Establishing a redline?

[ShawnS]

I am about to get my 2.4 Turbo engine build up underway soon and needed to know something. How do you establish a redline when using upgraded internals, new cams, new valve train, etc...? When using new parts, I would assume you could push the engine further than stock. Just curious on how one would determine redline after these mods.

[sperry]

I'd hope the person/shop doing the work would know. If you're doing it yourself, I'd suggest getting some books or something on the topic, and then finding someone that knows what they're doing. :lol:

If you're buying a kit, there are prolly some recomendations you can get from other people that have installed that kit.

[dayofpain]

I am about to get my 2.4 Turbo engine build up underway soon and needed to know something. How do you establish a redline when using upgraded internals, new cams, new valve train, etc...? When using new parts, I would assume you could push the engine further than stock. Just curious on how one would determine redline after these mods.

the camshafts determine the redline. cams will be good from (a)rpm to (b)rpm. after that they will stop making power. youll want to set the spark cut off a little after "redline".

[AtomicLabMonkey]

Well the primary purpose of the redline isn't to just put an RPM limit after the point at which the engine makes its max. power... it's so you don't literally blow up the engine. Push the engine beyond a certain speed and a piston will bang into a valve, resulting in lots of little pieces everywhere in what's left of the motor. So, you want to establish a redline RPM at least slightly under that. As for how to calculate it, you got me. :lol: .. Like Scott said, talk to reputable engine builders and see if they have a common way of figuring it out (that they'd be willing to share).