severe knocking noise and loss of power

[1undadawg]

I recently bought an nc30 (import) with a slight knocking noise at about 3000 rpm and was told by the previous owner not to ride it until i had it looked at. easier said than done the six year old boy came out in me and i took her for a spin after about 40 mins the slight knock turned into a horrible clattering noise like there are nuts and bolts rattling around inside, there was a total loss in power and it was cutting out at the end of every street . i havent got much experience with big bikes mainly 2 strokes so i havent got the foggiest what has happened but i know its pretty bad whatever it is. does this engine sound like a total loss or is there a chance it could be revived pls help somebody please

[viper_biker]

Possibly the big ends are gone or a dropped valve, time for a new motor I think.

[Sligeach]

in any case it sounds fooked, no point sugar coating it.
its hard to think what in the name of jaysus was going through your head thinking it would be fine

[1undadawg]

this is what i feared ahh well better start saving pennies again

[viper_biker]

You should get a good motor for about £200. Get one from a breakers and ask for a warranty so if it's a dud you'll get your money back.

[1undadawg]

cheers lads your help is much appreciated im on the hunt as we speak

[MexicanGringo]

why not open it up and inspect the damage, tho if a new engine is 200quid then itd be cheaper to replace!

[wullvfr]

yeah,get yourself a replacement engine and once fitted inspect the buggered one and see if you can solve the problem and get it sold or keep as a spare.....thats what id do anyway



william

[NC35!]

It's almost certainly a big end bearing has failed.

If you are in living in the Southeast of England, I have a good replacement with approximately 15,000 miles on I can let you have for £175 delivered to your door.

Thanks

[zimm]

It's almost certainly a big end bearing has failed.

If you are in living in the Southeast of England, I have a good replacement with approximately 15,000 miles on I can let you have for £175 delivered to your door.

Thanks

thats tempting even though i havent got anything to put it in :)

nc30 go-kart ?