Life of motorcycle motor 100,000km?

[rocketman1]

Just been thinking about what sort of motorcycle motor "generally" gives the longest life before it start needing bearings, rings and a good old overhaul.
I have heard that a piston size of about 300-400 max cc per piston is the best, for overall longevity. Ie 300cc x 4 = 1200cc or 400cc x 4 = 1600cc well known a optimum racing car engine in cars.
I have a concern about the 1500-2000cc twins thats 750-1000cc per cylinder, a huge amount of alloy(inertia) shifting back and forth, but of course much slower than a 4 cylinder 600cc engine that is doing 15,000 rpm, but with little tiny 150cc pistons that dont have much inertia, so because of that fact may last a lot longer???
I guess it all come down to piston speed + wear, but does it?
Interested to know how many Harleys ie 750cc per piston make it over 100,000kms without an over haul.
Can Big 2000cc v twin Kawasakis and Suzukis to get to 100,000km without an overhaul?
I know many 1200cc 4 cylinder Hondas and Suzukis do well in excess of this mileage. What about the small bikes 600cc, anyone got over 100,000 km?

The Honda V4 configuration (750-800cc ) I have heard offer very high mileages before any trouble occuring.

Many car engines 1600cc etc get well over 300,000km if looked after, I'm not sure many bikes get to that mileage.

Interested to hear from those oldies with genuine mileage, as to how far their bike engines have taken them, free of trouble.

[hospitalfood]

i have an old bmw r series twin ( 1000 cc ) with over 100,000 km on the clock. reads about 75,000 miles at present and I'm fairly sure thats the second time around, so I think it may be 175,000 miles.
this is by no means unusual for an old boxer twin, i have heard of 350,000 km on the original pistons and rings etc, ie without a rebuild.

no sure about harley engines but I think 120,000 km is not unusual.
many of the bmw engines do very high km.
there is a honda goldwing for sale with 220,000 km on it at present, not sure if it has been rebuilt but I doubt it.

[caseye]

for what it's worth my old girl, Yamaha coal burning XV 1000 has recently clocked up 98000 K's with no appreciable loss of power or fluids.
Am hoping she keeps on going for many more K's an all.
I do service her regularly and change things that need it before they break.

[grusomhat]

http://www.kiwibiker.co.nz/forums/sh...d.php?t=106452

I think that's well worth a mention.

[AllanB]

I owned a 1983 750 twin Kawasaki from new for 23 years. It needed a new set of rings, cam chain and a clutch at 100,000. Everything else was AOK engine wise. Well serviced with name brand oils. I see from Carjam it's still alive

I expect my Hornet to do big kms.

[mowgli]

Triumph S4 600cc IL4 up over 82k in four years and still going strong. Most of the credit lies with the previous owner who loved it thru 70k. Regular use and proper servicing plays a big part I reckon.

[Taz]

My BMW is up to 124000kms and runs like new.

[mossy1200]

Poor attitude to service and oil changes leads to early expiry.
my bonneville has 3500ks and only 3 oil leaks so far.The leather on my boots will never crack and split.Thats character you cant put a price on.

[Ixion]

My BMW steamed past the run in point at 100000 miles last year. I can ride it a bit harder now it's run in. I anticpate no problems in the next 100000

My single cylinder air cooled Yamaha XT600 has done 99700 and odd. It's running fine, I'd be confident , engine wise of it going to 150000. At least.

One of my two strokes has done nearly 90000 on the original bores.

[cs363]

My RF900 recently clocked over 100,000km and is still going fine, feels like there's plenty of life left in the old girl yet

[1billyboy]

191890km. Only work on motor 2 valve shims a long time ago. 1 set front wheel bearings. 1 set steering head bearings.

[YellowDog]

I have a mate with a GSX1400.

Never does over 6000rpm or 100Kph.

Oil change every 5000km.

I recon it will last forever.

I just wish he would have a bit more fun

[Eddieb]

I have a few high mileage vehicles

BMW R80G/S, unsure of motor mileage but carfax.co.nz indicates the chassis at least has done about 250,000km.

I owned another R80G/s a few years ago and that was on it's 3rd time round the clock

BMW R100GS PD, 80,000km's, maybe I'll finish running it in over summer.

'97 Subaru Forester 2 litre Turbo, 302,000km.

BMW America did an advert in the 80's featuring customers who had done high miles on their bikes, the lowest is 230,000 MILES.

A mate in Hamilton had a 91 GSXR-1100 a few years ago, at 100,000km he got the shop to have a look inside, the only wear they could see was the a tiny amount on the right most camlobes, they reckoned it was from warming it up on the sidestand each morning, that was the highest point in the motor so the last to get oil.

[Subike]

My old 70 Yamaha XS1100 has clocked up 160k on one rebuild,
but there is another KB'er with an XS1100 who had it from new, he managed to clock up 350k before the crank snaped.
The life of an engine depends upon how it is treated and serviced.
heavy right wrist, heavy maintenance bills, short life.
It all depends upon how you treat the engine and drive gear.
Regular servicing and consistant riding
Long life comes from respect.
Abuse will empty your wallet really fast.

[Pedrostt500]

So who has the bike with the most Proven KMs on it, ie paper work to back the claim up, no engine change outs, so same frame / engine Nos as from new.