ratter Member 6,793 Member For: 20y 4m 8d Gender: Male Location: @ my laptop Posted 30/07/13 11:56 AM Posted 30/07/13 11:56 AM no worries, that answers that
F1PERFORMANCE Legacy Donating Member 104 Member For: 17y 6m 22d Gender: Male Location: VIC Posted 30/07/13 12:20 PM 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
matsfgxr6turbo Member 388 Member For: 16y 8m Posted 30/07/13 01:52 PM Posted 30/07/13 01:52 PM fark that head looks like its cactus I wish you luck hope ford comes to the party
blueprintbullet Legacy Donating Member 163 Member For: 18y 7m 2d Gender: Male Location: Wanneroo Posted 30/07/13 10:24 PM Author Posted 30/07/13 10:24 PM Exactly my thoughts F1performance just hope the clowns at ford can see the same.
arronm Dropping a turd Legacy Donating Member 9,520 Member For: 18y 11m 8d Gender: Male Location: Perth Posted 30/07/13 11:30 PM 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
PookeyMaster Legacy Donating Member 1,531 Member For: 15y 9m 16d Gender: Male Location: Parramatta, NSW Posted 30/07/13 11:58 PM 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.
ratter Member 6,793 Member For: 20y 4m 8d Gender: Male Location: @ my laptop Posted 31/07/13 12:04 AM 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
blueprintbullet Legacy Donating Member 163 Member For: 18y 7m 2d Gender: Male Location: Wanneroo Posted 31/07/13 12:22 AM Author 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
blueprintbullet Legacy Donating Member 163 Member For: 18y 7m 2d Gender: Male Location: Wanneroo Posted 31/07/13 12:23 AM Author Posted 31/07/13 12:23 AM Not going to touch the head myself just waiting to see what happens today
ratter Member 6,793 Member For: 20y 4m 8d Gender: Male Location: @ my laptop Posted 31/07/13 12:35 AM 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
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