[bg_bls]

I have a 98TT BPU auto and I just installed cam gears. I set them at -3 Exhaust and +1 Intake until I can get it to the dyno. But now my idle is about 200RPM lower than before and it is a little lumpy. Is this normal for cam gears or did I mess up something??? Any ideas??

Thanks in advance,
Brian

 

[parboy]

It's normal.

 

[bg_bls]

Whew, that makes me feel better. I thought I screwed up big time.

Thanks

 

[aznsupra]

i have just an exh cam, set at -3, and it idles normal.

 

[bg_bls]

Is there anyone else out there who can clear this up for me??

 

[Bill P]

Cam gears can make the idle a little rough, but I have never heard of the idle droping as much as 200 rpm's for only -3 degrees exhaust. I have mine set at -4, +1 and only suffer a very slight difference in idle. Since all aftermarket cams gears are different it is best to dyno tune them for max results. I remember a post not long ago saying each aftermarket cam gear could be off by as much as 6 degrees.

Bill P

 

[bg_bls]

It is more like 100-150RPM's, but it kinda bounces up and down so it is hard to tell. I will try to get to a dyno soon and get them dialed in. Thanks for everyone's help.

- Brian

 

[Guest]

If cam gears can really be 6 degrees off.. which are the most accurate?

HKS?