I am very excited to see how they perform in real test and that, um, is going to be my engine. But honestly, if a quality of a part could be determined by the looks only, this one wins. I mean just look at it
The stock part is pretty much a block of ugly casted steel, a block of metal, which is not even simmetrical in some places. The other ones on the other hand look like this.
Here is some info on cold forging. When it comes to the performance parts, it is a middle link between casts, and CNC machined parts.
More information on cold forging: HERE
How FORGINGS compare to Castings (from here)
Forgings are stronger. Casting cannot obtain the strengthening effects of hot and cold working. Forging surpasses casting in predictable strength properties - producing superior strength that is assured, part to part.
Forging refines defects from cast ingots or continuous cast bar. A casting has neither grain flow nor directional strength and the process cannot prevent formation of certain metallurgical defects. Preworking forge stock produces a grain flow oriented in directions requiring maximum strength. Dendritic structures, alloy segregation's and like imperfections are refined in forging.
These valve followers are also 3 grams lighter (49 grams) when compared to the 52 grams of a stock unit. This may not seem much, but it does make a difference when the part is changing its speed and direction of movement several times a second. Reduced innertia will reduce chances of a valve float, where the follower did not return to its proper position, and repositioned causing major damage to the cylinder head (Efrain's engine)
My engine should be up and running by this coming weekend. I will post more opinions on the followers once the new cylinder head brakes in.
The followers will be available shorty, as I will have a stock of them coming, once they prove to perform under heavy engine loads of modified motor.
Will keep you posted on this.
