My bike blew up!!!

[b1g-fuLLa]

Grrrrr had my Suzuki Rg150 for 2 weeks. Everything i read about them said that they hit a rev limiter as soon as the bike hit 13,000RPM to stop it blowing up. So i took it out, and took it hard. I redlined in 5th gear at "x" speed (ok ok i was being a bit of an idiot on the back roads) and changed up into 6th. Slowly the bike speed started to lift, then the motor cut out and started whining!!!!! I had a look at it........ the coolent pipe melted through so no water was getting to the radiator. The engine overheated, then seized! FUK!!!

This aint gonna be cheap to fix..............

I think ill buy a zxr250, at least i can trust them!!!

[Angusdog]

Would a rev limiter have helped you here? The coolant pipe is the source of your problems, not over revving which would have broken something within the motor (rod, piston or both). It's going to be cheaper to fix than a similar meltdown in a ZXR250.

[b1g-fuLLa]

Yea, i think my bike is absolutely screwd though, think i need a new engine and radiator, but then i dont know much about these things. But put it this way. I was going 160 then it just cut out, made a whining noise and rolled to a stop. I took the seat off to have a look. coolent everywhere exept in the coolent tank, holed coolent pipe. Kickstart is jammed, which is obviously because the motor is seized and won't turn over. I think thats quite hard and not cheap to fix on little 2 strokes like this, probably need a new motor at least, and Im sure that will be at least $1000................

[Jantar]

No, its a two stroke so much cheeper and easier to fix than a four stroke. These things can happen, but does your bike have a temperature guage?

[caesius]

You might be lucky, sometimes you can let the bike cool down then turn the engine over after a seizure. Sometimes not though.

[Grub]

So i took it out, and took it hard!!!

So you set out to screw the bike .... and it screwed you.

Welcome to Kiwibiker ... we're not very PC here

[Angusdog]

A two stroke only needs three moving parts (although most have more). A four stroke would be toast, from cams, valves, pistons, camchain etc. So it's just as well you didn't blow up a ZXR. If the piston is seized, the bottom end (crank) may be okay, so you are probably up for a piston and new cylinder. And new coolant hose.

Bu these things happen. Two strokes will seize if they don't get enough oil, or cooling, or run too lean for too long, or you took their name in vain. I've killed an RD400 and PE400 in my youth from ignorance of what they required. And an XR600, for my sins.

[Coyote]

Yea, i think my bike is absolutely screwd though, think i need a new engine and radiator, but then i dont know much about these things. But put it this way. I was going 160 then it just cut out, made a whining noise and rolled to a stop. I took the seat off to have a look. coolent everywhere exept in the coolent tank, holed coolent pipe. Kickstart is jammed, which is obviously because the motor is seized and won't turn over. I think thats quite hard and not cheap to fix on little 2 strokes like this, probably need a new motor at least, and Im sure that will be at least $1000................

I got a wrecked bike for $800 and took the engine from that. I originally got it off a mate with the intention of doing it up rather than taking the engine to keep my road bike going. You might not be so lucky finding an old bike, but give it a shot. Might find something at turners

Although hopefully it's just the top end (piston and barrel) that has seized. I've seen several barrels and pistons for sale on trademe in the past and you can get them from dealers (although they're expensive). Think the crank seized on my bike... ah well, flogging both off to a mate to pay for VFR brake disks, they're his problem now

[FruitLooPs]

No, its a two stroke so much cheeper and easier to fix than a four stroke. These things can happen, but does your bike have a temperature guage?

RG150's have a guage that for all intents and purposes is useless. When the bike is really warm it might move half a cm from the bottom peg, i've never seen the factory temp guage read halfway even, think the bike would be dead by then.

All the race bikes down south use a $30 remote sensor temperature guage from DSE. Slimline ones, not sure if you can still get them - go up to 70c.

I'm not that surprised the bike blew up, although a holed pipe is unfortunate. You should be able to trust an RG150, they're wrung out on a regular basis for extended periods without issue by the streetstock guys down here - including me.

When I first got my bike, it needed 2 new powervalves because they had seized and a new piston/rings since it was slightly damaged.

Had the whole thing split and checked by Oyster down here to make sure it didn't have a crankcase leak like I had suspected. I think you can get a rebuild if you know the right folk for under $1k. I did, ended up being more because of the bloody valves though.

and there is *no* point in taking the bike to 13 grand. Redline is 12.5, and both of the RG's i've been on make a slightly offputting metallic whine at about 12 which is when I usually shift by.


My advice, pull the engine, or the head. It's easy as pie - took me and a friend an hour or so to pull the engine if that without a hoist or anything in my garage. Check the powervalve box, see if you can actuate the valves - if they're jammed and munted then thats $700 for a new set right there for new geunine suzuki parts.. might get lucky and find some on TM

I hope you didn't get your mechanic friend to remove the limiter as per your post: http://www.kiwibiker.co.nz/forums/sh...ad.php?t=55813

Sounds to me like you need a faster bike, and probably a racetrack to use it on.

[b1g-fuLLa]

Thanks for the replys guys. The thing is, this is my first road bike. Its also my first two stroke bikes, used to riding 4 stroke dirt bikes. Fact is, i don't realy know what a twostroke is meant to sound like, and the engine on thr RG is soo bloody quiet that when you're going over 120 you cant even hear it, just the wind rush. But you can feel when the bike needs a gear change, rather than hear it.

Caesius, i wasn't lucky this time, bikes cooled down and still seized tight.

Fruitloops, when I told my mate what I had bought he said Id better leave it as it is......... they blow up enough already!!! lol
And yes you're right, temperature gauge was barely up at all, only around 1/4 of the way up. Heres a copy and pasted description from the auction i bought it from.............

Suzuki RG150
New WOF this week, Rego has been on hold, will reactivate this week.
Need to check mileage reading and will adjust if necessary.
Average condition, scratches and cracks in fairings some repairs, Looks o.k. unless close up inspection. Unusual small dents one side of tank, not consistent with accident damage but who knows. This bike has obviously been dropped on both sides.
Just had new piston & rings, bore honed, Power valves checked & cleaned. Clutch plates cleaned & checked, new clutch cable. No receipts, no warranty, old parts available for inspection.
I have ridden this about 3 kms since engine rebuild and that was on a wet and windy day so parked it.
Can be viewed at Albany during business hours by prior arrangement.
No joy rides.
Cheap sale to move it on. No guarantees it just has to go along with heaps of other stuff.

Im not exactly that mechanicly minded when it comes to pulling stuff apart..............

With the work that was supposedly done on it you wouldnt expect it to crap out already would you??????? I honestly don't know how to look after a two stroke bike lol. The RG was meant to be my "cheap learning bike" before i upgraded to my dream...... the zxr250

[LilSel]

dude... that sucks!!! hope you get it sorted without too much hassle

[quallman1234]

Ya muppet.

RG's go for ages if you know what too look out for.

You can probably sell it for a decent prize siezed on trademe.
I saw a sieze one go for like 600-800$

[b1g-fuLLa]

thing is i dont really want to sell it fucked after two weeks. Bought it for 1600, was offered 2500 for it on monday. Of course now the offer has expired lol. Ah bugger i hate myself why oh why did i have to take that thing soo bloody hard

[quallman1234]

thing is i dont really want to sell it fucked after two weeks. Bought it for 1600, was offered 2500 for it on monday. Of course now the offer has expired lol. Ah bugger i hate myself why oh why did i have to take that thing soo bloody hard

Was the radiator always like this? It sounds like you bought a messed up bike.

[b1g-fuLLa]

Na radiator seemed ok to start off with, it just got screwd because of the lack of coolent I think. When i got the bike firs thing I did was take the seat off and have a look. Replaced battery, spark plug. Battery acid overflow pipe is split. Left it alone as it doesn't really matter. Pipe from the coolent tank was snapped at the end near the tank. i just straightened the edge of the pipe up and put it back on the tank. Im pretty guttered about all this ae