Advancing Timing

[platinumnj]

Has anyone advanced there timing on there 04's to make the car go faster or quicker... if so please leave some feedback on how exactly to do it and what gains have you made upon doing so.... thanks :)

[Gregster]

From what i read, this is impossible/hard to do. The CVVT continuously adjusts timing, and any timing cam sprocket would be useless.

Gregster

[yamaha]

Depending on the engine type, the non cvvt will be able to advance or retard timing, but anyhting with the cvvt head will be impossible.

[bfgoedeke]

On the 04 and up models, the computer advances the intake up to 20 degrees. Because of this forced induction presents some problems because of the overlap. As to advancing the cams, don't do it. Its self-defeating on the CVVT engines. Unless you disconnect the system, or replace it with a non-CVVT head.( Which would be the case if you are planing to run a balls-to-the-wall turbo system.)

[FordFasteRR]

it seems like we are back to square one with the differences between spark (ignition timing) advance and Cam timing.

These are 2 completely independent processes...

A: Ignition Timing (spark advance).

This is computer controlled, the ecu fires the spark plug usually 10-30 or more crank degrees before top dead center on the compression stroke of each cylinder.... Timing is sensed mainly from the crank position sensor on the front of the block next to the oil pressure sensor. There are a few backup sensors that can take over the function of the crank position sensor in case it malfunctions, and that would be the cam position sensor but this would put the car into limp mode and it will not run right. Ignition modification is virtually impossible without some kind of ecu-reprogramming or a really fancy in-line timing control module which is available but expensive and hard to program.

B: Cam timing.

This has to do with the position of the cam shafts in relation to the crank ... this is electronically variable on all 04+ cvvt models and only affects the intake cam. (it seems strange since the cvvt solenoid is actually mounted on the exhaust cam side of the cylinder head, it makes no difference since the actuator only affects the intake cam via the drive chain on the drivers side of the engine beneath the valve cover. Cam timing adjustments have a big effect on torque. Adjusting the cams can give your more bottom-end torque by advancing them.. the effect is known as " dynamic compression" ... by adjusting the cams, you alter the dynamic compression and this modifies the compression the cylinder makes ... retarding the cams was always thought of as being good for top end power, however our motors don't rev high enough to gain from retarding the cams... Based on my dyno testing, advancing the cams (both of them) will give you some torque gain.. ( I gained about 5 ft. lb by advancing the cams). To do this you will need to buy an adjustable cam sprocket. Be aware, the size of the cam sprocket is different from the 01-03 and cvvt models. they are NOT interchangeable.

=)

[soullesselantra]

now THATS what i call informative...good job Ford

[FordFasteRR]

now THATS what i call informative...good job Ford


What more could you ask for ? LOL

[DAILLESTWUN]

Just be careful when adjusting your cam gear. you might make a mistake an dblow your motor or something...lol

[FordFasteRR]

Just be careful when adjusting your cam gear. you might make a mistake an dblow your motor or something...lol


KABOOM !!!!!!!!!

[bfgoedeke]

I thought I gave a decent answer. I came directly off a Hyundai tech update between the 03 and 04........LOL