weeles

In the process of restoration on my 1986, I had to remove the rusted sending unit and pump, pump out the old crap fuel and clean the inside of the tank by hand with my arm past the elbow through the opening of the sending unit. While I was cleaning the inside there was some sharp sections in the opening that were cutting my arm so I hammered the sharp sections so it wouldn't continue to cut me.

Now I am rebuilding all the small touches and after install of the rubber overflow and rain water pan at the fuel fill neck, noticed that the tank has somehow rolled backwards at the top and the rubber.
I have tried to loosen the strap nuts but they are quite tight and I don't want to risk breaking the straps and having to remove the rear bumper.

Has anyone come across this before?

Anyone have a suggestion on how I can get the tank back into place properly?

I will upload a photo when I can as I seem to be having issues with file type even though it says its one file type on my computer but the site says it's something else.

ChumpVette

Doubt the tank moved as it is tightly strapped in place.

weeles

What would you think it could be?

I Don't know if this number has a meaning other than for Corvette depot but the sending unit I got was model #1029576 (they said it was for my year). I have checked from top of sending unit mounting edge to neck start of the filler head and they are the same. I will check later for any possible angle difference but right now the pan is about 1/2" low.

I still can do the picture at this time some might have to redownload image.

Thanks for the quick response CV

ChumpVette

As always pictures are worth a thousand words.

weeles

I keep trying do apply the pic but something seems to be going on. will keep trying to fix the issue with the photo.

weeles

Just figured what I was forgetting to do. LOL

Incorvettei

I don’t see the boot in that last picture

weeles

The black tray surrounding the gas cap, I don't know to call it a pan watertray, overspill boot, drip tray.

I still have the original sending unit and will try and confirm measurements before I have to remove the new sending unit again to verify everything again.

Since CV stated the gas tank can't roll.

Natty C

I never hit my strap nuts with a torque wrench. Just a little over-snug.

I should look in the FSM and see what the torque is supposed to be and check it. I can't imagine that those things would have to be really tight.

Ray Quayle

Is it just the angle of the pic or is that tray in upside down?

weeles

I never touched the straps holding the tank down, just swapped out the sending unit. While I thought after I knew something was wrong I did try to loosen the straps but they didn't loosen and I was worried about forcing it and breaking the strap so I stopped. The tank is sitting on the supports underneath though.

weeles

The short side of the tray is facing the front of the car and the high section with the drain connection is facing the rear.

car addict

Looks upside down

Natty C

Yeah, ChumpVette's thought on the straps previously in the thread just reminded me that I never torqued em is all.

Was just thinking out loud...

weeles

Left side of picture is back of car and that's were the deep section of the tray is and the drain.

ChumpVette

The other thing, the tank has flat spots where it rests in the back bumper support. I’d be curious seeing the filler neck compared to the old. I almost want to say the assembly has been installed oriented incorrectly.

weeles

Removed the tray this morning and have an attached pic.

One question I have is If it was installed wrong orientation and hoses were in same location as the old one, would the car run?

Kilobuck84

The bolt pattern on the flange is not symmetrical, so it can't go in the wrong way.

Natty C

That tank can't be sitting right. It's the only way this would happen.

Ravendagrey

This is what the spout looks like on my 84 so something is up for sure, but you're right it appears the tank has shifted/rotated towards the rear of the car by a few degrees. I know this doesn't help much but will validate your sanity.