BC 272/272's Sound Clip

[Shane2GSX]

Cams sound clip. Car is dirty and running rich.
http://s19.photobucket.com/albums/b158/ShaneW700/Stock GSX/?action=view&current=shanew2.flv

Someone on a non-DSM site made the comment that it "sounded" out of time. I hope not, going to check it again this weekend. I've had probs with it ever since installing the cams. It runs rich, has low vacuum (5-10 at 1100 rpm) and idle surges.

 

[Shane2GSX]

If your still having probs, I would def make sure your timing marks are completely perfect.

Something still isn't right with mine, but I dont' think it's timing. I'm getting a P0300, random misfire here and there and every once in a while at idle I can hear the car missing. So idk what's up with that. I've rotated the CAS 180* and the CEL hasn't came back yet, but I can still hear it missing.

I regapped my plugs from .33 to .28 as well. If it comes back, I'll prob replace plugs and wires..

 

[steel_3d]

Did you look at the pics of the timing marks? Does it look bad to you? There's no way to get it any closer. It's less than half a tooth off on only one gear as far as I can tell. If I skip a tooth anywhere it'll just get worse. I tried when the engine was on the stand. The adjustments I've made account for more than half a tooth. Each tooth I believe is 7.5 degrees. It's possible that I need more adjustment still.

However, the car feels slower than before. Unless I'm tripping. I'll have to compare some logs. So I probably don't wanna go any further, in fact I might want some overlap back once (if) I pass smog.

 

[Shane2GSX]

Yeah, it was really hard to tell from the pics I saw if the marks were low enough. They may line up, but not be low enough. I know now how important it is to ensure it's perfectly even with the top of the head.

 

[steel_3d]

That's what the straight edge is for When all 4 line up, due to the laws of geometry, they can't be too high or too low. There's exactly one configuration to make that happen. Since 3 of mine line up and only one is slightly off, I feel ok. According to the ruler the intake was already slightly retarded, and I retarded it a shitload more to make it idle better. And/or the exhaust was slightly advanced, and I advanced it a shitload more anyway. So I don't think my timing belt configuration is hurting me, in fact it helped get a bit more adjustment.

Can someone see anything clearly wrong?

 

[steel_3d]

The good news is that I ALMOST passed smog today. Idle HC was a bit over the limit (112 vs 100). That should be easy to fix though, maybe with a little timing or leaning it out just a bit (right now the o2 sensor's got control of it and cycling correctly).