nsr 125 fucked

[Finney2003uk]

ayup lads just wondering if u could help me earlyer today may nsr 125 just stopped just fucked up over heated and started smoking just wondering how much on advreage does it cost to sort it out

also whats wrong with it

[Frost]

did it seize? as in engine lock solid? or did it just overheat?

[alains]

i think you've got a hole in the piston , i do not know price repair in the UK and i hope the barrel have no damage .
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the worst day fishing is better than the best day working

[alains]

here in france barrel=£100 , piston+rings £80 , seals £20 , plus 3 hours labour at about £25 each , total £300 approx. and i presume it's about the same in UK
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the worst day fishing is better than the best day working

[Kickstart]

Hi

Doubt it has holed the piston. Overheating followed by "smoking" would suggest to me that the head gasket has failed. Check the level of the coolant in the engine / radiator.

However if this is the case then the parts needed are likely to be the same as for a holed piston, just that you might need to replace the head (or get it skimmed flat again) as well.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[Finney2003uk]

there was no water in the radator well about 1/8 th of a pint

[alains]

take off the thermostat , fill the circuit with distilled water and drive for a while . then check water level , if no overheating then change thermostat (obviously if your engine is not down)
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the worst day fishing is better than the best day working

[Finney2003uk]

cant start me bike at all its fucked

[alains]

so , now you've some work to do . take off barrel , inspect precautionly & eventually change it with the piston . it will take 4-5 hours work .
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the worst day fishing is better than the best day working

[Finney2003uk]

so take off the barrel check 4 damage in side and check the piston

[Finney2003uk]

what about just puting a 180 piston and barrel on would that work and also i would have to sort out the timing would it fit

[Kickstart]

Hi

You could stick one of the Malossi kits on. Think they pretty much bolt straight on but might well need the jetting playing with. Cost more than a standard barrel from David Silver Spares.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[Finney2003uk]

how much more tho lol cnd where could i find 1

[alains]

i wont recommand to put a big bore , better to put new barrel+piston kit
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the worst day fishing is better than the best day working

[Finney2003uk]

y wouldent u recomend it

[mr jamez]

Because it will go bang doubt the money spent is worth the tiny increase in power anyway

Just go with a normal top end

Barrel and piston
Piston rings
small end bearing
Head and exhaust studs
head gasket
base gasket
2 circlips
RC valve seal

Think that is everything you need