Posts by tag: six cylinder

Benelli September 16, 2018 posted by

Oh Sei – 1983 Benelli 900 Sei

New CEO DeTomaso ( yes that one ) led the historic Benelli company to higher performance machines and the 750 Sei ( Six ) in 1973.  Benelli increased bore and stroke on the Sei to displace 906cc for the 1979 model year.  Simultaneously outrageous, exotic, handcrafted, and occasionally disappointing, the Sei was Benelli's flagship until they merged with Moto-Guzzi in 1988.

1983 Benelli 900 Sei for sale on eBay

Looking for all the world like a SOHC Honda engine from the era, the Sei had some innovations, like placing the alternator behind the cylinders ( which were wide enough already ).  80 hp were routed through a 5-speed and double-row final drive chain, speaking to the torque that was available at just above tickover speed.  Good as they are, the Brembo brakes are hopelessly outgunned by the power and mid-500 lbs. weight.  In spite, the Sei got high marks for handling, steady in a corner when the competition was wallowing.

Looking excellent in its late -70's flowing bodywork and controls, this Sei has just over 11,000 miles.  A machine of this age will have an afternoon's worth of tales, but the owner stays on message in the eBay auction:

A meticulously maintained 1983 Benelli 900 SEI with extremely low miles at 11300.
This bike is almost perfect, serviced and runs and drives perfectly.
They don’t come up often so here is an opportunity to get one.
Bid with absolute confidence.
Don’t waste my time with silly questions, low offers and if you don’t have money.
Viewing is welcomed before you buy.

Already in boutique territory, the Benelli pricing and complication of three carburetors made the Sei a rarity.  Performance was a few bullets down on the mission statement, under pleasing the crowd, honoring the Benelli name, and showing off the factory's skills.  Further down was a reliable ride, and the Sei got gigged repeatedly on electrical issues.  But the sound !  More 911 than motorbike, especially with the six-into-six.  For a collector with a European interest, this is just the bike for the end of the row...

-donn

 

Oh Sei – 1983 Benelli 900 Sei
Benelli February 28, 2018 posted by

Oh Sei can you see? Two Benelli SEI 750s on eBay

In striving to bring readers the best online classifieds every day, RSBFS writers are besieged by drought and deluge. Some rare machines might not be seen for months or more, only to arrive in pairs. Such is the case with today's 12-cylinder post; not one but two awesome Benelli 750cc six cylinder examples for your enjoyment. Widely known (pun intended) as the World's First production six cylinder motorcycle (despite the later attempts by Honda, Kawasaki and BMW), the Benelli was a technical and stylistic tour de force. Engineered by none other than Alejandro de Tomaso of Pantara fame (the sports car, not the band), the Sei persisted for more than 15 years until the ultimate merger of Benelli into Moto Guzzi. Interested in one of these ground-breaking machines? Read on!


1977 Benelli Sei 750 for sale on eBay

The first of the 750 Benelli Sei models were introduced way back in 1973. While Honda was busy wowing the world with their four-cylinder technological might, de Tomaso sought to one-up the Japanese by tacking two extra cylinders onto a copy of the Honda power plant. With that move, a 500cc four became a 750cc six - and history was made.

To keep the already portly engine block from becoming too unwieldy, de Tomaso re-positioned the alternator from the end of the crank (where it sat on the Honda) to behind the cylinders. This move not only narrowed the ultimate width of the engine, it also started a trend to centralize mass within the frame; a discipline followed to this day. Total power was not tremendous - rated HP was a mere 72 ponies.

From the seller:
Up for sale is this extremely rare 1977 Benelli 750 “Sei” (Italian for “six” – not “sex”!), one of the three vintage six cylinder bikes ever made. It is an un-restored original in excellent condition, With a clear title and only 10,463 miles, (16.742 Kilometers) this is one of the nicest survivors of only a thousand 750 Seis imported into the US from 1974 to 1978. And it’s a “rider,” not a trailer queen: driven once every month or two, and only in clear weather – has never been in the rain, nor been dropped or scraped. Only cosmetic flaw is a tiny chip on the tank.

In the year 1977 only 283, 750 Sei were made, making this year a very rare one. Breaks got a tune up and work just as well as a modern bike, all switches and gauges work as they should, gas tank received a coat treatment to prevent rust, it has new air filters, recently got carburetor tune up. This bike only has a small dent on one of the exhausts and very small paint chips on the gas tank(please see pictures).

I will include some spare parts, a copy of the owners manual, a copy of the shop manual, as well as a copy of the spare parts manual. Some magazines in which the bike was featured at that time. Previous owner kept this motorcycle in a museum. This motorcycle is only missing the tool kit and the rubber strap that holds the gas tank.

This particular 1977 example appears to be in great shape. Benellis of this era were not exactly known for robust reliability, so it is actually a huge benefit that this is a regular rider. Nothing ages a motorcycle like stagnation, and this one has thus far avoided the neglect that many of these complex machines have suffered. Check it out here, but be sure to bring lots of Lire - the starting bid for this one is a cool $19,000.


1979 Benelli Sei 750 with ZERO miles for sale on eBay

The Benelli Sei is as much an exercise in excess as anything you are likely to see. The frame is dominated by the huge engine and offset by six exhaust pipes. Nothing on this bike is subtle, nor was it meant to be. The visceral elements of the Sei were created by famed Carrozzeria Ghia (think of the VW Karmann Ghia or the Ferrari 212), the bodywork as striking as the mechanical elements. Benelli - under the guidance of de Tomaso - was going to make a statement: the Italians were the equal of Japanese technology and held all the cards in the styling department. At the end of the day, they surely succeeded.

Today the Sei continues to be more distinctive than anything short of a one-off, overwrought custom cruiser. To consider that this was a production model for sale publicly throughout the 1970s and 1980s is unbelievable. It is also pretty rare. Sei models were considerably more expensive than mass-produced counterparts; the dealer network was smaller than Japanese, German, or even other Italian marques.

From the seller:
1979 Benelli 750 Sei. This is a once in a lifetime opportunity to buy a zero mile... yes , zero mile motorcycle. Here is the story as I was told when I bought it. This motorcycle was purchased new by a Florida collector, who at the time of his death (about 2 years ago) was 82 years old. The previous owner had amassed over 300 motorcycles, many of them being rare, high ticket items.

His widow sold 70% of his collection to a German collector, as a package deal. I managed to get a few of his other bikes, two of which were Benelli 750 Sei zero mile bikes. This collector, as described by his brother, was extremely eccentric, and not particular about the absolute care, and method of storage for his motorcycles. Consequently, although a zero miler, it does display various imperfections which are visible in the photos. Please feel free to contact me and we can do a video walk through closeup of the specifics. Included with the sale are, the original toolkit and manual.

1977 is listed as the final production year of the 750 model; the 900cc replacement version of the Sei entered as a 1978 model. However it is not uncommon for model year data to be based on the sale or registration of a given bike. It is also not uncommon for smaller European brands to have somewhat erratic record keeping, making exact determinations difficult. Regardless, this claimed ZERO mile example is certainly an albino of the Unicorn world. Low mileage specimens of low-volume production models will always perk the interest of collectors. There are lots of questions on this one - including the overall condition - but the seller seems open to answering them. Check it out here, and once again bring lots of Lire to the party: this one is $24,000 in a Buy It Now format, with the seller open to offers.


At the end of the 1980s Benelli was absorbed by Moto Guzzi. The name and rights were later sold to a Chinese company, and Benelli enjoyed a brief US revival in the early 2000s with the three cylinder Tornado and TNT models. Today Benelli - while still officially headquartered in Pesaro, Italy - is a Chinese company that partners with with DSK Group of India, producing smaller and middleweight motorcycles and scooters for those markets. There are Benelli imports into the US, but only officially through a third party (SSR Motorsports). The glory days of Benelli being a power house of style and technology are largely over. Better collect an old school example when you still can. Good Luck!!

MI

Oh Sei can you see? Two Benelli SEI 750s on eBay
Honda October 13, 2017 posted by

Featured Listing: 1979 Honda CBX with Matching Helmet!

Update 10.27.2017: SOLD! Congratulations to buyer and seller! -dc

In 1978 Honda stunned the motorcycling world with a technological tour de force. The six cylinder, 24 valve CBX was the most ambitious - and the most visceral - Honda project to date. Dominated by an air-cooled inline format mounted transversely, this Honda made a statement like no other. And while Benelli introduced the world's first production six cylinder motorcycle, Honda completely owned it and made it their own. Seemingly an engineering exercise that got out of hand, the Honda CBX remains a remarkable piece of machinery. It is coveted by collectors as well, with prices following suit.

A bit portly at 600+ pounds wet, the CBX was considered a superbike at it's 1978 introduction. Part of that reason is that the world had never seen anything like it. With more than 105 HP on tap, the big bike was as strong in performance as it was stunning to look at. While you might not know it by looking, the big six was actually an evolution of the 50cc and 125cc GP race bikes of the 1960s and early 1970s. Honda claimed this lineage not only aided in meeting the performance targets of the 1047cc, 24-valve DOHC inline six cylinder, but also dramatically shortened the gestation period since this was a route already well traveled by Honda engineers. As a promotional stunt Honda provided bikes to the Isle of Man TT, which were utilized by course marshals and made a statement as to the sporting intent of the flagship Honda. Capable at the dragstrip, decent on the road course (especially endurance events), and at home at any boulevard in the nation, the CBX delivered on Honda's promise of engineering excellence.

From the seller:
1979 Honda CBX

This CBX bike comes from BAC, the famous automotive and motorcycle collection. In the early 2000s the owner of a famous automobile collection decided that post war 1970s and 1980s motorcycles were some of the most unappreciated classic bikes and set out to buy the best of the best of all the iconic bikes. The owner is nearing 80 years old and has decided to sell off his collection of Italian and Japanese classic bikes of the 1970s and 1980s.

More from the seller:

The CBX in this ad took him three years of traveling across the country to find the best CBX he could find. While the bike has just under 10,000 miles on it, the current owner is the second owner. The previous owner who purchased the bike new only drove it on sunny days and it has never seen a drop of rain or any major dust or dirt. Everything is original bike except for the bearings in the rear swing axle. The bike even has a matching color Honda period correct helmet. The owner says without a question; this has to be one of the finest CBXs in the nation. It runs perfectly and has never been taken apart and nothing sounds like a Honda CBX when it is winding up through the gears.

More from the seller:
The owner said in his opinion the most important part of any collector bike is the mufflers as they are almost in all cases impossible to reproduce. The mufflers on this CBX are immaculate.

This bike also comes with a matching helmet!

This 1979 Honda CBX is located in Chicago land: $14,500

From the pictures of the enormous engine, you might think you need to be a bow-legged cowboy to ride one. But thanks to intelligent design, that is not the case. Not only did Honda cant the cylinder bank forward some 30 degrees, the intake setup is arranged in a vee format to further narrow the bike's midsection; despite engine dimensions, there is plenty of room for the rider. And with a jack-shaft arrangement that moves ancillary components from the ends of the crank to behind the motor, the CBX is not nearly as wide as you might otherwise imagine.

Built from 1978 through 1982, the CBX was but one of the incredible models that Honda created during this wild time; other examples include CX500 Turbo, CX650 Turbo and later the V45 Interceptor. Yet the more conventional CB900F was the real showroom performer, outselling the engineering oddities by a large margin. As a result, the CBX remains a relatively rare model. Yet it still presents an amazing sight, and continues to stun today. The 1979 Honda CBX shown here is a low mile example. More importantly, this is a a completely original example that was recently liberated from a larger collection. If you are in the market for a 1970s collectable Honda, you want to source the cleanest, best example you can find. This particular machine meets those specs easily. The asking price is $14,500.

MI

Featured Listing: 1979 Honda CBX with Matching Helmet!
Benelli March 15, 2017 posted by

Italian Week Continues: 1983 Benelli SEI 900

We seem to be celebrating an Italian theme on RSBFS this week. That is not too surprising, as pound-for-pound the Italians produce more lust-worthy hardware than most. I'm not discounting the ruthless efficiency of German machines, nor the bright spots in the Japanese flood of scooters; however if you tally up the total number of bikes produced by a given nation and identify what makes you drool, one small country stands out above the rest. Why? A unique combination of passion and performance would be the likely answer. Can we name a few brands that we might like to own? The list is long and glorious: Ducati, Bimota, Moto Guzzi, Moto Morini, Cagiva, Laverda, Aprilia and MV Agusta. That doesn't even count the bespoke builders of dreams: Mondial, Morbidelli or Ghezzi-Brian. Have I missed one? Probably more than a few. Nobody but the Italians are able to artfully blend the focus of performance with visceral good looks and color. Today's example is this gorgeous Benelli SEI 900.

1983 Benelli SEI 900 for sale on eBay

Look past the miles-deep pool of red paint. Shield your eyes from the sparkle of the chrome. Ignore the mags, the quarter fairing, the set and the stance. Strip everything away and go back to basics. In this case it is a fabulous 900cc inline six banger. The first to release a six cylinder into production - originally a 750 - the Benelli SEI 900 utilized a larger bore & stroke to provide additional motivational might. With a quarter fairing evoking a period Laverda or Moto Guzzi, the SEI was a technological, aural and visual bombshell of the time. Eschewing the 750's six-into-six exhaust in favor of a six-into-two, the SEI looked more like a normal motorcycle from the side, although from the front it was all but impossible to hide the width. This seller obviously cares about this bike and it's history, so we'll let him pick up the story.

From the seller:
There is a good article that says this is probably 1 of approximately 80 Seis 900s imported to the US. “By the end of production in 1989, fewer than 2,000 examples of the 900 Sei had been built; some sources claim no more than 80 of them made it to the U.S. market.” (Motorcycle Classics, May/June 2015).

1983 BENELLI SEI 900
Built June 1982, titled 1983
VIN: ZBNB0AB00DP011261 Engine No: BGB011248

History:

Original owner (name unknown) bought and rode the bike a little over 9000 miles and then parked the bike in his collection. No significant changes were made. In 1987, second owner (Sterling, MA) bought part of the collection including this Sei 900. The second owner was told it did not run so he stored it in a shop intending to restore it, but never rode it. He sold it to me in mid-2014. I cleaned the carbs, etc. and it started!

I did a complete 1 year effort to do a ground up restoration; inspecting and replacing anything needed except one thing: it has the ORIGINAL BODY PAINT!

Mechanically inside this bike looked like new, still crosshatches on cylinders, great compression, good shifting, etc. Fortunately, the tank was very clean. Outside it had some rust on the frame, wheels, and rear drive chain.

Key restoration items include the following:

- Powder coat the frame and wheels
- All new wheel bearings and brake seals/pads
- Replaced the starter gear and shaft and 2 bearings in the transmission
- Honed cylinders and light valve grind
- New seals and gaskets throughout
- New fork tubes and dampers
- Rebuilt carburetors
- 1 new badge (original missing)
- New seat cover, fuel cocks, and rubber parts
- Re-chromed original exhaust system and other chromed parts

Majority of these parts were original Benelli replacement parts bought from Benelli-Bauer GmbH in Germany.

Upgrades not original style parts include:

- New complete electronic ignition system
- New regulator/rectifier system (original alternator like new)
- New rear shocks
- New rear drive chain and sprockets
- New tires and battery
- K & N air cleaners
- Some new stainless steel hardware

It had 9,272 miles on it when I bought it; it has 10,008 miles now.

Runs and rides absolutely GREAT! Starts instantly, although a bit cold blooded (needs a few miles to warm up). Pulls evenly and shifts fine. And yes, it is as smooth as the books and reviews say.

Sure, in comparison to some Japanese, upgraded-spec, chain-saw razor with pipes and slicks, this SEI is a flat dog. If your idea of riding involves pre-mix and a quarter liter of squish band, feel free to look away. But somehow I doubt a true enthusiast can look at this and not be in awe - even a little - at what Benelli has created. Once owned by the legendary DeTomaso namesake, you can be sure that performance (such as it may be defined) exists within. This seller has done a tremendous job on the restoration of this machine, as well as the presentation. There is strong interest in this auction, and I'm sure a new owner will be celebrating the arrival of a dream very soon. If you're into Benelli (or even if you've only just discovered these marvelous machines), act quickly. Very few SEIs came stateside, and very, very few are in this level of condition. Check it out here, and let us know what you think. Viva Italia indeed!

MI

Honda May 22, 2014 posted by

1980 Honda CBX 1000 with just 4400 Miles in Michigan

1980 Honda CBX for sale

Nope that's not a misprint: It is another 4,400 mile original a day after posting an RZ500 with 4,400 miles! No connection between the sellers, but these bikes do share the same fresh from the collection condition. This CBX will likely need tires replaced before any spirited riding is done but otherwise sounds like it's ready to go with very few issues to disclose. One final comparison to yesterday's post is that this one is half the cost (as of current bid) as well, and the reserve is off.

dc

1980 Honda CBX for sale on eBay

AWDWQ

from the seller:

I purchased this bike in 2002 from Chuck Ewing of Whitehouse, Ohio. Those of you that have been into CBX's for a while, probably know Chuck as the primary source for exceptional CBX bikes and parts prior to Tim's becoming the place for these things...The bike was as new in 2002. I rode it only to a few vintage bike events per year in Michigan, hence the very low miles. The bike runs like a clock. A little cold blooded upon start up but that is part of the deal when owning one of these bikes!

Since buying this bike, I have added a complete NOS sport kit. The tank had a flaw in the factory pinstripe so I was able to source a replacement NOS tank a few years ago. ($2,500 for these two items) The paint on every part of this bike is flawless and as new.

This CBX has never been exposed to the elements. It has always been stored in my climate controlled storage. There is no corrosion on any nuts or bolts. The wheels are also in great condition.

The seat, grips, mirrors, electrical, etc, have no flaws. All as new. Please review the pictures closely. The pictures should confirm everything I claim in my description.

Full disclosure...

There is a broken tab on the backside of the LH plastic side cover. Common issue with these bikes. Cover will not fall off but it is loose.
The pipes have absolutely no rust (nowhere, not even in the collector area where these are prone to deteriorate) but there is a 2 - 3" mild scratch on the top of the RH pipe. You need to get pretty close up to see it. Overall chrome is exceptional. No dings or dents.
The tires were replaced in 2002 and may be getting a little hard. I would replace if the bike were to be ridden much.
The alternator cover has developed a streak in the paint finish over the years. Not sure why. Tried to find a NOS replacement but every one I purchased was worse than the one on the bike. Could use a repaint on this item.

This is a very fine example of Honda history and would surely be a nice addition to any collection. Nice 1980 bikes are much more rare than the 79's. And you just cannot beat the black paint and wheels on this beauty.

wadca

$_57

1980 Honda CBX 1000 with just 4400 Miles in Michigan
Benelli May 18, 2013 posted by

Six-Pack: Benelli 750 Sei (Switzerland)

Before Honda's CBX, came Benelli’s first six cylinder production sport naked: the 750 Sei (= Six in Italian). This Italian exotica of the late 70s is powered by a 6 x 125cc cylinders. These are laid in-line one after the other and are fed by 3 x 24mm carburetors. The six chromed exhaust terminals, 3 on each side, are one of the most important styling details of the first “SEI” models.

benelli-750-sei-jg-75-1-serie-veteranenfahrzeug

In addition, the bike introduced a new and fresh style,  with more angular lines than contemporary Italian and Japanese bikes alike. One aesthetic trick is realized for example, by the black diagonal shape around the front part of the other wise round fuel tank, giving the 750 an edgy look.

502120177_2_Big

Most notably though, was the sound of the Benelli. Not as smooth as the CBX, it is a mix of engine burbling, low frequency rough breathing turning into high frequency symphony at the higher rpms. Have a listen to this: (please note that this video is not related to bike on sale, instead it is to make you appreciate how a 750 Sei will please you regardless of performance):

Quite unique, isn't it ?

I also like the color of this pristine sample found in Switzerland. I find the silver lack to match well with the black of some trim parts and the chrome of the mechanical ones. This bike is in perfect shape and well maintained. and for this reason the asking price of about 9500 € is fair.

502120177_3_Big

If interested in owning something that will make casual observers count up o six while looking at those exhaust headers and then wait until you will start the engine for them, click on the link below:

Benelli 750 SEI (low mileage in Switzerland)

Claudio





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