NA tuning 9000rpm Element Tuning

[Toyota86.ir]

Originally Posted by celek

Head is not the limiting factor it flows around 270CFM at .470 Lift in stock form the head flows fine and with minor work it can make 700+ WHP with a turbo. Bigger valves are a waste in an NA platform. The limiting factors are cams, springs retainers, rockers and the factory intake manifold.

Celek
I follow your build thread , can't wait to see your dyno ?

[zdr93523]

Originally Posted by jsimon7777

Most people will do just great in 25 minute sessions with just a big oil cooler and maybe a radiator. You, however, are some other kind of beast. On a 100+ degree day, all bets are off. I've seen a well-prepped Jackson SC overheat on a 115 degree day.

I've seen a turbo car overheat in 1 lap and Jackson SC cars overheat in 85 degree weather. The blessings of racing at 4000+ feet elevation. The air is so thin it has near zero cooling capacity.

[JustAnEngineer]

How much more power would a built engine with a 9000 rpm redline like this make with a centrifugal supercharger (like JRSC) over a stock engine redline (also with JRSC)?

Ignoring all the peripheral mods required to get this all running. My understanding is that higher rpm would allow you to hit more boost but would it just be marginal? Just curious from a theoretical point.

[why?]

Originally Posted by JustAnEngineer

How much more power would a built engine with a 9000 rpm redline like this make with a centrifugal supercharger (like JRSC) over a stock engine redline (also with JRSC)?

Ignoring all the peripheral mods required to get this all running. My understanding is that higher rpm would allow you to hit more boost but would it just be marginal? Just curious from a theoretical point.

The problem is the mods aren't peripheral. The stock engine can go a bit more without mods but I believe I've read the highest is 8200 or 8300 rpm's before the oil system cannot keep up any more.

If you check out the link to element tuning, they dress up all sorts of fancy parts and the like but then admit they made wholesale changes to the engine to get enough oil into the engine.

A fully built engine is really the only way to hit 9k without the engine being a time bomb, and when you see the prices on that link aka $7400 to really get the power from the revs, is it really worth it to you?