1800 project

[Phil_one]

1800 challenger project is on the go. Have been trying to get both 787s going but wont turn over. I removed the heads indexing looks the same on Both sides so that is a good thing.i then removed the shield with the coil in it and can't turn them there so when to the back and took off both impellers can't turn it there I don't want to grip on to shaft dose any one have idea of a socket the would fit the end of drive shaft so I can try to unstick it.

Thanks

 

[parrothd]

huh? You should download a service manual....

Use a pipe wrench on the pto(big white or grey flywheel attached to the impeller shaft)

fyi, if the engine is not turning over by hand with the plugs out it's locked up and needs to be fully rebuilt (rebuilt crank, and pistons/rings,etc, etc). If you unstick them and then run it may work for a while until it explodes and ruins the cases costing you more money. You may want to check SBT rebuilt engines, save you some $$$ and time..

 

[Phil_one]

I have a manual online but no in for about this that I can see.

 

[Gamerse]

If the plugs are out, and it will not turn, pull the heads and take a look. You may be dealing with a rust issue.
:cheers:
Ernest

 

[Phil_one]

I have removed the heads they don't look amazing but not that bad

 

[Gamerse]

From what I understand, you have pulled both jet pumps, and both engines will not rotate.

Well, now that you can see what you are working with, if the engine is still seized, you can try plugging any ports that are visible in the cylinders, and fill them with kerosene, and a bit of two stroke oil. Let that soak overnight.

If it still refuses to turn the next day, you can pick the highest piston in the engine, put a block of wood on it, and smack it with a hammer a few times. It should break loose. Good luck.

:cheers:
Ernest

p.s. the FSM allows for the use of a pipe wrench on the PTO wheel. If no wrench, there should be a nut on the flywheel you can use a breaker bar on. The FSM says torque is 77ft-lbs, so you should be able to apply a good amount of leverage to it.

 

[parrothd]

They're toast, you need to stop messing around trying to "breakem lose"...

 

[Seadoobuddy]

In case I need to do this in future projects. How do you plug up the ports in the cylinders???

 

[Gamerse]

Use whatever plastic that is handy that will not melt in petroleum products, and shove them in the hole. You do not have to stop it from draining into the intake or exhaust, just slow it down enough to let the kerosene penetrate the corrosion. You could also use cylinder leak down testing plugs, I usually make my own.

I would call SBT and ask if there are any extra charges for seized engine cores before I sent them off.

:cheers:
Ernest

 

[Phil_one]

I did not have any time to look at it tonight but the fsm pic looks like it is a greas fitting so thare is a belt on it that I can get a good grip on with out bracking it? I have not taken the boots off to look yet it is a small place for a big guy.