Holley Carb Question
 

is it possible to helicoil the threads in the squirter hole, and what size are said threads?

Re: Holley Carb Question
 

The thread size is a 12-28 NF ----not sure if a helicoil is made in that size OR if you do drill it out if there will be enough material left to screw in the helicoil---Comp 387

Re: Holley Carb Question
 

It was a long time ago and I forgot what thread insert I actually used. It wasn't the correct one, but it was close. The screw was forced on and I had to use the hollow version because the insert basically blocked the original passages along the sides of the threads. Don't know if that's legal for class. But it got me by on my bracket car.

Re: Holley Carb Question
 

Heli coil does sell a kit this size. You can try the high flow squirter screw first they have a few more threads.

Re: Holley Carb Question
 

AHeli coil does sell a 12-24NC but no 12-28NF---you might try a 12-24 and then run a 12-28 tap thru it see if it works---not sure if there are passages in the side of where the bolt goes thru--you might try the tech dept at Holley or any reputable carb guy to get an answer--Comp 387

Re: Holley Carb Question
 

Try calling


Lavizzi Precision Products

999 Regency Dr

Glendale Hts., Il 60139

1-800-323-1772

They sell a 12-28 helicoil kit----Comp 387

Re: Holley Carb Question
 

Chad

I stripped the threads on the squirter, found a kit from Bo Laws web site and it worked great.

R J Sledge

Re: Holley Carb Question
 

wow there's a name from the past. Didn't know he was still around. I will check that out.

Re: Holley Carb Question
 

I think they are now BLP