Lisle 21700 Wrinkle Band Ring Compressor

Worked perfectly for installing new pistons and rings in my Briggs and Stratton Vanguard engine. Make sure to coat all parts and the compressor with SAE30 engine oil first before use, otherwise it will be difficult to use.

Perfect experience, to be honest, I had previously purchased a different ring compressor system, and after slicing my finger and failing to even get the first piston halfway in, I jumped on Amazon and bought this one. Thing worked like a charm for my 5.3 Pistons.And it didn't feel like a throw away tool, like the first one I bought. I know if I ever need this tool again I can pull it out of the bottom of my toolbox and have no worries about it working.If I had to complain about one thing it's that the size selection bit can sometimes work it's way out when you are trying to get the tool on the piston, but it was so little of an inconvenience, and sometimes actually convenient, that I cannot knock them.Usage recommendation:Cover it and the Pistons with assembly lube, put the tool on loose, where it's barely compressing the rings, then use the dial to tighten it up, then make sure to push the tool flat against the block before trying to install the piston.At this point use your hand to push the piston in or like I did knock it in with the plastic handle of a deadblow mallet. You don't need much force but you do need speed, to get the whole piston in.

This is a run of the mill ring compressor, with a slight wrinkle band at the bottom, which I've noticed makes installing pistons a little easier. It is a spring loaded slip-clutch design, which will eventually wear out, but will last longer, and grip better than a sprag clutch design (the teeth wear out on those).The wrinkle banding is a plus for sure, as I was able to install CVH pistons more easily than with an antique compressor. The tool also comes with its own square-drive wrench, and is an odd size. The problem with this: it's much easier to use a 1/4" drive ratchet (as other ring compressors have that I've seen), and the wrench piece itself feels a little short for the amount of torque required. The upside: the metal doesn't flex and bend under greater torque amounts, and an open-ended wrench can be used if needed.I used this to install a set of 3.23" diameter Ford CVH pistons, and cast rings. Nothing bound, and the rings didn't suddenly pop out of the compressor and stick on the block deck. It's a good tool for a good price, and as always, Amazon shipped it very quickly.

Worked great on my 2.5” piston.

I had one of these for years, and used it every few. I must have loaned it to someone, because I couldn't find it when i needed it recently. No problem - I bought another. And it is exactly like my old one. It's a simple device, made to last - just be careful who you loan it to!

Broke quickly in a small engine shop but would work well for home. Was not as easy to use as the pliers type band compressors. If you are going to do more than 4 or 5 small engine rebuilds in your lifetime get the pliers band type compressors. you can even get them in sizes that cover auto and outdoor power equipment in the same kit.

Good strong sturdy tool to compress piston rings. Very cheap price. Quick shipping

I used this for a rebuild on my 1200 cc, 4 cylinder sportbike. I bought 2 of them since #1 and #4 are on their compression stroke at the same time, and likewise #2 and #3. Unlike the car motors I’ve rebuilt, where you drop the pistons into the block and tighten the connecting rods from the underside, the rod ends aren’t accessible from underneath so you have to install the rods/pistons on the crank 1st and drop the cylinder block on top of them. It was a big pain. I set these to the correct diameter and had to cut the extra length off because the clearances are so tight that the surplus length was scraping the engine case, but that’s not the fault of this tool. I read how people said it scraped up their pistons so I made sure to lube both piston and tool with oil and didn’t see any scrapes.The tool worked fine. I needed one that would come apart after the piston was in the block and this did the trick.