Height of fuel pump spacer

[wcfvw69]

As I mentioned above, there was a seller on ebay selling a NOS made in the 60's flange with a similar picture of yours and the same part number and logo on it. I reached out to him to measure it. He came back with a measurement of 12.2mm. Couple that with me getting the same measurements from two of my original flanges on my engines, and the mystery continues in my mind.
_________________
Contact me at [email protected]
Follow me on instagram @sparxwerksllc

Decades of VW and VW parts restoration experience.
The Samba member since 2004.

**Now rebuilding throttle bodies for VW's and Porsche's**
**Restored German Bosch distributors for sale or I can restore yours**
**Restored German Pierburg fuel pumps for sale or I can restore yours**
**Restored Porsche fuel pumps or I can restore yours**
**Restored Porsche distributors or I can restore yours**

[bnam]

I measured a VW 303 flange at 12.75mm. From a 1600

_________________
1971 1302LS Convertible (RHD) owned since '74
Click to view image
1965 Karmann Ghia Coupe - under restoration
1966 Fiat 1500 Cabrio (with 1600 Twin cam)
1952 Citroen TA 11BL

[Glenn]

_________________
Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"

Member #1009

#BlueSquare

[bnam]

Another one...

So far, these seem to be in 3 thickness ranges - 12.2ish, 12.7ish, 13.2ish.

_________________
1971 1302LS Convertible (RHD) owned since '74
Click to view image
1965 Karmann Ghia Coupe - under restoration
1966 Fiat 1500 Cabrio (with 1600 Twin cam)
1952 Citroen TA 11BL

[wayne1230cars]

Interesting thread. There is at least one other size. The aftermarket spacer that I removed recently was 13.81 mm. This spacer was about 30 years old and had the VW/Audi logo, the same as the new CIP1 spacer pic that I posted earlier. It had not been machined.

As far as these height differences being significant I think there are some variables. When I removed my old pump, a 30 year old “cheapie”, the pushrod protrusion measurement was only 10.55 mm - 2.45 mm under the recommended 13 mm. That was with a worn pushrod - 107.4 mm. Car ran OK but generally did not get a lot of high speed highway use anymore. My theory is that this “cheapie pump “ was putting out a higher pressure, as many of them did, and this compensated for the thicker spacer.

The optimal VW spec of 13mm of pushrod protrusion assumed a fuel pump that was putting out the proper pressure. That was a given “back in the day” but not so much anymore.
_________________
1960 beetle
1970 beetle convertible

[Cusser]

I'd measure the spacer height on my two VWs, but I'd have to dig through my records as one has the original factory spacer, one has a replacement. But since the 1835cc engine is now in the 1971 and the 1600cc now in the 1970, can't remember if the replacement was done before I swapped engines.

I know the 1971 was the VW where I broke the stand; I was (foolishly) trying to quell an oil seepage issue, thought it might be from under the stand.
_________________
1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297