I decided to just do it myself. I bought a press today

 

well who did you have to cut the cam cause the intake cam has to be cut down and have the cam sensor pressed on after?

 

anyone figure this out? Im an 07 and would love to have cams when i build my engine!

 

your not the only one I might have found someone in Maryland but got to make sure first I have stage 3 cams waiting to go in

 

Did you ever get around to putting the cams on?

 

Exhaust cam needs to be cut as well. The process is all very easy if you have basic tools/access to a press.

hacksaw went right through it. Wrapped the good end in plastic wrap and a rag to keep it safe and put the trash end in a vice. I used the side of the vice to get the blade started straight, and it went very well.









Once I sand/polish the end smooth, you would never know anything happened.


As for the intake cam, you need to be a bit more careful where you cut as the clearances are tighter. Still not bad, just be a bit more careful.

I havent done the intake cam yet, but I am first going to take the sensor off and make sure that it fits on the existing journal. If it fits, its smooth sailing... cut the cam close the the same length as stock (can be a bit longer, wont hurt anything as long as there is clearance at the end of the head), and press the sensor on. I have a press, but I know most people do not.

There are four "lugs" on the sensor. Each lines up with the center mark of the lobes. Both the aftermarket cams and the factory have a line that runs through the center of the lobe closest to the gear, and down the shaft. Just make sure the sensor is lined up in the same way, and you are off and running.

here are some pics of the reference line. I spoke with josh from ottp and he said it should be good +/-2*, but it shouldnt be hard to get it close to perfect.





as you can see, the line is alligned with the left edge of the nub. just mark that nub (it is the only lone nub), and replicate it on the new cam.

I will update when I play with getting the sensor on sometime this week. From how it looks, it should fit right on the journal, but I will verify before I promise anything.

as far as "balance", I am not concerned whatsoever. If you look at the factory cam and all the extra casting/stamping/whatnot, it is all over the place. the machining on the end of the factory intake cam is even off center. The cam spins at a fraction (i wanna say half, but dont quote me) the speed of the engine, and has a tiny diameter, so as long as you get it close, you wont have an issue. Take your time and do the best job you can.

 

For anyone worrying about "throwing off the balance"....



the spot welded one is the end i cut off the zzp cam, and the factory intake cam with the sensor. If the giant sensor hanging off the cam doesn't throw it off, a damn near straight cut certainly wont...

 

Got the intake cam finished. Took about an hour start to finish.

Size reference. It was so close it could have been the angle i was holding the mictometer.

Stock:


lsj style cam:



Not a perfect cut, but I'm not worried at all


Again, I just eyeballed this, but it looks pretty damn close to stock. Note that the stock one was lined up with the left outside edge, not the center. I could have probably gotten it a degree more to the outside, but I didnt want it o loosen up taking it off and on multiple times. From what I understand, the cam sensor is for starting purposes. If it is off a degree or two, it shouldn't matter. If it is significantly off, the car will have hard starts (you will know right away if there is something wrong). Again, this is from what I understand... correct me if I'm wrong.


These last pictures didnt turn out too good, but you get the idea...

set in the journals:


Showing the sensor centered to the electronic sensor hole. I just realized this makes it look slightly off, but it is centered to the point where it wont be an issue.


General shot



Hope this at least cleared up some confusion for people. I decided I would take my zzp s2 cams and guinea pig it up for you guys. The car wont be finished for a few months, so I cant give any finished results...but I figure this could still help someone out.

 

not the most precise way to compare, but it shows that is is close enough to not lose sleep over. Definitely within +/-2*, even though that was just a general suggestion.

 

Cant wait to see if this works. would be great to cam a 07

 

couldn't we just cut the cam to fit and tune out cam sensor?

 

Interesting concept. I see DTC's that can be disabled in HPT. Wonder if it'd work...