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GQ/mav 4.2 engine longevity

Tech Talk for Nissan owners.

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Posts: 308
Joined: Wed Feb 11, 2004 4:51 pm
Location: Adelaide, South Australia

GQ/mav 4.2 engine longevity

Post by slowLux »

Hey!

I was wondering if anyone could give me a ballpark figure on how many k's to expect from the 4.2 diesel and the 4.2 running dual fuel?

cheers
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Post by fnqcairns »

I will go out on a limb on both but with conditions - treated nice, warmed up before torquing, few short shopping trips, never overheated and with high spec oil and no late changes and for the diesel only not over fueled and NA.

I guess around 300k for the duel fuel head and around 5 or 600k for the duel fuel bottom.

For the diesel bottom end up to 1M, injectors 200K, Pump 350K, head too hard could go 700K?

Dunno for sure about any of it :roll: .

cheers fnq
*JUST LUV IT* 96 GQ LWB TD4.2, Cav, Kings, Dobinsons, Motorguard, Enginesaver, 400 pro, Cooper ST's (rolls eyes), fleetguard oil filters, Delo 400 engine oil, Delo ESI gearbox oil and an RTC.
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Location: Melbourne

Post by Woop »

I rebuilt my TD42 at 550,000K's and it would easily have gone much much further. Bore wear was minimal and big end and con rod bearings were juuust starting to show signs of wear. Expensive to rebuild though

Nick
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Post by bogged »

Woop wrote:I rebuilt my TD42 at 550,000K's and it would easily have gone much much further. Bore wear was minimal
minimal - you could see the cross hatching in the bores still!
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Location: Langwarrin, Melbourne

Post by Stoknisan »

I have just done the head on my tb42 duel fuel and can still see the cross hatching in the pots at 300K
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Joined: Wed Jan 12, 2005 11:38 pm
Location: Langwarrin, Melbourne

Post by Stoknisan »

I have just done the head on my tb42 duel fuel and can still see the cross hatching in the pots at 300K
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