Retarding a cam What does it do on a 212cc??
- Thread starter SoFloMiniBikez
- Start date
Skipping a tooth on the cam gear would make a huge difference in cam timing, enough to make the engine run worse than before. What most people do on Hondas, clones, and Preds is they twist the gear on the crankshaft. It's only held on there by a weak interference fit. A little heat and torque and it'll move.
Retarding the cam will give you more top-end power at the expense of bottom-end torque. Advancing a cam will do the exact opposite. As far as I know, the stock cam is already a very retarded cam so retarding it more won't do much. The stock cam would need much more duration for retarding to help, hence the aftermarket cams.
Retarding the cam will give you more top-end power at the expense of bottom-end torque. Advancing a cam will do the exact opposite. As far as I know, the stock cam is already a very retarded cam so retarding it more won't do much. The stock cam would need much more duration for retarding to help, hence the aftermarket cams.
Nice irony you got there.
What I said refers to the gear that is on the crankshaft. It is a light press-fit on the crankshaft. If you heat it up a bit, you can turn it on the crankshaft. There is a tool out there to do it correctly but it's wayy too expensive($189.99) Home rigory can do it just as well.:thumbsup:
What [MENTION=43506]trinik7597[/MENTION] said is to buy a billet aftermarket cam. This way you would be able to turn the gear on the cam. The gear on these cams bolts on to the camshaft. The gear can have slots or different holes to adjust timing. Be aware that these cams are a bit more expensive and you would loose the compression release. You could say goodbye to your pull-starter if you're running high compression.
The billet cam idea came from an old flathead trick. Builders used to torch the stock cam red hot between the cam gear and the closest lobe and physically twist the cam in a vise.
Hope this cleared up the confusion.:thumbsup:
What I said refers to the gear that is on the crankshaft. It is a light press-fit on the crankshaft. If you heat it up a bit, you can turn it on the crankshaft. There is a tool out there to do it correctly but it's wayy too expensive($189.99) Home rigory can do it just as well.:thumbsup:
What [MENTION=43506]trinik7597[/MENTION] said is to buy a billet aftermarket cam. This way you would be able to turn the gear on the cam. The gear on these cams bolts on to the camshaft. The gear can have slots or different holes to adjust timing. Be aware that these cams are a bit more expensive and you would loose the compression release. You could say goodbye to your pull-starter if you're running high compression.
The billet cam idea came from an old flathead trick. Builders used to torch the stock cam red hot between the cam gear and the closest lobe and physically twist the cam in a vise.
Hope this cleared up the confusion.:thumbsup:
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Here's a tool kit that will help with the twisting of the cam gear on the crank...
Tool, Crank Cam Gear Twister [KW-Twist] - $179.99 : Kart Works Canada , Online Store
Tool, Crank Cam Gear Twister [KW-Twist] - $179.99 : Kart Works Canada , Online Store