Why cant i turn the engine over by hand?

1. user_34945 Regular Poster Joined: Jun 2009 Harleston, Norfolk Posts: 469 Mk2 Saxo Vtr 16V

   #1 2nd July 2011, 16:09

   Right, as you can see from the pics i have mostly built the engine, the crankshaft will rotate about 3/4 of a turn either way but when i follow the haynes manual it wont rotate more than that, can anyone see what ive done wrong?
   
   
   
   
   
   
   
   
   
   
2. KrisB Saxperience Forum Bum Joined: Aug 2009 Dorking,Surrey,M25 J9 Posts: 2616 Static -80mm Peugeot 405

   #2 2nd July 2011, 16:20

   If i were you i'd check the timing using something to lock the flywheel and the cams. Not just the marks on the belt.
3. Sandy309 Regular Poster Joined: Jan 2010 Cornwall Posts: 349 106 XSi

   #3 2nd July 2011, 16:25

   Looks to me as though the inlet cam and exhaust cam are the wrong way around. The pulley slots are at different angles. DO NOT TURN IT!!
   
   There was a lad a while back on SSC I think it was, had Catcams that were labelled the wrong way around and I identified that as the problem. Once corrected it was fine.
4. user_34945 Regular Poster Joined: Jun 2009 Harleston, Norfolk Posts: 469 Mk2 Saxo Vtr 16V

   #4 2nd July 2011, 16:29

   i did what haynes said, locked the crank at tdc on the flywheel side, rotated the cam sprocket clockwise by hand tightened the sprockets up, tensioned the tensioner and tried to rotate, but after 1/2 - 3/4 of a turn its solid.
5. user_34945 Regular Poster Joined: Jun 2009 Harleston, Norfolk Posts: 469 Mk2 Saxo Vtr 16V

   #5 2nd July 2011, 16:31

   I looked everywhere to make sure i had them the right way around but just couldent find and answers lol, as it is i think the exhaust cam has 00 stamped on it and the inlet cam has 99 stamped on it.
6. Sandy309 Regular Poster Joined: Jan 2010 Cornwall Posts: 349 106 XSi

   #6 2nd July 2011, 16:36

   What cams are they?
7. user_34945 Regular Poster Joined: Jun 2009 Harleston, Norfolk Posts: 469 Mk2 Saxo Vtr 16V

   #7 2nd July 2011, 16:37

   Standard mate
8. Sandy309 Regular Poster Joined: Jan 2010 Cornwall Posts: 349 106 XSi

   #8 2nd July 2011, 16:46

   I've just checked a standard head and when the pulleys are on the dowels, the lobes nearest the pulleys should point away from each other, pretty much horizontal. Swap the cams and on the dowels it looks likes yours. The head has lumps cast in it to prevent them being swapped, but they may have been ground away?
9. user_34945 Regular Poster Joined: Jun 2009 Harleston, Norfolk Posts: 469 Mk2 Saxo Vtr 16V

   #9 2nd July 2011, 17:01

   They may have been im not sure, i know ive not done it lol, ill swap them over tomorrow and see if its better, any chance they could be aftermarket camshafts??
10. Sandy309 Regular Poster Joined: Jan 2010 Cornwall Posts: 349 106 XSi

    #10 2nd July 2011, 17:06

    It's possible.
11. user_34945 Regular Poster Joined: Jun 2009 Harleston, Norfolk Posts: 469 Mk2 Saxo Vtr 16V

    #11 2nd July 2011, 17:15

    Are standard ones stamped with any id marks?
12. user_34945 Regular Poster Joined: Jun 2009 Harleston, Norfolk Posts: 469 Mk2 Saxo Vtr 16V

    #12 2nd July 2011, 17:21

    have just looked at some pics i took when i first took the engine apart and it does show the cam lobes at opposites to each other like you said, so that is my problem, DOH!!
13. Sandy309 Regular Poster Joined: Jan 2010 Cornwall Posts: 349 106 XSi

    #13 2nd July 2011, 17:41

    Hopefully, if you haven't leant on it too hard and tipped valves... it'll all be fine.
14. user_34945 Regular Poster Joined: Jun 2009 Harleston, Norfolk Posts: 469 Mk2 Saxo Vtr 16V

    #14 2nd July 2011, 18:06

    No, the crank just slipped on the belt thankfully.
15. user_34945 Regular Poster Joined: Jun 2009 Harleston, Norfolk Posts: 469 Mk2 Saxo Vtr 16V

    #15 3rd July 2011, 21:48

    Just to update, swapped cams over and run fine, cheers
16. raunchz Saxperience Addict Joined: Jul 2005 Solihull / Bournemouth Posts: 14233 2015 Lapiz Blue Golf R

    #16 3rd July 2011, 21:49

    Quote:

    Originally Posted by Deano_Blad Just to update, swapped cams over and run fine, cheers

    Tu5J4 0 - 1 Sandy Brown
17. Sandy309 Regular Poster Joined: Jan 2010 Cornwall Posts: 349 106 XSi

    #17 4th July 2011, 05:39

    Good news
18. user_34945 Regular Poster Joined: Jun 2009 Harleston, Norfolk Posts: 469 Mk2 Saxo Vtr 16V

    #18 4th July 2011, 17:08

    Just out of curiosity, how hard is too hard? This serves me right for rushing it, don't know whether it's worth taking head off and checking? :s
19. Sandy309 Regular Poster Joined: Jan 2010 Cornwall Posts: 349 106 XSi

    #19 5th July 2011, 06:11

    Can't really say, doesn't take much effort to bend 6mm stem valves! A compression check might be an idea first.