At What Point Would I Need Titanium Retainers and SS Valves?

[spadepro22]

Thinking about a motor rebuild and want to know at what power level will titanium and ss valves be needed? I plan on going with manley springs and kelford 264s.

 

[bastarddsm]

What turbo are you gonna run..... Makes a big difference on where your going to need to rev it to.

If your on a 14b/16g manley spring would probably be fine if you didn't run into coil-bind, because it wouldn't be make any power over 6200, so why rev it 8000? But if your gonna run a bigger turbo you'll need to rev it higher to get the most out of your power band, and I'd defiantly upgrade the springs from the Manley's.


IMHO, for your goals the Kelfords and Manley are a waste of money. You'd be better off running stock and spending the money on other parts of your setup. (better ic, meth kit, ect) The cam's and intake have a very small effect on the overall power your setup can produce.

FWIW, I run stock valves with kiggly street behives and DKS272's and a garbage home made intake. I shift at 9k. On the HY35 at 35psi it made peak power of 604whp at 7k, at 9k it was still making 550, yet my cams are weak sauce and my intake sucks...Cam's and intake don't matter all that much.

 

[Diamond Star Werks]

...Cam's and intake don't matter all that much.

This is a bogus claim really unless you've actually tried better cams and intake to deem them not necessary. Go back to stock cams and intake and tell me where your power level falls.

You will see a good change in your power curve.

While your right you can make good power with stock components or mild upgrades. Cams and intake(piping and manifold) play a good role in giving you a fatter power curve and where you see your peaks(torque & hp).

 

[rhamlinii]

What turbo are you gonna run..... Makes a big difference on where your going to need to rev it to.

If your on a 14b/16g manley spring would probably be fine if you didn't run into coil-bind, because it wouldn't be make any power over 6200, so why rev it 8000? But if your gonna run a bigger turbo you'll need to rev it higher to get the most out of your power band, and I'd defiantly upgrade the springs from the Manley's.


IMHO, for your goals the Kelfords and Manley are a waste of money. You'd be better off running stock and spending the money on other parts of your setup. (better ic, meth kit, ect) The cam's and intake have a very small effect on the overall power your setup can produce.

FWIW, I run stock valves with kiggly street behives and DKS272's and a garbage home made intake. I shift at 9k. On the HY35 at 35psi it made peak power of 604whp at 7k, at 9k it was still making 550, yet my cams are weak sauce and my intake sucks...Cam's and intake don't matter all that much.

Overall airflow should be your 1st decision in any turbocharged engine. I disagree with you. Cams, head flow, and intake design contribute alot to peak torgue and VE as rpm increases. If anything, from the information you shared. In my opinion you may benefit more from a change in a intake manifold and cams unless you maxed out the turbo at 7000 rpm.