Does this sounds like a loose liner or stuck lifter/ bad rockers or valves?
TReK
Joined: Jul 2017
Posts: 3,387
Likes: 488
But, that also coincides with the other parts of the engine, heads, intake, being cleaned and/or new parts being used.
They had the engine apart, thus replacing, rebuilding, using different parts and putting it all back together.
Just because the noise stopped doesn't mean it was in fact because of the pinned liners.
I'm NOT saying it cant happen, I'm saying, it doesn't happen as often as people make it out to be.
These are engines, they have the same noises and go through the same faults as every other V8. Sticky lifters, oil buildup, metal fatigue, the list goes on and on...
By jumping to the "pinned liner" solution all the time really paints a bad picture for our cause. 3 people I know were told they had a liner problem. Not 1 of us actually had that problem...it was the valve train or lifters etc.
What's really ironic, we bought our rover, I think it had 90,000 miles on it. It's been overheated couple times, always run rotella, or some form of 15/40, change my fluids every year (other than oil) and yes ALL the fluids. It had a tick when I bought it, had some oil, varnish looking buildup inside the engine, when I did the heads I noticed the little holes that were sealed shut. I poked them and the crystalized oil fell out, engine sounds amazing still and now it has 230,000.
What I was saying is, the pinning the liners might line up with rebuilding the engine and putting other parts in it, thus making you think, it was the liners.
I
They had the engine apart, thus replacing, rebuilding, using different parts and putting it all back together.
Just because the noise stopped doesn't mean it was in fact because of the pinned liners.
I'm NOT saying it cant happen, I'm saying, it doesn't happen as often as people make it out to be.
These are engines, they have the same noises and go through the same faults as every other V8. Sticky lifters, oil buildup, metal fatigue, the list goes on and on...
By jumping to the "pinned liner" solution all the time really paints a bad picture for our cause. 3 people I know were told they had a liner problem. Not 1 of us actually had that problem...it was the valve train or lifters etc.
What's really ironic, we bought our rover, I think it had 90,000 miles on it. It's been overheated couple times, always run rotella, or some form of 15/40, change my fluids every year (other than oil) and yes ALL the fluids. It had a tick when I bought it, had some oil, varnish looking buildup inside the engine, when I did the heads I noticed the little holes that were sealed shut. I poked them and the crystalized oil fell out, engine sounds amazing still and now it has 230,000.
What I was saying is, the pinning the liners might line up with rebuilding the engine and putting other parts in it, thus making you think, it was the liners.
I
Oh, gotcha, and I don't disagree.
I was really leaning towards a bad liner(s), but after pulling the heads, I see no signs of it.
I still haven't had time to take the short block apart, but I'm now thinking it must be a bearing, or maybe, maybe even a piston skirt(s).
The tapping is nothing like a typical bearing knock, or maybe it's just how the sound resonates through the aluminum.
In a way I'm glad I have this problem, as I really want to know the cause. Hopefully I'll find some definate proof by the weekend.
I'll post what I find, with pics.
In the meantime, the engine is on the stand waiting.
Camel Trophy
Joined: Oct 2016
Posts: 4,867
Likes: 1,410
From: Michigan
I'd doubt it would be piston skirt slap, since it does it more after it gets warm. Usually, you get piston slap on start up, and as the piston grow (expends from heat) it quiets down. But, you have the engine out...so you will be able to verify any of this by measuring bore and checking condition of pistons.
You'll know a lot more once you get that front cover off, too.
Hopefully, you find the smoking gun.
Brian.
You'll know a lot more once you get that front cover off, too.
Hopefully, you find the smoking gun.
Brian.
Baja
Joined: Aug 2013
Posts: 6,905
Likes: 792
From: Huntington Beach CA
Just reading the last page, not sure if it’s been mentioned.
Check the cam bearings. If they have walked that wil cause ticking. It’s crazy how everyone talks about slipped liners, I rarely seee them.
Check the cam bearings. If they have walked that wil cause ticking. It’s crazy how everyone talks about slipped liners, I rarely seee them.
TReK
Joined: Jul 2017
Posts: 3,387
Likes: 488
I'd doubt it would be piston skirt slap, since it does it more after it gets warm. Usually, you get piston slap on start up, and as the piston grow (expends from heat) it quiets down. But, you have the engine out...so you will be able to verify any of this by measuring bore and checking condition of pistons.
You'll know a lot more once you get that front
Hopefully, you find the smoking gun.
Brian.
You'll know a lot more once you get that front
Hopefully, you find the smoking gun.
Brian.
I agree on the pistons.
I would also think they would make more noise cold than hot. The tap doesn't sound like pistons either.
It was in the article linked in this thread, so I thought it needs to be confirmed. I was going to measure them anyway.
I already replaced a cracked oil pump, and the sound remained, replaced the timing chain too, and gears looked new, so no mystery under the cover.
Flex plate looks new as well, and was extremely tight, so no noise there.
Hopefully today or tomorrow I'll have time to finish taking it apart. I need to go borrow some steel numbered punches from my Dad, so I can number the connecting rods before I remove them.
Time is my biggest problem.
Last edited by Sixpack577; Jan 27, 2018 at 09:53 AM.
TReK
Joined: Jul 2017
Posts: 3,387
Likes: 488
Maybe one is burnt or spun, but none have walked out, I can clearly see that.
TReK
Joined: Jul 2017
Posts: 3,387
Likes: 488
I did, and they were clean(like the rest of the inside of the engine). As I replaced the rocker shafts too, even though the old ones were good.
Rockers look good and show normal wear where they contact valve stems too.
Rockers look good and show normal wear where they contact valve stems too.