Permatex 80037 Valve Grinding Compound, 3 oz., White

I used this 3 oz white Permatex 80037 valve grinding compound during my small engine rebuild. It’s perfect for hand lapping valves to clean up minor surface flaws, carbon buildup and light corrosion on valve seats. The abrasive paste spreads easily and maintains consistent grit while grinding. After lapping, I got clean, even sealing marks around every valve face. It works on automotive, motorcycle and marine engines, and even handles chromium components. The tube seals well so the compound won’t dry out quickly between repair jobs. A small amount goes a long way; this tube is enough for multiple engine rebuilds. Way better than generic off-brand lapping paste. If you do your own valve work, this trusted Permatex grinding compound is a must-have in your shop. Highly recommend

These days I’m trying to stretch the life of my old Yamaha instead of replacing it, so I grabbed this valve grinding compound for a top-end refresh. Texture feels gritty but controlled, and it cuts nicely without chewing things up. I could feel the valves seating better as I worked, which was oddly satisfying 😅. Tube size is fine for a home garage, but I do wish the lid sealed tighter. I have a messy workbench in my home studio and it loves to pick up dust. I also found it a bit annoying to clean completely off the parts, so keep some extra rags and cleaner nearby. For the price though, I’m glad I used this instead of paying a shop.

. I grabbed it to freshen up an old air compressor valve that powers our lifting platform cleaners. I smear a thin ring on the valve seat, spin it with a simple suction tool, wipe, then check the seal. Took me about twenty minutes and the compressor stopped leaking and cycling nonstop. That alone made me glad I bought it. The tube is small but it goes a long way because you only need a dab each time. Texture is gritty but spreads smooth. Cap screws on tight so it has not dried out in the cabinet.

Used for the first time since I purchased and I am not disappointed. Works great, easy to clean it off and a left a nice finish.

Grinding compound like this is pretty niche, but it fits my little home studio setup. I do design work in the front room and fix neighbors’ lawn equipment in the back to clear my head. I grabbed this tube to touch up the valves on an old Honda mower I’m rebuilding between logo projects. The grit feels consistent, and it cuts fast enough that I’m not stuck in the garage all night. I just dab a small amount on the valve face, spin it with a suction cup tool, then clean everything with brake cleaner. After a couple of rounds I saw a clean, even contact ring. Hearing that mower finally fire up after weeks of stalling made me really glad I bought this.

Messy packaging, but the paste does what I need. I run a small mower and small engine repair shop and grabbed this to clean up some older valves I did not want to replace yet. The grit cuts fast enough that I am not wasting time between customers, but it is still fine enough that I do not worry about tearing things up. I just dab a little on, spin the valve with my drill, wipe, check the seat, then repeat. Used it on an old pressure washer engine last week and it fired up smoother than it has in years. That startup sound made me pretty glad I bought this stuff 😄

Great stuff, for the money it is worth buy.

Rating: ⭐⭐⭐⭐⭐ The Permatex 80037 Valve Grinding Compound is a reliable and essential product for anyone involved in valve maintenance and engine repair. Pros: 1. Versatile Use: This valve grinding compound is suitable for a wide range of applications, including valve lapping, grinding, and seating. 2. Effective Abrasive: The compound contains a high-quality abrasive that helps in removing burrs, surface defects, and carbon deposits, ensuring optimal valve performance. 3. Easy Application: The user-friendly 3 oz. container makes it easy to apply and control the amount of compound used, preventing wastage. 4. Helps Prevent Leaks: Proper valve maintenance is crucial for preventing leaks and ensuring a tight seal in engines, and this compound aids in achieving that. 5. Trusted Brand: Permatex is a well-respected brand known for producing high-quality automotive maintenance products, providing peace of mind. Cons: 1. Not a Complete Solution: While this valve grinding compound is essential for valve maintenance, it’s just one part of the process. Proper knowledge and tools are required for effective use. In summary, the Permatex 80037 Valve Grinding Compound is an indispensable tool for those involved in engine and valve maintenance. It’s versatile, effective, and easy to apply, helping you achieve proper valve seating and prevent leaks. With Permatex’s reputation for quality, you can trust this compound to deliver consistent results. Keep in mind that it’s a specialized product and requires knowledge of valve maintenance procedures. Highly recommended for automotive enthusiasts and professionals who want to ensure their engine’s valves perform at their best.

Fonctionne très bien

Worked well on my Subaru valves. There is enough in the tube to last me the rest of my life.

Works as intended

Did the trick.

good