I did a search but turned up nothing. What is the best valvetrain for a gsr motor with turbo pushing over 400hp? I plan to have the motor daily driven but with occasional track runs.

Thanks JOHN

 

ferrea valvesprings,retainers, stock size or maybe .5 over size valves with undercut stems . itr cams....thats wht im gonna use...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2.2Lcivic &raquo;</TD></TR><TR><TD CLASS="quote">ferrea valvesprings,retainers, stock size or maybe .5 over size valves with undercut stems . itr cams....thats wht im gonna use...</TD></TR></TABLE>

That's exactly what I have had in my car for over 2 years now and to me it's the best. One night , after leaving the club, I just punched it going down the freeway and while trying to race a bike I bounced off my rev limeter in 5th gear twice. My heart stopped, and everything held up great. This was on 11lbs of boost. It's not cheap as Crower, and not to knock Crower, but do a search and see what feedback yo get on there valve train.
Ferrea

 

sig

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbo Si &raquo;</TD></TR><TR><TD CLASS="quote">

One night , after leaving the club, I just punched it going down the freeway and while trying to race a bike I bounced off my rev limeter in 5th gear twice. My heart stopped, and everything held up great. This was on 11lbs of boost. </TD></TR></TABLE>


Bouncing off your rev limiter TWICE in 5th ..... the joys of living in the mid west I suppose.

what the **** MPH is that anyway goddamn!

 

From what I have been reading that ferrera was the way to go. Should the valves be dished for the turbo setup? As well are we talking SS valves and if so will they last without having to get new bronze guides?

 

Ive always read on here that the GSR cams are better for turbo than the ITR ones? I dont know for sure but thats just what ive read off of HT. Ive also heard great things about ferrea. Good luck.

 

as far as itr vs gsr, good question.. i would like to see dyno results with the same car and jsut a simple cam swap with no other variables.

yes. ss valves..id try to run a "flat" valve..i think it would help the combustion chamber to have a "smoother" roof. i am no profesional, thats jsut my opinion.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by T-sohctec &raquo;</TD></TR><TR><TD CLASS="quote">


Bouncing off your rev limiter TWICE in 5th ..... the joys of living in the mid west I suppose.

what the **** MPH is that anyway goddamn!</TD></TR></TABLE>

They say your speedometer is not accurate past 100mph, mine was past the 140mph mark when I ran out of gear so I would like to assume 145mph?

 

I am going to be running the gsr cams with my setup. Thanks for info appreciate it

 

keep us posted on how it turns out.

 

Do you know where I could get these at a good price? I will keep yall informed


THANKS JOHN

 

ebay

 

Yea theres always ebay and even check the classifieds here cause theres a lot of people goin with skunk2's now. Good luck with the setup.

 

I went with the following.

Port Flow inner valve springs
ITR outer valve springs
Port Flow titanium retainers

If I were to buy valves they would be .5 oversized Ferrea valves with bronze valve guides. Good luck.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by madmatt &raquo;</TD></TR><TR><TD CLASS="quote">Ive always read on here that the GSR cams are better for turbo than the ITR ones? I dont know for sure but thats just what ive read off of HT. Ive also heard great things about ferrea. Good luck. </TD></TR></TABLE>


i believe this is b/c gsr cams have less overlap. correct me if im wrong.

 

Yea i think it does have something to do with the gsr cams having less overlap. Thanks. I know ive read it on here. I dont know if the search is up again or what, just look around.

 

Yea I will keep looking on here for some

thanks yall for the info

 

Hey if I get .5 oversized valves will that effect the driveability of the motor or will it just allow the head to flow more?

 

wont effect drivability, and head will flow more...i guess it might make a slight differance on low end when crusing, but that is not why you are making your car fast...so i wouldnt worry about it

 

Cool Thanks man

 

I will be running stock ITR valvetrain on my setup. The only thing I might change is to Ti retainers.

 

What kinda of boost u runnin?