Webcams 294s, Need Fresh Information Please Options

[6G96GT]

I went and ordered the 294s setup for my cams. Paid little over 700 bucks with shipping. The guy said I didn't need stiffer springs but I think I do. Any comments on that? Also, I (shop did it) went and ported and polished my cyl-head both in the combustion chamber and exhaust side. I bought a new exhaust mani and ported it too. I did buy a SAFC II but haven't installed it yet. I also will be picking up a hi-flow cat from my brother soon. I already have a SRI and Performance Muffler.

Should I get a metal head gasket for the cyl head install? Does it matter for my setup? What should I do after the cams are bolted in? The SAFC should take care of the tune right? Is there anything else I should've done or should do still?

Thanks!

[Batman722]

do you have any idea how to tune ?

[presure2]

you dont need stiffer springs.
dustin has had the 294's for quite a while now with no issues.

if your planning on turboing, do the MLS, but be sure you have the mating surfaces properly decked to ensure a good seal.
while the cams are out are a good time to do valve seals, the cam seal too.

[DEATH]

You obviously don't need to take out the head to do the cams but if you do for whatever else there is no excuse not to put an MHG back. There is a reason why Toyota switched to MHG's on the 5S from stock [besides common sense that is] and with today's price you'd be fool not to.

Presure - How much time does Batman spend at 7K RPMs? If our OP here is prone to bounce off the Rev limiter [especially in first where the most back resistance is shoved back up the drivetrain - yeah I know - not so much the cams - but by transfer through the Tbelt there is at least some increased resistance] it might be a good idea to go with stronger springs. Can 5s's go shimless buckets too?
OP - I don't think with my wallet I think with the mindset "Only the absolute best parts for my Celica" - so you might want to keep my comments in perspective

This post has been edited by DEATH: Jul 5, 2008 - 9:44 AM

[presure2]

You obviously don't need to take out the head to do the cams but if you do for whatever else there is no excuse not to put an MHG back. There is a reason why Toyota switched to MHG's on the 5S from stock [besides common sense that is] and with today's price you'd be fool not to.

Presure - How much time does Batman spend at 7K RPMs? If our OP here is prone to bounce off the Rev limiter [especially in first where the most back resistance is shoved back up the drivetrain - yeah I know - not so much the cams - but by transfer through the Tbelt there is at least some increased resistance] it might be a good idea to go with stronger springs. Can 5s's go shimless buckets too?
OP - I don't think with my wallet I think with the mindset "Only the absolute best parts for my Celica" - so you might want to keep my comments in perspective

@ 7k? none.
redline is 6200.
RPM's are not the problem when it comes to the springs. its the "ramp" of the lobes on the cam, and how much lift there is, where issues will arise.
too much lift, and you will get coil bind, but thats not an issue with these cams, and the ramp of the lobes is fairly mild, so that is not an issue either.
why spend $ there, when you can use that somewhere else where it is needed.

[DEATH]

Cool I learn something new with most of your reply's. Are newer 5S's equipped with a higher rev limiter then?

[6G96GT]

thanks for the input gentlemen. I cannot tune...no clue, but my buddy owns a tuning shop...ballisticmotorsports, so he can do all that.



This post has been edited by 6G96GT: Jul 17, 2008 - 4:50 PM

[delusionz]

thanks for the input gentlemen. I cannot tune...no clue, but my buddy owns a tuning shop...ballisticmotorsports, so he can do all that.

You'll need a wideband o2 sensor in your exhaust, a way to read it either through your SAFC-II or a voltmeter and some dyno or track time.

There's plenty of articles all over the net regarding o2 sensor voltage to a/f ratio correlations and ideal a/f ratios to aim for when tuning for whatever purpose you're looking for whether it be stoichiometric 100% burn or richening to prevent detonation under load

This post has been edited by delusionz: Jul 17, 2008 - 7:20 PM