Where is the tensioner on a cam sprocket?
Idler assembly sold seperately (#12057-001HP) CAM CHAIN TENSIONER GUIDE This is the guide in the back of the block that the tensioner pushes against. Racers know that the stock guide is always breaking or the rubber gets torn up by the chain.
When to replace the cam chain on a Moto?
When I set the plunger with the old chain installed the ninth tooth was engaged on the plunger. Observations like this can be used to gauge cam chain wear and to determine when the chain should be replaced. Every engine will have specific marks designed into components to aid in the timing of the engine.
What kind of sprockets are used for CAMS?
APE manufactures the original “billet” adjustable cam sprockets. APE sprockets are necessary for precise cam timing to achieve maximum performance.
How many pins between sprockets on twin cam engine?
I like to span around 6 – 8 pins between the sprockets on a twin cam engine. Unicam engines are trickier and the number of pins you can measure is usually less. It is important to try and measure across multiple pins because the variation between new and old chain measurements will be more pronounced this way.
What should timing be for worn cam chain?
First, with the worn chain installed I checked the cam timing. Then I installed the new chain and rechecked the timing. In the table below you can see the intake cam timing was retarded by 6.625° and the exhaust by 9.50° when compared to the new cam chain timing values.
How to tell when chain and sprockets need to be replaced?
Another, much easier way to check for a worn chain is to try to pull the chain away from the rear of the sprocket on the rear wheel. If the chain is worn, you’ll reveal about half a tooth of the sprocket. A new chain will wrap around the sprocket snugly and won’t pull away.
Idler assembly sold seperately (#12057-001HP) CAM CHAIN TENSIONER GUIDE This is the guide in the back of the block that the tensioner pushes against. Racers know that the stock guide is always breaking or the rubber gets torn up by the chain.
APE manufactures the original “billet” adjustable cam sprockets. APE sprockets are necessary for precise cam timing to achieve maximum performance.