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| hans hartman |
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phongus wrote: EFFUTURA4.05SP wrote: If that is the play between the journal and bearing its f**k BIG time!! It isnt a loose retaining plate? From what I could see...the plate doesn't seem loose, but then again I may be thinking of a different part. I'll probably remove the sprocket tomorrow and see how it looks like behind it. Pretty sure the block is buggered. can they bore and bush it,at that failure rate ,blocks will become rare.
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| phongus |
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hans hartman wrote: phongus wrote: EFFUTURA4.05SP wrote: If that is the play between the journal and bearing its f**k BIG time!! It isnt a loose retaining plate? From what I could see...the plate doesn't seem loose, but then again I may be thinking of a different part. I'll probably remove the sprocket tomorrow and see how it looks like behind it. Pretty sure the block is buggered. can they bore and bush it,at that failure rate ,blocks will become rare. Well I am going to pull everything out and then take it to the engine rebuilder to see what they got to say. I am hoping they can bore it out, and press something in, but that just sounds expensive to me.
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| hans hartman |
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get a quote to,bore,bone,deck,clean and fix it and a new shaft
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| EFFUTURA4.05SP |
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Well My new engine had 270 000 ks and my old one had 360 000ks and either had any play so id be looking at the oil galeries that feed the bearing for blockages too.
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| phongus |
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EFFUTURA4.05SP wrote: Well My new engine had 270 000 ks and my old one had 360 000ks and either had any play so id be looking at the oil galeries that feed the bearing for blockages too. I think it was the chain tension to be honest. I replaced the camshaft sprocket on that engine without checking the tensioner. When I started to pull things apart, the piston of the tensioner assembly was stuck in the timing case...I had to hammer it out  .But I will have a look at all the galleries to make sure they are clear too. Thanks 
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| hans hartman |
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phongus wrote: EFFUTURA4.05SP wrote: Well My new engine had 270 000 ks and my old one had 360 000ks and either had any play so id be looking at the oil galeries that feed the bearing for blockages too. I think it was the chain tension to be honest. I replaced the camshaft sprocket on that engine without checking the tensioner. When I started to pull things apart, the piston of the tensioner assembly was stuck in the timing case...I had to hammer it out .But I will have a look at all the galleries to make sure they are clear too. Thanks .22rifle bore brush and any larger after the block cleaning,if you can get
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| macxr8 |
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Age: 55 Posts: 451 Joined: 3rd Jan 2005 Ride: AU XR6 with BF Turbo engine Location: Sydney |
there is a bush you can get to repair the block if its damaged too much. however the cost of installing it, can sometimes outweigh the price of a 2nd hand block
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| phongus |
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macxr8 wrote: there is a bush you can get to repair the block if its damaged too much. however the cost of installing it, can sometimes outweigh the price of a 2nd hand block Yeah was concerned with the cost involved if they do repair it. I'll find out when I have some time off during the week and take the block to the specialist. Took the auxiliary shaft off the block and found the hole has been worn out. I have attached images so you can have a look for yourself. (Images haven't been resized...so a little big if you're browser doesn't resize it to fit) First is the auxiliary shaft itself. It has pits on the journal and isn't very smooth...I say it is cactus.  Secondly, the hole in the block. Front on...you can see on the right of the image the hole is tapered as it should, while the left has none what so ever...  Lastly, a shot of the hole on an angle revealing the sharp edge. The hole was pretty much carved out leaving about 2mm deep lips...not healthy.  So all in all, the block is stuffed at the auxiliary shaft...might be able to fix it or not...but will be a while before I can find out. In the mean time I might see if there are cheap blocks going around.
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
You caught that just in time.
I've had a thought about preventing it. If you can get a dual race roller bearing with an OD that fits a good condition block, You could have the shaft turned down and use a slight interference fit on the shaft. That should fix it for good. At the same time you could 'slot' original bearing bore to provide a jet of oil on to the dizzy drive. |
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| hans hartman |
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phongus wrote: macxr8 wrote: there is a bush you can get to repair the block if its damaged too much. however the cost of installing it, can sometimes outweigh the price of a 2nd hand block Yeah was concerned with the cost involved if they do repair it. I'll find out when I have some time off during the week and take the block to the specialist. Took the auxiliary shaft off the block and found the hole has been worn out. I have attached images so you can have a look for yourself. (Images haven't been resized...so a little big if you're browser doesn't resize it to fit) First is the auxiliary shaft itself. It has pits on the journal and isn't very smooth...I say it is cactus. Secondly, the hole in the block. Front on...you can see on the right of the image the hole is tapered as it should, while the left has none what so ever... Lastly, a shot of the hole on an angle revealing the sharp edge. The hole was pretty much carved out leaving about 2mm deep lips...not healthy. So all in all, the block is stuffed at the auxiliary shaft...might be able to fix it or not...but will be a while before I can find out. In the mean time I might see if there are cheap blocks going around. thrust and no oil pressure=wear
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| EFFUTURA4.05SP |
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Damn!
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
hans hartman wrote: phongus wrote: macxr8 wrote: there is a bush you can get to repair the block if its damaged too much. however the cost of installing it, can sometimes outweigh the price of a 2nd hand block Yeah was concerned with the cost involved if they do repair it. I'll find out when I have some time off during the week and take the block to the specialist. Took the auxiliary shaft off the block and found the hole has been worn out. I have attached images so you can have a look for yourself. (Images haven't been resized...so a little big if you're browser doesn't resize it to fit) First is the auxiliary shaft itself. It has pits on the journal and isn't very smooth...I say it is cactus. Secondly, the hole in the block. Front on...you can see on the right of the image the hole is tapered as it should, while the left has none what so ever... Lastly, a shot of the hole on an angle revealing the sharp edge. The hole was pretty much carved out leaving about 2mm deep lips...not healthy. So all in all, the block is stuffed at the auxiliary shaft...might be able to fix it or not...but will be a while before I can find out. In the mean time I might see if there are cheap blocks going around. thrust and no oil pressure=wear You couldn't blame oil pressure unless the front main bearing was stuffed like that too. |
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| phongus |
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The front main bearing seems to be good...albeit I haven't removed it, there doesn't seem to be any play on it.
I still believe, it was due to a very tight timing chain. Since the timing chain tensioner was stuck tensioned, the chain would have been tight and pulled on the auxiliary shaft gear more towards the exhaust side, hence the worn out part of the auxiliary hole towards the exhaust side. But in saying that, there doesn't seem to be any damage to the front main gear/bearing part from what I could see...crankshaft journals are much tougher (I imagine) than the auxiliary shaft so it found the path of least resistance first and caused damage that way? I now know why this engine died though...
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| bry40l |
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Quote: the chain would have been tight and pulled on the auxiliary shaft gear more towards the exhaust side, hence the worn out part of the auxiliary hole towards the exhaust side .altho i dont know alot about engines this seems like what could of caused it having so much pressure forced to one side
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| hans hartman |
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phongus wrote: The front main bearing seems to be good...albeit I haven't removed it, there doesn't seem to be any play on it. I still believe, it was due to a very tight timing chain. Since the timing chain tensioner was stuck tensioned, the chain would have been tight and pulled on the auxiliary shaft gear more towards the exhaust side, hence the worn out part of the auxiliary hole towards the exhaust side. But in saying that, there doesn't seem to be any damage to the front main gear/bearing part from what I could see...crankshaft journals are much tougher (I imagine) than the auxiliary shaft so it found the path of least resistance first and caused damage that way? I now know why this engine died though... yep, thats the thrust and bore bore wear loses pressure,only supplies oil lubrication and wear removal of metal particles
_________________ R.I.P HANS HARTMAN |
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