SBC CHEVY 1.6 7/16 RACE SERIES ROLLER ROCKER ARMS FULL SET OF 16. THE BEST HIGH PERFORMANCE RACING ROCKER ARMS MANUFACTURED IN THE USA. Black oxide coated steel parts.950 lift and 950 lbs of open spring pressure. Clear 1.625 valve springs. Micropolished surfaces finish for maximum durability. Anodized for additional protection and aesthetics. Sting the competition with Scorpion Race Series roller rocker arms. First, these fine Scorpion rocker arms are 100 percent made in the USA. Second, they're precision-crafted by high-tech manufacturing methods, and then fully CNC-machined. Race rockers offer more clearance for retainers and springs. For a great finish to these superior rockers, the surfaces are micro-polished for maximum durability and anodized for additional protection, plus killer looks.
Sting, but don't get stung with lesser quality; if you want more speed and are passionate about American-made high performance, bolt on a set of Scorpion Race series roller rocker arms. If youve read our warning on engine builders using low grade no-name rods and cranks, a very similar situation exists in the roller rocker market. We do not use or sell off-shore, (no-name) roller rockers, period. They have proven to be faulty in many ways.
The center trunnions are not polished, nor is the center of the roller tip true to size or polished. Metal fragments are often left inside the trunnion housing and will cause destruction of the needle bearings. The aluminum alloys used are never aircraft aluminum alloys as are used in all USA made roller rockers. They often mention the alloy as being 6061, and that is a very soft form of aluminum. The 6061 alloy used on these will assure rocker-flex on any higher than stock spring pressures, and this will affect performance.
The pins and keepers that hold the parts together are often of poor quality and improperly installed. The front roller will usually scoot along the valve tip, as it can't roll properly due to rough internal surfaces. We have honestly seen valve tips that were scalloped out due to the front roller dragging across them. This will cause the valves to side-load against the valve guides in the heads and surely cause damage to them if run like this for very long. We have scrutinized these products in the past and found all of the above problems, and I can tell you there are most likely many more.
We would not use them in an engine under any circumstances. You will also see many of these rockers made from stainless on the market. They use a very low grade stainless that actually has a near non-existent amount of nickel in them, but that's not the real problem with them, as stainless steel has no advantage over high grade heat treated steel when it comes to a roller rocker. The lack of hardness of the rocker body is the real problem.The problems with these stainless rockers are the same as mentioned above. They are pure junk, in our honest opinion. They could possibly be used on a budget back yard stock build up that has a very low spring pressure, with a cam that has very low lift, but then you would be better off with the stock stamped rockers on such a build. We have heard of many engines using these rockers that came apart and spilled needle bearings into the engine, only to end up in the oil pump.
It seems like some engine builders do not care how long the parts in your engine last, or they simply don't know this. I can tell you for sure that using such low grade, "no-name" roller rockers is asking for trouble.
We use Scorpion, Comp Ultra Pro Magnum, and Comp Gold Arc rockers in all of our engines. The difference in these compared to the low grade no-name rockers on the market is huge. Do a Google search on this subject and you will know then what were talking about.Our sales staff has limited technical knowledge on this product and are usually unable to answer many of the questions asked. Many of the questions are, "how do you install this item", and "what pre-load to set them at". Opinions vary on this to a great degree, but anywhere between a 1/2 turn and up to a 3/4 turn seems to be the minimum and maximum. We update the info in our listings on a regular basis, and if it's not in the ad, then there's a good chance our sales staff does not know the answer. There is a solution to this for those with numerous questions about the product.
We recommend searching the car forums for technical info. You will find the answers you need on the forums for certain. For those needing help on installing these, you can go to YouTube find dozens of highly informative videos showing much of the info you need. We are not responsible for collateral damage caused by the use of this product.
The RGA number must be included on the return label. Even though you may have explained the problem to us, and been granted permission to return the product, we must have a written explanation and a contact number included with the product. It is also recommended that you include the name of the person from our company that you have been in contact with. Following these guidelines will make the return process work as it should.
If you are in a 3 day zone, and your package leaves on a Thursday, you should receive it on the following Tuesday. The item "SBC CHEVY SCORPION ALUMINUM RACE SERIES ROLLER ROCKERS 1.6 7/16 # SCP-1003" is in sale since Wednesday, December 28, 2016. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Rocker Arms & Parts". The seller is "skipwhite" and is located in Kingsport, Tennessee.This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Saint kitts and nevis, Saint lucia, Barbados, Brunei darussalam, Bolivia, Ecuador, Iceland, Jordan, Cayman islands, Sri lanka, Martinique, Nicaragua, Oman, Peru, Pakistan, Paraguay, Viet nam, Uruguay.