Gs1000 Bonneville Bike

[limeex2]

I believe they made 1980 GS1100"s? Coulda swore they had 2 and 4 valve 1100's in 1980

[RichDesmond]

I believe they made 1980 GS1100"s? Coulda swore they had 2 and 4 valve 1100's in 1980

If memory serves, they made a 4-valve 1100 (the square headlight ones) and the 2-valve 1000. At some point the 2-valve went to 1100 for the shaft drive models, but I don't remember exactly what year. Might have been '80, might have been a year or two later.

[limeex2]

If a 1980 4 valve was made, to get the HP numbers your looking for would be achievable. So would the speeds.

[stevef.]

Update: we are still in search of a bike for this. we will be going to look at one tomorrow, but finding '80 or '81 GS1100's has not been easy. Hopefully we will have fortune on our side and take a bike home this week!

[bobgroger]

In 1980 the GS1100L was 16 valve and chain drive. Just the L.

[maicojoe]

Hi Steve, try calling this guy, he may have what you need. About 4-5 months back I talked with the seller at length, seems like a pretty decent bike. Should do an easy 140mph as is, just gear it up, proper salt tires pumped way up, and a steering stabilizer. I don't think you would need any fairing at all. Just find a 105 pound 4' 11" pilot, and away you go.

https://blacksburg.craigslist.org/mcy/d/1981-suzuki-gs1100/6331775887.html

1981 Suzuki GS1100EX. 38,750 original miles. Complete engine rebuild done at 37,775 miles, details are below. It has a brand new Michelin front tire. Rear tire is also a Michelin with less than 1000 miles on it. This vintage bike is in superb condition. I have owned this motorcycle for 27 years. Always garage kept and covered. Meticulously maintained and cleaned. This bike has always been a local bike since new. It has never been raced. It has genuine Suzuki European spec gauges that read up to 140 mph. Below are all the details and upgrades.

If my ad is still up it means that the bike is still for sale, no need to ask that. I will promptly remove my ad when the bike is sold.

Price is firm at $3200.

The reason that I am selling is that I just have other interests now. I rarely have the chance to ride.

Complete engine rebuild at 37,775 miles
-Bored to 1168CC with Wiseco piston set
-Welded crankshaft
-GS1150 cams and valves
-Ported and polished head
-new valve seals and springs
-undercut transmission
-new plugs and regulator rectifier
-all machining done by Cooper Performance www.cooperperformance.com

Other details
-Mikuni 33mm smoothbore carbs with individual pod filters
-Michelin Pilot front and rear tires
-Progressive springs in front fork tubes
-83 GS1100 rear shocks with adjustable damping
-New style sealed battery bought less than 1 year old
-MSD box with Dyna ignition
-Accel coils and spark plug wires
-Heavy duty clutch basket with red springs
-Polished swingarm foot pegs and engine cases
-Frame was professionally painted while engine was out for rebuild
-indoor cover is also included in sale
-Murray X-style header (very rare)

For an extra $100, I will throw in the items below
-Yuasa trickle charger, Suzuki factory tool kit, Clymer service manual, Suzuki valve adjustment tool, Center stand, Brand new valve cover gasket, Brand new carb bowl gaskets, many spare hardware parts.

[dorkburger]

I thought that looked familiar.....

http://www.thegsresources.com/_forum/showthread.php?246211-1981-GS1100EX-The-one-that-you-ve-been-looking-for

Good luck with the Bonneville build. Looking forward to it.

[stevef.]

Oh that's a sweet bike in Virginia! I'll have to talk to my buddy on this one and see if we think it's worthwhile for us to cruise out there and get it. We'd probably put the money in for hotter cams and maybe also bigger carbs. Unfortunately, we do want to actually do the riding, so we'll need some extra power. Me being 6ft and 210lbs and my buddy being 5'9" and 155lbs.

Thanks for pointing that out!

[stevef.]

Has anyone here been on the salt with their bike? What do you know about tire choice? I'm reading that having something very resistant to heat and abrasion is a must, but I am unable to find one place where a specific tire is referenced.

-Len

[stevef.]

IMG_3948.jpg Alright, we got a bike!! Now to make a list of everything we need and get started with inspection and tear-down.

[maicojoe]

Did you buy the Virginia bike?

[dorkburger]

Cool.... Fyi, it looks to have an '82 front end with the anti dive forks....

[gsrick]

I just sent PauL Servino a link to this thread, he may have a bike for you in Maryland.

[stevef.]

Did you buy the Virginia bike?

No, we did not. That bike is really nice, but ultimately I think we may want to work the head a little more with larger cams and aftermarket valves, making the whole purpose of buying pretty moot. Especially if we factor in the 1300 mile round trip to get the bike.

Cool.... Fyi, it looks to have an '82 front end with the anti dive forks....

You are correct, sir. The headlight, fender, and anti-dive forks all appear to be 1982 stuff. This is actually a bit of a franken-bike. It seems as though somebody along the line had an '80 or '81 GS1100 that was crashed and needed a new frame and front end. The frame is a 750. But the bodywork and seat say '80-'81 1100 to me. Also, we will be contacting the tech people to get a solid answer concerning exactly what documents would make them comfortable with the engine being fair game as it was originally designed and produced prior to '81. If it seems we cannot use this one, then we got it cheap enough that we could get back out what we put in.

[rapidray]

PM replied to. Call me when you can.
Ray.