What is this?

Finnigan

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Can someone identify what happened here? It looks like the previous owner broke or ground down something on the engine cover :o
 

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I thought the tach was attached to the top of the engine?

The rear of the engine cover looks like an oil channel
 
It's drilled for the oil galleys and then resealed at the factory. Nothing to worry about so long as it stays sealed. If you're concerned about looks, you can fill in the hole with some Devcon F and sand it smooth.
 
Hard to tell from the picture, but it is a blind hole? right? No oil leaking?

Then it is only cosmetic.
 
Finnigan said:
I thought the tach was attached to the top of the engine?

The rear of the engine cover looks like an oil channel

Depends on the bike, my CM450 had the tach takeoff on the sidecover next to the oil filler/dipstick. Wasn't sure what bike the cover was for. Some models didn't come with a tach and they left the spot like that, undrilled.
 
Maritime said:
Lets see the back side of the engine cover.

The passage is an internal oil passage....the oil filter interface is in the center, the tube in question is to the right in this picture. It is an access point to machine the internal passages.

oilsupplyfittinglocatio.jpg
 
Nice pic. and explanation
You need to get rid of the silicon, that's what breaks off and plugs the oilways to head (on any motor not just 360's) seen a LOT of inline 4's with destroyed cam bearings because of it
BTW, the spring loaded 'plunger' is what causes cam bearing problems on 360's, the oil has to go through the gap between center 'tube' and inside edge of 'plunger'
Thick oil and/or high rpm makes it compress spring sending oil back to sump.
Usually plenty of oil mist to keep main bearings happy but cam bearings don't like being oil starved.
 
That silicone was from 198? or so. I didn't know better back then. Haven't used it for decades. I found out back then that it wasn't really oil resistant. Tried it on my carburetor (the o-ring stretched out, and it was my daily driver, it got me back on the road for a short time) and the excess softened and swelled into a gel like substance that clogged the carbs. That's when I stopped using it.

That pic was the first time I took the case off since 198? ... No silicone anywhere on it bot over the carb shaft where the seal fell off. And thanks to you, will be replaced with something far prettier.

But thanks for the heads up anyway... 8)
 
Never know, this may help prevent someone destroying a motor? ;)
Still a good pic, scanned from35mm or digital original?
 
Digital....My Canon AE1 hasn't seen film for 10 years now. I have a beautiful set too, Autowinder, Sunpak 522 Flash, Zero Haliburton Case, Meters, too many accessories to list. The film is expensive, and fragile. My Digital Camera has an 8 gig Chip and can hold 2200 pics or so....I can post process the pics, and do all sorts of Photoshop stuff.

I used to like Kodachrome 25, but it isn't even made anymore.

I loved the 35MM, but the digital, especially nowadays, is just better....
 
One advantage of film, particularly with manual camera, you can just have it ready and hit shutter
Digital has to be switched on first and battery could be dead by the time picture op occurs.
I used the hell out of Cosina CSR, spot metering otherwise all mechanical.
Even won a competition with it (in 1980 ;D )
Favourite lens was 200mm
 
Oh, I like film, but I can be much more sloppy with digital. High resolution and post processing allows really sloppy framing and composition. As long as it is in focus....

I take a lot of pictures for work. It is so much easier to take a shot, and send it to someone 10 minutes later. Can't do that with film, turn around is too long.

I carry 6 batteries with me. I have a Sony camera and the batteries are light, last a while, and keep their charge pretty well.

The last sony I have has a pretty fast ready time, not as fast as my AE1, but I can take a shot, send you a picture in 5 minutes. I can't do that with film.

I do miss Kodachrome though. the color saturation, fine grain, were just marvelous. I used it even for print work. A good slide is much more versatile than a negative.

I still have my Carousel projector, even some unopened carousels. I can't sell them until I scan in the old slides, and I haven't had time for it....


Sorry for the thread Hijack, but CrazyPJ is an interesting guy...
 
Here's a shot of the area that is "normal":

clutchcaseblindholeonto.jpg


I'd fill the hole with JB weld, or maybe an aluminum colored epoxy, so it it less noticeable.
 
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