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3i_gaz

posted on 31st Jan 12 at 22:56

Nope not on a CBT


Tom G

posted on 31st Jan 12 at 12:26

Serious question, if im 21 and pass my cbt, would i be able to ride 33bhp bikes?


reecegsi

posted on 31st Jan 12 at 12:00

When i done piston on my mx i changed nuts gaskets and plug also piston and rings and it was fine with the bore kit and race exhaust and big carb thing fecking was rapid lol


sand-eel

posted on 31st Jan 12 at 01:23

I would tell him to bin his oil pump and pre-mix the petrol as they seem to always fuck up.


3i_gaz

posted on 31st Jan 12 at 01:13

It just fouls the plug too much oil the right mixture and decent quality and you wont need any extra :)

Need to do plug checks every couple of thousand to see how its running imo always jelps


richc

posted on 30th Jan 12 at 09:48

quote:
Originally posted by 3i_gaz
Its bad oil that kills 2 strokes and too many revs when cold.


I use to put a cap of 2 stroke in my petrol aswell. And let it tick over whilst putting my gear on. 17k miles in a year and abit on a 50 with a 70 bore kit :facepalm:

Never had a problem though an it got death everywhere.


3i_gaz

posted on 30th Jan 12 at 09:28

Its bad oil that kills 2 strokes and too many revs when cold.


Phillips_91

posted on 30th Jan 12 at 09:26

quote:
Originally posted by corsadonk
quote:
Originally posted by Phillips_91
Piston rings if its a 125, mine went so many times it was untrue!


Should of let it warm up before riding it. Mito's are better anyway.


It was alwasys warmed before riding, neighbours hated me, i'd be out half an hour before goin out in the morning firing it up and it had an arrow race can on it! :lol:


FlaFFy_91

posted on 30th Jan 12 at 01:59

not a hard thing to do though is it mate. If we get stuck ill bring it down to yours to get it sorted maynn


3i_gaz

posted on 30th Jan 12 at 00:56

i'll build it for him


FlaFFy_91

posted on 30th Jan 12 at 00:47

i say it popped, basicly the gearbox was fucked, wouldnt rev above 5k and then if it did it sounded like a f1 car then it started seizing up and he still kept riding it into the ground and i think to be honest hes just worn the feck out of the bore and the rings as theres no compression and no way of it starting any more
yer gaz ill send him down
ive heard little end bareings are the main thing to do if your changeing it as they go quite easily


3i_gaz

posted on 30th Jan 12 at 00:21

if you use decent fully synth 2 stroke they dont do rings half as often. i done 10k on my tuono 125 and it was absolutely mint!

Just go to grampians in waterloo and grab a top end set and some rings. Easiest things to build ever mate.


brynalar

posted on 29th Jan 12 at 21:54

What happened when the engine 'popped' ? cos if it was main bearings/ crank then head/ top end may be damaged too...


colonel_g

posted on 29th Jan 12 at 21:47

if you doing the rings might aswell whack a new piston in it too.


Sunz

posted on 28th Jan 12 at 17:48

Ah 2 strokes, they are the future, so simple !

Only did gaskets on the ones I replaced but you might as well do rings as it's simple simple stuff.
Never even bothered to get the correct torque settings for the bolts, just as long as they were tight it was good.


corsadonk

posted on 28th Jan 12 at 17:48

quote:
Originally posted by Phillips_91
Piston rings if its a 125, mine went so many times it was untrue!


Should of let it warm up before riding it. Mito's are better anyway.


Phillips_91

posted on 28th Jan 12 at 17:32

Piston rings if its a 125, mine went so many times it was untrue!


Graeme

posted on 28th Jan 12 at 16:19

Just gaskets normally.


FlaFFy_91

posted on 28th Jan 12 at 14:29

there you go then thats probly why then. Dont know shit about bikes tbh haha. Do you know if he has to replace anything (other than gaskets)?


Ojc

posted on 28th Jan 12 at 14:04

I'm sure the reason he wants to keep the head is because the earlier bikes had slightly more power and if his his an earlier bike then there you go.


FlaFFy_91

posted on 28th Jan 12 at 13:43

Bit of tech info basicly

Friend of mine popped his rs125 engine so bought a new one

He wants to keep the head and top end off his old engine for some reason

Basicly what i wanted to know is do they work off things like stretch bolts that need replacing each time you remove them on the head?

Or if hes swopping the head does he need to replace anything other than the gaskets obviously