I just purchased ferrea dual springs and retainers. I am curious if I can run .5mm oversized valves without changing piston size.

Second question is considering I went with Ferrea should I get ferrea valves and valve guides or can I go with a BC valve and ferrea guides?

 

Chris and Ya, at Inline have had more experience with all of these parts than anyone else.

 

Chris



Ya

anybody

 

www.inlinepro.com
Call them. They should be able to help.

 

if I recall correctly, my machine shop had told me that you can run:

.5mm over on the intake
1mm over on the exhaust

without having to change anything else.

 

ChefJ,

If you are on the stock bore size, over size valves "might" hurt overall performance, cause you generally shroud some of the combustion chamber.

I personally would stay standard size, unless going bigger bore from factory bore size.

You can run whatever guides, as long as they are installed properly. Also, getting springs and retainers, make SURE you get the new seat bases for the aftermarket dual valves springs. Most places sell it as an option, but its required on the F20's and K20's. If you don't you can and will break a spring.

Ya

 

^ where could I find the seat bases for Ferreas dual spring setup? I just want to get everything purchased now so I can drop it off at the Machine shop and start my tear down.

 

Did you buy the set from me?, if so I included the seats.

 

^ The set that someone had posted on here linked to ebay. Yea that was me.

 

dished or flat valves for turbo setuo?? I am reading most go with a dished setup. Will supertech work with the ferrea springs?? Ya shoot me some pricing on this stuff. I would prefer to go through you guys then hp freaks or any other website.