Valve help pleas

[rat-sack]

i have a naturally aspirated EJ25D and i'm doing a compleat performance rebuild and i want to do a valve job. what's the best size to go with that will still leave me open for a turbo later on and still give me maximum performance with stage 3 cams?

[Huffer]

I don't know about "size" but I sure hope you have engine management lined up for stage 3 cams. You're building a race motor with stage 3 type hardware.

Anyway, here's some info from TWE for you on valve jobs:
http://www.techworkseng.com/Services/Va ... hining.htm (http://www.techworkseng.com/Services/Valve_Seat_Machining.htm)

[rat-sack]

that brings up another question, is there anything i can do temperaraly with the stock ecu untill i can find time and money to get and install a new ecu? or do i have to wait to do the cam job?

[Huffer]

Stage 3 cams will not allow your car to idle like a street car. You'll probably need EM with Stage 2 cams.

Best to do the entire thing at once, along with a tune.

[rat-sack]

are stage 3 cams going to eliminate street driving?

[decke48]

are stage 3 cams going to eliminate street driving?
mostlikely. i know you need to standalone to have them run right
and for valves. stock size is fine. Ferrea make proformance valve for the N/A ej25d. stock size or +1mm. the stock valves are fine, if you want you can get them coat for high comp or turbo. but unless you going for major boost (28psi+) or CR 12.5:1+ stock valves should be good

[rat-sack]

stand alone :smt017

[rat-sack]

sorry, i'm truly new to this and i have an outback legy with spun berrings so i thought what better way to learn than to squeez all that i can out of it in the rebuild?

[decke48]

stand alone :smt017
programable engine management ECU.

[rat-sack]

okay, got it, thank you. (engine control unit right?)

[decke48]

yes

[rat-sack]

one last question, N/A?

[d1giPhux]

N/A = Non-Aspirated (engine)

usually referring to 'all motor' or engines without turbo / forced induction.

[99gtlimited]

so you're gonna do this build yourself?

you need to do some serious reading if that is the case. Good luck!

[rat-sack]

yeah, i'm doing it by my self and i have done lots of reading and still reading. anyway, i am going to do a +1mm dish face valve set but i don't really know where to find that for an EJ25D. can anyone help me here?

[decke48]

contact ferrea racing 1-888 733-2505 or ferrea@ferrea.com
http://www.ferrea.com/general-results.p ... ry_id=6078 (http://www.ferrea.com/general-results.php?company_id=100631&category_id=6078)
scroll down to ej25d 96-98 choose what size you want. see if you can order threw them or one of there dealers

[rat-sack]

thanks a bill for your help. i'll let you know where i get. :smt024