I resurrected a 750HP ..
Both shooter threads were stripped out. So I made threaded inserts out of #2 3/8 NF bolts with the 12-28 shooter threads inside.
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Then found center, and drilled for the 3/8NF threads..
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Once it was drilled, since my table was locked down, I used the chuck to start the threads..
making sure I went just far enough to install the inserts..
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once I threaded the ID of the insert, they were ready to install w/ retaining compound..
I did both sides. Hi flow screws will be used in place of the originals.
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The original down-leg boosters were generic non-stepped boosters with .382 ID's
These were replaced with AED single stepped down-legs with .438 ID's They flowed a combined 30cfm better than the originals. Booster signal also improved by .33 H20. mostly due to the increased airflow they gave.
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Sorry, no pics of the installation procedure. But I will say I don't crimp them in. too hard to get alignment. No bending..
I epoxy them in. it's easier to keep them centered with my special centering fixture and 'bubble' them in place that way.
Then knock them flush with an end mill and chamfer the openings.
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.073 T Slot restrictors in place too.
Metering blocks and bowls were in desperate need of refinishing, so I elected to add some color.
After a glass beeding, I mixed a small amount of deep black with generous amount of hardener and shot the parts with an airbrush. shooter diaphragm housings got it too. A Summit dual feed rounded out the look.
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the final touch was the custom secondary link. I found throttle opening angle to be crucial, so I crafted this link that can be adjusted without removing it. (I later beed-blasted that too for a nice finish)
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I'm glad I don't have to pay myself to do this stuff...