: QFT metering Blocks
 Post Posted: Mon Jun 11, 2012 12:12 am 
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Joined: Sun Jul 10, 2011 6:32 pm
Posts: 24
Location: Central Oregon
I have the QFT green blocks and I just pulled the main plugs and I can't get a #2 taper in there. I reamed it for the #2 but it also came with .043 ifr,. 076 pvcr, .028,p,.028,p and these were purchased in may '12. The cross channel is at least .160

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