Looking for a little help here. I want to know the proper way to install a woods 4 degree advance key? In the directions that come with the key from woods is a diagram of what it should look like installed in the advanced and retarted positions. It also says that some filing of key may be necassary? Can anyone who has installed one of these please let me know your experience with the installation. I'm going to be running it in the 4 degree advanced position. Thanks
Ed

 

I installed one on my bike did not have to do any filing. It was as simple as removing the stock key and replacing withthe advance key.

 

Would I need a re-tune if the 4 degree key is installed?
Common sense tells me yes but figured I would ask.
Have the TH-7 CAMs and TTS in SE Ultra 110.
Thanks

 

Yep, you do for a good running bike. The difference is the difference between andrews 37 and andrews 54 cams (disregarding the lift). Or in your case it would be similar to installing a set of TW5-6 cams. Try it, ride it, make a decision... if you can even slightly feel the difference, then get it tuned again.

 

I ran that cam with my bike which has about 10.5 or so compression. Ran very well. What does your bike have?
Course I can see where you might want low and mid Rpm's. You will get this with 4 degree advance.
Just wondering.

 

I'm running a woods tw-408g7 and the tuner who tuned (dyno) my bike was the one who recomended me putting in the 4 degree advance he said when I asked if I would need to retune the bike (dyno) he said I shouldn't. He said it would bump the compression (5 to 10 psi) a little and move it to the left a little (500 or 600rpm's) I am running a thundermax though so maybe that has something to do with the retune? Thanks to the response of the install I was just wondering about the key and positioning it in the cam gear and best way to put it in.
Ed

 

I got mixed up on this thread I guess.

With my bike now I have the Woods TW400-6.
Running about 10.5 compression as said.
Talked to Bob Woods when ordering this cam. He said the 400 was what I wanted.

These cams are very similar to each other. Lift is the main difference with a little difference in intake closing.

Even though the heads were set for the 400 cam I had the 408 in mind.

With the 7H (intake closing @40) torque was in, nice and good, at 1600 RPM with my setup and tuning. I could go into 6th gear then if I wanted and it would pull easy.

Put in the 400 (intake closing @42) as originally setup and there was a small change in tuning. The torque moved about 200 RPM to the right.

I would think the 408, almost the same as the other two and almosr exactly the same as the 400 except the intake closing @ 44 degrees instead of 42.

So I would expect the torque to move to the right, say to 2000 RPM, in stock form.

The 408 has a higher revving potential, I would think and less casual putting around potential.
So a 4 degree would be something that might work if you didn't need so much high RPM. Actually with that lift you will still have a very strong engine at almost any RPM.

and as your tunner said very miner tuning change. Maybe beef up the low end areas some.