I've owned my 03 350z for 4/5 years, its done 80k miles.
As far as history, the only thing to have gone on the motor was the clutch at about 70k.. so its been a good ride till now.
Last week I heard a knocking develop from the engine, so I parked it up instantly, and havn't started the engine since.
The car is still firing correctly, no misfires or uneven idle. No loss of oil or water.
Got the car recovered to a local Nissan dealership in Manchester, who took 3 days to get around to it, and say that "the knocking is defo coming from the engine" .. ?!?!?! erm yeeaaahh .. I knew that. They 'think' its likely to be a crank/bearing issue, and have given me the following options:
1: Short motor replacement - £5500 plus labour of about £750 to remove engine etc..
2: Remove engine and replace the crank and bearings.. £750 for a crankshaft, £150 for various bearings, and prob £1k+ on labour to do so.. warranty only on the parts changed - which we all know if a major fail occurs, it wont cover the valves etc if they get mashed...
Currently, they have not removed or stripped anything down, as soon as they start, Im into a decision that will lead me down their repair routes and costs..
I've rang around a few engineering/refurb companies:
Engine World Ltd in Bolton. Full refurb engine replacement, 12 months full warranty on all parts - fitted for £3-3500k ..
Engine solutions Ltd in Essex - would strip the engine and replace the crank etc for £3k.. rough price as may involve a rod or 2, although the engine hasnt thrown one yet..
Does anyone have any advice or info that I may find useful..??
Im finding myself in very unfamiliar territory
Cheers!