ARCHIVE SOLD OUT NM New NipponDenso Single Diaphragm Vacuum Advancer for '78 through '80 2F Electronic Distributors (1 Viewer)

[4Cruisers]

This is a replacement single diaphragm vacuum advancer for 09/77 through 07/80 2F electronic distributors. Applications include:

1) '78 2F Federal spec vacuum retard and advance distributors - replace advancers that have failed diaphragms.

2) '78 2F California spec vacuum retard distributors - convert distributors to vacuum advance.

3) '78 2F high altitude spec vacuum advance distributors - replace advancers that have failed diaphragms.

4) '79 and '80 2F dual vacuum advance distributors - replace advancers that have failed diaphragms. Only for earlier Land Cruisers without the provisions for high altitude compensation (HAC), or for those living at low altitudes where HAC isn't needed.

The vacuum advance curve is very similar to the curve for the 09/77 through 01/79 high altitude spec advancers and Federal spec advancer main diaphragms. Advance begins at 3.94" Hg (100mm Hg), the same as the NLA 2F high altitude spec advancer (Part Number 19220-61110). The vacuum advance upper stop limit can be set by adjusting the position of the two locking nuts on the actuator rod. Installation requires drilling out the tapped blind hole used to secure the original advancer to the distributor housing. No other modifications are required.

I have a limited supply available for $60 each shipped.

 

[4Cruisers]

TTT - heading out later today for my weekly Post Office run.

 

[erics]

Can an average joe set this up appropriately or is a dizzy machine or other equipment needed?

In other words could I just pop this in to replace a failed dual diaphram advancer in a 79 dizzy to provide just "normal" advance without HAC?

How would I know where to set the upper limit at?

 

[4Cruisers]

I've got these modified to physically fit directly into the '77 through '80 electronic distributors. I set the upper limit to approximately 10 degrees maximum vacuum advance (distributor advance) by leaving a 4mm gap between the inner surface of the inner lock nut and the advancer housing, which limits the travel of the arm. 4mm lateral travel of the arm rotates the stationary plate approximately 10 degrees. I had to re-learn what I forgot about calculating the angles of a right triangle .

As I mentioned above, all you have to do is drill out the tapped blind hole and thread it the rest of the way through - #19 drill bit and a 5mm x 0.8 tap. Takes about 10 minutes and it's easy to do given that the distributor housing is aluminum.

 

[4Cruisers]

Just a few left.

 

[4Cruisers]

Bump - just a few left.

 

[4Cruisers]

TTT

 

[4Cruisers]

UPDATE:

Now sold out. I'll be using the last two in my inventory to convert early 2F (1/75 through 8/76) distributors, 19100-61020 , to vacuum advance. Watch for these distributors in the For Sale forum in mid-January.