Utt ohhh.....


Oh no !

I wouldnt start that again till you pull the sump off! If you damage the crank your looking at ££££

Providing you can do the work yourself or at least strip the engine yourself it would still be in the mid hundreds to replace the big end shells

Cant see it being bad LMA's in a B18C since they have really hard wearing ones plus they wouldnt just crop up and prob would start off sounding like tappets but end up really really loud ! Dont rule anything out tho unless you know for sure.

If it is the big end knocking and it is as loud and as fluid thru the revs as your saying its maybe already damaged the crank.

Either way lets hope its not as bad as you think and secondly you get it sorted !
 
EK9dan said:
Thanks Kaks,

The knocking is pretty much alongside the RPM.... it will constantly knock whilst the engine is running. Its constant.



I mean i put my ear right up against all parts of the engine and it almost sounds like something is hitting the rocker cover form the inside. and more so on the exhaust side. I hope it is just bad LMA. Even though if im honest havent a clue what lost motion assembly is :lol:
Click to expand...

http://www.ek9.org/forum/engine/6664-lost-motion-assemblies.html

Also check this out...
Think of a lost motion assembly as a shock absorber for the mid- lobe rocker arms. They sit in the head under the mid rockers. What they do is that they give support to the mid rocker (aka the VTEC lobes) during non-vtec rpms. When vtec kicks in, the mid rockers are locked with the primary and secondary rockers, and what happens is that the big lobes (the middle) of the camshaft push the mid-rockers down, which in turn pushes the primary and secondary rocker arms down, which open the valves.

Hopefully that makes more sense... and note, that this is for DOHC VTEC motors. SOHC VTEC motors operate slightly different, but have the same concept of offering support to the vtec rocker.
 
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Lastly, here is a "how to"
...and this is only if the lma's are the issue.
As dan22h says below, check the oil pan for metal shavings as your clicking may be a larger issue, rod or bearing.
 
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hate to say it but in my experience any engine knocking is a bad thing. sounds exactly like what happened to my b18, car suddenly started making a knocking noise (more like a clacking noise if that makes sense). Sounded like it was from the top end but turned out to be a collapsed conrod big end bearing. I drove the car for 2 miles and it deystroyed my crank. you will know straight away as they're will be large copper shavings sitting in the bottom of the sump and in the oil pickup. Any scoring on your crank will effectively write it off.
 
Yeh, LMA's would probably come on more gradually and be a tappety sound as opposed to a knock, pity as it's an inexpensive fix. But like Barry said, don't rule anything out yet.

I wouldn't risk starting it again until you've taken the sump off.

I hope it turns out to be something simple and inexpensive and there aren't any gremlins in the sump.
 
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Well again thanks for all the advise from everyone, really appreciate the help. When ive got a spare moment, most probably this Saturday i will take the Sump off and update this thread with hopefully finding nothing in the sump.

I have a bad feeling to be honest. The noise sounds horrible. The engine has been just too reliable in the time ive had it, track days, weekend racing etc etc.

We shall see.

PS.. Ive tried repping you lot but i cant, i need to spread the love. weird.
 
sounds like the shells. they are easy to change. same happened to my mates b16a.
 
Shells= bearings Tama :)

Man this is such a pain, i hope it gets sorted soon. Bottom end problems are by far the worst, everything has to be so presice.
 
yeah tis definitely a bit of a pain,

And the fact im not a mechanic so internal work/stripping engines isnt something im going to start doing on my civic is just a bit more of a pain + more money. And im trying to save. Sods law.

Thanks Rich
 
Its ok my friend :) just make sure you let us all know how you get on.
 
Providing your crank isnt damaged and your rod/rods haven't gone oval it shouldn't be a expensive fix. Cleaning the block out will be important, last thing you want is fragments of metal making there way to your new bearings.
 
...but the night prior to taking the engine apart, drink a few shots of gin, will help with sleep. ;) lol

Good luck with tracking your issue down.
 
if it does turn out to be your bottom end i would advise checking your oil pump as the metal fragments can damage the pump. Apart from that you shouldn't have to worry about fragments in the engine as the oil filter will remove any particles before they reach the vital components.
 
Mate you need a metal rod and cup your hand over the end and put your ear up against it. noise will travel and will sound like its coming from all over the engine. just place the rod in different places and you will hear where its coming from, hope its nothing major, but ive never heard of LMA's knocking but again hopefully its not big ends.
also even if theres enough oil ive heard of the oil pumps packing up just so your aware of it.

good luck
 
Right ive just taken my sump off and there is no signs of metal shavings/particles of any kind. Completely smooth............

So now what? :confused:
 
Dip deeper, remove oil pickup and windage tray to expose the crank then one by one grab a rod cap and see if you can make it rattle much by moving your hand. A very small amount of movement is normal but if you come across one or two moving more than the others then you have a problem
 
Vtec6000 said:
Dip deeper, remove oil pickup and windage tray to expose the crank then one by one grab a rod cap and see if you can make it rattle much by moving your hand. A very small amount of movement is normal but if you come across one or two moving more than the others then you have a problem
Click to expand...

Ok mate thank you.

I'll get at it tomorrow and update, had enough today. Ha
 
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