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RockinRobin

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Posts: 26
Reply with quote  #1 
What is the thread size for Holley jets?  My rear bowl extensions were going in real hard, so I got a new pair of extensions, but they go in hard, too, so it must be the threads on the metering block that are a little messed up.  I assume that I can clean that up with the right size tap.

PRO-SYSTEMS

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Reply with quote  #2 
https://www.jegs.com/i/Holley/510/26-1/10002/-1?CAWELAID=1710715333&CAGPSPN=pla&CAAGID=15769068431&CATCI=pla-193247796071&CATARGETID=230006180037475575&cadevice=c&gclid=EAIaIQobChMIzJWi3ZXe3gIVHp7ACh3A5QegEAQYASABEgLMaPD_BwE
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Patrick James-President
RockinRobin

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Posts: 26
Reply with quote  #3 
$54.00?? For a tap??  I looked up the same size on several sites and they are available for like $7.00, $8.00.  Is there something special about the one from Holley?
Thanks!
PRO-SYSTEMS

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Reply with quote  #4 
I sent the link not to sell you the tap, just to give you info on a tap and a source if you needed it.  There are 2 dollar taps and 200 dollar taps.  The taps we use in our CNC machines are 10 times more in price than a normal tap.  BUT they cut excellent threads and last much longer than a much cheaper tap.  You can also simply go to a local machine shop and have them properly and squarely tap it as well for maybe 20 dollars.
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Patrick James-President
RockinRobin

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Posts: 26
Reply with quote  #5 
Well, since I probably only need to use it once and now I know the correct size, I'll try one of the cheap ones first.
Thanks!

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