Couple removal from crank ?

[Boris]

Yes, I did a search.
All I found was a thread on how to remove the other end of the coupler.

Anyway, I picked up a Raider with a 62T last night.
Pulled the head off and the thing looks perfect other than the fact that it sat for a few years and got rain water into the motor (turns over by hand but it ain't smooth).

I need to pull it apart and want to get the coupler off.
Is the thread left or right ??
Pressed on ???

 

[sflsurfrider]

its a standard thread. if the motor isnt too corroded, you can usually hit one of the fingers on the coupler with a rubber mallet. OR stuff a section of rope into the rear cylinder to lock the engine and then you can fit the metal end of a hammer into the coupler and turn counterclockwise. make sure not to get the rope caught in any ports.

heat will work if your not concerned with your crank seals.

 

[Boris]

Got ya.:arms:

I have the rope on top of the piston already but wanted to make sure.

Thank you for a quick reply, now it's time to strip my new motor down.

P.S. I paid $100 for the Raider with a 62T(carbs look like new), was it a good deal ??:biggrin:

 

[sflsurfrider]

bastard!!!!!

 

[2lick]

could you explain the rope thing to me??

 

[Boris]

bastard!!!!!

Flattery will get you everywhere.:Banane01:


The rope thing is the best way to stop your crank from turning over.
You pull the head off and coil rope on top of the piston.
Stick the head back on and there you have it.

The rope won't damage anything and it will prevent the piston from passing TDC (top dead center)

 

[T-bone]

Got ya.:arms:

I have the rope on top of the piston already but wanted to make sure.

Thank you for a quick reply, now it's time to strip my new motor down.

P.S. I paid $100 for the Raider with a 62T(carbs look like new), was it a good deal ??:biggrin:

you better just send me the motor and ill give you back your money.....out of the goodness of my heart i just dont want to see you have to go though all that misery.

 

[Boris]

you better just send me the motor and ill give you back your money.....out of the goodness of my heart i just dont want to see you have to go though all that misery.

I would but I'm afraid that I killed some of the tadpoles that were living in the hull.
I know they are irreplaceable so I'm stuck with this paper weight now.
Sorry.

 

[2lick]

I c thanks for explaining it~!

 

[ski4]

Flattery will get you everywhere.:Banane01:


The rope thing is the best way to stop your crank from turning over.
You pull the head off and coil rope on top of the piston.
Stick the head back on and there you have it.

The rope won't damage anything and it will prevent the piston from passing TDC (top dead center)

you don't even need to pull the head, just shove the rope inthe spark plug hole

 

[sflsurfrider]

since he disassembling the engine anyway, its easier to pull the head, shove a coiled rope in there and put the six rear head bolts in. no chance of getting caught in any ports that way.

either way is fine.

 

[Mouthfulloflake]

Dang Boris..

NICE FIND!

:biggthumpup:

 

[CG Racing]

Buy the coupler tool, and use an impact. No Rope required and no broken coupler fingers from just trying to shove a hammer or pipe in it. Plus, it's much easier

 

[sflsurfrider]

i guess itd be pretty easy to make a coupler tool out of an aluminum pipe welded to an old coupler.

 

[CG Racing]

take an old coupler and dampner and PRESS an old socket into the hole. This gives you the ability to put an impact on it. Never had any problems since. Simple and inexpensive! Note: do the same with an old 550 650 750 kawi coupler for the same results on billet yam couplers.

 

[Boris]

Thanks for all the replies.

I got the coupler off with a 3 foot PT 2x4.

Got the motor torn down and only broke the 2 bolts that hold the starter motor.
Tomorrow I'm going to wash all the parts at my friends shop (he has a sexy parts/dish washer) and than I think I might head over to Tim Judge for some porting.

Both bores measure 81mm but it will need to be re bored as both pistons were squeaked.

The motor did have rain water in it and there is some corrosion in there so the crank might have to be rebuilt.
Maybe TJ can get me a great deal on a new one, he has in the past.