Home page
SPONSOR AD

Topic: Fuel Tank Leak

in Forum: C3 Fuel, Emission Control, and Exhaust Systems

Fuel Tank Leak

Posted: 11/1/07 5:50pm Message 1 of 5
Former Member
Send PM
Yelm, WA - USA
Joined: 7/12/2007
Posts: 356
Vette(s): 1979 L82 4 speed Scat 383 crank 190 cc Procomp Aluminum Heads 202 160 stainless valves GM Powder metal rods Speedpro H860CP Hypereutectic pistons 280 cam hydralic HEI Pro comp 1.6 roller rockers Mighty Demon 750 Sanderson CC1AP Hedders.

Started cleaning up the fuel tank last night and today, it's an aftermarket looks like the Ecklers one with no bladder. I thought it was in nice shape until I removed the the top and peeked inside, it's lined with fiberglass??? Anyways, a couple of breaks in the liner how,,? don't ask me? I had suspicions of a leak and found a tiny hole on the bottom. I called Por-15 tech and they said the tank sealent isn't an option with the lined tanks but maybe some por-15 on the outside might do the trick. The tank is in otherwise great shape, seems like patching would be the way to go. Any suggestions would be helpfull!!!




SPONSOR AD:: (Our Sponsors help support C3VR)

Fuel Tank Leak

Posted: 11/1/07 6:59pm Message 2 of 5
Profile Pic
Lifetime MemberLifetime Member
Moderator
Send PM
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
My experience has been that putting anything on a fuel tank to stop a leak is a temporary fix at best. You have to unnerstand that the tank expands and contracts with temperature changes, and vapor pressure.
I "fixed " the original tank on the '74 several times before I gave in and bought a new one. Well worth it.
Don't know aboot the POR stuff, but they do have some great products. It just might be worth a shot.


Joel Adams
C3VR Lifetime Member #56    

My Link


(click for Texas-sized view!)
             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

Fuel Tank Leak

Posted: 11/2/07 9:11am Message 3 of 5
Profile Pic
Former Member
Send PM
Victor, NY - USA
Joined: 7/12/2004
Posts: 6841
Vette(s): 2004 Commemorative Edition Coupe, Auto w/HUD. 13K miles in 2015. Sold 1982 Red Coupe
Can a rubber bladder be installed?
 
If that is a stupid question, forgive me for being uneducated in the special science of Corvette gas tanks.Cry



 
Save the Wave!
Support the National Corvette Museum   

Fuel Tank Leak

Posted: 11/2/07 9:41am Message 4 of 5
Former Member
Send PM
Yelm, WA - USA
Joined: 7/12/2007
Posts: 356
Vette(s): 1979 L82 4 speed Scat 383 crank 190 cc Procomp Aluminum Heads 202 160 stainless valves GM Powder metal rods Speedpro H860CP Hypereutectic pistons 280 cam hydralic HEI Pro comp 1.6 roller rockers Mighty Demon 750 Sanderson CC1AP Hedders.

I was wondering the same thing myself. On the inside it's got what looks like a couple cracks, (tears) in the fiberglass. So I'm thinking that it would probably cut the bladder even if I could get one in there. I'm




Fuel Tank Leak

Posted: 11/2/07 10:03am Message 5 of 5
Profile Pic
Lifetime MemberLifetime Member
Moderator
Send PM
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
Yeah, if the inside of the tank is not smooth, it will cut, or wear into the bladder, and you'll be right back where ya started. Plus...where the heck ya gonna find a bladder for one, anyway? I'm not aware of anyone producing them. Does anyone else know if they are or not?



Joel Adams
C3VR Lifetime Member #56    

My Link


(click for Texas-sized view!)
             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

in Forum: C3 Fuel, Emission Control, and Exhaust Systems


SPONSOR AD: (Our Sponsors help support C3VR)