Buffet Racer: Propav8r's '78 GL1000

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wannabridin
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Re: Buffet Racer: Propav8r's '78 GL1000

#226

Post by wannabridin »

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Re: Buffet Racer: Propav8r's '78 GL1000

#227

Post by propav8r »

I built a manometer last night...gonna sync the carbs this evening. I need to recheck timing too. It just kinda goes flat around 6500 and has a little misfiring at low RPM. Something's off, but it's been running well enough that I haven't bothered.
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Re: Buffet Racer: Propav8r's '78 GL1000

#228

Post by propav8r »

So I spent yesterday evening syncing carbs...I should've done this a long time ago. No idea why I didn't.

Here's before:

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And after:

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It idles so smoothly now. I also used to have a really annoying dead spot off idle, and when you were riding down the road and rolled on the throttle, you could hear 1 or 2 cylinders hanging low. That's all gone now. Idle is virtually perfect, and throttle response is smooth and linear.
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Re: Buffet Racer: Propav8r's '78 GL1000

#229

Post by warhead_71 »

Built mine the same way after watching some videos on YouTube. And it's actually even more accurate than using gauges... never needs calibrating.
( Other bikes: 76 CB200T | 68 CL350 | 69 CB350 | 76 CB360T | 78 CB400T | 81 CM400 | 79 CB750F | 81 CB650C | 73, 74, 76 CB750K | 83 V45 Magna | 84 V65 Magna )
'78 GL1000 :: EMGO Superbike handlebars, Corbin touring seat, National Cycle F-16 windscreen, EMGO "Roadhawk" wide-mouth 24" megaphones.
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Re: Buffet Racer: Propav8r's '78 GL1000

#230

Post by propav8r »

We probably saw the same video. I didn't do the PVC pipe reservoir/airbreak thing, but its fine without it. I might add some in the future, but it's not a huge priority at the moment. Worked like a champ.
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Re: Buffet Racer: Propav8r's '78 GL1000

#231

Post by desertrefugee »

Dang, that does look accurate. I have a Carbtune that I bought 10 years or so ago and paid about $100 for it (as I recall). In 10 years, I have probably used it a dozen or so times. Not sure that was worth the $100 ... but it does fit into a drawer in the toolbox... :twisted:
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Re: Buffet Racer: Propav8r's '78 GL1000

#232

Post by wannabridin »

amazing how much better the multi carb bikes run when they're all sync'd huh??? so many problems cured by this fix.

nice looking sync gauge! I too have a carbtune, got an incredible deal on it ages ago and it works great, but before that, i used this method, and it worked perfectly!
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Re: Buffet Racer: Propav8r's '78 GL1000

#233

Post by propav8r »

Yeah, the gauge set me back about $25 all in. I cut a recess for those clear tubes on the table saw...I should've used that as an excuse to buy a dado blade.

I'm considering buying a Gunson Colortune too to dial in the mixture.
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Re: Buffet Racer: Propav8r's '78 GL1000

#234

Post by wannabridin »

Nice call. I've always wanted one of those, but haven't had the need to buy one...
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Re: Buffet Racer: Propav8r's '78 GL1000

#235

Post by propav8r »

Out of curiosity, how much mileage do y'all generally get out of a rear tire, something like a Dunlop 404 or Shinko 230?
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Re: Buffet Racer: Propav8r's '78 GL1000

#236

Post by wingrider »

A buddy of mine that is a newer rider got about 4,xxx miles out of a 404...he wasn't riding that aggressive, as he was still new to riding. I do know the pressure was always at 41 psi cold.

This was on an 1100...
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Re: Buffet Racer: Propav8r's '78 GL1000

#237

Post by desertrefugee »

Currently about 4000 miles on a 430. Looks to be, maybe, half gone. '78 GL1
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Re: Buffet Racer: Propav8r's '78 GL1000

#238

Post by propav8r »

Interesting. I'm getting 3500-4000 out of the D404s and S203s I've been running on the back. I do live in the mountains though.

The bike has been running great. It'll weep a little bit of coolant out of the water pump sitting overnight after a ride, but not more than a couple drops. It's not worth taking it off the road quite yet...that'll be a winter project.

More than likely, I'll be pulling the motor back out this winter and investing some genuine effort on a paintjob. I'm not at all happy with the paint finish on the motor, and it really drags the look of the whole bike down.
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Re: Buffet Racer: Propav8r's '78 GL1000

#239

Post by propav8r »

Whelp, as the old-timers told me, it's not a question of if you go down, it's a question of when.

My when was about a week ago. I was leading a (car) cruise of about 30 people on a beautiful backroad out here. I had dusted the cars, and when I got to a straight section, I pulled up to let them catch up.

I was thinking about what was behind me instead of what was in front. I turned sorta side-saddle making sure the whole group was with me, and then gassed it as I turned around forward again.

Big mistake. I was farther along on the straight than I thought, and I had twisted the throttle about 30 yards before a sharp left hander.

I did the thing you're NEVER supposed to do, and fixated on a big gooseneck trailer on the outside of the turn.

Of course, I hit it. I overbraked, skidded, and went off the road. I got lucky enough to go underneath the arch of the goosneck, but the bike went down in the dirt at a fairly slow speed.

I was uninjured (because I was wearing full gear and a full face) and the bike is a little worse for wear.

Bent fork (at least the right, I'm replacing both just to be sure), tweaked wheel, and a little bit of broken fiberglass on the tail. No huge losses, and nothing a couple hundred bucks can't fix.

I rode the bike the rest of the day with a pretty decent wobble, but nothing too terrible. I didn't notice the tweaked fork til I got home.

So I've sourced a set of forks, a '79 Comstar front wheel which is going to powdercoat today, along with a couple other things. I'm still not sure if I need an axle or not. I should check that tonight...I think the triple tree is okay. I checked it with a straightedge and everything still looks lined up.
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Re: Buffet Racer: Propav8r's '78 GL1000

#240

Post by Easter »

Glad it wasn't worse.
Bikes at present:

83 XL 600r with a 2004 XR650L engine
And a slightly worse for the wear BMW GS adventure bike awaiting repair
83 GL in process :IDTS:
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