Looking to rebuild my head with Supertech valves. I just wanted to see if people prefer the black nitride or the regular Stainless uncoated valves. I read the website and it only says they are both widely used.

Or if you feel there is a better valve add it to the poll.

 

bump for votes

 

If I remember correctly the black nitride are for boost and the SS are for NA. I probably should remember that since I am using the supertechs haha

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dunc &raquo;</TD></TR><TR><TD CLASS="quote">If I remember correctly the black nitride are for boost and the SS are for NA. I probably should remember that since I am using the supertechs haha </TD></TR></TABLE>
I think its the other way around but I dont think it really matters...I use the Nitride ones in my car with lots of boost and no problems.

 

alright sounds good nitride it is then.<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PHDZINE &raquo;</TD></TR><TR><TD CLASS="quote">
I think its the other way around but I dont think it really matters...I use the Nitride ones in my car with lots of boost and no problems.</TD></TR></TABLE>

How much whp and rpms are you running?

 

yep i have a set of the coated ones sitting here at my house ready to go into my boosted LS

 

you want the nitride ones no matter if you are boosted or n/a. i think what you mean is that the flat valves are for n/a and the dished are for boost..

the nitride coating is a hardening treatment that provides less friction than a chromed surface.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bootlegcivic &raquo;</TD></TR><TR><TD CLASS="quote">alright sounds good nitride it is then.

How much whp and rpms are you running?</TD></TR></TABLE>
829WHP and 10,600 RPM

 

yeah hondas crank have the surface of the journal nitrided i believe thats why there excellent.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by quicksilver1689 &raquo;</TD></TR><TR><TD CLASS="quote">yeah hondas crank have the surface of the journal nitrided i believe thats why there excellent.</TD></TR></TABLE>

i dont know about that.. there is no coating on the journals of a crank. they are forged though..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PHDZINE &raquo;</TD></TR><TR><TD CLASS="quote">
829WHP and 10,600 RPM</TD></TR></TABLE>

You're nuts.

 

yeah we all know there forged and balanced pretty well, i remember reading somewhere about the nitrided surface could be wrong, maybe others will chime in.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike93eh2 &raquo;</TD></TR><TR><TD CLASS="quote">you want the nitride ones no matter if you are boosted or n/a. i think what you mean is that the flat valves are for n/a and the dished are for boost..

the nitride coating is a hardening treatment that provides less friction than a chromed surface.</TD></TR></TABLE>

Oh yea...now I remember. I was thinking about the dished/flat difference. Thanks for the reminder