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htb2

Member Since: 02 Nov 2018
Location: Carmarthenshire
Posts: 529

bolt in oil whilst changing

Drained oil today and a bolt head came out with the oil. It does not look like the oil pump bolt. Engine is a 15p on 200k. Bolt is an m6 thread with a flanged 8mm head, it is sheared off just below the head. head is marked with letters bup and 10.9 tensile strength.
Will take rocker cover off and have a look for anything missing.
Any pointers to where its from would be gratefully received.

Just as well picked up a spare engine 3wks ago.

27th Apr 2019 9:49am

htb2

Member Since: 02 Nov 2018
Location: Carmarthenshire
Posts: 529

Rocker cover off,nothing missing there.
So sump off next, could be one of the bolts from the oilpump rail assembly,anyone know what size they are.

27th Apr 2019 10:32am

AndyT66

Member Since: 19 Sep 2016
Location: Bedford
Posts: 148

2004 Defender 90 2.5 TD XS CSW Zambezi Silver

Could it be this puppy?
http://www.discovery2.co.uk/Oil_pump_bolt.html

27th Apr 2019 10:57am

htb2

Member Since: 02 Nov 2018
Location: Carmarthenshire
Posts: 529

Nope looks different to that. When took sump off its one of the bolts that holds the oil pump ladder frame to the bottom of the engine block. Part number 12 on the attached parts list, a whole 60p worth of bolt that has sheared.
https://www.scparts.co.uk/sc_en/british-ca...e-td5.html

Looks like engine change time

27th Apr 2019 11:15am

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17378

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

Hmm, interesting and a little surprising that all the ladder frame and sump bolts are Taptites, according to the link above. Clearly none of the holes are threaded prior to assembly.

For those who don't know, a Taptite fastener has a trilobe thread forming shape which rolls (rather than cuts) the corresponding female thread.

27th Apr 2019 11:48am

htb2

Member Since: 02 Nov 2018
Location: Carmarthenshire
Posts: 529

Interesting, wrongly torqued at assembly? lasted past 200K miles though, would you trust the rest?
Probably just change engine and repair at leisure as had a few diesel in oil episodes (from cracked heads) and engine a bit blue smokey after long tickovers

27th Apr 2019 12:05pm

gazman

Member Since: 17 Aug 2015
Location: Liverpool
Posts: 652

I'd get another lower mileage engine and rebuild and run the existing one till either the rebuild was done, then keep it for spares or run it till it died and fit the second motor.
My Volvo is over 210k now and a bit rattly at times but I thought it was going to die after 180k when I foundqq metal in the oil. But it just keeps going and hasn't done anything strange. 2014 - current ..... 2003 defender td5 90 (my car)
2009 - current .... 2005 zx10r

27th Apr 2019 9:13pm

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