|Item Weight||0.085 ounces|
|Product Dimensions||8.2 x 16.5 x 1.5 inches|
|Item model number||4572|
|Is Discontinued By Manufacturer||No|
|Manufacturer Part Number||4572|
|OEM Part Number||4572|
OTC 4572 Large Valve Spring Compressor , black
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- OTC's Large Valve Spring Compressor is designed to quickly and easily compress valve springs on overhead valve engines
- Includes two valve spring adapters, which fit valve spring retainers up to 1 inch (25 mm) and 1-3/16 inches (30 mm)
- Unique, direct action compressor lever gives better visibility of valve spring retainers located in difficult access areas
- Jaw opening of 1-3/8 inches to 5-5/8 inches (35 mm to 142 mm); throat clearance of 5-7/8 inches (150 mm)
- Durable plated finish; high-grade materials ensure quality performance over the lifetime of the tools
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OTC's Large Valve Spring Compressor is designed to quickly and easily compress valve springs on overhead valve engines. Includes two valve spring adapters, which fit valve spring retainers up to 1 inch (25 mm) and 1-3/16 inches (30 mm). Unique, direct action compressor lever gives better visibility of valve spring retainers located in difficult to access areas. Jaw opening of 1-3/8 inches to 5-5/8 inches (35 mm to 142 mm). Throat clearance of 5-7/8 inches (150 mm). Durable plated finish. High-grade materials ensure quality performance over the lifetime of the tools. Value is at the core of the OTC tool and equipment portfolio. For a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it’s a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians’ productivity and shop profits.
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Don't forget to loosen up the valve stem retainer by somehow stopping the valve from opening with something that won't damage it (like a piece of wood or the like) putting a socket a little less than the diameter of the valve spring retainer over the spring and give it some light taps with a hammer - don't go bananas on it, just a few taps to get it loose before trying to use the compressor on it. You'll feel it move when it's loose.
As far as quality is concerned, this is pretty heavy-duty. I can't imagine bending it as long as you make sure to loosen up the spring retainers before you use the compressor on it. And to re-iterate don't try to compress the springs with the handle - it's pointless and even if you manage to do it, it will only hurt your hand and maybe save you like 30 seconds over just turning the T-bar like you're supposed to.
Of course this works perfect to remove springs and of corse your heads must be OUT. There are some arguments here on how to use this. Instructions say to adjust rods such that depressing top handle gives you a snug fit then use the T-bar ob bottom to turn the rod and compress the spring. Do it that way if you have several hours to waste and especially to grind up the top of your valves by the rotating cap on them. It may be necessary to do that for tough springs partly especially if youre a non muscle bound wimp like me. Adjust the top handle always so its about 45 degrees down when you first make contact because the mechanical linkage fights against you from 0-45 and its really hard to push down if handle is upwards when you start, I guess that's why they say turn the rod. But for average springs it easy enough. Built like tank its a vey heavy duty tool which will out last your lifetime.
First, Summit Racing is the absolute best: best people, best service, quick deliveries, everything... For this product (OTC Universal Overhead Valve Spring Compressors 4572), it looks great and seems sound of basic principles when first received, and it seems other folks have had great success on their vehicles, from a 1.9L Passat, to ZX6R motorcycle, to a 2006 VW 2.0... but folks with heavier springs find this tool lacking, as did I. My first use of this tool (today, 9/14/17) is on TFS-30410003-M64 Trick Flow Small-Block Chevy heads. I discovered that I could use the lever for a bit of compression, and then the swivel-screw with slide-rod at the other end to compress the spring further. The problem with this was that, on the 6th spring, the threads failed, and now will no longer spin freely (it actually rolled the threads over inside the nut and now requires a LOT of effort to turn through the damaged area)... Additionally with the tool, the rubber sleeve over the lever slides up and off when being used, even for this short period of time (very annoying to have to keep pushing it back on, especially while in the middle of a 'squeeze'. And last, the steel "semi-cupped" disk that contacts and presses against the valve has a very sharp rim and can potentially mar the valve face.
I believe this tools would do a great job on lighter springs (after all, the video I watched on YouTube featured a pregnant woman using it with ease), but if you have a heavier-spring application, possibly look to the LMS Racing spring compressor also on Summit Racing's website (it is much more expensive, but it's definitely built for the heavier springs -- doesn't include a lever, just the screw to compress the spring -- If only the screw on this OTC unit were of the quality and size of the LMS with a coated surface on the part contacting the valve.)