Which one people? Take into consideration that I am using stock ctr cams.

From now on I want to exclude the jdm itr valvatrain. So vote from rocket motorsports and down


Modified by alloysr16s at 6:15 PM 3/3/2005


Modified by alloysr16s at 6:15 PM 3/3/2005


Modified by alloysr16s at 4:12 PM 3/4/2005

 

ITRs should be just fine. Which cams do you plan on using? If you're just using stock B16/GSR cams the GSR valvetrain will work fine as well.

 

depends on the lift of your cams right?

 

7200 RPM is not alot. you can run any stock valvetrain and you should be fine.

If you're using higher lift cams, you'll be revving higher anyway and that will require aftermarket valvetrain

 

My opinion is that stock valvetrain should NEVER be used for any perf. app. regardless of your fuel cut-off. There is NO safety margin.

Mis-shifts (mechanical over-rev's) don't abide by the fuel cutt off point.

 

i voted for rocket so i couldnt post a new option, but i would throw omni in there.

omni and rocket are good aftermarket options in my opinion

 

Any stock valvetrain should do. That's below the stock RPM limit.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rocket &raquo;</TD></TR><TR><TD CLASS="quote">My opinion is that stock valvetrain should NEVER be used for any perf. app. regardless of your fuel cut-off. There is NO safety margin.
</TD></TR></TABLE>

I agree that in perf. applic. that valvetrain should be upgraded.

But in this case 7200 is even way below stock rev limit. I dont see why stock valvetrain is not sufficient enough.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rocket &raquo;</TD></TR><TR><TD CLASS="quote">
Mis-shifts (mechanical over-rev's) don't abide by the fuel cutt off point.</TD></TR></TABLE>

If this was the case, then even stock cars should have upgraded valvetrain.

 

They should have upgraded valvetrain.

Just like they should have upgraded clutches.

These are the week points of the all OE set-ups.

You wanna do a 3rd to 2nd but meant to go to 4th gear mis-shift with stock springs?

Also rev limit is not the only thing to look at. More HP per cylinder will require more spring.

GURU TIME

As a cylinder fires, does the crank speed up? If it fires harder will it speed up faster? And if the crank accelerates faster will the cams accelerate faster?

Does lightening the flywheel and main pulley affect this.

Hmm. Very important things to ponder about for 5 mins.

More fun terminology

1) Position
2) Speed 1st derivateve of postion / time
3) Acceleration 2nd derivative of position / time
3) Jerk 3rd derivative of position / time
4) Snap 4th derivative of postion / time

Things to think about for a couple of years.

 

Of course its always a good point to upgrade valvetrain in any performance application.

If a guy came to our shop and wanted an intake and exhaust. and he plans to jus have a fast performing street car with those bolt ons. I'm not going to immediately say you have to upgrade valvetrain, rod bolts, Motec engine management, sleeve the block, get better rods, etc.

What I'm trying to say is it all depends on what you are planning to use the car for.
I was assuming the setup isnt planned for high hp, high stress racing situations. its only to 7200rpm.

 

Just my opinion / philosophy on things.

Not trying to make you agree. Just stating why I say what I say.

 

How much power is eaten up from the friction increase of a stiffer spring....is it relative?

 

I understand you Robert, If customers had endless pockets, then I would highly recommend certain things so they can complete their setup. Even if they dont, I would give some recommendations for certain upgrades to help strengten the motor.

If I did that to everyone, they'll all be scared to fix up their car since alot of things have to be done. heheh.

 

How much is the going rate to for springs and installation of springs while the motor is in the car?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rocket &raquo;</TD></TR><TR><TD CLASS="quote">How much is the going rate to for springs and installation of springs while the motor is in the car?</TD></TR></TABLE>

We wont even do it that way.
but then again, we dont work on cars anymore.

 

i am using ctr cams

 

What is the difference between the Gen 1 and 2 . I am using Ctr cams. It doesnt matter price because they cost the same ( from what someone offered me)


I got an offer of 238.99 shipped of gen 1 or 2 springs and retainers. Is there anyone who can beat that

 

G1 springs have 95lbs on the seat and 265 at 0.500" lift

G2 springs have 55lbs on the seat and 185lbs at 0.500 lift.

I would do the G2 springs for CTR cams.

 

ARE YOUR GEN2 RETAINERS TITANIUM?

 

Yes.