im putting new cams in my sr20 next week and i know how to do cams in this motor but i saw someone use a little wooden wedge to keep tension on chain, and i dont know what exactly they did with the wedge becuase it was just some pics online. what method do you guys use to keep tension when just swapping out cams?

 

The most important thing is that you keep the chain from falling off, and that the cams stay indexed on the chain the right way. You can put a zip tie or something like that around the chain to keep it from falling off. I haven't seen the wedge thing, but I'm guessing it's probably stuck between the outside of the chain sprocket and something else so that the chain can't slide off when it goes slack.
If you're unbolting the cam sprockets from the cams, and then swapping cams, put a heavyish zip tie through a hole in the sprocket and around the chain, to the sprocket is held securely and can't skip teeth on the chain. It's usually really easy..
Disclaimer: I haven't done SR20 cams, but they look pretty damn similar to everything else.

 

You could also put 2 screwdrivers through each pulley to keep them from falling along with the zip ties.

 

also, Pm Eugene, he is a master of his craft with 240s, and sr's

 

thanks this is the idea i was looking for. i know to ziptie the chain i just wasnt sure the best way to keep tension.