Fuel Sending Unit Details - Tape and Sleeve

[Edgemontvillage]

For the 3/8" single fuel line on my '69 Z, the pipe terminates at the top of the rear frame rail then connects via a 5" rubber hose to the fuel sending unit. The sending unit's fuel pipe is secured, in part, by the fuel tank strap where there is a pinch point between the tank and strap (see photo and AIM diagram). At this position the sending unit pipe is protected by a rubber sleeve covered by tape (see AIM Parts #5 & #6.). During the disassembly of my project I took photos of the sleeve and what was left of the tape. I assume the tape is a crepe style as was used elsewhere during the assembly process. Does anyone have better information on the tape used on the sleeve?



Pinch point securing sending unit pipe showing protective rubber sleeve and tape remnants prior to disassembly


Sending unit pipe, sleeve and tape residual following removal of the fuel tank

[169INDY]

I still have been looking for the spoiler tape.

Take a peek at 3M Temflex Friction  1755

[R68GTO]

Here's some pics of my isolator and tape.

[Edgemontvillage]

Here's some pics of my isolator and tape.

Excellent photos and details Jim, good foresight in taking the time to document this detail originally and thank you for posting.

From the photos it appears the tape is plastic-electrical or asphalt based?  

[169INDY]

The Lighter strata layering (Wisps of white or beige) suggests paper or cloth (?) rather than "pure" vinyl or rubber

[R68GTO]

Here's a better shot of the underside of the tape.  I couldn't take a close enough photo to show the fibers but the thin hair-type fibers run perpendicular to the length of the tape.  Also included pics of the tape that holds the sending unit wire to the top of the tank - it's the exact same stuff.  Wanna know more details on my tank, let me know - I have pics of the mastic glue smears used to hold the pads and pics of the steel supplier stencil also.

[R68GTO]

couple more...

[Edgemontvillage]

More good photos, thanks. Jim, does the tape look like anything that's commercially available currently?

[169INDY]

I should have my hands on 3M Temflex Friction  1755 by next week.

Sample of (Photos) 1968 LOS Dec 67 build L35 Car

[ZLP955]

Interesting clip to the left of the sleeve in Jim's last picture above.

[bcmiller]

Interesting clip to the left of the sleeve in Jim's last picture above.

Looks like a typical fuel line clamp, used farther down the line.

[ZLP955]

Interesting clip to the left of the sleeve in Jim's last picture above.

Looks like a typical fuel line clamp, used farther down the line.

Interesting in that location

[169INDY]

The REPOP clip was put on years ago when a Kinked Fuel line rubber hose was presenting a fuel delivery issue, the clip must have slid over during the removal. Tank was removed and on the ground at this point.

[R68GTO]

More good photos, thanks. Jim, does the tape look like anything that's commercially available currently?

I have never searched for a filament type tape like that.  I compared my electrical harness tape to the black side of this tape and while different, you had to look really close to see the difference.  Given the location of this part, I just wrapped it with that.

[firstgenaddict]

On corvette vacuum headlamp hose bundles and on a few places on the wire harness there is a tape used to bundle things together which appears on the adhesive side like friction tape but has a black smooth front surface, (like harness wrap or electrical tape but this black smooth front is only a fraction of the thickness of electrical tape or harness wrap.)  (not to be confused with the fiberglass filament tape used at the vacuum "T's".)

NO ONE ON THE NCRS boards had found a suitable replacement as of last year.

I replaced a couple of sections and used friction tape of the correct width combined with 1/2 mil black plastic cut to the correct width as the tape . 

Does this appear to be the same type of tape as on the sending unit wire?

[firstgenaddict]

Ok in my 1971 corvette assm manual there is a reference to 3724851 tape at a location inside the car & behind a console panel.
I will remove it later today, take a photo, and report my findings.

[169INDY]

I should have my hands on 3M Temflex Friction  1755 by next week

ALL, I got a Roll of the 3M 1755 & it is more like the tape used to serve the rear light harness in the trunk, cloth fiber -vs- crepe

still looking,,,,,,,,,

[firstgenaddict]

I could not find the place behind the console where the tape was indicated to be located.
I will try another location...

[Edgemontvillage]

I should have my hands on 3M Temflex Friction  1755 by next week

ALL, I got a Roll of the 3M 1755 & it is more like the tape used to serve the rear light harness in the trunk, cloth fiber -vs- crepe

still looking,,,,,,,,,

Jim, to clarify are you looking for a crepe-style tape or fiber-cloth?

[169INDY]

Given the photos of the back side of the tape, It really looks like a paper backing of some kind rather than cloth, I was disappointed in the 3M 1755 which looks just like the AMK & others cloth rubber tape used on a 67-68 rear taillight harness.

[firstgenaddict]

A few of the previous photos make the tape appear to be -(I think they are Lloyds) crepe paper and appear to be over 1/2" maybe 9/16-5/8" wide, and then a couple appear like the thin plastic tape with fiber backing and appear to be under 1/2" -maybe 3/8 -7/16 wide ?
Am I making the wrong judgement as far as sizes and composition of tape go? 
 

[mgreenz]

Here are offerings from AMK that include a 5/8" wide black masking tape. Part# B-11664 is described as "Commonly used to attach GM wiring harnesses to body structure or tie loose wires". Could this be what you're looking for?

It's been a marathon trying to attached the photos. My apologies if I've got it wrong.

[169INDY]

Nice photo, that might be a match!

[ZLP955]

Checked my LOS tank sender today, rubber sleeve is there but no tape.......

[Edgemontvillage]

A few of the previous photos make the tape appear to be -(I think they are Lloyds) crepe paper and appear to be over 1/2" maybe 9/16-5/8" wide, and then a couple appear like the thin plastic tape with fiber backing and appear to be under 1/2" -maybe 3/8 -7/16 wide ?
Am I making the wrong judgement as far as sizes and composition of tape go? 
 

The photo of my sender seems show a crepe / masking tape style tape much like in Reply #21. 

[Dusk Blue Z]

This is a picture of of the top of my tank during restoration, 28K never out of the car. The tape in the picture while not shown in the AM, was in my opinion the same as used on the fuel line and ground strap rubber cover. No pictures of that part of the tank. It was thicker than regular masking tape. I used 1" wide "Freezer Masking Tape" to replace it.

There was also the number 26 printed on the tank which was probably a mill mark for the steel.   

[Dusk Blue Z]

Just took a second look at the picture. The wire from the fuel sending unit is over the tape, there was "no stick" left on the tape. The glue from the anti-squeak strap was the only thing holding the tape on the tank.

[Edgemontvillage]

I decided to use a crepe style tape based on the photo evidence of most of the original tape remnants. I narrowed the 2" width tape I had to about 3/4" and transferred the rubber sleeve from the original sending unit onto an NOS sender I was able to source. 







Thanks to the Members who contributed!

[firstgenaddict]

Lloyd,
You may have not noticed that the grounding terminal on the replacement fuel pickup/sending unit is different than the assembly line installed one. Squared and brass VS steel and round
I swapped it out on one of the cars I did because I couldn't find a correct replacement.

I annealed the original with a torch then pried open the tabs and put it on the replacement sender. FWIW If you don't anneal the metal the tabs will break off when trying to "recrimp" it.
Here is a photo of your original posted earlier.

[Edgemontvillage]

James, yes I did notice. I removed and restored the original sending unit ground strap terminal for that reason however I made the mistake of cutting the wire short when I removed it from the old sender so the only way to replace it would be to splice it in-line. I was thinking of soldering it then using shrink tube followed by tucking it under the crepe tape. Based on your constructive "terminal shaming" I may just do that!

 

[firstgenaddict]

Mine was yanked off at the terminal end or ELSE I would have done as you suggested.

as an aside... when comparing the two photos... you are pretty much crime scene forensic in your replication...
I enjoy seeing your attention to detail and the sheer number of hours experimenting to find the correct finish.
Sometimes it is mind numbing, however the research and all of the experimenting is what keeps my attention.
Recently I was contacted by someone planning the painting of a 59 big brake fuelie I said that is going to take a good bit of research into some pretty rare cars, ok send me some photos... Glutton for punishment or addicted to it.     

[169INDY]

That Terminal is obsolete; Terminals - Spade Connectors
Inner Teeth, Serrated Termination
Terminal Type: Standard, flat sided, rectangle,
Stud, hole, #8
Barrel, Uninsulated, Wire Gage:16-22 AWG
Termination; Crimp
Contact Finish Natural
Contact Material Brass

have to harvest used ones.

Close but no cigar.

http://www.texasindustrialelectric.com/_packard_terminals.asp

[1967butternut]

Just for more data, here is a pic of the padding sleeve from my 67 LOS car before tank was removed for the first time. There was a bit of dried tape left covering the middle of the sleeve.