FML! bent 8 rods today
03-23-2011, 08:33 PM
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FML! bent 8 rods today so i was workin on my TA at school today and i put a new opti on and noticed the cam gear bolts were only finger tight and the third one the head was snapped off. so my buddy pulled the other two out to locktite and the cam gear fell down. didnt think anything of it bc it bolted right back up when i pushed it up. got it back together and started it and it sounded like athousand bolts hit the floor. cam and crank were 180' off time. boner killer haha
03-23-2011, 08:42 PM
#3
Sorry to hear about the bent rods ... I hope the valves are ok.
I do have a question though;
I hear people say "180 off" or "180 out" from time to time. But I don't understand how it matters.
That crankshaft spins twice for every time the cam spins once. The crank doesn't care which
cycle it's on .. it does the same thing to compress as it would to exhaust. So if you line up dot to dot,
how does this cause damage? It sounds like the cam sprocket went back on somewhere other than dot to dot.
I do have a question though;
I hear people say "180 off" or "180 out" from time to time. But I don't understand how it matters.
That crankshaft spins twice for every time the cam spins once. The crank doesn't care which
cycle it's on .. it does the same thing to compress as it would to exhaust. So if you line up dot to dot,
how does this cause damage? It sounds like the cam sprocket went back on somewhere other than dot to dot.
03-23-2011, 08:51 PM
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03-24-2011, 02:42 PM
#8
<-- NOT MINE, random google images picCan happen if your pistons jam the valves back up into the head because
a) timing chain skips, breaks or is set wrong
b) you overtighten your rockers
I'd rather bend a pushrod than break a valve or damage a piston anyday.
03-24-2011, 04:36 PM
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so i was workin on my TA at school today and i put a new opti on and noticed the cam gear bolts were only finger tight and the third one the head was snapped off. so my buddy pulled the other two out to locktite and the cam gear fell down. didnt think anything of it bc it bolted right back up when i pushed it up. got it back together and started it and it sounded like athousand bolts hit the floor. cam and crank were 180' off time. boner killer haha
1. Why did you remove the timing cover to change an opti?
2. The gear fell off and you want us to believe the cam magically aligned 180 degrees out of phase?
With heads, push rods and springs on a car you don't simply turn a cam with your finger. To get a cam to turn to align 180 degrees out of phase doesn't just happen. Sounds like a story but not one I believe.
Good luck
03-24-2011, 04:49 PM
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This section is always entertaining. There are so many things to question from your post I will ask 2 questions:
1. Why did you remove the timing cover to change an opti?
2. The gear fell off and you want us to believe the cam magically aligned 180 degrees out of phase?
With heads, push rods and springs on a car you don't simply turn a cam with your finger. To get a cam to turn to align 180 degrees out of phase doesn't just happen. Sounds like a story but not one I believe.
Good luck
1. Why did you remove the timing cover to change an opti?
2. The gear fell off and you want us to believe the cam magically aligned 180 degrees out of phase?
With heads, push rods and springs on a car you don't simply turn a cam with your finger. To get a cam to turn to align 180 degrees out of phase doesn't just happen. Sounds like a story but not one I believe.
Good luck
I do agree that you cannot turn the cam or crank easily at any point on an assembled engine. Unless its worn the *** out and no valve train in installed. LMAO Cant wait for further explanation.
03-24-2011, 08:00 PM
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Well I took the gear off b.c on bolt was snapped off inside the can and the others were finger tight so I was going to put thread locker on them as for how it got turned Idk BC I sure the hell didn't turn it over but when I pulled it apart both timing marks were at the top nope cam mark at bottom and crank mark at top like its supposed to be
03-24-2011, 08:08 PM
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Only thing I can think of is its a 93. IIRC you can see the cam sprocket with the opti out.
I do agree that you cannot turn the cam or crank easily at any point on an assembled engine. Unless its worn the *** out and no valve train in installed. LMAO Cant wait for further explanation.
I do agree that you cannot turn the cam or crank easily at any point on an assembled engine. Unless its worn the *** out and no valve train in installed. LMAO Cant wait for further explanation.
03-24-2011, 08:13 PM
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Well I took the gear off b.c on bolt was snapped off inside the can and the others were finger tight so I was going to put thread locker on them as for how it got turned Idk BC I sure the hell didn't turn it over but when I pulled it apart both timing marks were at the top nope cam mark at bottom and crank mark at top like its supposed to be
There seems to be many mysteries in this section so a cam turning itself is nothing out of the ordinary.
Good luck on valves not being bent.
Thankfully.
03-24-2011, 09:17 PM
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Oh damn! I was drawn to this thread because of the "8 Bent Rods" and it turns out it's pushrods. I was so excited to see how the F someone bent 8 connecting rods. Anyways, hope you get it fixed and at least you're learning.
