The Toyota Landcruiser Owners Club

[Towpack]

Fitted new big end bearings today.Trying to find the source of an unusual clicking/ticking noise but new bearings has made no difference.Wasn't a waste of time and money though as No.6 bearing didn't look too good.The journal looked OK.Slight wear/polishing on the rest.The surface of No.6 looked sud-standard compared to the others,suffereing from pitting in addition to the score mark in the centre.

http://uk.geocities.com/phil.swann@btopenworld.com/Bigends.jpg
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Phil


1998 HDJ80 Amazon VX 4.2TD
2004 Yamaha R1 (Sold)
2011 Ducati 1198SP (Sold)
2012 kawasaki ZZr1400
2002 Honda XR650R (BRP)- STOLEN GRRRRR!!!
2010 Husaberg FE570....YIPPEEEEE!!!!
2003 GT XCR3000
1995 Border Collie-Passed away 23-5-2011

[Google]

[DaveN]

That pitting looks like our old friend. I was under the impression that Toyota had changed the material in the later engines, hence the superceded part number, but it looks like you've got the start of the pitting problem.

How many miles has it done? It may be that the pitting looks worse than it is, but to me any pitting is a potential failure sooner or later.

I wonder what causes it, as it isn't abrasion or oil starvation. A guy on one of the aussie sites reckons it's the oil additives (or lack of them) in oil sold outside of Japan. He says diesel oil in Japan is made to a certain spec, and as a result they apparently don't have any problems, wheres only a very few oils sold outside japan meet the same spec. Sounds plausible, though the Japs don't tend to do as many miles as the aussies. Some blame the higher temps in aus, but in theory the engines run pretty much the same temperature wherever they are in the world (88 deg).

Doubt it will make any difference to your noise though. I did mine twice, as I only really noticed the noise after I did them the first time, so fearing the worse, I did them again just to be sure.

[Towpack]

Running your finger over the bearing surface you can just feel the pitting in the surface.No doubt it would have got worse if left long enough.They've done 51k.
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Phil


1998 HDJ80 Amazon VX 4.2TD
2004 Yamaha R1 (Sold)
2011 Ducati 1198SP (Sold)
2012 kawasaki ZZr1400
2002 Honda XR650R (BRP)- STOLEN GRRRRR!!!
2010 Husaberg FE570....YIPPEEEEE!!!!
2003 GT XCR3000
1995 Border Collie-Passed away 23-5-2011

[lucky]

Just changed mine this afternoon. Took about 3 1/2 hours total, nothing wrong with the bearings I took out at all - looked almost new with just a very light scoring on two (looked like what would happen if you ran a bit of 600 grit wet and dry over them).

Still at least I know they are good now. Also meant that I sealed the slight leak on the sump.

Wasn't a bad job at all, hardest piece is getting the sump back on without damaging the silicon bead.
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1999 Land Cruiser Amazon VX Active 4.2TD Auto
Gloucestershire 4x4 Response
Landcruiser-rocks

[DaveN]

It's surprising there is no pitting on your shells, Lucky. Just goes to show the unpredictability of it all.

[500SEC]

Phil, very interested to read you note about the ticking noise, as I have that too. I have just finished a 3500 mile drive, and I too considered engine bearing replacement, since reading the aussie site. The noise sounds like the flint ignitor on a gas hob - with a frequency of 2-3 seconds, no patten. It's especially audible when parked next to another car.

Btw, at 60-65mph, the TLC was sipping diesel @ 33mpg, mainly freeway, some towns, high tyre pressures (40psi), Falken All Terrains standard tyre size and luggage for two weeks. Best recorded was 34mpg.
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Frederick (London SW15)


1986 Mercedes 500SEC
1996 TLC 4.2 GS TD
2006 Ford Falcon ute

[500SEC]

Some information I found on the bearing issue from an Oz site, centres mainly on the 12 valve engine and dates back to 1999.
http://www.a1.nl/phomepag/markerink/80bigend.htm
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Frederick (London SW15)


1986 Mercedes 500SEC
1996 TLC 4.2 GS TD
2006 Ford Falcon ute

[Hilux]