In the case of tuned engine, the heat and mechanical load by high rotation is very much rather than stock. Stock valve guide may damage.The JUN Racing Valve Guide is improved its strength and heat conduction by using raw material, phosphorus-bronze. This therefore avoid the any damage from high rotation of tuned engine.
In the cast iron valve guide, we kept quality but cheaper than stock valve guide which is rather expensive lately. We recommend our valve guides when you overhaul your cylinder head.
We prepared two kind of valve guide. One is a strengthening part made of the PBB which is suitable for the tuning engine. One more is the valve guide made of cast iron which is same as stock specification.
Material is made of PBB - Phosphor Bronze
WARNING: Cancer and Reproductive Harm
Jun is widely recognized in the automotive world as a Japanese tuner and has created some of the fastest sports compact cars in the 90s. Originally, the company started in 1946 manufacturing engine parts for the internal combustion engine. Today, after more than 70 years in the business, JUN has consistently provided high-performance parts and has turned ordinary vehicles into fast and reliable performance street machines.
JUN Auto has actively participated in races in Japan. During the 90s, they have participated in the All Japan GT Cup, which is considered as one of the most prestigious events in Japan. They did not only race in Japan but went all over the world, conquering the salt lake flats in the US and races in Hockenheimring in Europe. Using the experience they got from joining these races, they were able to translate it into their products, creating parts that could bring out the best in any vehicle.
The company has grown since it first started in Japan. Its popularity has gone worldwide that they established branches all over the world, creating, JUN AUTO Thailand and JUN USA. They have also participated in auto shows from different countries showcasing their products. Some of these shows are SEMA in the US and Tokyo Auto Salon in Japan.
If you are in search of quality performance parts that are proven both on the streets, in car shows and on the track, then JUN Auto is the brand for you. They specialize in internal engine upgrades but also offer external pieces and aero kits as well. Visit Vivid Racing and check out the list of their products that would fit your specific needs.
Lunati Dual Valve Spring W/ Damper - 1.639" O.D., 1.125" Coil Bind, 640 Lbs./In. Spring Rate Set of 16