cooking the grenade

[MOSES!]

is their a way to change the grenade time when you hold the grenade for a couple seconds it explode faster

[AfterDune]

No. You can only change the throwing strength by using the right mouse button, but you can't cook it.

[Senshi]

As if PR players needed any more ways to accidentally suicide / teamkill with grenades.

[Vista]

You used to be able to cook a lot of things

[QuickLoad]

you can however;
russian RGO: detonates on impact(also refuses to detonate on some maps)
throw from farther distance: less sizzle upon contact and faster detonation