Didnt think about that, I dont know enough about aftermarket rockers to comment on that one!
|
|
06-23-2011
Didnt think about that, I dont know enough about aftermarket rockers to comment on that one!
06-23-2011
If the cam got f*cked, wouldn't the lifters look like hell too? The rollers on them look brand new. I'll pull the heads tonight and have a look. I REEEEAAALLLY don't want to have to pull the cam out again.
P.S. I never changed the rockers. They are stock.
Last edited by Bedwards; 06-23-2011 at 03:30 PM.
06-23-2011
i'd spin the engine so cly 1 is tdc and see where the cam lobes are, im pretty sure they should both be in the closed position., if you drop back in 2 lifters for cly 1, you should be able to tell where the lobes of the cam are.
any way you look at it something is way off some how some where. i've never seen every push rod bent or broken.
it would be a trip if you got a boat engine cam shipped to you, most boat engines run backwards.
06-23-2011
Yea I'll try that procedure with the lifters. I bought this cam off 03impala9c1. He's a very well respected member on many forums.Originally Posted by scottydoggs
06-23-2011
Are you sure that your timing marks are lined up?....because from that picture you posted, it looks to me like they are a tooth off.
06-23-2011
They are. The angle of the camera makes it look like it's off. But even still, a tooth off wouldn't cause this mayhem.
06-23-2011
I'm pretty sure it can.....and has in the past.
06-23-2011
I'm 99.99% sure they are lined up perfectly. Very very very close. The picture looks fine to me?
06-23-2011
I dont think a tooth would do that. If you spin the motor with all of the push rods out does it spin freely? Maybe not a good test if the valves are bent. Befor you go back together with the heads i would borrow a degree wheel and confirm the cam opening/closing times match up with the vs cam specs. Ill look and see if i still have my spec card. Aside from the bellhousing bolt between the eng/trans its really easy to pull one of these motors. Would make removing heads/cam/and oil pan (to check for any metal pieces) a lot easier.
06-23-2011
A quick leak down test would tell u if there is damage to the valves. Would be easier than pulling the heads. Im pretty sure there is going to be valve damage with bent rods like that but u never know.
06-23-2011
If one tooth would do that how do gt's run with a degree of cam advance from the factory>?
06-23-2011
Yeah...don't know what the hell I was thinking. Now I feel like a dumb ass.
06-23-2011
any chance those roller style lifters are taller than a stock lifter?
06-23-2011
stock lifters are roller.
06-23-2011
I took all the spark plugs out and turned the motor by hand with the lifters installed. The piston/cam timing is correct on #1 cylinder. The lifters stay down on compression stroke, the intake lifter comes up on intake stroke, and the exhaust lifter comes up on exhaust stroke. I looked in the valleys in the heads, and the valve stems look fine (from what I can see).
Last edited by Bedwards; 06-23-2011 at 08:28 PM.
06-23-2011
Maybe from repeated trying to start the engine you had so much fuel in there it hydrolocked and bent the pushrods? About the only thing I could think of if the timing was correct. Other questions are what Springs and what rockers are you using again?
http://www.streetfire.net/video/2001...ynp_208097.htm
06-23-2011
Hmmm. Yea that is possible. I'm using G8 springs/retainers and stock rockers.
06-23-2011
My firing order is also correct. I'm soaking my lifters in oil overnight. Tomorrow, I will assemble the valve train and do a compression test on each cylinder, by turning the motor over by hand.
06-23-2011
Just disable fuel and spark and crank it with the starter
06-23-2011
It has no oil. Is that fine? Also, is it fine to do with my LIM off?
| « Previous Thread | Next Thread » |
| Tags for this Thread |
| Bookmarks |
Bookmarks |
