4100 Auto lite

[odgt350]

Hi to all,
I'm needing advice on what size jets are suitable for my Auto Lite.
C 6ZF F R)
A 5HE
6ZrF
L3

I own 6S1817 which has the Paxton Supercharger and back in the day from previous owner installed.
Where can i purchase jets from as im based in Melbourne Australia. Are they the same as a Holley?
Any help from you guys would be appreciated.

Regards Rob

[pbf777]

  No, Holley jets are not the same.   

  As for jetting, start with what you have and then start jetting up or down for "best effect".   

  Scott.

[odgt350]

Hi Scott,
The front are 51f and back are 71.
That seems to be a big difference between them .
I'm not a mechanic so it would be great if i can get just a starting point .Its running a bit rich and the engine was rebuilt last year with around 1000 miles on it now .It's going thru alot more fuel ,and i don't want to wash out my bores and rings.
Also can somebody suggest a crank seal that doesn't leak,as the felpro with no part no. leaks .What crankseal would be suggested to use.

[pbf777]

    Looking on a list that I have for Auto-Lite carbs, "C6ZF-F" references .052 & .068 as being std. and this also for the "C6ZF-C", "C5OF-J", "C5OF-L". . . . . . . .etc.; this in Mustang, Fairlane & Falcon chassis w/ 289's.

    Interestingly the .051 & .071 jetting numbers are listed for the "C8AF-AE" for example (and probably others), which is for the '66 Thunderbird w/ 390/428. 

    Note that there's more to it than just "jet sizes", in the fuel control circuitry function of a carburetor, including the value of the "signal" as presented by the engine, so that's why the only correct answer to your dilemma is as I stated previously: beginning with what you've got and start jetting up (generally wise to prove truly "over-rich" first) and then down, including playing with the balance relationship between the primaries and secondaries, "for best performance"!   

    Scott.

[odgt350]

Hi Scott,
I made a mistake it was 51f and 70f.
Would you know what make for rear main seal to use.
thanks with info