I wouldn't use JB weld in something like that if my life depended on it! Pros use splash zone for a reason!! JBweld will come loose fairly easily and doesn't like dealing with fuel at all......If they are aluminum, why not just weld them up and reshape the port the way you want?

 

I repaired a cracked 289 head (ported super thin and cracked in the top of the bowl of an intake port) with JB weld. Actually drilled a hole between the valve stems and sealed it from the water jacket side as well as a thin layer along the crack on the interior of the port. Tapped the hole, installed a plug and it was was run (daily driver for a lot of it) for 10-12 years without issue. Still good as far as I know.

Also repaired an aluminum head where I got over aggressive opening up a pushrod pinch. 10-12 years on that and is still fine.

A LOT goes into the application. Plus, I didn't have it smeared on 1/4" thick. Was a thin application. Zero issues with JB Weld.

 

Anyone on here ever use Belzona? I cant compare it to splash zone but its 100 times better than JB. Just 100 times as expensive lol

 

I used splashzone, recommended by a few people on here. It was about 6-7 years ago. Used urethane clear coat over the epoxy as recommended for use with methanol/alcohol. Still holding on as if applied yesterday. Engine has been run on race gas the last few years.

 

so is there a shelf life on splash zone?I have part A &B thatI never opened it is about 2 years old so is the epoxy still useable?? thanks for all the replies

 

Are there any date codes on the cans you have? I would call the tech dept at the Manufacturer and ask them. Usually the catalyst loses potency over time and may not achieve full strength or delayed cure times. Intake ports are probably not the best place to experiment with out of code epoxies.

 

I used it in the marine industry and had it around for years and never had a issue with it.Was stored in a cool dark closet.Tom

 

You should let a Pro handle this for you...

 

If it's only 2 years old it will still be good.

 

I have 2 x 3kg cans of it in the beer fridge at work.....bought in 2013, still good

 

We used it on a top winning pro stock head. Splash zone is the best their is for now. If we had some left over we made fake turds with it.

 

Splash Zone has been the standard for 25 plus years. It's somewhat moldable as well. Where JB tends to be more liquid.

 

So many questions I get on epoxy. So THIS is what "I" do! Others may be different.

1. I use a burr and rough up where I want it.
2. I usually drill holes or add stakes for it to grab.
3. I wipe it down with Acetone.
4. I mix Splash Zone that same amounts. Black and Yellow turns green.
5. I use cold water as hot makes it even more stickey to the hands.
6. I apply it with my finger using water to shape.
7. The next day I work the epoxy with a cartridge roll
8. After I'm finished with shape, I wipe it down with Acetone.
9. I use Devcon 2-Ton clear to seal it, getting the edges.
10. I apply this with my finger.
11. Dries hard and last a long time.

I have had excellent luck with these products. I have shape entire heads and blocks with it. Alcohol or E85 will eat it. You have to keep an eye on it. I have some heads with race fuel that have decades on them with no issues!

 

I've used Super Glue as a sealer in the past as well.

 

I use fuel tank sealer from POR15 overtop the Splashzone. Have some running with alky that have had no issues for 10-12 years now. Its even a silver-aluminumish color though it does yellow some overtime, seemingly from heat cycles more so than fuel.

 

How did the wings work out for you JP? I dont think I have ever seen a head slow down with them in there as long as they were done right.