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Author Topic: 1982 CB750F... The resto-not  (Read 4221 times)

Offline The Jimbonaut

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Re: 1982 CB750F Resto-mod. At least that's the current plan.
« Reply #10 on: Jul 27, 2018, 12:02:20 »
Absolutely - hoping to tear into it this weekend so I'll post up some pics.  If they work for you mate they're yours for an al pastor and cerveza next time I'm in Texas =)
"I'm telling you Donnie, nuthin' but nuthin' but right"

Offline advCo

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Re: 1982 CB750F Resto-mod. At least that's the current plan.
« Reply #11 on: Jul 27, 2018, 12:57:49 »
Absolutely - hoping to tear into it this weekend so I'll post up some pics.  If they work for you mate they're yours for an al pastor and cerveza next time I'm in Texas =)

Well that I can gladly oblige
"He broke the mirrors off his Cadillac, 'cause he doesn't like it looking like he looks back."

74 CB360 - Luna - http://www.dotheton.com/forum/index.php?topic=63294.0 - Sold
82 GS550L - Tracker-ish - http://www.dotheton.com/forum/index.php?topic=67229.0 - Sold
74 XL350 - The Turd - http://www.dotheton.com/forum/index.php?topic=70252.0 - Sold
Suzuki FA50 "No-Ped" - http://www.dotheton.com/forum/index.php?topic=71189.0
73 Suzuki RV125 -http://www.dotheton.com/forum/index.php?topic=73875.0
'97 BMW F650st - http://www.dotheton.com/forum/index.php?topic=75732.0

Offline The Jimbonaut

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Re: 1982 CB750F Resto-mod. At least that's the current plan.
« Reply #12 on: Jul 30, 2018, 13:31:30 »
Ok, pitter patter let's get at 'er.

The bike's a non-runner so the plan is to pull and clean the carbs (a once-over at this point), switch out the tank with my other CB750, sling in some new spark plugs and see if I can get her started.  Before doing that I pulled the timing cover, got a 17mm socket on the crank bolt and turned it counter-clockwise - all the pistons are moving freely so they're not seized and that's good.

Cleared the way to the engine by removing the floorboards/forward controls/crash bars and pulled the carbs.  Here's the now-ubiquitous carb hero shot -
 


Getting into them it was clear that this bike has sat for a very long time.  The varnish was thick, black and everywhere.  Most of the main jets were completely blocked and this vacuum slide was completely seized -



- a few love-taps with a rubber mallet got it freed it but boy was it a mess in there.  Cleaned it up with some eau du carb cleaner and a rub with some 2000 grit sandpaper - now all four slides are moving as they should.  The carbs were disassembled to the point where I could blow carb cleaner though most of the ports, but I'll wait until the bike's running before completely disassembling the rack and getting all Pinesol on their grubby ass.  For now I just want to get the thing breathing smoke.

The choke butterfly's are in horrendous shape -



- how in the world do these things rust?  Am I right in thinking these are for the bin, or can I clean them up to the point where they're salvageable?  The things look like Faces of the Damned - each portraying its own sentiment of anguish and despair.  Frightening.

This pockmarked monstrosity is the tank-shaped rust bucket that's soon for the dump -



- sitting alongside is Rhonda's tank that'll be the stand in while I try to get it fired up.  I'm also going to re-clear Rhonda's tank but that's for another thread.  Here's the state of the workbench as of Saturday -



and here's the bike -



Hoping to get the carbs rebuilt and back in the bike, sling the tank on and see what gives.  Here in Quebec any bike that's been off the road for more than a year has to go through a safety inspection - before I start chopping into this one I'm going to get it through that inspection first.

Pretty sure I'm going to call this bike The Upsetter.  For reasons that may or may not become clear.
« Last Edit: Jul 30, 2018, 13:35:48 by The Jimbonaut »
"I'm telling you Donnie, nuthin' but nuthin' but right"

Offline The Jimbonaut

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Re: 1982 CB750F Resto-mod. At least that's the current plan.
« Reply #13 on: Jul 30, 2018, 14:14:58 »
I'll get some photos up as well of all the gubbinery that I pull off the bike and won't need (crash bars, front fairing, forward controls, boards, rear scaffolding/bags etc) and most of which I'll give away to whoever can make use of it.  Advco's got dibs on the rear end stuff but anything else is up for grabs.  Should note that I'm in Montreal so bear in mind the shipping but other than that it's all yours.

I'm on the look out for some footpegs and levers - if anyone has any or could point me in the right direction that would be terrific.
"I'm telling you Donnie, nuthin' but nuthin' but right"

Offline Maritime

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Re: 1982 CB750F Resto-mod. At least that's the current plan.
« Reply #14 on: Jul 30, 2018, 15:38:16 »
Jim once you know what you're sending Nick, it may work best for you and him if you bus it to me and I drive over to Maine and send it to TX. We can look at that when the time comes.
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Offline The Jimbonaut

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Re: 1982 CB750F Resto-mod. At least that's the current plan.
« Reply #15 on: Jul 30, 2018, 15:52:25 »
Jim once you know what you're sending Nick, it may work best for you and him if you bus it to me and I drive over to Maine and send it to TX. We can look at that when the time comes.

Mike Maritime - cementing his Legend status one post at a time  8)

Good man, can't thank you enough.  Unless several beers next time you're in town work in which case I totally can  ;D
"I'm telling you Donnie, nuthin' but nuthin' but right"

Offline Maritime

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Re: 1982 CB750F Resto-mod. At least that's the current plan.
« Reply #16 on: Jul 30, 2018, 16:00:18 »
Ha, sure that sounds good.
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Offline advCo

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Re: 1982 CB750F Resto-mod. At least that's the current plan.
« Reply #17 on: Jul 30, 2018, 16:01:04 »
Wow that tank was pretty rough, eh? looks like its got the chicken pox.

Appreciate the help if those racks work out, Mike.
"He broke the mirrors off his Cadillac, 'cause he doesn't like it looking like he looks back."

74 CB360 - Luna - http://www.dotheton.com/forum/index.php?topic=63294.0 - Sold
82 GS550L - Tracker-ish - http://www.dotheton.com/forum/index.php?topic=67229.0 - Sold
74 XL350 - The Turd - http://www.dotheton.com/forum/index.php?topic=70252.0 - Sold
Suzuki FA50 "No-Ped" - http://www.dotheton.com/forum/index.php?topic=71189.0
73 Suzuki RV125 -http://www.dotheton.com/forum/index.php?topic=73875.0
'97 BMW F650st - http://www.dotheton.com/forum/index.php?topic=75732.0

Offline Maritime

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Re: 1982 CB750F Resto-mod. At least that's the current plan.
« Reply #18 on: Jul 30, 2018, 16:11:08 »
Could save you $20 or more depending on size of box. I'd hate for UPS or Canada Post to get that extra LOL.
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Offline The Jimbonaut

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1982 CB750F Resto-mod. At least that's the current plan.
« Reply #19 on: Jul 30, 2018, 23:36:26 »
Drained some of the oil, wasn't milky or weird smelling and tried setting setting it on fire but didn't light so pretty sure there's no gas in there.  Rebuilt the carbs, jammed them back in the bike and hooked up Rhonda's tank as a stand-in.  Don't mind the enormous fairing up front, slung that on for shits and giggles...



Getting a non-runner to start for the first time is a feeling like no other.  Love it.  Took a while to fire, but that's because (I think) of the empty float bowls and vacuum petcock set-up.  You may be able to see the can sitting on the frame - that's Honda carb/combustion chamber cleaner and it's good stuff.  Much thicker than regular carb cleaner which - for whatever reason - works really well (guess it sticks around longer, burns slower?).  Either way, with the airbox not connected to the carbs and a good 5-10 seconds of that stuff sprayed into the carb body and it's off to the races.

The bike sounds pretty damn good too, no weird rattles, clanks or leaks yet.  Did see that one of the spark plug threads is cross-threaded so I guess I'm going to have to pull the head and re-tap it or get a TimeSert in there .  Other than that, so far, so good.  Will check compression tomorrow, but all four pipes were nice and hot (ie totally burnt myself on all of them) - including the cylinder with the cross-threaded spark plug.

Included in the vid is a close up of the air filter housing.  Me and my wife have a jewelry business - if I find a skull in amongst the rats nest in there I'm casting it in bronze and it's going on this bike.

Sweet.  So now that I know it runs I'm gonna do the basics on her to the point where she'll pass her safety inspection, then bring her home and get the grinders out.  Good people - onwards  8)
« Last Edit: Jul 31, 2018, 02:06:21 by The Jimbonaut »
"I'm telling you Donnie, nuthin' but nuthin' but right"