Splitting the crankcase on CA160 engine

[kmil]

I am finally getting around to replacing the crankshaft on my CA160 engine to see if I can get rid of the knock in the left side. I had had the engine rebuilt not long ago but after only a few miles it starting knocking again. I have followed all the steps in the factory manual to remove the crank and can not get the crank cases to split. I have used a rubber hammer and a plastic hammer but it won't budge. The manual says to hit the mounting bosses but that doesn't seem to work very well. Any suggestions as to what might help. I'm afraid of breaking the aluminum webbing by hitting the mounting surfaces.

 

[RobMan]

I am not familiar with the 160 but when I had the same problem on my 450 I found I had missed one of the case bolts. Double triple check and compare to the FSM.

 

[EzPete]

If it was recently rebuilt, the hondabond is likely still fresh and may have been rather liberally applied. In addition to double checking all of the screws/bolts from both sides, getting all of the seals out that you can removes some of the adhesion points and gives some finger holds to pull with - some of these can be a bear.

 

[ancientdad]

Take a look at these two parts fiches and see if you've removed all lower case bolts and nuts from studs

 

[oldjeep]

If you have - hit it harder. It took a lot to separate the case halves from both of the ca95 engines that I stripped.

 

[kmil]

Well, I finally got the engine cases apart. I had to take the hit it harder approach. There was not a lot of Honda bond holding it together. It was a very light coat without any bleed over. I hope to do as well when I put it back together.

 

[EzPete]

Well, I finally got the engine cases apart. I had to take the hit it harder approach. There was not a lot of Honda bond holding it together. It was a very light coat without any bleed over. I hope to do as well when I put it back together.

After 60 years those things basically fuse together.

 

[ericfreeman]

I use a small syringe with a very small tapered tip to dispense a narrow bead of case sealant. Works great at getting the sealant just where you want it and in a minimal quantity.

 

[kmil]

That sounds like a good idea. Thanks.

 

[kmil]

Just an update to all. I got the engine built and reinstalled. The knock and rumble are gone. I've put about 100 miles on the engine and it seems to be running fine. It had to be a bad bearing on the crank even though the crankshaft looks and measures good. That's a win in my book. Thanks for the help.

 

[ancientdad]

Just an update to all. I got the engine built and reinstalled. The knock and rumble are gone. I've put about 100 miles on the engine and it seems to be running fine. It had to be a bad bearing on the crank even though the crankshaft looks and measures good. That's a win in my book. Thanks for the help.

Thanks for coming back to let us know it worked out well.