I found some threads from a few years ago with MWR recommending upgraded springs and others claiming that upgraded springs without upgraded valves will actually cause an increased incidence of dropped stock valves. I don't plan to regularly rev over 8,000 or set a higher redline.
In short: What's the general opinion on running MWR or Eibach springs with stock valves? Will it help or hurt, and are the milder springs (MWR/Eibach) really less likely to break stock valves than the Ferreas?
~$300-$600 for a set of new springs and the Toyotool is good cheap insurance, especially since I could re-shim to avoid camshaft wipe issues at the same time. $2000+ and R+Ring the head for a full valve job pushes me closer to waiting, making sure I get enough track time to justify it, and springing for a full build with a professionally done head down the road.
In short: What's the general opinion on running MWR or Eibach springs with stock valves? Will it help or hurt, and are the milder springs (MWR/Eibach) really less likely to break stock valves than the Ferreas?
~$300-$600 for a set of new springs and the Toyotool is good cheap insurance, especially since I could re-shim to avoid camshaft wipe issues at the same time. $2000+ and R+Ring the head for a full valve job pushes me closer to waiting, making sure I get enough track time to justify it, and springing for a full build with a professionally done head down the road.