Good day,

I'm working on my 2007 SE and have a question about reusing valve springs. The car has just over 200K miles so I'm working on it to take care of some issues. I removed the heads to clean them up, replace valve seals, check the valves etc. Looking at all 24 valve springs, about half of them appear to be in good shape, no physical damage, spring height on spec, the springs aren't compressed or leaning. I haven't been able to check the compression, but everything else looks good. My question is if I take 12 of the used springs and reinstall in 1 head and buy 12 new springs for the other head, are there any issues with doing that? Will the engine run properly? I'd like to fix up the car and keep it going as long as I can but don't want to spend a ton of money. It would be nice if I had all the dough I needed to fix it up right.

Just looking for your opinion. It makes sense to me not to mix old & new valves in the same cylinder head, but maybe it will work if one head has new valves and the other all used valves?

Looking forward to anyone's input, thanks!

 

Hard to say,though generally you dont want to mix and match parts.

Id either go all new or stay all old.

 

Thanks, I'm going to buy all new springs.