I got a set of Ferrea valves in and I was sitting here comparing them to the stock B16A valves and I noticed that the Ferrea valves had the valve lock groove much lower on the valve stem. This looks like it will effect my Intalled height a fair bit! Is there any reason Ferrea would have the valve lock groove lower? I don't know, any thoughts? Thanks

 

Anyone??

 

you probably have to buy the seat locators and locks and retainers.