my 2 stroke virginity

[mattsprattuk]

ok, so ive bought myself an RXS100, its a 2 stroke project!

ive only ever fanny'd around with 4 strokes...

it hasnt been run in 7 years apparantly, and was running perfect with tax and MOT before it was left in a garage.

now, with a 4 stroke it was just 'dab oil in cylinder, wait, crank over slowly'
is it the same sort of thing for a 2t? i was just wondering because of the fact that there is no oil pump or engine oil i would need to do something about that.

can anyone give any advice?

cheers queers xxx
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

[MarJay]

The very best thing you could do is rebuild the engine with plenty of good quality two stroke oil. Any oil left in the engine would have congealed by now I would have thought.

If you are lazy, then I'd try putting a relatively high concentration of pre mix in there, then I'd gently kick it over a few times (read a lot) without starting it up.

I assume when you say there is no oil pump it runs on pre mix? I'd have thought it would be injection pump. If thats the case then you can do a similar thing, but you need to be more careful, because you can't richen the oil mixture.

Also I would reccomend siphoning or draining any 2t oil that is in the oil injector tank or draining any premix left in the fuel tank. Replace it with something like Castrol TTS or whatever its called these days, something that is a good make and is fully synthetic. Rock oil and Silkolene do good 2t oils too.

If it kicks over with ease (it should) then it isn't seized. But as I said, be careful as you could damage the bore if it has cold seized over time. If it won't kick over (gently) then its probably best to have the head off and replace the piston and rings, and check the bore for marks. If the bore is OK then changing the piston and rings will make the bike (hopefully) work well.

The only reason why this won't work is if you've got something nasty happening in the bottom end, which will mean a full engine rebuild anyway.

Changing the piston and rings on a bike like that is childs play.

{edit} Oh yeah, I'd probably replace the gearbox oil too, before you start! {edit}
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

[stinkwheel]

I'm pretty sure it will have an oil pump. As I recall, the RXS is crankcase induction so the oil pump and carb will be under the right hand side panel.

I'm rather more slap-dash with this kind of thing. First off I'd stick some pre-mixed fuel/oil (maybe 10-20ml or so) down the sparkplug hole, kick it over a few times and leave it to soak.

Next I'd whip the carb off for a strip and clean. If it's been sat for that long, it'll almost certainly be full of baked-on brown crud. I've found the best way to remove this is to soak the parts in acetone (nail varnish remover) for five minutes then drop them into boiling water for about 20 seconds. The crud should now wipe off using more acetone on a rag/cotton bud. ACETONE DISSOLVES RUBBER AND PLASTIC!

I'd ditch anything in the petrol tank, swill it out with fresh fuel and clean out the fuel filter. May be worth fitting a small inline fuel filter too.

Check the air filter hasn't disintegrated and there are no mouse nests in the airbox.

Drain the 2-stroke tank and refill with fresh stuff.

Put the carb back on and bung some 2-stroke premix in (I usually use 50:1). Assuming the oil pump is working, this means it'll be overoiling for a bit but there will be very little lurking about anyway. If it isn't working, it'll save your engine.

Make sure it has a spark.

Make sure there is at least some oil in the gearbox.

Now give it a whirl. Don't kick it too hard, just press down on the lever hard enough to spin the engine over. If it won't start after maybe six kicks, it'll be flooded (you should be able to feel this through the kickstart). Switch the fuel and choke off, open the throttle wide and kick it over maybe ten times or so. Woot. Lots of blue smoke, Ring, ding, ding, ding. etc.

Bet it starts third kick though. If you've done all the above and it hasn't started, have a look at the plug because it should be well and truly soaked and oiled by then. Clean it and try again.

Now stop and give it a proper service. Replace gearbox oil, new plug etc.. Check the oil pump is working by disconnecting it from the carb with the engine idling. Put your finger over the bit on the carb to stop it drawing air in and watch for drips of oil coming out of the hose. At idle you should get about 3 per minute.

They are really simple engines. If it has compression and a spark, you should be able to get it running today.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[Itchy]

[stinkwheel]

[MarJay]

[stinkwheel]

If it is pre-mix (which I don't actually think it is) the degree of yak in the carb after seven years will be far in excess of anything you'd get in a 4-stroke.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[stinkwheel]

Oh yeah. if it has points ignition, give the surface of the points a clean up with some emery paper of a fine file. They tend to get coated in a thin layer of something (don't know what) that doesn't conduct electricity very well.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[st3v3]

[Hijack]
I have my bike sat in back yard. I took carb and air filter off for abut 3 days and it rained but I forgot to put them back on.

I have put 2 stroke down the spark plug hole and kicked it over a couple of times without starting as I was worried about the barrel being 'rusty' from water that may have slipped through the reed valve things.

Have I done right, will it run fine and how can I check if water has penetrated the bottom end?

Thanks.
[/hijack]
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Roger wrote: Women don't get damp for clingy puppies. Get some better happy pills, hit the gym & buy a medallion the size of a dinner plate. Job done

[mattsprattuk]

it isnt a pre-mix, its got a 2t reservoir, but ill use your premix tip, thats a good thing to do.

by oil pump i mean like a 4 stroke oil pump, 4t has a sump with oil in it that gets pumped to all the parts of the engine, a 2 stroke uses the oil in the fuel to lubricate it right? i was just wondering if its been sat for so long, is there any way to lubricate these parts? or should it be just fine?

cheers for the replies, genuinely helpful! keep em coming

cheers queers xxx
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

[st3v3]

Er... Maybe just drain the gearbox oil and put some new in? Don't have a clue if that helps .
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Roger wrote: Women don't get damp for clingy puppies. Get some better happy pills, hit the gym & buy a medallion the size of a dinner plate. Job done

[mattsprattuk]

so gearbox oil.... is that just 2t oil? or is it bought as gearbox oil? ive just never seen any.
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

[stinkwheel]

[stinkwheel]

[.Chris.]

One thing to make sure of is that when you flush out the old 2t oil, you will need to bleed the oil pump as otherwise it won't work properly - there will be air bubbles in the pipes. There is a screw on the oil pump which you remove, then (with the ignition off) gently kick the engine over until you don't get any more bubbles coming out. Then put the screw back in.

The oil pump is located near your right foot on the engine - under the circular cover retained by 3 screws. To check the pump adjustment you need to look for the little black disc that the control cable is wrapped around. It should have a small dot on it which when the slack in the cable is taken up should line up with the little metal rod.

The gearbox oil is the same as any 4 stroke bike's gearbox oil - should be 10W/30 according to my haynes. I just use 15W/40 car engine oil and it seems to be OK.

RXS100s have CDI ignition so no worries about points.
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Chris
1985 Kawasaki Z550F

[mattsprattuk]

stinkwheel...

youdaman

and cheers for that chris! i was about to put some 2t in it!
so normal 4 stroke engine oil works for gearboxes?
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

[st3v3]

Any Gearbox oil will work in the gearbox, I got cheap stuff from Motosave and slapped it in.
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Roger wrote: Women don't get damp for clingy puppies. Get some better happy pills, hit the gym & buy a medallion the size of a dinner plate. Job done

[Kickstart]

[stinkwheel]

[stinkwheel]

[TeddyCanuck]

[mattsprattuk]

well i got the beast today, and my oh my is it a bit of a shitter!
the exhaust isnt blowing, but its very very rusted, maybe a new one is in order...
the battery i ripped out because its bound to be dead, bit of 2 stroke down the spark, kick over, check spark, there was a spark, put spark in, kick over some more, clean spark, re-try etc... so theres compression and a spark, just some sorting at the carb end needed.

do these bikes need a battery to run?

cheers queers xxx
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

[Blau Zedong]

They'll run fine without a battery but you will shag the charging system doing it for long unless you unplug the rectifier or charging coils.
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18:54:48 Rob Fzs: jews don't give away stuff for free

18:54:59 Rob Fzs: unless its their clothes/ hair/ golden teeth

[NSR Mick]

Belive it or not the exhaust from an MBX 80 (I think might have been a kwak of some description.) will bolt straight onto a YB100. And I'm assuming the rxs angles are the same.

No idea where you would get a micron system for an mbx these days but it worked for me 15 years ago.
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If you dont like the way that I ride.......Stop trying to keep up!!!

[Kickstart]

Hi

YB100 had a horizontal cylinder. MBX80 and the RXS100 have (close to) vertical cylinders. How did they fit?

All the best

Keith
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