Another member on this board with a 5th gen 5spd is getting some parts and a mechanic to retard his timing. I'de like to do the same, but I'm thinking my automatic won't show any difference, since the ECU controls my shifts. Am I correct in my thinking?

 

Hmmmm questions:
1) How is he gonna retard the cam timing without the use of adjustable sprockets? Stock cams ususally have provisions to account for chain stretch but I can't see how this would really help him too much.
2) Why retard and not advance? How did he come to the conclusion that retarding the cam timing would do anything?
3) Which cam is he adjusting? Exhaust or intake?
4) I hope he has a dyno to confirm if it really does anything.

 

Who is this "other member"?

(+1)

 

I've only heard this story from bbmax572 (the other member). He didn't say whether it was retarding or advancing, intake or exhause. My best guess was to say retarding the exhaust, so that's why it was posted. Not sure what it entails, or if there is dyno'd proof, but then again, I'm not the guinee pig, bbmax572 is. My main question is that if it works for him, and he can squeeze a few hundred more RPM's out of his 5th gen, then would an automatic, who is unable to "actually" redline his RPM's, be able to take advantage of this?

Jeff, you've just gotta love all this cam "nonsence" that I'm spreading around lately, huh?

 

What post frenzy? He only has one post total! I assume you emailed him or what not?

 

I can "actually" redline my automagic whenever I feel the
need. No big deal. Of course, with a 4th gen, there's no power up there anyway.


::sigh:: At least I dont drive a GLE...

 

You can jump a tooth.

How many teeth are there on the Maxima cam sprocket? Divide that number into 360 and youll have your advance or retard amount in degrees. (i.e. 40 teeth means each tooth is 9 degrees. If you move one tooth on such a sprocket in the direction of normal rotation, the cam will be advanced 9 degrees. The other way would obviously then represent retarding. )

Retard = top end power
Advance=low end power


Me too. It will shift the powerband for sure, but whther it make the car faster or not is a different story.

 

He's a friend that I work with. He doesn't frequent the board since I give him the answer to most of his questions anyways. I keep you guys posted on any dyno results, but this still doesn't answer my question. The ECU controls my auto shift under WOT. If I could get a few hundred more RPMs from some cam adjustment, how would I reap the benefits of it? I'm guessing that I'll need a tuned ECU.

 

Hey thanks for the tech tip!

Frenzy, I have a spare intake sprocket(vtc assembly) at home. I'll take madman's advice and count the teeth and let you what I come up with. I hope it has more than 42 teeth becuase 8-9 degrees just for one tooth is quite a bit for one adjustment. My VTC assemblies adjust a total of 8 degrees but only in certain situations(ie.. high end)

 

 

He said that his mechanic is going to advance the timing for greater power down low. Did you try it yet, Jeff?

 

Ah poop. Sorry Frenzy. I was changing my oil before B-Ball and I stared right at the thing! I'll count the teeth tonight.