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Is the K&B .65 a good engine? I found a new one in the box.

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Is the K&B .65 a good engine? I found a new one in the box.

Old 03-04-2007, 08:47 PM
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sticktickler
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Default Is the K&B .65 a good engine? I found a new one in the box.

Got this last summer never been run are they anygood? Would you put it in your plane?
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Old 03-04-2007, 09:24 PM
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Tall Paul
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Default RE: Is the K&B .65 a good engine? I found a new one in the box.

Yes. I'll PM my address and tell you how it is!
.
BTW.. the designer, Bill Wisniewski, passed away Friday night.
Old 03-04-2007, 11:23 PM
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nekked_man_2000
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Default RE: Is the K&B .65 a good engine? I found a new one in the box.

My dad has one and it runs just fine. It's not the same as say an OS .61 or whatever. I like how quiet it is with the stock muffler. He has his on a .60 size stick and it's never given him any trouble. He also has a .21 (or .20??) and a .45. The .45 won't run a full tank through for some reason but the .21 runs fine. We think the .45 doesn't have a good seal on the O-ring on the head for some reason.

More info than you asked for. Yes, it's o.k.

Austin
Old 03-05-2007, 12:54 AM
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KidVermin
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Default RE: Is the K&B .65 a good engine? I found a new one in the box.

Although not the most popular engine in the K&B line, they were meant as an entry level mid size motor. A non bearing engine using bushings. The carb was inconsistent to set. A couple of pilots in our club either switched to an OS carb or a Perry that would fit. The .61 was a bearing model and better engine, but your's will still be fine to play with. I had the Magnum .65 econo. bushing model and it flew fine for almost 5 seasons; just be sure to use 18% oil only and never get it too lean. Heat is guick death for those bushings.
Old 03-05-2007, 01:22 AM
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Dave McDonald
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Default RE: Is the K&B .65 a good engine? I found a new one in the box.

The K&B 65 takes about an hour of running time to break in, but after that it runs pretty darned good. The 65 isn't a screamer like most other 61s, it's a torquer.......like a four stroke. In fact, if you prop it like a 61 two stroke, you'll hate the 65. But if you prop it like a 91 four stroke, you'll be happy.

The only problem with the 65 is that the needle valve assembly is held into the carb body by nothing more than the friction fit of two O-rings. After losing the second needle valve assembly inflight, my 65 hasn't been in the air since.
Old 03-05-2007, 02:04 PM
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Default RE: Is the K&B .65 a good engine? I found a new one in the box.

this is a good engine but it has no bearings to rust and no bushing.it uses a high silicon content aluminum alloy that acts like a bushing.12-6 13 -5 props
Old 03-05-2007, 02:43 PM
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k3 valley flyer
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Default RE: Is the K&B .65 a good engine? I found a new one in the box.

NO and NO. I had two of them, got rid of both after 1 season. I found them to be high vibration and made of "pop metal". Some people like them, power for price was good, quality was poor.
Old 03-05-2007, 10:23 PM
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Default RE: Is the K&B .65 a good engine? I found a new one in the box.

LIKE ANYTHING IT DEPENDS ON WHO YOU ASK ~ IT IS A LOWER END OF THE LINE ENGINE AND AS SUCH WERE/ARE INEXPENXIVE TO BUY ~ HAVE MANY .45 AND .65 AND I PUT A LOT OF HOURS ON THEM ALL EACH SUMMER IN CLUB TRAINERS AND FUN PLANES AND RUN RICH THEY SEEM TO GO ON FOREVER. I NEVER HAD TROUBLE WITH THE O RINGS OR CARB SETTING BUT A FEW OTHERS HAVE. ALSO HAVE TO BE CAREFULL NOT TO STRIP THE THREADS IN THE MUFFLER BUT IF YOU DO CAN SLIP IN A NUT AND LOCK WASHER. EASY STARTING AND GOOD RUNNING ENGINES IN MY EXPERIENCE AND WE PUT HUNDREDS OF HOURS ON THEM EACH SUMMER TRAINING. WE PREFER A 13X6 MASTER PROP ON THE .65'S. FOR WHAT IT IS WORTH! AL
Old 03-07-2007, 12:55 AM
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cfischer505
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Default RE: Is the K&B .65 a good engine? I found a new one in the box.

If its the Sportster, yes I had one and it was a very strong engine. with a 12x6 prop it will almost keep up with the same plane with an OS 70 FS in a vertical climb. If your in an area that is 3000 feet above sea level you may have have to try a 13x5, the main thing is keep an eye on engine temp and dont run it too lean.

Good Luck
Old 03-07-2007, 12:33 PM
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Default RE: Is the K&B .65 a good engine? I found a new one in the box.

no such thing as pop metal there is pot metal but these engines are not made from that.
Old 03-07-2007, 08:19 PM
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Default RE: Is the K&B .65 a good engine? I found a new one in the box.

Funny thing happened last week...I too found one NIB.....man I gotta keep looking for 'stuff' - no tell'n what else I have that I don't know about!!!
Old 03-10-2007, 01:19 PM
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Default RE: Is the K&B .65 a good engine? I found a new one in the box.

hi
I had bad experiences with the K&B sportster series engines. thru dumb judgement lost 3 airplanes. two with .45 and one with .61 (these were sportster series). they are junk made cheaper than originals.

the older k&b 40 and 60 engines were very good and reliably, still using a .61

frankly I would not trust their reliability

good luck and happy flying

pt19 flyer
Old 03-10-2007, 04:12 PM
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bolar
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Default RE: Is the K&B .65 a good engine? I found a new one in the box.

I've been using a .65 Sportster (Master Airscrew 14X6) 15 seasons now on the same plane. It's a most excellent engine [8D].

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