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Old 12-19-2017, 11:14 PM
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Tom Vaught Tom Vaught is offline
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Two other quick comments for tonight.

1) The 3-BBL Vacuum Diaphragm Stem is about .700" LONGER vs the 6-pack Vacuum Diaphragm Stem.
You can't add material to the 6-Pack stem to gain .700" additional length (splice in a section) because the hole thru the vacuum housing that bolts to the carb is not that large and the stem travels in an arc as it opens the throttle blades.

2) So the correct method is:
Grind off the old peaned over stem metal.
Create a new stem (using a lathe or careful filing.
install the new stem thru the 1st washer, thru the 6-Pack diaphragm, thru the 2nd washer, and then with everything in place pean over the new stem over and you are done.

Sounds confusing but a simple inspection of a vacuum diaphragm, makes it very clear.

Tom V.

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