DJoh797014@aol.com wrote:
> Theo
>
> Another thought, make sure you are using the proper 10v sending
> unit. A 12v unit fits the F4B but can lead to wrong readings. I
> wound up reinstalled the original sending unit using the rube
> goldbarb system Rootes came up with. You know, the Tee
> fitting for the ending unit and the ground wire that fits in the
> hose.
DJ,
The "rube goldberg" system of the original 2 barrel installation is
straight forward, and returns the water through the hot water
passages in the carburetor spacer. This spacer cannot be used with
a 4 barrel, and the F4B and the hood have a disagreement with a
thick spacer. The correct solution is to mount the sender in the
manifold hole provided for this purpose in the LAT 1 system. For
the Tiger manufactured units, this was a 9/16 x 18 straight thread,
not a pipe thread, like the standard F4B unit. Many have tried
re-threading a pipe thread adapter. This is not good, as the OD of
the 9/16 is almost the same as the root thread of the pipe thread
adapter. Re-welding the sender hole closed (not easy with the old
aluminum) and re-threading it correctly is the way to go. Off the
engine, of course..
--
Steve Laifman < One first kiss, >
B9472289 < one first love, and >
< one first win, is all >
< you get in this life. >
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