OEMTOOLS 25220 Overhead Valve Spring Compressor Tool, Removes Valve Spring Keepers and Springs Without Removing Cylinder Heads, Automotive Valve Spring Compressor

it did the job. I had to replace 6 valve seals on my cylinder head as part of a rebuild. Had to remove the springs first. These are some stout springs that could really hurt a guy. The inverted U part of the device is a bit wide so I fit a washer under it to guarantee it wouldn't slip off the springs top hat. Otherwise it did the job. I did add oil to the compression screw to make it easier to turn. The rod that goes through the top hole as a handle doesn't have a keeper on either end, so it can slip out, so I used a ratchet and 14mm deep socket to turn it. I tried other methods to get those springs off. They were dangerous with no success. So good purchase.

Works alright, had to bend the inner ears to fit top of spring but does the job.

So, this ended up being the only thing that reliably worked for changing the valve springs on my 2014 Ford F250 truck (side note: people, when reviewing automotive tools, please list the make/model of your vehicle; "it works for me" on a 1997 Mazda Miata is almost useless for a 2014 Ford truck). I bought a grand total of three different spring compressors for this valve spring/seal job: this one, another one with angled jaws, and a similar angle-jaw one from Harbor Freight.This has flat jaws -- not tapered, which is important, because tapered jaws grip the spring better. HOWEVER, all of the tapered jaws tools had too shallow of a "throat" (basically, how much you can compress the spring) to be effective. They would rarely compress the spring enough to remove the keepers, and would NEVER compress the spring enough to reinstall the keepers.This tool is maddening: it will slip off the spring again, and again, and again, and again (side note: wear gloves -- a strong spring springing into your finger hurts like a... well, it hurts. At the wrong angle, it might break your finger). The only thing to do is just keep trying. I suppose I could grind a bevel onto the jaws with a die grinder or something.When it finally catches, it will compress the spring enough to remove the keepers, but even here be careful, because if you jostle it too much while removing the keepers you might knock it loose. I swore a LOT doing this job.Downside of this tool (aside from the non-beveled jaws) is that the whole apparatus is a little "floppy" (you'll see when you use it), which can make getting a straight-on compression kinda hard. A plus side is that you can remove the manual turn bar and turn this with a ratchet, which I HIGHLY recommend, if you have space. I wish more compressors did this!If I ever have to do valve springs with the cylinder heads on again (please, god, no), I may buy one of the bar/lever compressors (search here, you'll find them) since I saw them used in a YouTube video -- the setup looked like a pain, but once mounted, it made the actual removal/install look painless.Bottom line is: this tool will work, but be prepared for a long, frustrating, and sometimes painful repair job.

The price is cheap, so is the tool. Lasted for 8 spring compressions then wasn't useable after that.

Works great as advertised, the only thing I do is probably overkill on the side of safety, once I got the spring collapsed, I put a tywrap around the arms to ensure they didn’t pop off.

It works…. Need strong wrists if using for a v8, there is no port for a ratchet attachment

Good

No lo he probado