I've been going through archived topics, and I'm having a hard time getting a straight answer. In a B16a with Skunk2 Stage 1's, where I've seen dyno charts of them making power to 9,000, will ITR valve springs and retainers hold up? What about ITR valve springs and titanium retainers? Or would it be a good idea and just get the Skunk2 valve springs and titanium retainers? I think I already know the answer to the question, but I just wanted to know what ITR springs and retainers can take.

 

stock springs are good to 9200-9300

 

itr outer valve springs with portflow inners work really well i've heard.

 

that's what i'm goin for..

 

i would go that high, imena , you wont be making bpower up there anyways. i would say to take it up to about 8500

 

8500 my ***

 

I used to rev my ITR valvetrain in my b16 to 8800 all day, never had any probs..

 

revved my b16 with itr valvetrain and itr cams to shifts at 9300 and through the traps at 9400 rpms....clutch spun before any valvetrain damage and now the head on another motor.

 

So a lot of you guys are running ITR outer valve springs and Portflow inners? What kind of retainers are you using. I've heard things that titanium retainers wear fast or something like that, anyone wanna give me the nitty gritty on retainers? I don't think I'd be going over 9200, so could I use ITR retainers?