What is this?

What is this?

Author
Discussion

TwinKam

Original Poster:

2,937 posts

94 months

Sunday 29th January 2017
quotequote all
'98 4.2
Found this in my drained oil... does anyone who's had one of these apart recognise this? ('Expensive', is not a desired answer wink)
It looks as though the ends were once spot welded to something, forming a 'bridge', not unlike the top fastener on a pair of trousers.






Edited by TwinKam on Sunday 29th January 16:17

phazed

21,844 posts

203 months

Sunday 29th January 2017
quotequote all
That is interesting.

I assume you're just getting started on it now?

TwinKam

Original Poster:

2,937 posts

94 months

Sunday 29th January 2017
quotequote all
Hi Peter, yes, I thought it was about time I did! Thankfully that was the only lumpy bit!...

phazed

21,844 posts

203 months

Sunday 29th January 2017
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Good luck with your investigations.

ukkid35

6,138 posts

172 months

Sunday 29th January 2017
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Don't assume it has to have been part of the engine, it's entirely possible that it could have been dropped by someone, perhaps when working on the valve shims.

There's lots of room for random objects to find their way down to the sump.


tofts

411 posts

155 months

Sunday 29th January 2017
quotequote all
foreign.

closest thing would be a pin from a needle bearing but its the wrong shape. its probably something off a tool used when woring on the engine.

Not worth worrying about

TwinKam

Original Poster:

2,937 posts

94 months

Sunday 29th January 2017
quotequote all
Thanks Paul, that had crossed my mind, it doesn't look like any part of an engine that I can think of and I've had a fair few apart, but never an AJP8.
I was going to start a thread concerning the most random item found in the valley, just a couple of coil bolts and a deep fried bee in mine... rather disappointing!

TwinKam

Original Poster:

2,937 posts

94 months

Sunday 29th January 2017
quotequote all
Thanks for your vote of confidence too, Jody. No, it definitely was never a needle roller in a previous life.

ukkid35

6,138 posts

172 months

Sunday 19th February 2017
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Disappointing!



TwinKam

Original Poster:

2,937 posts

94 months

Sunday 19th February 2017
quotequote all
Is that a lock-tab lurking in the darkness?

ukkid35

6,138 posts

172 months

Monday 6th March 2017
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TwinKam said:
Is that a lock-tab lurking in the darkness?
It's a fairly beat up washer, and it isn't coming out anytime soon.

However it's been captured by the plug magnet so I doubt it can do any more damage.

Fastpedeller

3,848 posts

145 months

Monday 6th March 2017
quotequote all
TwinKam said:
'98 4.2
Found this in my drained oil... does anyone who's had one of these apart recognise this? ('Expensive', is not a desired answer wink)
It looks as though the ends were once spot welded to something, forming a 'bridge', not unlike the top fastener on a pair of trousers.






Edited by TwinKam on Sunday 29th January 16:17
It looks like a straightened staple to me! I am being serious.

TwinKam

Original Poster:

2,937 posts

94 months

Monday 6th March 2017
quotequote all
ukkid35 said:
TwinKam said:
Is that a lock-tab lurking in the darkness?
It's a fairly beat up washer, and it isn't coming out anytime soon.

However it's been captured by the plug magnet so I doubt it can do any more damage.
Looking at that again, Paul, it looks to me like the drive-tab of a 'helicoil' fitted in that thread...

TwinKam

Original Poster:

2,937 posts

94 months

Monday 6th March 2017
quotequote all
Fastpedeller said:
TwinKam said:
'98 4.2
Found this in my drained oil... does anyone who's had one of these apart recognise this? ('Expensive', is not a desired answer wink)
It looks as though the ends were once spot welded to something, forming a 'bridge', not unlike the top fastener on a pair of trousers.






Edited by TwinKam on Sunday 29th January 16:17
It looks like a straightened staple to me! I am being serious.
Thanks Fastpedeller, but no, it's not a staple.
I don't think it's been altered by passing through the engine ie hasn't been bent or straightened, and the areas of flattening at each end are identical, it's definitely been made in that form.
I think ukkid was correct when he suggested that it was foreign to the engine, could be from a tool.

tofts

411 posts

155 months

Monday 6th March 2017
quotequote all
I think its a retainer for an electrical connector, just not a JPT one thats used on the TVRs. My first though

Unless it could be from a needle roller bearing, (pretty sure its not though) I'm fairly confident its foreign.

tangerinedream

146 posts

99 months

Friday 10th March 2017
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Foreign = Bad... it's like effing Brexit all over again...

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

TwinKam

Original Poster:

2,937 posts

94 months

Friday 10th March 2017
quotequote all
tangerinedream said:
Foreign = Bad... it's like effing Brexit all over again...

http://www.pistonheads.com/gassing/topic.asp?h=0&a...
In this instance, Foreign = Not belonging in this place... oh dear... that'll be the next word to be banned by the PC brigade then! laugh

TwinKam

Original Poster:

2,937 posts

94 months

Thursday 23rd March 2017
quotequote all

So, sump removed today (with the block upright) and found this little lot, all ferrous. Another 10 of the same stapley things (incl one broken) to add to the original that came out with the drained oil, and enough slightly curved bits to make an 88mm (eek) diameter circle... and some to spare... Of course, there may have been more that fell out with a previous oil change.
I've not taken the heads off yet, but what I can see of the bores and pistons is perfect, all skirts and lower ring lands are intact, the outsides of the skirts (visible when pistons are BDC) are like new with no scuffing whatsoever, no scratches in any of the bores, in fact the cross-hatching is still present. Therefore I can't see it being bits of ring material.
On a positive note, I had a couple of caps off and the shells are good. So as far as the oil starvation situation goes, I think I got away with it (see separate thread).
But this debris is bothering me. Your opinions please, Gents...

TwinKam

Original Poster:

2,937 posts

94 months

Thursday 23rd March 2017
quotequote all

Oh, I also found these ...top bolt and bush from the long OS chain guide.
Considering what it had to go past to get into the sump, I consider myself pretty lucky there too!

Thekraken

91 posts

99 months

Thursday 23rd March 2017
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From a previous post there was an outside chance of it being foreign debris......but now......eeekkkk!!! Doesn't look at all good!!! Has to have come from somewhere......and you make an excellent case for a lower ring giving up the ghost!!!!
I've fished odds and sods out of the v of mine .. but you win hands down the game of worrying engine debris top trumps.......
Any feed back from Powers as to what is could be ??? I'd want Doms opinion....