ca77 engine halfs switch question

[LOUD MOUSE]

When ya remove the loose part ya can look and see where the bearing oil hole is and then determaine where/how much J.B. WELD to use and when the install the pin.
Only caution is to make sure ya don't fill in the oil hole. .........lm

sounds good with the jb weld...should the jb weld be put down in the hole and set the pin to the correct height to cure and in the crack on the outside of the case? thank you again...billy

[jensen]

Hi,

I was intrigued by this crack, so I looked in my garage to see if this crack appeared in other crankcases because I was sure that I saw this before.

Well, I found another case, just like yours, with the same crack in it. I'll take it to the metallurgist and see why it's there.

Jensen

[jensen]

Hi,

To compare even better, I put both cracks in the same size photo's.
It seems that both "cracks" are almost identical, some sort of footprint from the mould.

I tested this crack in the morning, and it's not really a crack, more a open surface, well, as I'm not a specialist on old aluminum -zinc alloy castings, I will see what the metallurgist says about it, I'll speak him this week.

in the mean time I'll check my other crankcases, from both CB72's and C's to see weather these casings have the same "crack".

Jensen

[LOUD MOUSE]

Check the inside of the clutch cover and ya will have your (visual) answer. ..........lm

Hi,

To compare even better, I put both cracks in the same size photo's.
It seems that both "cracks" are almost identical, some sort of footprint from the mould.

I tested this crack in the morning, and it's not really a crack, more a open surface, well, as I'm not a specialist on old aluminum -zinc alloy castings, I will see what the metallurgist says about it, I'll speak him this week.

in the mean time I'll check my other crankcases, from both CB72's and C's to see weather these casings have the same "crack".

Jensen

[billyfly1]

very interested in what u find out since i am just about ready to put this back together thanx again ...billy

[jensen]

Loud Mouse,

You talk in riddles, I checked my clutch cover, what am I supposed to see ?
I see nothing in particular, except that the "crack " runs to the clutch center bearing.

I do not have the clutch cover with this crankcase, but picked just one.
LM, help me out here with conclusions.

Jensen

[billyfly1]

haha...i was hoping someone said that...i too have looked at the side cover...but for what?