Case splitting. NO NO !!

[rtboone]

Greetings

Here is a good example of the result of inappropriate case splitting technique used by a "DPO".
There is a much better way as described in the technical tips section titled " Break the case wide open" than using a flat blade screwdriver.
I think that the cases can be used again. Thankfully the screwdriver user didn't pry in the crank area. The thin aluminum wedges at the top of the crank area are broken off---I suppose from a broken ring circulating around for a bit--- and I am not sure how important these are. Maybe, some one can educate me on their function/importance?
The crank, tranny, clutch and drive gear are all in good condition so at least that is a plus.

Tom

[bchappy]

WOW! Looks like the screw driver was driven in with a hammer.

[Bullfrog]

Oh My! Those are DPO tracks for sure!

- I'm not sure what you mean by "thin wedges at the top of the crank area".

- I'm concerned about the fractured off retaining ring boss for the mainshaft bearing.

- I agree that it looks like the cases can be properly sealed . . . but check 'em over absolutely everywhere for as yet un-noticed damage.

Ed

[hodakamax]

Ed, I've been looking at that and I think it's an illusion. It appears that the retainer ring is in the groove after further study. I've only built one RT engine and that scared me when I first saw that the retaining ring boss did not go all the way around in that engine as I recall. At first I thought something was wrong but quickly realized that's how they are.

Max

[rtboone]

Ed
Thanks for the reply.
The wedges --- don't know what else to call them--- are right beneath the iron cylinder liner. They aren't very long. Maybe 1/4" .
The ring boss is, in fact, not fractured. It just appears that way from the angle and shadows in my first photo.
Here are some better shots.

Tom

P.S. That gape in the main shaft boss is to give clearance for the kick start gear on the output shaft.

[Bullfrog]

OK. Those "thin wedges" (actually a pretty good description) seem only to be "filler" to me. Smooth up the edges and you won't notice any adverse effects on engine performance. I've included a pair of photos of a 125 case half - no "thin wedges".





Ed