Epoxy for Thermoquad Wells

[Binder Brothers]

What brand of epoxy works best for the wells at the bottom of the plastic body on the thermoquad? I found a posting on this, but the link to the product no longer works. Thank you.

[CharNational]

I've used JB weld "JB qwik" on quite a few of those "Baby oil pans" in the bottom of the phenolic bodies and the last one I did back in 2001 is still holding perfect. Those are already glued with an adhesive when they were built at the Carter Factory, but after 20-30 years, it gives way to being constantly submerged in fuel. The JB weld is impervious to that and will hold up better. It's a two part epoxy that you squeeze equal amounts together and mix. I used a small flatblade screwdriver to mix & apply mine due to the fact that you don't need much to do those wells. I used a piece of cardboard to mix it on that you can throw away once done, then I wiped screwdriver off with a paper towel before it sets.

[redhead_823]

Originally Posted by CharNational

I've used JB weld "JB qwik" on quite a few of those "Baby oil pans" in the bottom of the phenolic bodies and the last one I did back in 2001 is still holding perfect. Those are already glued with an adhesive when they were built at the Carter Factory, but after 20-30 years, it gives way to being constantly submerged in fuel. The JB weld is impervious to that and will hold up better. It's a two part epoxy that you squeeze equal amounts together and mix. I used a small flatblade screwdriver to mix & apply mine due to the fact that you don't need much to do those wells. I used a piece of cardboard to mix it on that you can throw away once done, then I wiped screwdriver off with a paper towel before it sets.

what he said

[Binder Brothers]

Thank you for the info.

I also found the Miller-Stephenson epoxy. It's number MS-907.

[Tim Potter]

According to Michael Mayben's work up on TQ's; JB Weld will not hold up due to the ethanol content in fuel. His recommendation is the MS epoxy you listed. Last I heard this is still the epoxy of choice for this application

[Doc Stewart]

Tip on mixing any epoxy: When you have mixed enough, mix that same time again. It can't be over mixed but it can be undermixed.

I have repaired a couple of gas tanks with JB Weld and it has held a long time. However, every time I disagree with Michael, I find that he is right....

[Tim Potter]

Originally Posted by Doc Stewart

However, every time I disagree with Michael, I find that he is right....

There is very little point in disagreeing with Michael........He's always rigth

[radar232]

Hey fellas!
I just got my hands on some awesome stuff!!! Started a thread. Check the "Tool Box."
Why more advanced than JB Weld!!!

[CharNational]

Originally Posted by Tim Potter

According to Michael Mayben's work up on TQ's; JB Weld will not hold up due to the ethanol content in fuel. His recommendation is the MS epoxy you listed. Last I heard this is still the epoxy of choice for this application

Hmmm, Every single one of the wells I repaired with JB weld, going back to 1990, is still holding to this day. It seems the people who want to get rid of ethanol, or those that don't like it are quick to blame it for problems that were happening long before ethanol even existed. I've been putting fuel with ethanol in my scout for over 15 years and it has never had a problem, and the TQ on it is one of the hundreds I've repaired. I've seen more fuel related problems with booster additives and drygas.

Here's a tip, use a lubricant additive in fuel that will counter-act the effects of alcohol gasahol, such as Lucas stabilizer or Marvel Mystery Oil. Not only will it counter-act the corrosive properties of alcohol laced fuel or fuel with ethanol, it provides upper cylinder protection, as well as protection against corrosion of all fuel system components, pumps, carburetors, injectors, regulators, valves, etc. The lubricant even atomizes fuel more precisely for better MPG's, smoother running, less stinky exhaust, lower emissions, and more power. Nuf said......

[Tim Potter]

Post # 17: http://www.ihonlynorth.com/forums/ca...e-stuff-2.html

As far as I know, Michael's determination for failure was never reversed or amended. I tend to trust what the Professor says; however......if you have confidence in JB Weld to hold up for this application, then by all means to each his own. One thing that I know to be consistently true is that everybody's experiences are not the same whether the discussion is of JB Weld or Oil or Paint or fill in the blank, opinions differ vastly on virtually every subject.

I am aware that according to JB's site their Weld and Stick products are completely impervious to gasoline when properly cured. At the same time, the main well of a TQ is thermoplastic resin, not metal. I have read on other sites that JB Weld is not recommended to repair thermoplastic fuel tanks because it will not adhere to the base material. However, this too is hearsay as is most online information. If there is an adhesion problem with thermoplastics perhaps it can be overcome with an etching agent of some kind or some other surface prep. I have not tested this myself nor do I intend to.

It all comes down to whose input is the most trusted; which is the choice of each individual. I trust what Mayben says because he speaks from decades of real world experience, he's analytical and thorough in his processes and.... I've never known him to be wrong.....about anything.......ever.