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OLD MAN SLINGER RANT!!
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Re: OLD MAN SLINGER RANT!!
Re: OLD MAN SLINGER RANT!!
Now, after a lifetime of learning the right/hard way, we are necessarily more careful. The same bikes are much more expensive, so we're more careful. We have families, bad backs, responsibilities, none of which fit on a bike, so they are more of a valuable heirloom.
But, a bit of sun and a twisty road and they're still fun.
Charlie.
Re: OLD MAN SLINGER RANT!!
Back in the 70s and 80s every one was predicting doom from unleaded gas eating the valves and seats. I ignored that and still have loads of adjustment available.
Then, with the internet, came pictures claiming disaster caused by the slinger, from engines that obviously were long over due for an oil change.
These are hand built engines, assembled by experts. My opinion is don't mess with perfection without good cause.
And does anyone still put thousands of miles on their old bmw every year? Tearing down the engine for a future that is never going to happen seems like a dangerous gamble.
Don
All on the road, going no where in particular in the Finger Lakes of New York
Re: OLD MAN SLINGER RANT!!
Old, straight oils did not include such additives so the strategy was to centrifuge the aggregates out or settle them in the sump or oil tank.
I don't think that pre-1969 BMWs are any more vulnerable to this than other old bikes, in fact probably less so than most.
So in answer to the question "How can detergent oil cause the rock-hard slinger deposits to go into suspension?":- well, it is highly unlikely that it will, any lumps of aggregated sludge doing the rounds will probably have come from somewhere else, but of course, a heavily impacted and full thrower trap will not catch it before it sticks in some bottleneck.
I have stripped a few Nortons where the hollow crankshaft was absolutely chock full of solid sludge and it had also built up around the rocker gear, but the engines had suffered no harm, but by contrast my cousin bought a time capsule BSA Road Rocket which had been in a lock-up since 1968 and it went less than 100 miles before a monumental blow destroyed the engine, and the remains were remarkably clear of sludge when I stripped them.
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Re: OLD MAN SLINGER RANT!!
- TaosTwinCam
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- VintageJim
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Re: OLD MAN SLINGER RANT!!
- schrader7032
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Re: OLD MAN SLINGER RANT!!
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
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Re: OLD MAN SLINGER RANT!!
LOL!!! When did we get to be "Old Men"?!! Last I looked I was still in my 30's!!
Todd/R68,
Definitely on target. I rarely let a new motor go more than 50 miles before the first oil change. Again at 100 miles or so, 500 miles and every 1000 thereafter...
Also, hate to start another controversy/oil thread, but... for my old rides with less than perfect history, I make sure to run non-detergent oil in them. No need to "wash" all the built up crud on the crankcase walls, etc. into the oil and then into the rest of the motor. On new builds that I know are clean from the start, I typically run a high grade detergent oil as I'm not worried about "loosening" old crud. Not sure if there is any actual science behind this but it makes me "feel" good.
Chuck S