I have a question for Shiv (or any of the cognoscenti).... For the '05 MR stage 0 (XEDE and cat back exhaust), what is the ideal cam timing? I'm thinking about adjusting the cam gears but retain the stock cams....... Please advise me soon, I need to take action soon if I'm to try this....

Thanks

 

bump...

 

looking at your chart
you have two arrows
one on the right hand side and one on the left hand side

by looking at your stock Cam gear you will see a white dot
let's assume the one on the right hand side is where the white dot is
by skipping one tooth and replace the left arrow towards where the white dot is at
your retarding the timing -5 degress

hope this will help
I just learned it too !

 

The stock cam gear has a dowel hole rotated 5 degrees CCW from the timing mark on the edge of the cam gear (right on the center of a tooth). The white dot is roughly placed on the same side off center as the locating dowel hole. I think the best angle should be 9 degrees CCW off the center mark. Skipping one tooth one way or the other would result in either a 2.5 degree of dvance (CW) or 12.5 degree of retardation(CCW). Those settings would not be good........ Again, I ask the cognoscenti to opine on the subject and explicate if they can

 

bump

 

Hey, guys, how about some input on this? I'd really like to know what the angle should be for the optimum amount of cam timing, please help me here.

 

stage 1(v360) cam gears are set to -5/-5 with stock cams

 

Is this using the Vishnu cam gears? I understand that the Vishnu gears are made so the vernier indicates 0/0 in reference to the pulley mark..... If this is the case, then the -5/-5 is exactly what the stock cam gears are set to......... I had thought that the ideal cam retard for these cars was an additional -4 degrees of retard, which would translate to a total of -9 degrees for the location of the locating dowel in relation to the timing mark in the top of the camgear....... I'm still unsure, I wish somebody would give me a correct number of degrees in the picture above.

 

It make sno difference, the mark is only related to TDC, -5/-5 is the same as on any other gear.

 

What makes no difference... The stock cam gears are set -5/-5 from TDC already. take a look at the sketch, it's a drawing of the stock cam gear. The locating hole is -5° from the mark in the gear..... My understanding is that some aftermarket gears come with the locating hole aligned with the timing mark in the pulley. Those must be set at -5°-4° = -9°....... Some cam gears come with the locating hole at -5° like the stock cam gears I guess those only need to be moved an indicated -4° to achieve the 4° retardation....... All I want to know is how many degrees should the locating hole in the above sketch be in order to get the optimum retardation for an MR with XEDE and 3" cat back exhaust.......

 

You are confusing yourself...if you use AEM set them at -5/-5. If you are using vishnu 0 mark for setting cam timing is one tooth left of the red dot set them at -5/-5

 

So are you asking if you can get the benefit of retarding the cam without spending $300 on cam gears?

 

Yes he is and he hasn't figured out that you can't do it and it's sort of funny.

 

What is really funny is how people don't seem to understand a desire to learn something about the car....... I can either advance or retard the timing 7.5° by simply moving the belt one tooth over in either direction.... does that make any sense to you? I'm just not sure which way is what.....

I can change the cam timing by a specific value without buying cam gears.... it's rather simple. It will cost some money to do it, but that is not the issue. I want to know where the dowel hole should move in order to retard timing.... The question is does it move to the right of the existing location (CW) or to the left (CCW). It's OK if you guys don't really know the answer or don't understand my question. If somebody out there can tell me the answer to my question, I'd be grateful.

Thanks

 

I see where you're going and would like to know also. Vishnu guys say buy $300 cam gears and retard timing 5 degrees. Well why spend $ if you don't need to. I'm no mechanic but I would say if you rotated the gear by one tooth counterclock wise it would further retard the timing. How much I don't know. I looked at the service manual and it says that timing may be within 7 degrees of accuracy.