How To Set Timing On 2.2 Ecotec
General Motors' inline 4-cylinder Ecotec line of engines has gained a true cult following. Powering a plethora of compact and midsize sedans and SUVs these stout and affordable powerplants have made their way into the performance market place in a big way. Offered in a number of different incarnations over the years and platforms, Ecotecs come in 2 displacements, 2.two and 2.iv-liters, and can be equipped with bespoke features unremarkably reserved for high end or exotic engines, such as direct injection and Variable Valve Timing (VVT) systems.
The Ecotec has become an engine of choice for donor-project transplants. Their affordability and huge production numbers ways they are plentiful and inexpensive foundations for desert racing, road racing, and elevate racing applications. Aftermarket back up for these meaty GM four-pot engines has come up in a tidal wave every bit a new generation of enthusiast culture welcomes them into the fold.
In this video, Cody Smith of Cloyes Gear and Products walks us through the timing and balance-shaft concatenation service on a non VVT example of GM'southward Ecotec. Fooling around with the timing chains or belts in an interference engine can be a nerve racking task, especially when it comes to turning the key later on your handy piece of work is consummate.
To ensure your pistons and valves don't play musical chairs, Smith points the states in the direction to ensure all the camshafts and gears remain indexed correctly. With the engine ready at TDC for cylinder number one, the tear-down commences. A systematic process, Smith doesn't simply jump in and kickoff turning wrenches resulting in a pile of hardware and gears.
Upon removing the cam gear from the frazzle camshaft, it is important to remember that some hardware is unmarried use. "When yous remove this bolt — it is a torque-to-yield bolt, you'll become a new one in the kit — simply throw it away," Smith casually instructs. Disconnected from the camshaft one might expect the gear to shimmy off the shaft with ease simply valve spring overlap will forbid this operation — a little clockwise pressure unloads the gear/cam interface.
Moving into the timing chain case, the drive sprockets, tensioners, and guides are removed with care to go on track of their original location and any woodruff keys that index the gears. Installation of new chains is made easy by link color coding that intuitively refers to intake and exhaust balance-shaft bulldoze.
Ane of the concluding decisions you will encounter when replacing your timing chain assembly in the Ecotec will be the type of timing chain tensioner you employ. Co-ordinate to Smith, "GM had a few different designs over the years — what you are going to become out of the Cloyes kit is the latest design. The tensioner must be installed in the deactivated state."
The principal timing chain tensioner installs simply in the side of the cylinder head, and is activated with pressure practical to the chain bearing against the tensioner — the deactivated piston volition pop out and go on the chain lash in spec. With a last step of torque hardware to the factory specs the service is consummate.
With a step past step guide clearly illustrating the procedure, servicing the timing system of your Ecotec need not be a frightening task. If you lot are embarking on this sort of projection and accept further questions requite Cloyes a telephone call.
How To Set Timing On 2.2 Ecotec,
Source: https://www.enginelabs.com/news/video-gm-ecotec-2-2-timing-install-with-cloyes/
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