eman930

Hey guys, So Im in the middle of making some repairs and part of that is doing a t-belt job and fixing the damaged cam collar that was installed on my car, While doing this im gonna play with some cam timing, I purchased 2 and 4 degree offset woodruff keys. Im gonna go with the 4 and see what happens.. also if Im correct turning the camshaft counterclock wise advances cam timing right? Anyway Feel free to add any info or correct anything

Tedro951

What is your desired outcome?

eman930

More power, Its proven to give some more HP in the NA's, I wanna see what it will do in the 951, Im thinking it might help spool time, and give some more mid range power

blown 944

To advance the "cam" it needs to be turned clockwise in relation to the cam gear. Judging by your diagram, you may have the drawing reversed.

Rogue_Ant

Sid is correct. Keep your cam gear "in-place", and rotate the camshaft clockwise to advance the cam.
So, your cam-key needs to be flipped from the picture, and then installed.

zerMATT951

Where does a person buy offset cam keys?

Joshua, didn't you have good low-end and spool results with a 3 degree advance in your turbo?

Rogue_Ant

I have cam-keys. I got them from 928motorsports.

Yes, after seeing & feeling the results in my 944NA, I immediately went out and adjusted the 951. Advancing the timing picked-up low-end power, and made boost come on a little sooner. Definitely noticeable.

eman930

So wait.. Keeping the cam in place and turning the gear counterclockwise wouldn't that advance the cam? Which way does the cam spin when the engine is running, isn't it spinning clockwise?

Josh how Bad was the performance drop off at higher RPM? I'm thinking it won't be so bad as boost would kinda makeup for it

Rogue_Ant

Well, yes you could rotate the gear counter-clockwise while keeping the cam in the same spot - that would also advance the cam (assuming you re-timed the motor correctly).

It just depends on how you look at it. In the end, you want the cam-gear to line up to the timing marks correctly, and the camshaft to be advanced clockwise, hence advancing the cam.

I don't notice any drop-off in higher RPM. Really I've never seen an 8-valve engine that doesn't peak by 6000rpm anyway. These engines are just not built for high-rpm.

eman930

So basically You saw no draw back from advancing the camshaft?

Rogue_Ant

For the majority, nope I don't see a draw-back.

MM951

Hey Josh, what are ya getting for the cam keys?

eman930

$38 plus shipping

http://www.928motorsports.com/parts/...aft_keyset.php

Rogue_Ant

Yep, the link fast924S posted is where I get them.

eman930

I like fine tuning and making adjustments ill post how it all feels when done