I agree. With the precise control we need in our motors a mediocre cam will not suffice. On a 20 year old SOHC, sure, there is not as tight a margin for error.RsxJai said:Eh I say you know what you're getting into when you're buying the cams anyways. A few pictures doesn't determine how well cams are made. Are the machines the same ones they use in the US? Are the materials the same? The only real problem is quality control, which can't be told just from a few pictures. And GMSII said it very nicely. At least no one came in here trying to say domestic cars aren't as reliable and are built in the U.S as an counter argument to all the China/Taiwan judgement.
I can only imagine how hard quality control is, I have a hard enough time trying to call back to the states to talk to my family, imagine trying to get ahold of the guy running a business in another country.
QC has not changed overnight from the D and B-series motors, it is the same, we just see it now with the K.
I know of a handful of K motors that have destructed due to cams. Whether it was a bad batch, or just a couple that slipped through the cracks, who knows.
The point is what measures are in place to prevent this from happening.
What is in place to create true core repeatability?
Are the cores cut in the states or is that outsourced as well?
Maintenance on these machines?
There are plenty of ways to make a cam stronger, V8 guys just make the journals bigger to reduce deflection. We do not have that luxory. We have to improve on the physical properties of the material the blank will be made of and the goemetric repeatability of the lobes.
This reminds me of Tyler Durden on Fight Club talking about the A+B+C=X formula for a recall on a vehicle