(1) The needle seat uses a gasket
(2) The correct needle and seat from the bottom should be: gasket, seat, needle, spring, "golf tee".
(3) Question too general on extra parts to answer, but there is no external seal on the throttle shaft.
(4) USE THE GASKET SPECIFIED FOR THE CARTER CARBURETOR, FORGET ABOUT HOLES IN THE SPACER, UNLESS YOU ARE USING A SANDWICH GOVERNOR.
EDIT: The holes in the spacer are for use with the original Rochester carburetor; the Carter gasket will provide the necessary vacuum signal for the Carter carburetor. If using a sandwich governor, you will need to determine what vacuum signal is required by the governor, and then when to obtain it.
Jon
1) Good.
2) I got it right!
3) I guess they just provide a crapload of seat gaskets? Or perhaps some are meant for parts of an auto choke carb?
4) I wasn’t as concerned about the spacer holes as I was the hole in the Carter’s throttle body that is blocked by this particular gasket. I bought a cheap Walker kit, and if they can’t get the needle/seat right, I have a fairly low level of confidence that they got the gasket right. Idea here was minimal investment (basically replace pump and gaskets) because I wasn’t sure how this core would clean up. Then, upgrade to to a proper (likely Carbking) kit once I have proven it functions.
Side note: I had a fair bit of conversation offline with the other Jon, Jon G, about the incorrect seats, wrong orifice sizes, etc etc. But I’m from the Show Me State and have to see things for myself sometimes. Even though I ordered the “correct” (least wrong) Walker kit....I can validate that none of the supplied stuff would match what came out of the carb. I did measure the orifice best I could with a drill bit. What was in the carb matches what Carter spec’d for the 2100. Both of the supplied Walker seats have an orifice significantly larger.
