Cylinder Plating?

[dave]

Does anybody know if the cylinders have some type of plating, like chrome, or Nikisil? How about the pistons? I'm curious about how long I can expect this air-cooled engine to run before it needs a top end. Thanks.

[the Ferret]

Judging from past Honda inline 4 air cooled motors, Im guessing 100,000 miles or more.

[rboe]

Back in the early 80's the 750's were getting close to 100,000 before a valve job was needed (if the owner did their part on maintenance). But few bikes reached those sort of numbers. GL1000's and GL1100's would and 125,000 miles seemed to be the common time frame for valve jobs. This is going back a ways so there may be a bit of rose coloured glasses effect.

On average; if you change the oil and filter often, ride conservatively for the most part, I bet this bike will out last you if you don't crash.

I feel the same for all the bikes out there. Pretty hard to find a stinker in the lot.

[Elipten_imp]

23 years ago I asked the BMW factory tech what wears out on my K75RT. He said the rider wears out! 24 years latter he was correct! The bike still has lots of life, more than I have.


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[Bayoucityrider_imp]

I have seen plenty of Honda car engines apart with well over 150k miles on them and you can still see honing marks in the good old fashion iron sleeves they use in there cars.

[flynrider]

There's a guy over on the Nighthawk site with over 250K miles on his CB750. The engine has never been apart.

[rboe]

After 250K the fasteners are completely frozen.......

[calamarichris_imp]

23 years ago I asked the BMW factory tech what wears out on my K75RT. He said the rider wears out! 24 years latter he was correct! The bike still has lots of life, more than I have.


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BMW is not motorraadfabriek it once was. I wouldn't trade your K75 for three of the new F800STs.

There's a guy over on the Nighthawk site with over 250K miles on his CB750. The engine has never been apart.

And Honda is not the quality-control powerhouse that it once was either. I predict that CB750 will outlast more than a few CB1100s.

I have seen plenty of Honda car engines apart with well over 150k miles on them and you can still see honing marks in the good old fashion iron sleeves they use in there cars.

The people and processes that produced Honda automobiles in the 1970's are not necessarily the same people & processes that are currently producing Honda motorcycles.

Judging from past Honda inline 4 air cooled motors, Im guessing 100,000 miles or more.

If I had a nickel for every misguided squid who said that about his crotch-rocket disposabike with electroplated cylinders bored into the top half of his crankcase...

[Capo]

Reputations are easy to get and hard to lose. Which is why people still project '70's perceptions on to current machines.

[Red Mist_imp]

Reputations are easy to get and hard to lose. Which is why people still project '70's perceptions on to current machines.

Yes, like some of us "old souls", I, too, yearn for the days of yore, when craftsmen who actually cared about what they were doing lovingly assembled each component into a machine that had "character"...or should I say quality? Yes, that's the word, quality. Back in the 1970's, when men were men and motorcycles were motorcycles, a guy had to know how to adjust his points, dry out his electrics, and replace a tube alongside the roadway, anywhere, any time. You had to carry a full toolkit and a couple of quarts of motor oil with you on a long journey.

Why, I remember when a guy could take satisfaction in just getting there. On one memorable ride through the desert Southwest, three of us got waylaid in the middle of nowhere in a terrific dust storm. We tangled, and without any help for days, managed to sustain ourselves on some dried fruit and a canteen of water whilst we put together a single motorcycle from the wrecks of our three machines. All six of us (we were all riding two-up) piled onto this bastard ride and made it over a hundred miles to a little craphole of a motel. The bike ate a piston just as we rode it straight into the swimming pool.

True story. In fact, I weep as a write this, the nostalgia is so thick. I'm going to go install a set of points and a condenser and a bank of Keihin CV carbs on my CB1100 right now...and I'll remove the oil cooler whilst I'm at it...