High Temp Exhaust Manifold Sealant Recommendations?

Exactly! A little goes a long way. Too much can create a mess and cause leaks. Just a thin, even layer is all you need.

Feels like I’m about to unleash a mad scientist with all this talk of sealants! Can’t wait to try it out and hopefully not create a disaster in my garage.

Just remember, if it does go wrong, we’re here to laugh with you, vross. At least you’ll have a fun story to tell!

6 Likes

Seriously though, after applying the sealant, make sure you torque the bolts to spec in the right sequence! It’s crucial for a proper seal and helps avoid leaks.

6 Likes

I’ve had major issues with leaks after using high temp sealants. It’s crucial to prep the surface well; any grime can lead to improper adhesion. Has anyone else faced this?

Absolutely, surface preparation is key! I’ve found that a good degreaser can make a world of difference.

I usually go for RTV silicone sealant, but I’ve faced adhesion problems too. Has anyone tried applying it in different temperatures?

7 Likes

Great point! I’ve actually found that applying it at cooler temps helps cure better for some brands. Anyone else noticed this?

I once had to redo my whole manifold because of a leak. It was so frustrating! Just remember to let the sealant cure fully before heating up the engine.

Same here! Waiting for the cure can feel like torture, but it’s worth it. What’s the longest anyone’s waited?

I’ve waited a full 24 hours before firing her up just to be safe! But who knew exhaust sealant could be such a drama queen? Haha!

1 Like

Lol! Right? But seriously, has anyone tried solvent-based sealants? I’ve heard mixed reviews.

4 Likes

I used a solvent-based sealant once, and it was a nightmare! The leak started the next day. Stick to RTV if you can, much more reliable.

5 Likes

Exactly! I think some sealants just don’t hold up to extreme heat. What about brand recommendations?

For brands, I always lean toward Permatex or Loctite. They’ve served me well without leaks. Anyone else with a favorite?