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Discussion Starter #1
Hi guys,

Been working on the bike, cleaned out the carbies, cleaned the float valves, you name it, they're spotless.

Go to re-install them, one of the insulator nuts came loose and dropped, I thought it landed somewhere in the motor NOT INSIDE THE DAMN MOTOR.

So I went to crank it... guess what? It did fall inside the motor.. now the damn thing has seized up :-/

1. What are my options? strip down the motor and hope I can just take it out?
2. Buy a 2nd hand motor?
3. Maybe someone from this forum can help me take it apart and put it back together?

It was suppose to be a project bike, now it's turned into a big stuff up!

Cheers,
Johnny
 
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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

Why the hell would you even crank the engine knowing that your dropped the nut in the first place?

For the sake of $1.50 magnet on a stick from super cheap you could have retrieved the nut.

I understand that either you wanted to give cleaning carbs a go yourself or saving money, but you just cost yourself anywhere from $600-$1,000 to fix this situation.

FYI it would have cost you around $250 for a proper carby clean, new 0-rings and balance from a shop.


1. What are my options? strip down the motor and hope I can just take it out?
2. Buy a 2nd hand motor?
3. Maybe someone from this forum can help me take it apart and put it back together?
1. You would have to be the luckiest person alive if you could just remove the offending nut. More than likely it has jammed between the valave an the valve seat destroying head and piston.

2. Might be an option, can't comment on that yet.

3. I can help you fix the problem, but it depends on your location as I have my own motorcycle workshop in Wollongong. (I do have a bike trailer and I can pick up)
 

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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

Thats an epic facepalm :D Dont worry, bad stuff happens occasionally on DIY bike jobs. You're not the first, but its still pretty rare all the same. Studricho is the person to see if you bike is feeling crook - he's actually part CBR250R ;D
 

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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

lol hope u have lube
 

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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

I cant help but im subscribing to this thread!!
 

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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

Wow, you must feel really stupid for not trying to find the nut before cranking the engine over. Sympathies to you. I know the feeling (though not quite as bad).

I'd be chatting to Stud about what he'd want to charge you for the strip down. Like he said chances are you've stuffed some quite expensive parts so it might be better to just go with the replace rather than stripping it down and finding out the repairs outweigh the cost of a new motor.
 

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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

i don't know much about engines but what did u think was going to happen
 

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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

the guys made a mistake and thought it landed on the outside of the motor.....im sure many of us have done the same......we just werent unlucky that it fell into it.........

friends friend had a workshop drop a bolt into engine and ended up having to pay for parts for a rebuild.....labour was free though.........
 

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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

Two50RR said:
the guys made a mistake and thought it landed on the outside of the motor.....im sure many of us have done the same......we just werent unlucky that it fell into it.........

friends friend had a workshop drop a bolt into engine and ended up having to pay for parts for a rebuild.....labour was free though.........
No question it was unlucky, but as a rule of thumb if you have an engine apart (or even an exposed opening) and you drop something then you don't do a thing until you find whatever you dropped. :blush:

That's pretty shitty about your friend having to pay parts, should have been all covered by the workshop - but I suppose at least labour was free. And who knows what went on that lead to him paying parts.
 

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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

Yeah I didn't think it would have fallen into the motor.. I used a magnetic wand and didn't pick up anything.. so I went and put everything back together.
Cranked a few times, then I went to spray some start ya bastard on then tried again, 3rd time... It seized.

I put the bike into 6th gear and moved it back and forth, it's not totally jammed. So hopefully nothing is "totaled"..

I'm going to see if I can borrow enough tools to pop off the head and try and remove the stud, if not I'll just have to fork out and pay someone.

Mind you, I am not a total n00b.. I have worked on cars before, this was just REAL bad luck.


I have even a more radical idea, probably won't work, but I am going to drain the bike of its fluids and get a few mates to put it upside down and see if it "just slides out".. worth a try right?
 
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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

Here some ideas.

-Remove the coils so you can have a really good look straight down the plug hole. Remove plugs and inspect each piston for damage. I find my little mag light works best for this.

-Have a look under your starter motor. Everything falls under there. It's like the back seat of cars.

-I just thought of something. What if a chunk of manifold rubber has fallen in instead and that has jammed under the valve seat causing the valve to stay open and touch the piston. I've actually had this happen when I removed the offending carbies a small piece fell in.
 

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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

Pics of the bike upside down or ban.
 

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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

dayeve said:
Pics of the bike upside down or ban.
Bahaha

+1
 

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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

yeh washer edition lol

(PS tipped my engine upside down when it was out rofl no go)
 
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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

Blackness said:
yeh washer edition lol

(PS tipped my engine upside down when it was out rofl no go)
I think your washer was mushed into the piston and or head from memory.

Once I heard the noise I knew what it was.
 
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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

Your not the first person who has done something like this. Not by a long shot. I've seen it before, in fact my GT was put into storage prematurely by it's original owner who dropped a bolt into the intake then started it. It actually started then a piston shattered a couple of seconds later. He lost all his MOJO and parked the bike under the house for 30 yrs to be rediscovered and restored by me.

Dont be put off by the fucktards in here bagging you out, it's very easy to do just what you did. Good on you guys, for giving him the worst case scenario and offering to take his money. Thats a great way to help.

You wanted a project bike? Well now you have one! Dont be scared of it. While tipping your engine/bike upside down may seem crazy to you, i''ve seen some pretty crazy shit turned upside down and shaken to recover tools or parts. It may get your part back, but it wont fix your problem. Dont do it. Because you may have more things to fix, so you will have to open it up anyways.

First thing you need to do is establish if it is actually a foreign object in a cylinder causing your problem. You would feel pretty stupid pulling the head off only to find your trying to turn the bike over in gear or something know what i mean? Remove all your plugs to relieve compression, remove your carbies again for access, and even remove your exhaust headers for access if your sure there is something in the engine. You'll want to take the radiator off as well i reckon. Take off as much as you need to then turn the engine over carefully with a socket on the crank to feel for the binding and listen carefully to determine if it is actually what you think it is.

Once your sure thats what it is, off with the head. Firstly to get your part back and secondly to inspect it for damage. Follow the workshop manual, take your time, and buy tools if/as you need them. You may find a bit of damage that may need repair, you may find some that wont. You need to lift the head to be sure. At any rate, the damage will only be restricted to one cylinder. You may need to replace a valve, you may even need to replace a piston. All of this is replaceable yourself, without paying someone thousands of dollars. You will be surprised how much it WONT cost if you do it yourself.

This is the sort of thing i found, mind you this sort of problem with a two stroke cause a bit more damage.



I think your problem will quite probably be restricted to a valve and a seat. With negligible damage to a piston.

Im keen to see what you find, post up pictures and start a project thread, some of us will be happy to guide you through it if you need it. Others are just going to laugh at you. But you will have the last laugh when you have fixed it yourself and know your bike from the inside out!
 

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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

I hope it isn't a insulator square nut... :/

I'm going to tip the bike upside down.. and YES I will take photos and upload :dodgy: and blast the intake with an air gun see if anything comes out.

Hope it's a piece of rubber as studricho said..
 

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RE: HELP = I cranked the motor and dropped an insulator nut down the intake side - HELP

The worst thing is that from the sounds of it, Johnny WILL probably end up turning his bike over, WILL take pictures, WILL post them and then be laughed off the forum.

To quote another member, 'how hard is it to not be a spastic?'
 
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