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View Full Version : cheaper chain tensioner



swaser18t
02-15-2014, 05:46 PM
Just seeing what people think of the cheaper non OEM ones? Thoughts comments welcome...

Seerlah
02-16-2014, 05:00 PM
Junk. You don't have to get Audi factory, but there are quality non OEM units out there. What engine code?

redline380
02-17-2014, 09:26 PM
Any other thoughts on this? I am helping this guy take everything apart. When we got the head off, all exhaust valves made contact with the pistons, as well as all center intake valves. The pistons are marked up pretty decent, and I'd think they would cause hotspots. Would like some more opinions though. Hopefully he gets the photos loaded soon.

Also, I noticed the pistons were fairly worn into the bore. The cross hatching was gone in some areas, so I think the bore might be out of round. I do not have a bore gauge to measure it, but I think it is out of spec.

swaser18t
02-17-2014, 09:32 PM
Here are the pictureshttp://img.tapatalk.com/d/14/02/18/eju6ebe2.jpghttp://img.tapatalk.com/d/14/02/18/2eguhugy.jpghttp://img.tapatalk.com/d/14/02/18/5evaje9u.jpghttp://img.tapatalk.com/d/14/02/18/y9u7ama2.jpghttp://img.tapatalk.com/d/14/02/18/2erezabu.jpg

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swaser18t
02-17-2014, 09:37 PM
AEB motor. Had bad compression. Then sounded like chain tensioner before it died. Was throwing a cam position senor code. Timing was off from TDC. Correct me if I'm wrong redline380

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redline380
02-17-2014, 09:45 PM
Yeah, I set the crank at tdc before I pulled everything apart. Piston was not at tdc when the head came off. It is possible t tbelt skipped, but it just doesn't seem plausible to me. Just seems like the CCT was that bad that the timing got that far off.

The CCT had terrible noises upon start up, accompanied by a timing code as Justin noted

Seerlah
02-18-2014, 04:03 AM
I would not use those pistons. But they can be picked up for cheap. Rods and pistons will need to get pulled, then pick up a bore gauge. Problem is they really aren't cheap (can't find a digital one for less than $75). I picked one up when I built my engine and sold it right after. Worth the peace of mind. You know what you are doing Lucas, so a basic rebuild that will include a new CCT. Non-VVT OEM ones are cheap, though.

walky_talky20
02-18-2014, 05:45 AM
Pistons will be fine for a DD, just smooth them out a little. But if significant upgrades will be done, would be nice to replace. But then you're tearing into a [likely] otherwise fine bottom end. The cost effective repair is to leave the pistons alone.

No matter how bad the CCT is, it will not and cannot bend the exhaust valves. It is un-possible. It would have to be incorrect belt timing or a sheared keyway on either the cam or crank to cause that. Intake valve damage can be the CCT, but not exhaust valves.

Believer
02-18-2014, 08:01 AM
I used a stone bit on a dremel and sand paper to bring down the marks on my pistons, i'm confident they'll be just fine. Just need to bring down the high spots on them. Yours are marred a little worse than mine were but I honestly don't think that will be a problem. 20k on my engine without issue since my incident.

You can see some before and after shots in this set: http://flic.kr/s/aHsjFtXZiD

redline380
02-18-2014, 08:03 AM
No matter how bad the CCT is, it will not and cannot bend the exhaust valves. It is un-possible. It would have to be incorrect belt timing or a sheared keyway on either the cam or crank to cause that. Intake valve damage can be the CCT, but not exhaust valves.

Forgot to mention this is a 98 AEB.

I wonder how in the hell the valves made contact then. Like I said, it seemed like the timing was off. maybe there was a broken key. I'll check next time I am there.


The thing is, Justin may want to throw a frankenturbo or something else on in this process. Hence my concern about the pistons. I think he will end up putting forged rods in too. At this point, the head needs all new exhaust valves, and four new intake valves at a minimum, and a CCT.

He is unsure what to do about the bottom end. Like I said, the bore doesn't look great and I suspect it may be out of round. I need to get a bore gauge though. In reality, I think he wants to beef the motor up a little bit in the rebuild process. But then you run into the issue that it may be more cost effective to just get a used motor and get back on the road and build the spare on in the mean time.

redline380
02-18-2014, 03:43 PM
Well I went to the local pick n pull. Lo and behold, a 99 Passat station wagon with an AEB engine. This must be the ONLY b5 ever to see a junkyard that hasn't bent valves on it. The belt was still intact even. Even better, the turbo bolts and intake manifold bolts were already off! All I had to do was take the head bolts out and the coolant flange off.

Unfortunately, I forgot my knife too cut the tbelt. I tried wiggling it around, but it wouldn't come off. So I had to peel the belt off the cam pulley. 10 minutes and some pieces of skin later, great success!

So my thoughts are have the machine shop look over this head and hope it is good. Either that or op is thinking about a whole other engine. If anyone knows of a built 058 for cheap, let me know.

nynoah
02-18-2014, 03:56 PM
I bought a cheap Cam Chain Tensioner... Failed in 2 months. I bought a cheap after market coolant flange for the back of my head. Failed in 5 months. I bought a cheap thermostat flange. Failed in 8 months. I have cost myself more time and energy trying to save a few dollars than it was worth. Buy a quality part or be prepared to never stop fixing the same problem.

swaser18t
02-18-2014, 03:57 PM
If the head checks out that will help a lot. We could maybe build my bottom or find a good bottom to build. Not sure I will have funding to straight buy a built motor. But any which way good score bro

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swaser18t
02-19-2014, 07:28 PM
http://img.tapatalk.com/d/14/02/20/a3yme3yj.jpghttp://img.tapatalk.com/d/14/02/20/2aze8y5u.jpg

Safety first!!!

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redline380
02-19-2014, 07:29 PM
And the winner is......



It would have to be incorrect belt timing or a sheared keyway on either the cam or crank to cause that. Intake valve damage can be the CCT, but not exhaust valves.



Not sure where OP wants to go from here. Thinking about a used motor to get the car back on road and build this one up on the side. Obligatory pics of the carnage, of course. Kind of looks like like PP was resurfaced?? And the flywheel doesn't appear to be in the best of shape either






http://i696.photobucket.com/albums/vv328/redline380/temporary_zpsea67b218.jpg
http://i696.photobucket.com/albums/vv328/redline380/temporary_zps8acae63d.jpg
http://i696.photobucket.com/albums/vv328/redline380/temporary_zps783d8c90.jpg
http://i696.photobucket.com/albums/vv328/redline380/temporary_zps23827d88.jpg
http://i696.photobucket.com/albums/vv328/redline380/temporary_zpsff8cd8c4.jpg
http://i696.photobucket.com/albums/vv328/redline380/temporary_zpsca83a7fb.jpg

walky_talky20
02-19-2014, 07:47 PM
Yay, I win!

Wait, what do I win again? Some bent valves? Oh...[>_>]

Cue discussion of dowel pin and/or IE press-fit crank gear in 3...2...

redline380
02-19-2014, 07:54 PM
Yay, I win!

Wait, what do I win again? Some bent valves? Oh...[>_>]

Cue discussion of dowel pin and/or IE press-fit crank gear in 3...2...

I forgot to mention... The crank gear was missing any marks of VW or OOOO that you normally see. It did have SHW on it though. Wonder what kind of aftermarket crap that is?

BTW, is the key way on the crank fixable?

swaser18t
02-19-2014, 09:13 PM
I'm honestly thinking that if this used motor is good enough that we slap a timing kit on it and whatever else we need to bolt it in. Had that head that you got checked out and if its good slap that on it. Stick some money into a flywheel and possibly rebuild the k03. Then build what I have over time. All depends on the shape of that used motor.
Option 2 is that crate motor but still would have a timing belt kit and clutch work to think about

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redline380
02-20-2014, 06:05 AM
I really think the used motor will be the cheapest, fastest, and easiest way of getting the car back on the road. We could skip a few parts like the pcv system, and you could put that saved money into a built engine and update that sort of stuff when youd put that one in

swaser18t
02-20-2014, 06:07 AM
I agree. Guess it depends on the shape of the other one. Any which way I'll order some stuff tonight

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