I have been searching for info on a solid head setup for FI. I have a burnt exhaust valve and will be getting a new head with stock valves and springs. Before I drop it on I want to do the necessary upgrades to rev to 10k or so and just stregthen the top end. What do you guys have/suggest as far as Ti springs retainers valves and the like. Thanks.

 

Brian Crower
Toda
Eibach
Blox
Ferrea
Skunk2
jun Racing
Supertech.

What company has been proven or are they all pretty strict as far as tolerances.

 

inlinepro

 

Stock. Just run some good springs and retainers. I run Supertech. I have run Crower and Ferrea in the past with success as well.

 

im running supertech valves, retainers, springs here

 

Cool. I'm not going to port the head as I don't really want to dump 2k+ into it right now but 5-600 will be ok.

 

You don't need to port these heads. A waste of money if you are FI, IMO. If 600whp is your goal it can be easily obtained with a stock head and some springs and retainers, and a good turbo kit/ engine management.

 

A proven source of increased power when ported correctly. You don't need it but if you want that extra 10% or more.......

Factory intake springs all around are a good choice if you go with ti retainers or light weight valves.

 

how much does it cost to have a head ported?

 

Depends on who is porting it.
I would go with Ferrera or Supertech.