What's this loud tapping sound from my new engine?

Engine, ignition, fuel, cooling, exhaust

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Re: What's this loud tapping sound from my new engine?

Postby DuckRyder on Sat Nov 07, 2009 4:13 pm

Assuming that the machine work and clearances were good to start with there should be minimal machining of checking or clearances. Plastigauge is cheap, it basically looks like a string, you place a bit of in between the surfaces (like the rod bearing and crank) tighten the cap and then remove the cap, you then compare the now mashed string to a scale on the wrapper to determine the clearance. You'd need to do that on each bearing. It is absolutely imperative that the lifters be kept in order and go back on the same cam lobe...

You'd need a ring compressor and a valve spring compressor to really do it right, you can probably "rent" these locally...

If the main and rod bearings have metal in them then you are going to want to replace the cam bearings too, that means a trip to a machine shop and its highly recommended it be one familiar with FE's.
Robert
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Re: What's this loud tapping sound from my new engine?

Postby robroy on Sat Nov 07, 2009 4:20 pm

Hey Robert, thanks for replying!

DuckRyder wrote:Assuming that the machine work and clearances were good to start with there should be minimal machining of checking or clearances.


That sounds good to me!  Yeah I'm willing to trust that the machining work and clearances were good from the start.  

DuckRyder wrote:Plastigauge is cheap, it basically looks like a string, you place a bit of in between the surfaces (like the rod bearing and crank) tighten the cap and then remove the cap, you then compare the now mashed string to a scale on the wrapper to determine the clearance. You'd need to do that on each bearing. It is absolutely imperative that the lifters be kept in order and go back on the same cam lobe...


Very interesting!  I can imagine using the bearing floss, and I think I could keep the parts in order pretty well.  

DuckRyder wrote:You'd need a ring compressor and a valve spring compressor to really do it right, you can probably "rent" these locally...


These sound like simple tools.  Do you think they're cheap to buy (under $50)?  

DuckRyder wrote:If the main and rod bearings have metal in them then you are going to want to replace the cam bearings too, that means a trip to a machine shop and its highly recommended it be one familiar with FE's.


I see!  So if I needed to replace the cam bearings, what part would I need to bring to the machine shop?  The entire engine, or just the camshaft?  

If it's the entire engine, I might just have them do the whole thing.  If it's a portion that's easy to transport on its own, I can see taking that in separately.  

Thanks very much Robert!!!
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Re: What's this loud tapping sound from my new engine?

Postby DuckRyder on Sat Nov 07, 2009 4:51 pm

Oh, about the metal in the oil...

Yes, some is normal on a new engine, but if you can feel it that is too much. This is why you change the oil right after a cam break in and then again around 500 miles on most rebuilds. Big chunks like moby are not good, I was willing to let moby and his little friend slide because casting flash sometimes does break loose, but finding more is bothersome...

To replace the cam bearings you would have to take the block (bare by this time) to a machine shop, last time I had it done it was about 40 bucks plus parts (for a bit over 80 all in all IIRC).

Other than the cam bearings it should be a simple disassemble, clean, reassemble deal...

$200 or more is probably a closer guess on the compressors.

Tell you what, go to a book store and just read through any rebuild book, the basic principals are the same and I don't recall ever having been in a decent sized book store that didn't have a "How to rebuild your small block Chevy" book. If after that you feel comfortable with it, and you'll cover shipping both ways (50.00 or so I'd guess) I'll send you the compressors, the book and anything else I think might help you out. Remember you basically won't be reconditioning anything, just taking it apart and reassembling.

I'm a little concerned about trying to help you determine how the crank and cam looks from pictures, particularly me since I'm almost always on the laptop.
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Re: What's this loud tapping sound from my new engine?

Postby george worley on Sat Nov 07, 2009 4:56 pm

You would need to take the block and camshaft to the machine shop for sure. Rather the block has to be stripped down for the bearings to be replaced I don't know for sure. Iv'e always had mine installed when the block was bare. Ask the machinist he would know.
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Re: What's this loud tapping sound from my new engine?

Postby robroy on Sat Nov 07, 2009 6:34 pm

Hey Robert and George, thanks very much for replying!

Robert, in your estimation, about how much does a stripped down FE block weigh?  Can a guy pick it up by himself?  I'm just wondering how easy it is to move around.  

And thanks very much for the offering to loan me your stuff!  If it comes to that I might take you up on it.  

I also think looking at a basic rebuild book would give me a pretty good idea.  Come to think of it, I happen to already own a copy of the Haynes, "FORD Engine Overhaul Manual."  It says, "Includes 255 * 260 * 289 * 302 * 351 * 360 * 390 * 400 * 428 * 429 and 460."  Never thought I'd be looking in it!

George, thanks for the confirmation about needing to take some stuff to the machine shop!  

I'm cracking open the oil filter now and will post photos of that soon!  So far, all the oil that I dumped out of the filter looks kind of dark and nasty, but I've seen zero metal chunks falling out.  Maybe they're all still in there!  We shall see.

Thanks again for the superb help!
Robroy
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Re: What's this loud tapping sound from my new engine?

Postby DuckRyder on Sat Nov 07, 2009 6:53 pm

robroy wrote:Robert, in your estimation, about how much does a stripped down FE block weigh?  Can a guy pick it up by himself?  I'm just wondering how easy it is to move around.  


150 - 200 lbs Maybe, it is a one man and a hoist or a two man job...

You can use the hoist to slide it off the engine stand if you have to, then there is usually someone at the machine shop that will help you unload it, at least around here there is... In my experience the stand is usually about the right height that you can man handle it in and out of a truck
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Re: What's this loud tapping sound from my new engine?

Postby Ranchero50 on Sat Nov 07, 2009 8:21 pm

Robroy, Haynes and Chiltons are 'good' for telling you what to do, terrible for telling you 'how' to do it.

Jamie
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Re: What's this loud tapping sound from my new engine?

Postby robroy on Sat Nov 07, 2009 8:23 pm

'Afternoon Robert thanks for replying!

DuckRyder wrote:150 - 200 lbs Maybe, it is a one man and a hoist or a two man job...

You can use the hoist to slide it off the engine stand if you have to, then there is usually someone at the machine shop that will help you unload it, at least around here there is... In my experience the stand is usually about the right height that you can man handle it in and out of a truck


Ah-ha!  I see!  That sounds a lot more doable than the entire engine.  Thanks!

I've made these observations about the oil filter:

     
  1. The oil that poured out from the center of the can (from the interior of the filter, before I cracked it open) was dark, but completely free of shavings, glittery, or other debris.  It looked ultra clean.
     
  2. The oil that came out from inside of the can (from the exterior of the filter) had LOTS of glitter and some metal shards in it.  Mostly glitter so far.  It sparkled brightly in the sun, like glittery finger nail paint (not that I know, guys).

I found that a combination of a chisel punch and tin spins worked OK to get the filter apart, but it wasn't ideal.  I think it caused very few, if any metal fragments to get inside though.

ImageImage
http://www.robroygregg.com/Number50/IMG_4414z.JPG http://www.robroygregg.com/Number50/IMG_4415z.JPG

Image Image
http://www.robroygregg.com/Number50/IMG_4416z.JPG http://www.robroygregg.com/Number50/IMG_4417z.JPG

As soon as I started cutting the case off, a bunch of extra oil started dumping out.  And this oil was NASTY.  It was full of glitter and had a bunch of metal shards in there too.  I'm not sure how well you'll be able to see it from these photos, but it's sure in there!

ImageImage
http://www.robroygregg.com/Number50/IMG_4422z.JPG http://www.robroygregg.com/Number50/IMG_4423z.JPG

ImageImage
http://www.robroygregg.com/Number50/IMG_4418z.JPG http://www.robroygregg.com/Number50/IMG_4419z.JPG

Here's the can all cracked open, at last!

Image
http://www.robroygregg.com/Number50/IMG_4420z.JPG

The oil that was left inside the can (from outside of the filter element) was NASTY!  I don't think these photos do it justice but you'll get the idea:

Image
http://www.robroygregg.com/Number50/IMG_4424z.JPG

Image
http://www.robroygregg.com/Number50/IMG_4427z.JPG

Image
http://www.robroygregg.com/Number50/IMG_4428z.JPG

Now here's the oil I dumped out before taking the can apart (it came from the center of the filter element).  It is perfect!  The few tiny flecks you see in there are just bits of dried paint that blew in the bucket (I checked them out very closely).  

ImageImage
http://www.robroygregg.com/Number50/IMG_4453z.JPG http://www.robroygregg.com/Number50/IMG_4457z.JPG

The filter element looked unhurt externally, although I can see plenty of metal flakes stuck in it!

ImageImage
http://www.robroygregg.com/Number50/IMG_4439z.JPG http://www.robroygregg.com/Number50/IMG_4441z.JPG

Knowing that the oil from the inside of the element looked immaculate (100% free of metal debris and glitter) makes me think that whatever I've discovered on the heads was probably not caused by my windage tray mistake.  

What do ya'll think?

Also, should I slice that paper element open?  And if so, would the ideal slice be parallel or perpendicular to the grooves?

Thanks very much for your generous help!
Robroy
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Re: What's this loud tapping sound from my new engine?

Postby Ranchero50 on Sat Nov 07, 2009 8:44 pm

The sludge on the outside is the dirty stuff.  Should be clean inside (like the oil that poured out first).  At this point I wouldn't bother with the filter anymore.  What's scary to ponder is all that crap came through the pump and was getting flung around inside the motor while the crank was chewing on the windage tray.

Motor teardown (start in upright position):
remove rocket shaft stand bolts to remove rockers (loosen adjuster studs first)
remove pushrods (keep in order)
remove harmonic balancer from crank
remove timing chain cover
remove timing chain (fuel pump eccentric too)
remove distributor
remove intake
remove lifters
put a long bolt in the end of the cam and remove the cam
rotate crank to get #1 piston all the way down the bore
flip motor upside down
remove #1 cylinder rod cap
tap rod / piston assy away from the crank making sure the rod bolts don't touch the crank
tap the rod piston assy all the way out the bore (catch with other hand)
repeat for other cylinders
remove main crank caps
lift crank out of block (stand on end in a corner)

That's the teardown, scary eh?  Wait until you put it together, we'll have 10-20 pages of threads on that.

Personal suggestion is pull it apart yourself and clean it up, but get someone you trust to put it back together for you.  Get price quptes both ways though, some shops don't like basket cases.

Jamie
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Re: What's this loud tapping sound from my new engine?

Postby DuckRyder on Sat Nov 07, 2009 9:24 pm

That is a pretty impressive oil filter, I think the bypass probably opened and that is how the top end got metal up there, it could not have splashed/slung up there, so either it was pumped up there or there is some thing up there rubbing.

I've been giving this some thought, while I'm sure you can accomplish it, there are some nuances that are going to be hard to explain and there is really no substitute for an experienced hand, I do think you would be better off if you could at least get someone with some experience to come assist. I don't know if that is possible or not.

BTW, after you take the rod cap off, slide a piece of fuel hose over the bolts so they can't scratch the crank.

The Haynes should give you an idea of what is involved, but definitely get the Steve Christ book for the actual build. Reminds me of Dads story about the Clymer manual for the Bultaco (or it could have been a husky or a maico) any way hes removing the clutch basket from the crank the book says "remove the bolt securing the clutch basket to the crankshaft", he tries everything nothing will loosen it, ends up breaking it off. Turns the page and it has "note: this is a left hand thread". Or the time I was trying to look up the freon charge for a Volvo in a Chilton book. The entire A/C section is "Consult a qualified Air Conditioning technician", remind me why I bought this book?

Anyway...

Yeah, I wouldn't worry about doing anything else with the filter, it looks like it saved you from it being much worse, but it does appear that some got past it.
Robert
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Re: What's this loud tapping sound from my new engine?

Postby robroy on Sat Nov 07, 2009 11:51 pm

Hi Jamie and Robert, thanks very much for replying!

Ranchero50 wrote:The sludge on the outside is the dirty stuff.  Should be clean inside (like the oil that poured out first).  At this point I wouldn't bother with the filter anymore.  What's scary to ponder is all that crap came through the pump and was getting flung around inside the motor while the crank was chewing on the windage tray.


I see your point!  I'm just curious to know if the stuff in the heads could have already been there, before my windage tray incident.  Probably not I suppose.

Ranchero50 wrote:That's the teardown, scary eh?


Thanks for that tear down checklist Jamie!!!  

In my ignorance, it is actually not scary to me!  I know that's just because of my funny, easy going attitude about tackling stuff though.  Then when I actually get my hands in to it I find tremendous obstacles at every turn, usually.  But by then I'm too far in to back out!  

Ranchero50 wrote:Wait until you put it together, we'll have 10-20 pages of threads on that.


This I don't doubt!  

Ranchero50 wrote:Personal suggestion is pull it apart yourself and clean it up, but get someone you trust to put it back together for you.  


This is an idea!  By taking it apart I'd get to learn more about how it works, which would interest me.  My only reservation is imagining that most engine builders wouldn't look fondly on a huge box of parts.  Or at least they'd rather receive a put together, working engine to start with.

Ranchero50 wrote:Get price quptes both ways though, some shops don't like basket cases.


That I may do, thanks!

DuckRyder wrote:That is a pretty impressive oil filter, I think the bypass probably opened and that is how the top end got metal up there, it could not have splashed/slung up there, so either it was pumped up there or there is some thing up there rubbing.


You could be right, indeed.  

DuckRyder wrote:I've been giving this some thought, while I'm sure you can accomplish it, there are some nuances that are going to be hard to explain and there is really no substitute for an experienced hand, I do think you would be better off if you could at least get someone with some experience to come assist. I don't know if that is possible or not.


I don't know of anybody who could come help me with it, but that's OK.  I do know of a few guys who have build lots of engines, but they're "fast" guys.  And I'm sure they'd work on the engine in a very "fast" way, if they could even understand why I'd ever crack in to an engine that still ran!  

I see your point though and agree that it would be best to have an expert at least oversee the assembly process, if not do it outright.  

DuckRyder wrote:BTW, after you take the rod cap off, slide a piece of fuel hose over the bolts so they can't scratch the crank.


You know, it's funny that you'd mention this!  Earlier today I spent thirty seconds flipping through the Haynes book, and the ONE thing I looked at was photo of the bolts with those bits of hose on them, and a paragraph about this!  I guess it's an important thing to know!

DuckRyder wrote:The Haynes should give you an idea of what is involved, but definitely get the Steve Christ book for the actual build.


Yeah, that I may do.  I looked at the Christ book on Amazon and it looks really excellent.  I might want to have a copy of it on hand just to know more about my engine, if not to actually re-do it myself!  

DuckRyder wrote:Reminds me of Dads story about the Clymer manual for the Bultaco (or it could have been a husky or a maico) any way hes removing the clutch basket from the crank the book says "remove the bolt securing the clutch basket to the crankshaft", he tries everything nothing will loosen it, ends up breaking it off. Turns the page and it has "note: this is a left hand thread".


Oh my gosh!  That is rich.  

DuckRyder wrote:Or the time I was trying to look up the freon charge for a Volvo in a Chilton book. The entire A/C section is "Consult a qualified Air Conditioning technician", remind me why I bought this book?


Exactly!  It's classic that they'd even have the section.  I guess they were afraid of "shade tree" guys letting all their R-134 or R-12 out in to the air.

I've heard before that the Chilton books were pretty bad and the Haynes books are fairly bad.  Thankfully I stick to the factory shop manual on #50 most of the time!  This Haynes engine rebuild book was given to me by my mother, if I remember correctly.  

DuckRyder wrote:Yeah, I wouldn't worry about doing anything else with the filter, it looks like it saved you from it being much worse, but it does appear that some got past it.


Indeed, that seems to be the most probable explanation for what I'm seeing.  

After seeing that the oil was super clean after passing through the filter, I've been re-thinking my proclamation about this big engine work.  I'm still considering simply cleaning it out as well as I can and letting nature take its course.  

Some reasons to clean it out and take my chances are:

       
  1. It seems entirely possible that after cleaning it out while still in the truck, this engine will have a long, happy service life, despite what I've seen.  
       
  2. On the tops of both heads, I found a grand total of two large flakes and a few smaller flakes.  Most of the rest was pretty tiny.  In my ignorance, that doesn't seem like a lot of metal.  
       
  3. A lot of the metal I'm seeing is probably natural for a brand new engine.  Granted some isn't natural, but I'm guessing that the majority of the tiny glitter bits are natural.
       
  4. I found plenty of metal in the oil pan, but very little anywhere else.  Not knowing more, I'm guessing that a lot of metal either didn't get sucked in to the oil pump, or got lodged in the oil filter.  The contrast between the metal quantity in the oil pan and the rest of the engine is huge.  
       
  5. The time and effort required to remove the engine and re-do it seems similar to the time and effort required to pull and re-do a worn out engine (especially if I'm hiring out the machine work).  So in a sense, I may as well wear it out first.
       
  6. The cost of hiring an engine builder to assemble the engine (or to do both teardown and assemble it) would be non-trivial, I'm guessing.  I'll find out for sure on Monday, but I'm guessing they'd charge at least $1,500 for the work alone.  Maybe I'm way off, but that just seems like a reasonable guess.  
       
  7. There is a chance that, if I went to all the trouble to have the engine pulled all apart again, they'd fine very little metal in there.  And the whole time, effort, and expense wouldn't have actually saved my butt in the end.  

And reasons I can think of to go all the way are:

       
  1. I'd be more likely to enjoy a long engine service life.
       
  2. I may wind up with a more reliable engine.
       
  3. I'd be sure to have greater satisfaction, knowing the engine surely wasn't being unduly damaged by hard driving.  
       
  4. I might have to pay for a deep, full engine rebuild with lots of new parts down the road, and be out $4,000 to $8,000 for the job.  $1,500 now would be easier to swallow than $6,000 in six months!
       
  5. I'd have an opportunity to rip the thing apart and see how it works.  

On Monday I'll call Steve and also FE Specialties and see what advice they have.  Yet it would also help to hear what you guys think about these questions, based on what you've seen.  I know that some of you have answered these in part previously in this thread, but your answers may have changed with the updated information.

If I clean it out as well as I'm able to, flush a bunch of oil changes through it, and drive it:

       
  1. What's the worst that could happen?  And after how many miles?  (Realistically)
       
  2. What's the best that could happen?  
       
  3. What is your personal, best guess as to what would actually happen?

I'm not too worried about having to pay for another full engine rebuild years down the road.  I just want to feel pretty sure that it'll be a ways down the road (years, not weeks)!  

Thanks again for your patience and truly outstanding advice!
Robroy
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Re: What's this loud tapping sound from my new engine?

Postby 70_F100 on Sun Nov 08, 2009 12:37 am

70_F100 wrote:All of the advice I've read here is good, no doubt.   :thup:

I still maintain that the bearings should be checked before buttoning it up.

If there is some embedded metal, a set of bearings is VERY inexpensive insurance against ruining a crankshaft (or worse).

Again, the small amount of time and trouble to check them is, in my opinion, well worth the peace of mind that it will provide.   :pray:

Just my :2cents:


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Re: What's this loud tapping sound from my new engine?

Postby oldschoolrods on Sun Nov 08, 2009 1:37 am

Robroy, I don't have any more to add to whats been said, but what I do to keep stuff in order is make little templates out of cardboard. For example to keep pushrods in order i'll take a piece of cardboard and label it (for example passanger side #1) then go in order.  

Good luck, sorry to hear about your mis-fortunes.
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Re: What's this loud tapping sound from my new engine?

Postby fordfriend on Sun Nov 08, 2009 1:42 am

Great pictures robroy!   :2cents:
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Re: What's this loud tapping sound from my new engine?

Postby DuckRyder on Sun Nov 08, 2009 8:39 am

What's the worst that could happen?  And after how many miles?  (Realistically)
 

The bearing material is soft and particles will embed in it. If there is metal embedded it will scratch the crankshaft possibly damaging it beyond repair. Worst case it is possible it could do enough damage to grab the bearing and turn it in the rod or main cap (called spinning). If one or more bearings were to spin it could damage the block, crank or rods beyond repair. Realistically it is probably most likely it would simply lose oil pressure or start to knock, it could happen in as little as a few thousand miles.

What's the best that could happen?
 

It might be fine.
 
What is your personal, best guess as to what would actually happen?


My guess would be that it would run and perform fine for a reasonable period of time...

It is very difficult to guess because it only takes one good sized particle and the crank is going to look like the oil pump...

I suppose a compromise would be to find out what procedure and spec was used on the main bearings and pull the easiest one for inspection.

The thing is the big chunks could not have pumped up there, they had to have either broken off of somewhere or been left behind during assembly, but the metal flake oil, for the most part the only way it could have gotten there is through the oiling system.
Robert
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