piston meltdown HELP!!
Discussion
iv got a k series rover 75 i was driving along when it cut out, i looked to find that the water had mixed with the oil, there wasnt a drop of oil left. so thought it has cut out due to lack of oil to the tappets, iv taken the head of and had it skimmed 8 thow was taken off, but just befor i refitted the head i found no 4 piston has melted?
no 1: has anyone seen this befor?
2: were can i get a piston from,
3: any idea wot may have caused this?
no 1: has anyone seen this befor?
2: were can i get a piston from,
3: any idea wot may have caused this?
rsnoble said:
iv got a k series rover 75 i was driving along when it cut out, i looked to find that the water had mixed with the oil, there wasnt a drop of oil left. so thought it has cut out due to lack of oil to the tappets, iv taken the head of and had it skimmed 8 thow was taken off, but just befor i refitted the head i found no 4 piston has melted?
no 1: has anyone seen this befor?
2: were can i get a piston from,
3: any idea wot may have caused this?
Please define 'cut out' ~ did it seize?no 1: has anyone seen this befor?
2: were can i get a piston from,
3: any idea wot may have caused this?
From what you say it appears the car was driven without coolant and oil for a period and became overheated causing damage to the engine. Severe over heating can damage the engine components on any car.
I recently recovered a work colleagues K-Series engined Rover from Bristol. Apparently, driving along the M5 he noticed steam emerging from around the bonnet. Then the needle on the temperature gauge rose towards the red area but then the steam stopped and the needle returned to normal. So, he drove on to the next Motorway exit and soon after leaving the Motorway, his car came to a stop ~ seized engine.
WRONG MOVE! Pistons three and four damaged.
The reason the steam stopped was due to no more coolant in the engine. With no coolant in the engine the coolant tempoerature had no coolant to sense so was unable to provide a relaible reading. He openly admitted he just drives the car and never lifts the bionnet as he has no idea what to look for or check.
He is one of many thousands of car users like that. There ought to be a law against such ignorance ... for their own sakes... which can be costly in so many ways.
Too expensive to repair his damaged engine, I was able to help him source a good used replacement and the job was done for relatively little money and his car lives again.
Fortunately, good used K-Series engines are not difficult to obtain and relatively cheap to come by. My son recently replaced the 1.8 K-Series in his Rover Metro with 1.8 VVC version. He has given the 1.8 to another of his Rover mad mates... who swap engines in their cars for the fun of it.
What's the point of a VVC Rover Metro do I hear someone ask ~ Drive one and see...
If your car is your sole means of getting about and you want to keep and repair the R75, get a cheap runabout in the meantime whilst sourcing a replacement engine. If you are not happy about any used engine offered, best to get a replacement with a decent guarantee.
ETA @ 23:13 ~ What a shame BMW and later MG-Rover were not, for whatever reason, able to put Rover's excellent T16 two litre engine in the large R75 and MGZT. In both normally aspirated and turbocharged form (200ps), that would have been ideal for the Rover 75 and ZT from just about every aspect.
Another missed opportunity.
Edited by MGJohn on Monday 9th March 23:13
rsnoble said:
.....i looked to find that the water had mixed with the oil, there wasnt a drop of oil left.....
rsnoble said:
the engine turns over fine and even trys to star but with the piston like it wasnt doing much good, id rater try and repair engine. iv been told its a prob with the k seiries engine!!
Be assured ~ it's a problem with ANY engine that has lost its oil or coolant.Good luck with the repair. Fortunately, the K-Series is one of the easiest 16 valve engines to check and work on.
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