ratter Member 6,793 Member For: 19y 15d Gender: Male Location: @ my laptop Posted 30/07/13 11:56 AM Share Posted 30/07/13 11:56 AM no worries, that answers that Link to comment https://www.fordxr6turbo.com/forum/topic/85759-fg-droped-a-valve/page/3/#findComment-1411386 Share on other sites More sharing options...
F1PERFORMANCE Donating Members 104 Member For: 16y 2m 29d Gender: Male Location: VIC Posted 30/07/13 12:20 PM Share Posted 30/07/13 12:20 PM This is very common when a valve has hit a piston - from my experience you can bend a valve and it not show the usual signs as spring pressure seats the valve good enough to mask the problem - and in time the valve will fail from fatigue its like bending a metal backwards an forwards till it breaks. Note my experience is with larger valves and spring seat pressure - The valve guide might give you the answer to what has been going on with the valve Link to comment https://www.fordxr6turbo.com/forum/topic/85759-fg-droped-a-valve/page/3/#findComment-1411394 Share on other sites More sharing options...
matsfgxr6turbo Member 388 Member For: 15y 4m 6d Posted 30/07/13 01:52 PM Share Posted 30/07/13 01:52 PM fark that head looks like its cactus I wish you luck hope ford comes to the party Link to comment https://www.fordxr6turbo.com/forum/topic/85759-fg-droped-a-valve/page/3/#findComment-1411420 Share on other sites More sharing options...
blueprintbullet Donating Members 163 Member For: 17y 3m 8d Gender: Male Location: Wanneroo Posted 30/07/13 10:24 PM Author Share Posted 30/07/13 10:24 PM Exactly my thoughts F1performance just hope the clowns at ford can see the same. Link to comment https://www.fordxr6turbo.com/forum/topic/85759-fg-droped-a-valve/page/3/#findComment-1411463 Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 7m 16d Gender: Male Location: Perth Posted 30/07/13 11:30 PM Share Posted 30/07/13 11:30 PM (edited) If any of the other valves show cracking, Ford should be liable. You need to strip the head and fluro mag part or dye pen all the valves. Seeing you are in Perth why dont you call me and I will organise it 0411733583 Edited 30/07/13 11:31 PM by arronm Link to comment https://www.fordxr6turbo.com/forum/topic/85759-fg-droped-a-valve/page/3/#findComment-1411479 Share on other sites More sharing options...
PookeyMaster Donating Members 1,531 Member For: 14y 5m 23d Gender: Male Location: Parramatta, NSW Posted 30/07/13 11:58 PM Share Posted 30/07/13 11:58 PM That's one definitely ruined engine. On a stock car, how does this sort of thing happen? blueprint said the chain guide broke a couple of years ago but I've only seen pics like that on tuned cars and normally 350+ cars. Link to comment https://www.fordxr6turbo.com/forum/topic/85759-fg-droped-a-valve/page/3/#findComment-1411485 Share on other sites More sharing options...
ratter Member 6,793 Member For: 19y 15d Gender: Male Location: @ my laptop Posted 31/07/13 12:04 AM Share Posted 31/07/13 12:04 AM (edited) we have seen many chain guide issues that have caused the cams to jump up to 3 teeth and not have any valve issues, saw 1 BA that had jumped maybe 15 teeth and bent all the exhaust valves Edited 31/07/13 12:05 AM by ratter Link to comment https://www.fordxr6turbo.com/forum/topic/85759-fg-droped-a-valve/page/3/#findComment-1411487 Share on other sites More sharing options...
blueprintbullet Donating Members 163 Member For: 17y 3m 8d Gender: Male Location: Wanneroo Posted 31/07/13 12:22 AM Author Share Posted 31/07/13 12:22 AM This is all true and from my understanding the cams need to be overly advanced for the intake valves to hit the pistons, but that being said it has happened. When the chain jumped it was just after it changed from first to second, after it happened I lost all power quickly came to a stop and the motor was still just running but it sounded awful something like putting something in the spokes of your bike. I mentioned this to the head mech and he said it was because it was overly advanced and it was dieseling. I didn't believe what he said but had no choice Link to comment https://www.fordxr6turbo.com/forum/topic/85759-fg-droped-a-valve/page/3/#findComment-1411491 Share on other sites More sharing options...
blueprintbullet Donating Members 163 Member For: 17y 3m 8d Gender: Male Location: Wanneroo Posted 31/07/13 12:23 AM Author Share Posted 31/07/13 12:23 AM Not going to touch the head myself just waiting to see what happens today Link to comment https://www.fordxr6turbo.com/forum/topic/85759-fg-droped-a-valve/page/3/#findComment-1411493 Share on other sites More sharing options...
ratter Member 6,793 Member For: 19y 15d Gender: Male Location: @ my laptop Posted 31/07/13 12:35 AM Share Posted 31/07/13 12:35 AM we recently had a FG that had jumped 2 or 3 teeth (can't remember off the top of my head) and was very noisy and was 100% ok after rectifying it, none of the others have been noisy though.good luck with ford though Link to comment https://www.fordxr6turbo.com/forum/topic/85759-fg-droped-a-valve/page/3/#findComment-1411496 Share on other sites More sharing options...
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