Toyota 4AGE AE86 Corolla Levin Adjustable Cam Gears Cam Pulley
Toyota 4AGE AE86 Corolla Levin
While the aftermarket is ripe with adjustable cam gears, don't
assume that all cam gears are the same. Variations in material,
design, anodizing, and other engineering deviations can affect
It's important to note that adjustable cam gears have no direct
effect on the duration and lift of the valves, that's the job of
the camshaft lobes (profile) as dictated by the cam manufacturer.
If the intake valves open at 10 degrees before top dead center
(TDC) and close at 190 degrees after TDC, the total duration is 200
degrees. The opening and closing times can be shifted with
adjustable cam gears to rotate the cam ahead a little as it spins.
For example, if we advance the intake cam 5 degrees then the inlet
valves would open 5 degrees earlier. The intake open timing would
shift to 15 degrees BTDC and the intake valve would also close
earlier by the same 5 degrees. In the example above, the valve
timing would be IO at 15 degrees BTDC and IC at 185 degrees ABDC.
With SOHC engines the cam timing events for intake and exhaust
occur together so intake and exhaust events move the same amount.
Retarding timing works just the opposite.
Basically, the job of the camshaft is to open and close the intake
and exhaust valves at the "proper time" relative to engine position
(piston travel) - to charge the combustion chamber and expel burnt
However, once you've bolted on performance parts, milled the head
or installed a lumpy performance cam, you also alter the optimum
cam timing that most sport compacts prefer. What can you do?
Super Lightweight Duralumin
Duralumin was chosen for its lightweight properties and extra
strength and durability. Both the outer and inner part is made from
Duralumin to ensure that the product is the strongest available on
Precision & Perfection
The pulley and inner plate are made from billet aluminum. The
pulley gear part has been designed and manufactured from precision
methods to guarantee reliability with securing the drive from the
Made with 6061-T6 Billet Aluminum Material
CNC-Machined Heavy-Duty Durable Light Weight Design
Direct Bolt-On Replacement for Stock Gears with Perfect Fitting
True Laser-Etched Markings on the Leading Edge of the Gear allow
for Quick, and Accurate Adjustments
100% Brand New
Professional Installer is Highly Recommended (No Instruction
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