difference in j4 cams

1. hazlo Regular Poster Joined: Nov 2011 Posts: 452

   #1 2nd March 2014, 18:19

   Can anyone tell me the difference between the inlet and exhaust cams on a j4 engine, as ive muddled them up! Thanks!
2. user_20080 Saxperience Hardcore! Joined: Dec 2007 smurfland. Posts: 17346 Ex saxo owner.

   #2 2nd March 2014, 20:03

   Get a pic up,someone is bound too know mate.
3. hazlo Regular Poster Joined: Nov 2011 Posts: 452

   #3 2nd March 2014, 20:27

   Found a thread in the end. It looks like when the inlet cam notch for the pulley to locate on is turned to 7 oclock, the nearest cam lobes to the pulley face to 9 oclock. So ive put it back together and sealed it up with that cam on the inlet side. Fingers crossed
4. wullvfr Established Member Joined: Jan 2009 killin,perthshire Posts: 1561 Audi a3 1.8sport,kawasaki zx9r c2,Yamaha R1 track

   #4 2nd March 2014, 21:15

   Do they not have ex and in on them?
5. hazlo Regular Poster Joined: Nov 2011 Posts: 452

   #5 2nd March 2014, 21:19

   Nope unfortunately not
6. wullvfr Established Member Joined: Jan 2009 killin,perthshire Posts: 1561 Audi a3 1.8sport,kawasaki zx9r c2,Yamaha R1 track

   #6 2nd March 2014, 21:22

   Oh dear,bugger that.
   
   The arsehole will be twitching like a rabbits nose when it comes to firing her up
7. hazlo Regular Poster Joined: Nov 2011 Posts: 452

   #7 2nd March 2014, 21:37

   Haha too right. Sounds like theyre the right way round. Ill be turning it over by hand first like but still if it runs like a bag of nails I'll know that not everything you read on the net is true!
8. hazlo Regular Poster Joined: Nov 2011 Posts: 452

   #8 5th March 2014, 11:48

   Well ive put the cambelt on and timed up by finding tdc from the piston nearest the cambelt, then locked the 2 cam pulleys with bolts. Then tightened the belt and when slowly turning the engine by hand there is contact between piston and valve somewhere. I was told that is how to time the engine. Is that correct? And if not then I guess that I followed some shit advice and the cams are the wrong way round.
   
   Can anyone confirm for me which is the inlet and which is exhaust? I read tgat when the notch for the pulley on the inlet cam is at 7oclock the nearest lobes point to 9 oclock. Is that definately the inlet cam?
9. user_13958 Saxperience Forum Bum Joined: Feb 2007 Posts: 3068

   #9 5th March 2014, 12:02

   I have some pictures that may help...
   
   The lobes relevant to each piston must be the opposite (180*) of each other. The pictures show the position they should be lock at when the bottom end is locked!
   
   
   
   
   
   
10. hazlo Regular Poster Joined: Nov 2011 Posts: 452

    #10 5th March 2014, 12:19

    Thats excellent thanks mate. So the first 2 lobes are facing away from each other when locked, tge inlet faces to the rear of the car and the exhaust lobes face to the front of the car? Thats hiw mine are at the moment.