Well this may be a noob question but I haven't been able to find anything searching the forums. Well nothing that answers the question with any facts, or reasons why it spools more quickly. I mean obviously I know a big giant turbo will spool later than a smaller turbo, but what can you do to make a giant turbo spool more quickly?

What factors affect a turbo's rate of spool. Or when it starts to fully boost. I know airflow plays a factor, the size of the turbo and wheels, ball bearings, ect ect.

So, what can you do to make a motor/turbo that'll spool as quick as possible?

Any insight would be great.

Again looking more for why a turbo will spool quicker rather than just a dyno plot of a fp red spooling quicker than a GT42R...

 

ported ex mani, ported head, bigger intercooler, uicp+licp, larger o2 housing, ported head, all of these helps the turbo to spool more quickly.

 

How? I mean more air flows through, but is that all it is?

 

What about a ball bearing turbo vs not...

 

Get some more air flowing towards the intake.

Check for leaks.

 

less psi wga

 

buy a different turbo that spools faster

 

All but the bigger intercooler. A bigger intercooler will increase cooling efficiency, but you're going to see some type of reduction in spool.

 

That's not quite what I am looking for. Same turbo, what can you do to make it spool more quickly.

 

anything a bit more technical than more air. Or is it really just that simple...

 

Bigger FMIC will reduce spool-up.

MIVEC helps spool, high ramp rate cams increas spool and most of what has alrady been said. Anti-lag helps too Reduce backpressure = increas spool

Mikey

 

The answer I believe you are looking for, deals w/ changing the way exhaust flows from the cylinder.
[LIST][*]Twin Scroll Turbo[*]smaller hotside(turbine housing)[*]smaller exhaust manifold (diameter & or runners) [*]cams & tune

note: twin scroll is the only solution that does not affect the total power out put of the turbo. I hope this helps.

 

ok maybe this is another dumb question, but, how does a twin scroll better use the exhaust flow from the cylinder?

Is this the same way say a jet engine using 2 stages in the turbine section as opposed to 1 is more effecient and creates more power?

Which turbos are twin scroll as opposed to not twin scroll.

 

large volumes of air that are moving fast...

Make the most amount of air move the fastest... that is what will spool a turbo quick.


Smaller turbos, larger exhaust manifolds, better flowing manifolds, ball bearing turbos vs journal bearing.... etc etc etc...... the list goes on...

 

EGT's and cam profile.