Important! : Valves and pistons hitting together.

1. toxic Frequent Poster Joined: Mar 2007 Posts: 772

   #1 13th January 2011, 13:02

   hi there just stripped down an engine and took off the cylinder head, and took it off the block and now have seen where the valves have made a dent in the pistons it was just the inlet ones can anyone tell me what i have to do next, do i just need to buy new valves or pistons as well? why has it done this? is it the timing that someone hasn't done right?
2. willsy West Midlands Joined: Nov 2005 Nuneaton (West Mids) Posts: 13835 '64 Volvo V40 R’Design, '89 Ph1 309 GTi, ‘97 Mk1 S

   #2 13th January 2011, 13:06

   Which engine is it?
   
   Pics?
   
   If its 1.6 16V (VTS or GTi) engine then there is very slight notches in the pistons.
   
   Obviously if some are larger than others or they look noticeably battered then thats not normal
   
   Theyre more noticeable on one side (cant remember if its inlet or outlet) but there is very small notches on the opposite side too which probably wont be noticeable at first glance if the top of the pistons have too much dirt/sooty residue on them
3. user_32315 Saxperience Post Whore Joined: Mar 2009 Uppingham, Rutland Posts: 9569 mk1 JP4'd VTR, '16 Fabia Monte Carlo

   #3 13th January 2011, 13:36

   if valves have made contact you might be lucky
   
   my mates cambelt slipped a tooth and his valves dented the pistons, but he managed to just get new valves fitted and then re fitted the head and car runs fine
4. user_10176 Saxperience Post Whore Joined: Jun 2006 Ramsey st marys, peterborough Posts: 8288 Saxo's, Corsa (Daily)

   #4 13th January 2011, 13:40

   Yer normal the pistons will be ok as the valves will bend first so normal the valves need sorting.
   
   But if a vts then the inlet side have the groves
5. toxic Frequent Poster Joined: Mar 2007 Posts: 772

   #5 13th January 2011, 15:46

   Quote:

   Originally Posted by willsy Which engine is it? Pics? If its 1.6 16V (VTS or GTi) engine then there is very slight notches in the pistons. Obviously if some are larger than others or they look noticeably battered then thats not normal Theyre more noticeable on one side (cant remember if its inlet or outlet) but there is very small notches on the opposite side too which probably wont be noticeable at first glance if the top of the pistons have too much dirt/sooty residue on them

   Hi there i have a 106 gti they look all the same. and the valves look fine to i now think they should be like this lol
6. user_32315 Saxperience Post Whore Joined: Mar 2009 Uppingham, Rutland Posts: 9569 mk1 JP4'd VTR, '16 Fabia Monte Carlo

   #6 13th January 2011, 15:55

   take some pics and get them up im sure someone would clarify that your engine is fine, especially if when you last used it, it was fine
7. user_37194 Established Member Joined: Sep 2009 rotherham Posts: 1832 Be scirocco, full on 03plate track spec Saxo

   #7 13th January 2011, 16:02

   shud look like this...
   
8. toxic Frequent Poster Joined: Mar 2007 Posts: 772

   #8 13th January 2011, 16:08

   yes that the same lol
   
   
   http://i1239.photobucket.com/albums/...engine0033.jpg
9. user_37194 Established Member Joined: Sep 2009 rotherham Posts: 1832 Be scirocco, full on 03plate track spec Saxo

   #9 13th January 2011, 16:11

   its fine then.
10. toxic Frequent Poster Joined: Mar 2007 Posts: 772

    #10 13th January 2011, 16:25

    panic over lol all new to me engine stuff lol