Great product at an excellent price.
These valves are beautiful. It's almost a shame to put them in my cylinder heads. I didn't have to grind them down at all. They were already within spec according to my micrometer. ZZP never disappoints. I have spent thousands in car parts from ZZP, and EVERY single part is flawless and works great. Thank you ZZP. Thank you also Turbo Tim. You are a wizard with a programmer.
Great value and durability
I’ve been using them for around 10k miles on a turbo engine and they have been great with no guide wear compared with other valves in this price range.
Valves are good
Nice valves, but now I have to replace my XPZ cam, after problems with L7 lifters (replaced by ZZ) damaged my cam, under 1500km
Good value valves
A close inspection of the valve stem the surface finish feels better than some stainless valves of similar price,they are going in shortened iron guides with .534" lift and it's got a turbo too so how resistant they are to galling time will tell.
Excellent quality items as always from zzp