'78 GS1000E Up and running, Almost ready for paint.

[Guest]

I want to thank everyone for their help. I have gotten a real good start on my bike because of this site and helpful members. It finally runs as it should. There is still a lot of work to go. Brakes and master cylinders have been rebuilt, brake lines replaced with Russel street legal lines and fittings, switching to dot 5 brake fluid. EBC pads in front and Ferodo pads in the rear. All cables including speedometer and tach. have been replaced. Coils, wires, plugs and boots, were replaced, and a Dyna S ignition installed. New Metzler tires. The front fork seals have been replaced and Progressive springs installed. Front lowers polished. I replaced the tank with a NOS '80 tank and petcock (not in love with the petcock, but it works). The bike had a Vance and Hines 4 into 1 exhaust and I got K & N pods. I had tried my hand at rebuilding the Carbs with the help of a Harley mechanic friend of mine. I think the old tank played a good part in ruining that job, so I had a set built for me by WiredGeorge. I can hear the comments now, but he did a superb job. On our long ride today, with two new Harleys and my '78 GS1000E, the GS turned in 52.30 miles per gallon. The ride started out with my buddies trying to prove they could lose a GS. That didn't happen (Thank you Wired George!), so this was by no means an economy run. They gave up soon when they learned it was going to be the other way around if they didn't let off. One observation on the Progressive springs and air pressure. there was a little bit of rapid bounce from the front tire that was really irritating. At first I thought it was a poor balancing job, but 5 lbs. pressure in the forks smoothed it right out without any feeling of stiffening up the front end. I would definitely say that no air is wrong, and these front ends were designed to work with some air assist. Thanks again for the help, I'm sure this is just the beginning of my questions. I need to figure out a paint scheme next. I was thinking deep burgundy, but I'm becoming fond of the silver tank and black side covers and rear. Any suggestions would be appreciated.

 

[terrylee]

How about some pics.? terrylee

 

[Big T]

Dark red metallic was one of the colors in 78 for the wire wheel bikes

 

[850 Combat]

Every fork has air springs. There is always less air volume in the fork when the fork is compressed, which compresses the air even if the static pressure is zero. Raise or lower your fork oil level a little, and you will change the rate that the air pressure rises in your (any) fork. I tend to like a little higher than stock oil level in the fork.

My '78 also has an '80 tank and so-called petcock.



It is surprizing that your riding buddies expected to have performance over your bike in any area. Some of those riders seem to live in a bubble where they all believe the same improbable thing.

 

[tkent02]

On our long ride today, with two new Harleys and my '78 GS1000E, the GS turned in 52.30 miles per gallon. The ride started out with my buddies trying to prove they could lose a GS. That didn't happen (Thank you Wired George!), so this was by no means an economy run. They gave up soon when they learned it was going to be the other way around if they didn't let off.

Why are they all so clueless?
Every Jap bike over 250ccs for the last forty years has been faster, you'd think they would know this by now.
Oh, well. entertainment for us.
Congrats.

 

[Guest]

Here are a few quick pictures before I head out to work. http://picasaweb.google.com/lh/phot...authkey=Gv1sRgCKTzwsyJve6w9gE&feat=directlink http://picasaweb.google.com/lh/phot...authkey=Gv1sRgCKTzwsyJve6w9gE&feat=directlink

 

[terrylee]

Man, I thought I was getting my bike to look good, but I have a long way to go! Now I have to polish my forks! terrylee

 

[Guest]

The polishing is really easy. Start with 230 grit sandpaper for deep scratches casting marks and casting imperfections. switch to 320, 400, 600 and then Brasso. At this point they will almost be finished. A good run through a polishing wheel that has only been used with compound for soft metals, and there you have it. You can use a drill motor clamped down to a bench. I got two Ryobi polishing wheels and the compound for soft metals, and plastics in the tools section of Home Depot. I spent less than an hour on my Plexifairing that hit the gravel when my front brakes locked coming off the roadway to my driveway. Used 320, 400, 600, and the plastic compound on the wheel. You can't tell it was ever damaged. I learned a lot about the master cylinder after that one.

 

[850 Combat]

Why are they all so clueless?
Every Jap bike over 250ccs for the last forty years has been faster, you'd think they would know this by now.
Oh, well. entertainment for us.
Congrats.

Thats not really true. In the early 70's a Sportster was as quick as most Japanese 750's. I've got some data in my "Albums". Giant killers like RD350's, which didn't come out until 1973 anyway, were only mid 14 second bikes. Sportsters were low to mid 13 second.

 

[Guest]

How do you ever get out of the house in the morning with all those bikes to choose from, or do you just do a daily rotation?

 

[ramrod400]

I know the harley guys like to point out every thing they think is better than a rice burner, they better just stick with the made in usa theme,My buddy who just got his first harley talks about milage he get with fuel injection and his big 1600 cc motor blah blah blah can not for the life of me to get him to run the 28 year old rice burner??? and old vet the bike looks great

 

[Guest]

Thanks ramrod. It has a long way to go, but it's a good start. The motor was not well maintained when I got it. It was full of sludge. I've been cleaning it up as well as I can without tearing it down at this point. I have a crated stock motor that was supposedly built and balanced for a Bonneville Salt Flats run, that I will be checking out shortly. If it is anything close to what it is supposed to be, it will be going on this bike. Considering this motor is turning out 52 MPG with bolt on carburetors from George wiredgeorge Lesho, the crated motor should be really nice if it's anything close to what it is supposed to be. I really should adjust the valves on this motor very soon, like maybe this weekend. One of my Harley buddies has a full factory set of shims, plus four GS's in his basement under various stages of construction at the moment, so I have very little excuse not to.

 

[Big T]

How do you ever get out of the house in the morning with all those bikes to choose from, or do you just do a daily rotation?

The funny thing is, his bikes are in 3 states and he's in a 4th.

 

[KEITH KRAUSE]

52 MPG with pods/pipe? Must have been going slow for the most part and zero stops/elevation.
Most likely riding on the jet needle on most trips. 52 MPG would suggest she's lean. Something closer to 42 would be about right.

 

[Guest]

No, the carbs were built to be a little on the rich side. Last night when I filled up I got a little over 50 MPG. I have been commuting to work, mostly freeway riding with a mix of stop and go in town. I have been launching off the ramps onto the highway. I don't drive particularly slow, but besides the ramps that are close to red line through the gears I'm usually riding mid range.

 

[KEITH KRAUSE]

Ok. That's great. But I've never seen a properly re-jetted 1000 with your mods get that much mileage. It just doesn't happen. Mine is jetted well and gets low 40's if not much stop and go is involved. Around 36 if all city. Also, the typical 1000 speedo is off some. Many 5% or more optimistic. This can easily add 2 MPG by itself. No way it's "jetted on the rich side".
A stock 1000 would be hard to get 52 out of. You'd need perfect mileage conditions if possible. Re-jetting takes more fuel.
I always comment when I see something that I know isn't right. It's not meant as an argument. Just based on a lot of experience with your model.

 

[tkent02]

A stock 1000 would be hard to get 52 out of. You'd need perfect mileage conditions if possible. Re-jetting takes more fuel.

Normally I would agree with you, but I have seen a few bikes and cars here and there which get much better mileage than other identical ones, maybe the one in a thousand off the assembly line that has every single detail perfect, every adjustment happens to be spot on.
I agree it's much more likely to be a huge odometer error but it is possible.

I rode a later 750E with a punched out 1100 engine a few months ago, when we filled up it was something like 52 or 55 mpg. The owner says he usually does about the same. Had a four into one pipe, carbs from a GSXR or Bandit or something. Very well tuned bike, very fast. My stock 1100E was not in the same ballpark, for either power or mileage.

 

[tlg1100]

Went 74 miles on my 81 1100 that needs alot of work and used 1 and a half gallons so I was shock it got that good of milage????Oh and a half quart of oil

 

[KEITH KRAUSE]

I rode a later 750E with a punched out 1100 engine a few months ago, when we filled up it was something like 52 or 55 mpg. The owner says he usually does about the same. Had a four into one pipe, carbs from a GSXR or Bandit or something. Very well tuned bike, very fast. My stock 1100E was not in the same ballpark, for either power or mileage.

OK Kent. Like I said, I'm just commenting that I think his jetting is lean, at least on the needle. I'm not talking about some exception to the rule, just based on my experience with these models. If he's lean or rich that's up to him to verify. I've also read about/communicated with the guy he had jet his carbs and I know he's made adjustments that are proven too lean.
As for your 1100 and how it compared mileage wise with the punched out 1100, how do you explain him getting better mileage than you, if in fact both bikes are jetted properly? I mean, how can a modded 1100 achieve better mileage than your stocker? Maybe some higher gearing would help things somewhat but I don't see it myself. Intake/exhaust mods, properly jetted for, use more fuel and that's the way it is.

 

[Guest]

Keith, I really don't enough about the carburetors to comment on anything but what I can see and measure. I had these carbs built by George Lesho, and part of his comment on his setup was to keep an eye on the plugs because they might be a little on the rich side where the normal VM26 on the GS1000 is on the lean side. My speedometer matches the town 25MPH radar signs, if that means anything, and the plugs look just about perfect, but I can have a second opinion on that, several of my friends are mechanics. this motor as I had said before was not well maintained, and it is using quite a bit of oil recently. It overheated badly the other night going up the mountain in a traffic jam before I could find a place to pull off. The motor is likely to be changed very soon, I have two others that should be in very good shape, and may only need valve seals.