17059286 0977 marine carb

[Cliff Ruggles]

I would replace them with new jets, and new metering rods.  I quit using used jets decades ago, pretty rare to find a set that will not be worn some from the metering rods sliding in them for many years.

It will need different metering rods as well than the stock ones.  I've built hundreds of those here and we use a lot of those for our custom electric choke front inlet units.  They are a bit too lean on the primary side so we use a different jet/rod combo in them with perfect results.....Cliff

[Hotrodssnova]

I will build it to the recipe #2, I  forgot it listed the rod sizes.

[Hotrodssnova]

I got the idle tubes out.  The restriction measures out to .051. Now this is where I need some help. I have been all over the book and can't figure out  where the idle down channel is.

Also, the small end of the idle tube that is necked down, is that what I want to enlarge? #2 is calling for an idle tube of .037 to .038.

[77cruiser]

It's the restriction to the outside of the idle tube, about a 1/4 inch away. It's recessed a bit.

[Hotrodssnova]

Thank you for the picture. I was assuming that was it, but, you know.

[Hotrodssnova]

Update time
I got the carb all back together and the sbc dropped in the jeep. Firs start didn't go so well. The top plate was warped and let fuel seep up between the primary bores. I took the carb back apart, checked the float level first (it was good) then checked top plate. It was quite obvious it was warped when I held the flat edge on it.  Took all the tubes and butterflies off and went to town. With a flat 1/4"steel plate as a base, i put a full sheet of 150 grit sandpaper and sanded it down to a perfect flat surface.
  Cleaned it up and reassembled. Started up after it cleared up the extra fuel. Got the cam broke in, and started to tune. Nozzles were dripping.  Opened up the mixture jets 7 turns and it stopped. Noticed that I still had fuel showing up around the pump rod on the top of the carb.
  Logged on here, found that the stock aftermarket fuel pumps could pump too much pressure, blowing the needle off the seat. Got a fuel pressure guage and it showed 11 psi!
  Installed a fuel pressure regulator, dropped it to 5 psi, and the fuel stopped seeping. 
I am now at the point of tuning the apt and locking everything down.
Thanks for all the help!
And thanks go to Cliff for his book and parts!

[Frank400]

Now those are good news !  It's at that moment that it gets rewarding, seeing that all the work pays off. 
 
    You should NEVER let your guard down.  Never assume anything. Check and double check EVERYTHING.  That way when a problem arises, it will be a lot easier to pinpoint. 

  Like Cliff says: I like old stuff...it does what it's supposed to do.

      Frank.

[Cliff Ruggles]

Good news, glad you got things sorted out.....Cliff