User Tag List

+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 40 of 41

Thread: Inlet valves touching pistons in a LC 205 carb pinto

  1. #1
    I support TS Turbosport Subscriber

    Join Date
    Feb 2018
    Location
    TLV, IL
    Age
    38
    Posts
    33
    Thanks
    31
    Thanked 0 Times in 0 Posts

    Inlet valves touching pistons in a LC 205 carb pinto

    Hello everyone, please help shed some light on the following event.

    I removed the carb head from a running, LC (pistons are 1.5mm below deck at TDC), 205 block engine and I was amazed to find out that the inlet valves were touching the pistons with their edge that is closest to the spark plug hole.

    Contact area lengt of 3-4 mm, caused at least a 1mm deep punch in each and every piston.

    That engine was running, I personally drove it before taking it apart.

    I thought that the pintos are non-interference engines, and that valves can't touch the pistons no matter what.

    What am I missing? Is it possible that I have a machined head/block?

    I measured the head width to 91mm, and as I mentioned, pistons are 1.5mm below deck at TDC.

    What is going on?

    Let me know if I need to post some pictures of this to be clearer.

    Any input would be greatly appreciated.

    Thanks in advance,
    Matthew.

  2. #2
    Mechanic

    Join Date
    May 2007
    Location
    Belgium
    Posts
    725
    Thanks
    34
    Thanked 36 Times in 36 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    Are the timing marks correct, maybe the belt was not installed correct ?
    Is the cam standard ?

  3. #3
    I support TS Turbosport Subscriber

    Join Date
    Feb 2018
    Location
    TLV, IL
    Age
    38
    Posts
    33
    Thanks
    31
    Thanked 0 Times in 0 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    Back with some pictures that I hope can help shed light to all this...

    Inlet valve with a clearly visible scratch (near the spark plug hole) which is the valve contact area with the piston (all other inlet valves have same scratch)
    Click image for larger version Name:	valve.JPG Views:	177 Size:	53.9 KB ID:	82258

    Piston with a clearly visible "ding" caused by the inlet valve (it's about 1mm deep, all other pistons have same "ding")
    Click image for larger version Name:	piston_1024_3.JPG Views:	178 Size:	64.6 KB ID:	82259

    This is what's stamped on my block
    Click image for larger version Name:	block_s1.JPG Views:	177 Size:	137.7 KB ID:	82260

    I hope this helps, cause I'm cluless -(

  4. #4
    I support TS Turbosport Subscriber

    Join Date
    Feb 2018
    Location
    TLV, IL
    Age
    38
    Posts
    33
    Thanks
    31
    Thanked 0 Times in 0 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    "Are the timing marks correct, maybe the belt was not installed correct ?" - That's part of my question:
    I thought that the pintos are non-interference engines, and that valves can't touch the pistons no matter what. Am I wrong?

    I do not know the history of this engine, it most likely had a head work previously done. However, I do not know how to identify the head. It may as well be one from a 1600. How can I identify it correctly?

    Here is a close up of the head/cam
    Click image for larger version Name:	cam.JPG Views:	175 Size:	121.2 KB ID:	82261

    Click image for larger version Name:	cam2.JPG Views:	181 Size:	80.1 KB ID:	82262

  5. #5
    Mechanic

    Join Date
    May 2007
    Location
    Belgium
    Posts
    725
    Thanks
    34
    Thanked 36 Times in 36 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    std engine is indeed non interference, but an other cam, skimmed head and/or cambelt misplaced can cause this (or serious over revving the engine)

  6. The Following User Says Thank You to racing escort For This Useful Post:


  7. #6
    I support TS Turbosport Subscriber

    Join Date
    Feb 2018
    Location
    TLV, IL
    Age
    38
    Posts
    33
    Thanks
    31
    Thanked 0 Times in 0 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    In a non-interference engine the piston does not travel into any area into which the valves open. So, I do not see how over-revving or misplaced/snapped cambelt can cause this.

    If I'm correct, and it can't, the only other explanation is that either the head/block are machined, or the cam/valves are not STD.

    Or, are there any other options?
    Or am I not correct with the above assumption?

  8. #7
    I support TS Turbosport Subscriber rallyrob's Avatar

    Join Date
    Apr 2010
    Location
    Middlesex
    Age
    50
    Posts
    1,480
    Thanks
    40
    Thanked 92 Times in 86 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    Im surprised it hasnt got 4 bent inlet valves with the amount of contact there...

  9. #8
    I support TS Turbosport Subscriber

    Join Date
    Feb 2018
    Location
    TLV, IL
    Age
    38
    Posts
    33
    Thanks
    31
    Thanked 0 Times in 0 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    There was some damage to the inlet valves for sure.

    I was having horrible time to start it after more than 2 days.
    Was starting with a flip of the key if was starting it for 5 min every day.
    But skip a day and wow... could barely get it going.

    On one of such times, when I could not get it started, I gave it a compression test (I know I know, cold engine, but still) - it read 100psi on cyl#1 and 125psi on the others.

    So, I decided that it was time for an overhaul, popped it open, and here we are...

  10. #9
    I support TS Turbosport Subscriber

    Join Date
    Feb 2018
    Location
    TLV, IL
    Age
    38
    Posts
    33
    Thanks
    31
    Thanked 0 Times in 0 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    Still, back to the original question -
    am I correct to assume that the fact that valves touched pistons, on a Pinto which is a non-interference engine, means that either the head/block are machined, or the cam/valves are not STD?

  11. #10
    Spanner Monkey

    Join Date
    Mar 2012
    Location
    Birmingham
    Age
    33
    Posts
    284
    Thanks
    8
    Thanked 17 Times in 17 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    the valves in the photo are standard, the piston appears to be standard, have you the ability to cc the combustion chamber of the head? that would tell you if heads been skimmed.

  12. The Following User Says Thank You to theduck For This Useful Post:


  13. #11
    TURBOSPORT SPONSOR Turbosport Subscriber
    Turbosport Moderator
    Turbosport Administrator
    Graham's Avatar
    My Race Car
    My 1st Project
    Join Date
    Feb 2006
    Location
    Ely, Cambs
    Age
    51
    Posts
    22,859
    Thanks
    221
    Thanked 1,793 Times in 1,679 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    without doubt its been skimmed, a standard head is nearly 95mm thick measured from head face to cam cover gasket face, its probably been heavily skimmed to compensate for the low comp pistons

  14. The Following User Says Thank You to Graham For This Useful Post:


  15. #12
    Pit Crew Forest_rallying's Avatar

    Join Date
    Feb 2013
    Location
    Derbyshire
    Posts
    1,139
    Thanks
    3
    Thanked 131 Times in 125 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    It's possible that the engine has been running with the cam timing way out of adjustment. With your pistons down the bore 60 thou and a similar thickness for your head gasket you should have bags of clearance, even with a 1600 casting or a heavily skimmed 2.0 head. It's easy to check, get both inlet and exhaust valves on overlap and put a straight edge across the combustion chamber, it there's clearance between the straight edge and the valves then the problem's incorrect timing.

    From the photos the engine looks pretty std to the naked eye. Don't forget to renew all valves that have come into contact with the pistons as they'll probably be riddled with fatigue.
    Last edited by Forest_rallying; 27-02-2018 at 19:26.

  16. The Following User Says Thank You to Forest_rallying For This Useful Post:


  17. #13
    TURBOSPORT SPONSOR Turbosport Subscriber
    Turbosport Moderator
    Turbosport Administrator
    Graham's Avatar
    My Race Car
    My 1st Project
    Join Date
    Feb 2006
    Location
    Ely, Cambs
    Age
    51
    Posts
    22,859
    Thanks
    221
    Thanked 1,793 Times in 1,679 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    Quote Originally Posted by Forest_rallying View Post
    It's possible that the engine has been running with the cam timing way out of adjustment.
    that would also be my conclusion

  18. #14
    I support TS Turbosport Subscriber

    Join Date
    Feb 2018
    Location
    TLV, IL
    Age
    38
    Posts
    33
    Thanks
    31
    Thanked 0 Times in 0 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    I'll run the test suggested by Forest_rallying and come back with results and pictures. Thank You!!

    Also, my head measured only 91mm as opposed to 95mm mentioned by Graham. AFAIK, that's not a reasonable amount to be machined off a head, right? So that makes it a 1600 head, most likely?

    I'll cc the combustion chamber, as suggested by theduck, and hopefully it'll help identify the head.

    Thanks,
    Matthew.

  19. #15
    Pit Crew Decade Plus User

    Join Date
    Nov 2004
    Location
    Sweden
    Posts
    1,061
    Thanks
    3
    Thanked 77 Times in 75 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    If I'm not mistaken the 1600 head is not 4 mm shorter than a 2.0 head, rather the combustion chambers are more shallow (needing longer valves).

    So I do think it is possible that you have a 2.0 head that has been heavily skimmed. On standard heads I do think you can see a difference in the mounting face of the heads (1600 vs 2.0) but if it is skimmed 4 mm that may not be visible. But a photo showing the entire face might help.

    Gustaf

  20. The Following User Says Thank You to therealpinto For This Useful Post:


  21. #16
    I support TS Decade Plus User
    Turbosport Subscriber
    alladdin's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    May 2005
    Location
    s.wales
    Age
    54
    Posts
    9,235
    Thanks
    96
    Thanked 360 Times in 355 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    2 things, from memory theres a threaded hole in front face of head that gets too close to head face if over skimmed ?

    and - it may be the light but that cam looks heavily worn to me ?

  22. The Following User Says Thank You to alladdin For This Useful Post:


  23. #17
    TURBOSPORT SPONSOR Turbosport Subscriber
    Turbosport Moderator
    Turbosport Administrator
    Graham's Avatar
    My Race Car
    My 1st Project
    Join Date
    Feb 2006
    Location
    Ely, Cambs
    Age
    51
    Posts
    22,859
    Thanks
    221
    Thanked 1,793 Times in 1,679 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    1600 head is same thickness as 2.0, combustion chamber is shallower and valves are longer to compensate

  24. #18
    Mechanic

    Join Date
    Feb 2006
    Location
    Plymouth
    Posts
    867
    Thanks
    1
    Thanked 39 Times in 37 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    its a 2.0 head, obvious way of telling is the 3 holes at front of head on the inlet side which dont do anything

  25. The Following User Says Thank You to livewire514 For This Useful Post:


  26. #19
    I support TS Turbosport Subscriber

    Join Date
    Feb 2018
    Location
    TLV, IL
    Age
    38
    Posts
    33
    Thanks
    31
    Thanked 0 Times in 0 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    Did some head face cleaning, back with some photos.

    Also, per Forest_rallying's suggestion, put valves on overlap, in which state they are barely opened in my head (heavily worn cam as alladdin noted?) and are waaay below inside the combustion chamber, no where near the head surface. Didn't even need to put a straight edge over it.

    Did not get to cc the chambers yet, will get to it tomorrow.

    Head face pictures -

    Chambers 1 and 2:
    Click image for larger version Name:	cyl12.JPG Views:	138 Size:	110.1 KB ID:	82270

    Chambers 3 and 4:
    Click image for larger version Name:	cyl34.JPG Views:	140 Size:	103.9 KB ID:	82271

    All of it:
    Click image for larger version Name:	cylall1.JPG Views:	144 Size:	138.5 KB ID:	82272

    Also, found this inside, which has a different number than the one stamped on the block:
    Click image for larger version Name:	cylnumb.JPG Views:	141 Size:	22.2 KB ID:	82273

  27. #20
    I support TS Turbosport Subscriber

    Join Date
    Feb 2018
    Location
    TLV, IL
    Age
    38
    Posts
    33
    Thanks
    31
    Thanked 0 Times in 0 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    Quote Originally Posted by alladdin View Post
    2 things, from memory theres a threaded hole in front face of head that gets too close to head face if over skimmed ?

    and - it may be the light but that cam looks heavily worn to me ?
    "threaded hole in front face of head" - meaning the surface where the cam pulley resides?

  28. #21
    I support TS Decade Plus User
    Turbosport Subscriber
    alladdin's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    May 2005
    Location
    s.wales
    Age
    54
    Posts
    9,235
    Thanks
    96
    Thanked 360 Times in 355 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    yes, i think one gets very close to breaking through if its skimmed a lot. look for the lowest bolt hole.

  29. #22
    I support TS Turbosport Subscriber

    Join Date
    Feb 2018
    Location
    TLV, IL
    Age
    38
    Posts
    33
    Thanks
    31
    Thanked 0 Times in 0 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    Okay, I'll take some clear pictures of the head sides, all of'em and post here.

    Also, I'm reading this short thread -
    http://www.turbosport.co.uk/showthread.php?t=140138

    Where "RWD fords rule" mentions that -
    "...the std 2.0 head measures 94.9mm at the back of the head"

    Why is the emphasis on the back of the head? Is the width not uniform throughout the whole length of the head?

  30. #23
    TURBOSPORT SPONSOR Turbosport Subscriber
    Turbosport Moderator
    Turbosport Administrator
    Graham's Avatar
    My Race Car
    My 1st Project
    Join Date
    Feb 2006
    Location
    Ely, Cambs
    Age
    51
    Posts
    22,859
    Thanks
    221
    Thanked 1,793 Times in 1,679 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    the number inside the head is a casting number, no relevance . head thickness should be the same all the way round

  31. #24
    Pit Crew

    Join Date
    May 2010
    Location
    london
    Age
    54
    Posts
    1,138
    Thanks
    48
    Thanked 110 Times in 99 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    What condition where your plugs in...when we used to skim the head to its max..we had to change to short reach plugs.because they used to hit the pistons ..
    The other option is its a previous damage from another head..and someone just changed the head ...back in the day we used to put the old race engines back in the road car when they were past there racing best...still ok for the road car....or make an engine up from the old bits...cheers mark

  32. The Following User Says Thank You to madragon199 For This Useful Post:


  33. #25
    I support TS Decade Plus User
    Turbosport Subscriber
    wildo105e's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Oct 2006
    Location
    Manchester
    Age
    47
    Posts
    2,444
    Thanks
    73
    Thanked 127 Times in 126 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    Quote Originally Posted by madragon199 View Post
    The other option is its a previous damage from another head..and someone just changed the head ...
    Thats what crossed my mind. I snapped a cam belt years a go and bent some valves. Changed the valves and away i went.

  34. The Following User Says Thank You to wildo105e For This Useful Post:


  35. #26
    I support TS Turbosport Subscriber

    Join Date
    Feb 2018
    Location
    TLV, IL
    Age
    38
    Posts
    33
    Thanks
    31
    Thanked 0 Times in 0 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    I come back with clarifications and pictures, and - more questions -)

    Spark plug condition when I first removed them:
    Click image for larger version Name:	plugs.jpg Views:	122 Size:	112.6 KB ID:	82275

    Pistons condition when I first removed the head, before I cleaned them.
    All covered with a thick layer of black (burned oil?) but the spots where the valves touched:
    Click image for larger version Name:	piston.jpg Views:	118 Size:	83.5 KB ID:	82276

    And, I've carefully re-measured the head.
    It seems that I was originally wrong about it being 91mm, it seems to be of standard width of about 95mm:
    Click image for larger version Name:	head_width.jpg Views:	121 Size:	79.4 KB ID:	82277

  36. #27
    I support TS Turbosport Subscriber rallyrob's Avatar

    Join Date
    Apr 2010
    Location
    Middlesex
    Age
    50
    Posts
    1,480
    Thanks
    40
    Thanked 92 Times in 86 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    Quote Originally Posted by sigurko View Post
    I come back with clarifications and pictures, and - more questions -)

    Spark plug condition when I first removed them:
    Attachment 82275

    Pistons condition when I first removed the head, before I cleaned them.
    All covered with a thick layer of black (burned oil?) but the spots where the valves touched:
    Attachment 82276

    And, I've carefully re-measured the head.
    It seems that I was originally wrong about it being 91mm, it seems to be of standard width of about 95mm:
    Attachment 82277
    Surely it's got to be cam timing out then hasn't... A tooth or more...

  37. The Following User Says Thank You to rallyrob For This Useful Post:


  38. #28
    I support TS Turbosport Subscriber

    Join Date
    Feb 2018
    Location
    TLV, IL
    Age
    38
    Posts
    33
    Thanks
    31
    Thanked 0 Times in 0 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    Quote Originally Posted by madragon199 View Post
    The other option is its a previous damage from another head..and someone just changed the head ...back in the day we used to put the old race engines back in the road car when they were past there racing best...still ok for the road car....or make an engine up from the old bits...cheers mark
    This thought crossed my mind, but I (wrongly?) dismissed it because the pistons were all black (burned oil? as can be seen in above picture) with the exception of the clean silver "ding" where the valves touched.
    So, to my mind, I though that this is a recurring state, cause otherwise, why would that "ding" also not get covered black?

  39. #29
    I support TS Turbosport Subscriber

    Join Date
    Feb 2018
    Location
    TLV, IL
    Age
    38
    Posts
    33
    Thanks
    31
    Thanked 0 Times in 0 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    Quote Originally Posted by rallyrob View Post
    Surely it's got to be cam timing out then hasn't... A tooth or more...
    Well, actually, I'm even more confused now.

    It seems that the head, valves and piston-deck height are all LC STD. And, being a non-interference STD engine, valves should not touch pistons, no matter how bad cam timing is, or even if cam belt snaps.

    Only ration explanation is that is really is damage from a previous head, but than I do not understand why was that silver "ding" on the pistons not covered black, as the rest of the piston surface.

    Clueless -(

  40. #30
    Tyre Kicker 3.5cologne's Avatar

    Join Date
    Jun 2017
    Location
    New Zealand
    Posts
    15
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    Just a thought. Have you pulled the valve that has been hitting to see if it has maybe been sticking into the guide?

  41. #31
    Mechanic snapper1's Avatar

    Join Date
    Oct 2010
    Location
    Chelmsford
    Age
    61
    Posts
    536
    Thanks
    19
    Thanked 31 Times in 29 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    Plasticine on the pistons, dummy fit head with old gasket, time it, turn it by hand, pull the head check valve impressions in plasticine.
    Fit thicker gasket if valve piston distance is to tight.

  42. The Following User Says Thank You to snapper1 For This Useful Post:


  43. #32
    Pit Crew

    Join Date
    May 2010
    Location
    london
    Age
    54
    Posts
    1,138
    Thanks
    48
    Thanked 110 Times in 99 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    The other possible thing is the blocks been decked and the pistons are hitting the valve..(not valves hitting pistons) or the rods are longer..check to see if pistons come past the gasket ..
    . Cheers mark

  44. The Following User Says Thank You to madragon199 For This Useful Post:


  45. #33
    TURBOSPORT SPONSOR Turbosport Subscriber
    Turbosport Moderator
    Turbosport Administrator
    Graham's Avatar
    My Race Car
    My 1st Project
    Join Date
    Feb 2006
    Location
    Ely, Cambs
    Age
    51
    Posts
    22,859
    Thanks
    221
    Thanked 1,793 Times in 1,679 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    turn the cam to full lift on a cylinder thats got marks and see if a valve comes proud of the head if it does, theres the answer, its probably had a belt snap or been timed way out

  46. #34
    I support TS Decade Plus User
    Turbosport Subscriber
    Miniliteman's Avatar

    Join Date
    Feb 2004
    Location
    the Netherlands
    Posts
    4,027
    Thanks
    16
    Thanked 403 Times in 376 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    From memory a Pinto head measures 94.5 mm unskimmed.
    If the marks on the pistons are definately from the valves then it could be that the engine has weak valvesprings and/or has been revved hard (out of gear) which lead to the valve not fully home before piston is in TDC.

  47. The Following User Says Thank You to Miniliteman For This Useful Post:


  48. #35
    TURBOSPORT SPONSOR Turbosport Subscriber
    Turbosport Moderator
    Turbosport Administrator
    Graham's Avatar
    My Race Car
    My 1st Project
    Join Date
    Feb 2006
    Location
    Ely, Cambs
    Age
    51
    Posts
    22,859
    Thanks
    221
    Thanked 1,793 Times in 1,679 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    Quote Originally Posted by Miniliteman View Post
    If the marks on the pistons are definately from the valves then it could be that the engine has weak valvesprings and/or has been revved hard (out of gear) which lead to the valve not fully home before piston is in TDC.
    or someone has selected a gear way too low for the road speed and mechanically over reved it

  49. The Following User Says Thank You to Graham For This Useful Post:


  50. #36
    Pit Crew

    Join Date
    May 2012
    Location
    Camberley, Surrey
    Posts
    1,847
    Thanks
    2
    Thanked 159 Times in 159 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    I'm as confused as the OP - if the engine is non interference then if 'stock' there should be never an occasion that the valves can touch the pistons - I snapped a cam belt back in the day in my RS2 driving hard up a hill - engine stopped dead but took a fraction before clutch got dipped so pistons were being driven by road speed..... no contact and no damage. So I figure the ONLY way contact could occur is valve float - weak springs or serious rpm action - I could never get mine anywhere near valve float territory so i'm puzzled. Those dings don't look like a rpm 'kiss' more serious continuous contact abuse so even more puzzling! If the piston was getting close to the head, I'd expect to see the squish zone fairly clean / carbon free - but it isn't.......its a mystery!

  51. The Following User Says Thank You to katana For This Useful Post:


  52. #37
    Pit Crew Forest_rallying's Avatar

    Join Date
    Feb 2013
    Location
    Derbyshire
    Posts
    1,139
    Thanks
    3
    Thanked 131 Times in 125 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    It is a mystery Katana why this thread is causing so much of a fuss for a std Pinto engine. The OP has told us that the pistons are 60 thou off TDC so there's no chance of them hitting the head. The std Pinto engines I had never reved any higher than a modern Diesel engine so the chance of valve bounce would be minimal unless the springs were broken or came from a Bic pen.

    It's clear that it's nothing more than a snapped belt or more likely a incorrectly timed cam. Are we all having our Pants pulled down here?

  53. The Following 2 Users Say Thank You to Forest_rallying For This Useful Post:


  54. #38
    Spanner Monkey Escort TC's Avatar
    My Race Car
    Join Date
    Jan 2009
    Location
    Germany
    Posts
    419
    Thanks
    2
    Thanked 33 Times in 32 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    In this position it is never a valve contact. This isnt the deepest point of the valve. The mark on The Piston ist also to smal for a valve contact.

  55. The Following User Says Thank You to Escort TC For This Useful Post:


  56. #39
    I support TS Turbosport Subscriber

    Join Date
    Feb 2018
    Location
    TLV, IL
    Age
    38
    Posts
    33
    Thanks
    31
    Thanked 0 Times in 0 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    Good people of turbosport, thank you all for your time and the advice that you have so kindly provided.

    I will put that to use while rebuilding this engine. But that is for a different thread, which I hope to open soon enough.

    Cheers,
    Matthew.

  57. #40
    Mechanic lowscorts's Avatar

    Join Date
    Feb 2003
    Location
    Bucks
    Age
    42
    Posts
    599
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Re: Inlet valves touching pistons in a LC 205 carb pinto

    the dent certainly looks too deep and narrow for a valve edge, maybe somethings gone through it at some point, or a heavy handed stop through the plug holes while timing up?

+ Reply to Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts