18 hours ago, rosaaen89 said:

If the windings behind that cardboard like cover aren't broken that one looks good. I'd guess it's not the original.

After the soak @wheee! came up with it'll be like new. 

this is after the muriatic acid , soda and water mixture, and acetone . still wet now but i think it looks better then it did 

i let everything soak for about 15 minutes and tumbled everything around . how long should i let it dry for with the heat gun in it ?

i noticed there’s bubbles and stuff at the bottom of the tank , idk what it is if it’s still the other sealant 

Take a hot pressure washer to the inside of that tank.... makes a huge difference!

https://www.classiczcars.com/forums/topic/50908-1976-280z-restoration-project/?do=findComment&comment=537912

Edited October 14, 20204 yr by wheee!

2 minutes ago, wheee! said:

Take a hot pressure washer to the inside of that tank.... makes a huge difference!

https://www.classiczcars.com/forums/topic/50908-1976-280z-restoration-project/?do=findComment&comment=537912

that’s what i originally did before i did everything . i took it to the car wash pressure washed everything . did muriatic acid , baking soda , acetone. idk if i should even try to use red kote after it dries because idk if it’ll stick to what’s left  

No, you need to do the pressure wash last, after everything has been loosened up. Read my thread link above and see all the steps I did for the finished result.

i’ve pressure washed, acetoned 3 times , 3 baking soda rinses , muriatic acid , not in order but in total and it don’t look much better then it originally did. i feel like i’m just wasting time and money . i’ll try pressure washing one last time

3 minutes ago, rosaaen89 said:

i’ve pressure washed, acetoned 3 times , 3 baking soda rinses , muriatic acid , not in order but in total and it don’t look much better then it originally did. i feel like i’m just wasting time and money . i’ll try pressure washing one last time

Stick a metal rod down there and see if that stuff is loose and breakable or tough and bonded to the surface.  Give it a good scrape and see what happens.  The tank sealer just needs a good solid clean surface to stick to.

21 minutes ago, Zed Head said:

Stick a metal rod down there and see if that stuff is loose and breakable or tough and bonded to the surface.  Give it a good scrape and see what happens.  The tank sealer just needs a good solid clean surface to stick to.

it’s hard i took it to pressure wash again nothing even came out tried to scrape it with the metal end. guess i’m just gonna run one last thing of acetone and let it dry out and red kote it. idk what else to do other then drive a couple hours each way and drop it off at a radiator shop 

39 minutes ago, rosaaen89 said:

i’ve pressure washed, acetoned 3 times , 3 baking soda rinses , muriatic acid , not in order but in total and it don’t look much better then it originally did. i feel like i’m just wasting time and money . i’ll try pressure washing one last time

Did you shake it with the washers and nuts?

This is just me, but if there are no pinholes I would run it as it is.  Make sure you have a good cap to keep the moisture out and maybe add a prefilter on the tank outlet.

Most people with Z's that don't have fueling problems probably don't realize how rusty the inside of their tank is.  No offense to those that don't know.  Go look and post a picture.

One of the keys to using Red-Kote is to make sure it's dried/cured before adding fuel.  Also notice that they do not say that all rust has to be gone.  Just most of it.

http://damonq.com/red-kote.html

http://damonq.com/TechSheets/Red-Kote.pdf