RG 150 sus oil leak?

[FruitLooPs]

Hey guys, I've just gotten myself a RG150 last week.

Seems great so far, etc etc. I was wanting to check the powervalves since the thing has tad over 40k on the clock, still pulls hard from late 8,000rpm or so (although its my first bike so im not sure how hard it should do?).

It had some engine work about 5,000kms ago, but specifics im not sure of. Starts first go etc etc, im not too worried about it, i'll take a look at the piston etc sometime. Mainly wanted to check my valves werent about to visit mr. cylinder


So I removed the side fairing and decided against going much further since i needed to remove and probably flush the radiator, and time was ticking on (will do this at a later date though). Although something that concerned me is the large quantities of oil that was down the front of the engine.

I know absolutely nothing about 2-strokes really, aside from what little i've gathered in the last week or so. I'm hoping its a leaking gasket from the exhast manifold or something, although it is *quite* a lot of oil, and has made a fist sized blotch through the radiator easily visible on both sides. Maybe its just accumulated over the years, im not sure.


Anyhow I got some pics (night + cam phone +flash, soz), and wanted to know what folks opinions were for it, cyl gasket or anything serious or just wear and tear?

http://fruit.orcon.net.nz/rg150/Image008.jpg

http://fruit.orcon.net.nz/rg150/Image007.jpg

And one of the bike in question: http://fruit.orcon.net.nz/Image014.jpg And yes, a previous owner has gone to town painting the thing it seems, I wasn't even aware the wheels didnt come white factory (or do they?) until I saw another RG on here! I was initially suspicious of the painted frame, but all seems kosha - not bent or repaired so far as I can tell, stable at speed etc.

I'm happy with my purchase except for the possible associated bill with owning a 2-stroke with these Kms.

All the same, its been much fun so far, and lots more to come hopefully. I'm prepared to pick up a spanner for this thing, thats for sure.

[Ixion]

Wouldn't worry about it. Two smokers all blow oil out the zorst, looks like its an accumulation over years as you say. Leaking exhaust gasket. There's nowhere else there the oil can come from (ie it's not gearbox). And on a two stroke, there's no oil pressure as such. So an engine oil leak doesn't mean too much. Clean it up, run it and see if it reappears, and if it does where it's coming from. Petal does the same thing on the right hand cylinder, I am just too lazy to replace the gasket.

[Motu]

Pus oozing out - fairly normal if you don't clean your bike,an idea of how the previous owner looked after the bike,but nothing to be concerned about.

[ZorsT]

Mine had that when i got them (both of them)

After two cans of $2 degreaser from supercheap, it was cleaned up.

To stop it happening, i used LOTS of maniseal around the gasket. Its been clean ever since.

[team cudby]

Hey guys, I've just gotten myself a RG150 last week.

Seems great so far, etc etc. I was wanting to check the powervalves since the thing has tad over 40k on the clock, still pulls hard from late 8,000rpm or so (although its my first bike so im not sure how hard it should do?).

It had some engine work about 5,000kms ago, but specifics im not sure of. Starts first go etc etc, im not too worried about it, i'll take a look at the piston etc sometime. Mainly wanted to check my valves werent about to visit mr. cylinder


So I removed the side fairing and decided against going much further since i needed to remove and probably flush the radiator, and time was ticking on (will do this at a later date though). Although something that concerned me is the large quantities of oil that was down the front of the engine.

I know absolutely nothing about 2-strokes really, aside from what little i've gathered in the last week or so. I'm hoping its a leaking gasket from the exhast manifold or something, although it is *quite* a lot of oil, and has made a fist sized blotch through the radiator easily visible on both sides. Maybe its just accumulated over the years, im not sure.


Anyhow I got some pics (night + cam phone +flash, soz), and wanted to know what folks opinions were for it, cyl gasket or anything serious or just wear and tear?

http://fruit.orcon.net.nz/rg150/Image008.jpg

http://fruit.orcon.net.nz/rg150/Image007.jpg

And one of the bike in question: http://fruit.orcon.net.nz/Image014.jpg And yes, a previous owner has gone to town painting the thing it seems, I wasn't even aware the wheels didnt come white factory (or do they?) until I saw another RG on here! I was initially suspicious of the painted frame, but all seems kosha - not bent or repaired so far as I can tell, stable at speed etc.

I'm happy with my purchase except for the possible associated bill with owning a 2-stroke with these Kms.

All the same, its been much fun so far, and lots more to come hopefully. I'm prepared to pick up a spanner for this thing, thats for sure.

check your overflow pipe from your powervalve cover to filter.Seems to be a common problem with these bikes.makes a hell of a mess if not checked

[FruitLooPs]

Yeah the lil breather pipe on the cover of the powervalve cover wasn't attached. It would seem that is the least of my worries now though ...


I opened the thing up and was presented with:

2x loose springs, one a fair bit shorter than the other..
1x top of the powervalve (where it gets held in place by the small top bar)
and the two halves of the surrounding bit that goes around the top of it.

Shite Not going to be cheap I take it, guess that explains the lack of low end power, im just real glad I didnt drop it into the cylinder since it was broken pretty severely.

I'll upload some pics in a second, We pulled the thing to bits but the valve is stuck in It comes 90% of the way out and wont budge, im not about to rip it out either incase it scratches the inside of the powervalve cylinder. Other one came out cake and seems nearly fine except it has a chip about 1-2mm on the bottom most blade at the very tip (contacted the piston?), is that replacement material or would it still function 90% of a normal one?

[ZorsT]

Was it the actual Valve itself or the clip that holds the springs in?

The clip and springs cost a mere $12 from memory

The valves are far far more...

[FruitLooPs]

And Pictures of the offending parts



In the second pic the part leftmost is half the surround that goes around the top of the powervalve, the middle part is the top itself, and the right is the other half of it.


So how should I best go about getting the valve out since its stuck? Also how much roughly are new valves today, those posts in 2004 quote $300 hope its better these days, even a little. What about second hand, yes/no? and does anyone make stronger ones?


Cheers, sorry for the long posts. Heh, trust my luck - not too fussed though, more glad that i didnt seize it while riding or anything.

[ZorsT]

Hard to tell from the pictures.

Got any less blurry ones?

[SlowHand]

valves are 300 each, 2 parts to em apparently. if a certain side breaks, you only gota replace one, but if its the other side, you have to replace both - or so im told. bad luck

[Mr. Peanut]

valves are 300 each, 2 parts to em apparently. if a certain side breaks, you only gota replace one, but if its the other side, you have to replace both - or so im told. bad luck

$300? Thats not so bad, try owning an RGV250 with 40,000km

[imdying]

Try macro mode on your camera, it's the 'tulip shaped symbol' setting if it has it. Will focus down to about 30cm then, pretty hard to tell from what you've supplied thus far

[FruitLooPs]

Cell cam + no macro mode + terrible lighting = those pics. Sorry guys, should've taken them bigger.

But yeah, its not a matter of whether one is rooted, because it is - badly. But rather whether the chipped second one (which i tried to get a pic of but didnt in the end) is ok, and how much they cost etc.

Also techniques for getting the stuck valve out without scratching the cylinder would be appreciated too, since it wont come out the last lil wee bit.

If the blades themselves are OK, but the stem bit that holds them in isn't, can they be replaced seperately? or is it still one assembly, didnt really get a chance to examine them fully huh. Its at a friends place you see.

Might fork out for at least one valve tomorrow, depending on price etc - second hand valves may well have metal fatigue aswell yes?

The top of the part the valve that connects to the topmost bar:

[imdying]

I seem to remember there was big thread about RG150s not too long ago, and one of the things dicussed in some depth was how to get the valves out.

[SlowHand]

Also techniques for getting the stuck valve out without scratching the cylinder would be appreciated too, since it wont come out the last lil wee bit.

herein lies the reason i shouldnt touch engines. i woulda yanked the fucker out.

2nd hand p valves - bad cheese