Packard Forum Index » Post-War (1946-54)

Hey Cortcomp, terrific! Now, maybe my dome is 180? off as a result of a previous rebuild? I noticed missing bolts all around the upper half (vacuum) of the pump. I hear Feltz is the man to make it right... or one of them at least.

Michal

Nope it is a different pump I just found another picture of a pump with the gas going up the rear of engine side rather than the front but it appears to be a single stage. The rebuilder should be able to make it work right, no matter which type though. Too much confuuuusiooooon.

Attach file:

---

  (19.05 KB)

This is the exact reason why in my rebuild article I recommend that a mark be filed where the flanges meet to serve as an index mark before reassemble.

The bottom is for sure rotated 180 out of skew. Best to have the pump rebuilt with a fresh modern fuel safe kit anyway since you don't know when it was last done.

When installed and plumbed, it should look exactly like the picture Howard posted above.

Uh oh... that second pic has a heat shield, which I don't have. Maybe I'll be fine as I have the double-stage pump. I'm also missing any hard lines from the pump to the carb... you guys think I should break out my tube bender and toss the current rubber hose?

Yes, for sure you want to have a new hardline made up. The heatshields always seam to get lost. Usually a lazy mechanic that didn't want to mess with putting it back on.

I would recommend you locate one as that really does help to shield the pump from exhaust manifold heat.

Also not sure about the 22 series, but later pumps also used a fitted hose with a threaded ends between the tank hardline and the pump inlet.

Look like there was some shade tree machine work done on it.

The more hardlines in a fuel system the better, as there's less chance of a fire.

Ask my dad at about rubber fuel lines and his 69 GTO with tri-power setup. There's a reason you can get tri-power manifolds but original carbs are hard to find...manifolds survive fires, carbs don't. That tells you how hot a gas fire gets.

Don't remember which engine you have but when you make your hard lines, this is the 22-23rd 356 engine routing using a similar pump to the one you have. The vacuum section on pump looks different though. The picture in post 9 with the front gas line routing is of the two smaller engines and similar was used thru 54.

Not sure if one route would be better than the other with todays more volatile gas to help reduce heat issues but agree with Kev, it should be metal. A shield is also a good idea but there are different styles for the engines. Some won't interchange so get the correct one if you decide to add it.

I notice none of the factory pictures have the Packard accessory fuel filter installed. Hopefully you have a filter somewhere because the screens built into the pump are not as fine of mesh as the filters.

Attach file:

---

  (14.15 KB)

Now that pump looks like my reman one but the air column bubble thing is on the rear like his....hrmmm.

The air dome is always on the outlet side of the pump and acts to smooth out the pulsations from the motion of the pump diaphragm.
Different orientations for the inlet and outlet are achieved by rotating the fuel or vacuum sections relative to the main body of the pump.

Quote:

Howard, that photo (post #12) appears to be a 21st series 356 engine with a single pump. Note the shape of the manifolds and the horizontal tube to direct air into the crankcase breather. The pump plumbing is like mine with the outlet and expansion chamber on the backside of the pump. My heat shield is different than the one pictured, but we have already discussed this in a different thread.

(o{I}o)