Honda cam bearing modification

[lingeringstin...]

I never noticed this before but have a look at this picture:


RNA4902
https://s28.postimg.org/58pbw2hnh/image.jpg

Is that a little hole in the bearing for the oil to go through? If so then this would be a fantastic replacement for those self destructing Honda style cam bearings. On the Honda style engines the bearings line up by way of a little sticky-out bit that sits in a special groove and oil is pumped through the hole in it. If these needle roller bearings also have a hole then all is well.

I'd never noticed the hole before because the other pictures of these bearings I'd seen didn't show it but as I was about to order some I saw it. This could be a good thing.

[RhynoCZ]

I would say so, it does look like an oil line.
____________________
'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[V2]

yep that's the oil/grease hole

[RhynoCZ]

Ah, of course, now I know what's it for. You fill the bearing with grease through there. The bearings ship dry.
____________________
'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[MCN]

The groove is the lubricant channel and the holes allow lubricant to flow into the bearing rollers.

Roller bearings are magnificent machines.
____________________
Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN.

[c_dug]

[V2]

we have those too, sprag clutch bearings, engineering masterpiece!

[lingeringstin...]

Then why did Honda use weird self destructing solid cam bearings for decades even long after they had become known for being an issue?

Anyway, I'm ordering some for my cam. I can't see any reason why they wouldn't work great.

[RhynoCZ]

[skatefreak]

Christ alive,
my 1.9 turbo diesel doesn't even have bearings on the cam .

Now I'm thinking about how to machine it back and get some of those in there

[lingeringstin...]

Interesting point there. When I was a kid there was a farmer lived near us who had old cars, one of which was a terribly ratty Model-T that he still drove around a lot. Apparently the car had been upgraded constantly over the years by doing things like fitting modern wheels and brakes and modifying bits of the engine to take proper bearings where things like leather used to go and that sort of thing. I remember as a kid seeing him absolutely hooting down the road in that old beater like it was a modern car. That is probably where I first got the idea of fixing up useless shit just to see if it could be done.

Trigger's broom.

[RhynoCZ]

Well lingeringstin..., if you keep fixing your vehicle and updating it, it'll live forever, unless the rust eats it away. Old cars had lower standards to fuel and oil. Old 4 strokes, requiring lead, may be modified to run on unleaded petrol. I mean, you wouldn't fitting ABS (not impossible), TCS, ESP, airbags and other toys, obviously.

Also, not sure about the outside world, but in the Land of Beer the law and regulation never acts retrospectively (Criminal law is an exception). So you may still legaly drive it, the MOT reuirements are still the same...
____________________
'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[pepperami]

I'd guess it's an oilway.
However , it might be a good idea to make sure it's not a blind hole for a locating peg.

Just a thought and my
____________________
I am the sum total of my own existence, what went before makes me who I am now!

[Kickstart]

[MCN]

[RhynoCZ]

[A100man]

Yep, 40+ years now and rolling. For a long while it was stuck at pre-72 though
____________________
Now: A100, GT250A, XJ598, FZ750

Then: Fizz, RS200, KL250, XJ550, Laverda Alpina, XJ600, FZS600

[Tankie]

Pre 1960 , no mot or tax needed
Pre1976 no tax
____________________
Always learning, everyday is a school day

[Kickstart]