Bent Rod Ls-1
Thread Starter
Pro
Joined: Apr 2004
Posts: 719
Likes: 21
From: Miami Fl
yes i removed the keepers and pulled them out they are all straight and the springs are good too. they move freely in the guide.
This is my theory for the past 100 miles or so i've been hearing a sound a weird sound like metal on metal. I think that roller on that lifter was starting to lock up far before i ever reved the car the day that i busted the rod. Slowly i am sure the roller got more and more stuck eventually flatting it out, and when my dumb *** reved the car the roller might have decided to roll pas the flat part causing excessive lift and a busted rod and a cracked guide.
Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
yes i removed the keepers and pulled them out they are all straight and the springs are good too. they move freely in the guide.
This is my theory for the past 100 miles or so i've been hearing a sound a weird sound like metal on metal. I think that roller on that lifter was starting to lock up far before i ever reved the car the day that i busted the rod. Slowly i am sure the roller got more and more stuck eventually flatting it out, and when my dumb *** reved the car the roller might have decided to roll pas the flat part causing excessive lift and a busted rod and a cracked guide.
This is my theory for the past 100 miles or so i've been hearing a sound a weird sound like metal on metal. I think that roller on that lifter was starting to lock up far before i ever reved the car the day that i busted the rod. Slowly i am sure the roller got more and more stuck eventually flatting it out, and when my dumb *** reved the car the roller might have decided to roll pas the flat part causing excessive lift and a busted rod and a cracked guide.
Intermediate
Joined: May 2008
Posts: 35
Likes: 0
From: Orlando FL
I had a roller tip lock up on one of my lifters. Had the same squeak you mentioned. Drove the car about 150 miles like that because it happened when I was out of town and I wasn't sure what was wrong.
Any way, if the cam lobe is not polished any more I would replace it. Mine looked ok but measured .001" less lift when I pulled it out of the car. The surface finish is very very important here and you will be pulling the engine apart in another couple thousand miles with the same lifter gone bad if you don't replace it now.
Any way, if the cam lobe is not polished any more I would replace it. Mine looked ok but measured .001" less lift when I pulled it out of the car. The surface finish is very very important here and you will be pulling the engine apart in another couple thousand miles with the same lifter gone bad if you don't replace it now.
Thread Starter
Pro
Joined: Apr 2004
Posts: 719
Likes: 21
From: Miami Fl
Oh wow did your roller end up flat like mine? Did you have to yank it out with a locking pliar like me too?
I had a roller tip lock up on one of my lifters. Had the same squeak you mentioned. Drove the car about 150 miles like that because it happened when I was out of town and I wasn't sure what was wrong.
Any way, if the cam lobe is not polished any more I would replace it. Mine looked ok but measured .001" less lift when I pulled it out of the car. The surface finish is very very important here and you will be pulling the engine apart in another couple thousand miles with the same lifter gone bad if you don't replace it now.
Any way, if the cam lobe is not polished any more I would replace it. Mine looked ok but measured .001" less lift when I pulled it out of the car. The surface finish is very very important here and you will be pulling the engine apart in another couple thousand miles with the same lifter gone bad if you don't replace it now.
Pro
Joined: Feb 2009
Posts: 651
Likes: 33
From: North Port Florida
I don't have the equipment to do it. I need to buy those gauges first to be able to do the test and get a compressor.
The car idles just perfect man, i've been in cars with bent valves and for starters they idle poorly.
The intermittent squeak is definitely coming from exactly the area that had the worse bent rod, and its consistent with the rpms. I just stopped running it for now and when i pull the head out i will look for any signs of the valves contacting the piston and also check all those rollers and make sure they are rolling with no damage.
The car idles just perfect man, i've been in cars with bent valves and for starters they idle poorly.
The intermittent squeak is definitely coming from exactly the area that had the worse bent rod, and its consistent with the rpms. I just stopped running it for now and when i pull the head out i will look for any signs of the valves contacting the piston and also check all those rollers and make sure they are rolling with no damage.
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Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
That would make the most sense.
Thread Starter
Pro
Joined: Apr 2004
Posts: 719
Likes: 21
From: Miami Fl
I thought of that and that's why i pulled the valve out and checked that it wasn't bent or binding within it's guide.
Can it still get stuck despite the fact that i checked that its moving freely within its guide?
Thread Starter
Pro
Joined: Apr 2004
Posts: 719
Likes: 21
From: Miami Fl
I checked it with a steel straight edge, additionally I spun it around by hand within its guide and against the seat and its good. Once i put the keepers on it it seals great.
I am not the brightest guy but I've had my share of automotive education.
Drifting
Joined: Dec 1999
Posts: 1,541
Likes: 2
From: Raleigh NC
My 2 cents:
The motor was over rev'd and you tagged the pistons. I think I see a
on the piston. Look close. Then you bent the push rods (I count at least three. With no spring pressure on the lifter (no way that severely bent rod was long enough to reach the rocker while the cam was on the base circle) the cam started beating the crap out of it and the lifter tray.
New cam, push rods and lifters....all 16. Hopefully the lifter bore isn't jacked!
The motor was over rev'd and you tagged the pistons. I think I see a
on the piston. Look close. Then you bent the push rods (I count at least three. With no spring pressure on the lifter (no way that severely bent rod was long enough to reach the rocker while the cam was on the base circle) the cam started beating the crap out of it and the lifter tray.New cam, push rods and lifters....all 16. Hopefully the lifter bore isn't jacked!
Thread Starter
Pro
Joined: Apr 2004
Posts: 719
Likes: 21
From: Miami Fl
Well thanks to all of you for your time and expertise!
I've inspected it real close and I still don't buy the fact the piston hit the valve.
As soon as the parts come in I am reassembling and firing it up.
I've inspected it real close and I still don't buy the fact the piston hit the valve.
As soon as the parts come in I am reassembling and firing it up.
Pro
Joined: Feb 2009
Posts: 651
Likes: 33
From: North Port Florida
I was wondering how the oil pressure is on this engine and the oiling to the top?
Thread Starter
Pro
Joined: Apr 2004
Posts: 719
Likes: 21
From: Miami Fl
honestly it looked pretty well oiled, all the rockers and the push rods had plenty of oil. The valve and the valve guide was dry, but that's normal since the valve stem seals are supposed to keep the oil out of there.
thanks!
thanks!
Thread Starter
Pro
Joined: Apr 2004
Posts: 719
Likes: 21
From: Miami Fl
Actually, I didn't. The cam lobe was getting the same amount of lift on that lifter. The surface of the cam was not polished but it wasn't pitted or irregular. I got my finger in there and felt it. I replaced all the lifters on the passenger side and torqued the head down and reassembled it.
If the same thing happens again i'll swap that engine out for another one i have. I hate dealing with with these valve train issues.
The amount of time/ money it would have taken to swap the cam and both heads is something this engine isn't worth.
Its at 160k
Tech Contributor
Joined: Jan 2007
Posts: 19,448
Likes: 1,155
From: Dyer, IN
Actually, I didn't. The cam lobe was getting the same amount of lift on that lifter. The surface of the cam was not polished but it wasn't pitted or irregular. I got my finger in there and felt it. I replaced all the lifters on the passenger side and torqued the head down and reassembled it.
If the same thing happens again i'll swap that engine out for another one i have. I hate dealing with with these valve train issues.
The amount of time/ money it would have taken to swap the cam and both heads is something this engine isn't worth.
Its at 160k
If the same thing happens again i'll swap that engine out for another one i have. I hate dealing with with these valve train issues.
The amount of time/ money it would have taken to swap the cam and both heads is something this engine isn't worth.
Its at 160k
