1976 Gold Wing Swamp Thing

Jimbonaut

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So far two pucks came out no problem. I had no idea what they were until one fell out, hit my boot and rolled under a big pile of shit at the back of the garage (always, always happens. Never lands in plain sight - drop something and guaranteed that bastard will disappear Every Time), but now I know. Two came out no problem using some gorilla tape, I'll get to the others later.
 

Jimbonaut

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Is there a go-to place for replacement jets? Everything I read says to keep the OEM brass, but that emulsion tube I photographed is bent and I'm told it needs replacing. Hard to find though...
 

pidjones

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Is there a go-to place for replacement jets? Everything I read says to keep the OEM brass, but that emulsion tube I photographed is bent and I'm told it needs replacing. Hard to find though...
Let me look in my stash. '76, right? The inside of it is also sized to the needle to form the needle jet. I had one very badly worn on my '75 engine. Replaced it with a later year 2-piece and although they say not to do this, it worked real well.
 

Jimbonaut

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Yup, ‘76. With the 5 holes in the tube. Cheers Pid, appreciate the look


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pidjones

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5 down two sides, two at the the bottom 90 degrees from them. Found one that needs a bit of a soak in vinegar (not much) to get the rest of the deposits out of it, but looks good otherwise. I think it was suppksed to be from a '75. PM me an address and I'll post it.
 

Jimbonaut

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5 down two sides, two at the the bottom 90 degrees from them. Found one that needs a bit of a soak in vinegar (not much) to get the rest of the deposits out of it, but looks good otherwise. I think it was suppksed to be from a '75. PM me an address and I'll post it.
It's a Christmas miracle - thanks Pid I really appreciate that. PM'ing you now
 

Jimbonaut

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Slight pivot here. My Böhm Stirling engine needed a bit of an overhaul (loose bearing, sticky pistons, couple of squeaks) so took the thing apart, gave it a bit of an overhaul and fired the thing up...


Off to the races. I love these things, Stirling engines, brilliant. For a time it was hoped (by the inventor, probably) back in the 1880's that these engines would power the Industrial Revolution, then along came steam and put that plan firmly to bed. They work on a principal of heat transfer, a couple of pistons, a crankshaft and flywheels and get up to some serious rpm's with a pretty small heat source. Brilliant little things.
 

Hurco550

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I have always been fascinated by those little Sterling engines. I started several times on building a flame licker from scratch but never finished it. That video makes me want to try again.
 

Jimbonaut

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I have always been fascinated by those little Sterling engines. I started several times on building a flame licker from scratch but never finished it. That video makes me want to try again.

I hope you get to finish it one day Hurco - very cool to build one from scratch, I wouldn’t know where to start. Im hoping to add a flame eater to my collection soon


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Jimbonaut

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Postman showed up in a big way today. Gates timing belts, throttle and clutch cables, battery, oil and air filters, Randakk's carb rebuild kit and doovde, and a bunch of miscellaneous parts too. One of the cats is currently working on chewing through the bubble mailer, and the other is lying in the packing peanuts. Idiots, the pair of them.
 

Jimbonaut

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We went for a New Years walk and saw this -



- good a place as any to start a post on a carburetor rebuild.

I bought Randakk's carb overhaul dvd along with his rebuild kit - pure gold. The guy goes into so much detail and walks you through pretty much every step, from removal to disassembly to back again. And that's a good thing - there's quite a lot going on with these carbs. First off was to check that the serial numbers were all the same, which they were -



- internet tells me these are '76 LTD carbs. Which checks out, as the PO was in the process of turning the bike into a '76 LTD model. Anyone know of any major differences with the LTD carbs, or is it just the trim?

Not suggesting it was the last PO, but someone in the murky past had a very delicate way of remembering which carb part belonged where -



- and it quickly became apparent that his light touch did not end there. Pretty much every jet has been wrestled out with vice grips and a miserable attitude -




- some so much so that I'm just not sure how serviceable they are. The float needle seats are essentially buggered, and three of the four float pivots are either bent or chewed up. One of them was so bad that I had to dremel the thing off with a steel cut-off wheel it was jammed in there so badly, and I didn't want to risk breaking the pivot post itself. Figured finding new pivots (and possible a new float) would be easier than repairing the post itself.



Essentially a similar anatomy to the CV Keihin carbs on the DOHC CB750, but some significant differences too. I don't know if I'm a psychopath or something but I really enjoy working on carbs. These ones too, I just really enjoy the work. I'm not that organized, and my brain isn't exactly formulated to inherently know what to do with the things, I just enjoy the process. These are the numbers/sizes of the jets that came out of the carbs -



Meghan god love her is December last year. Need me a new Old Milwaukee calendar. Anyone got the skinny on whether those sizes are correct? Either way, most of them will need replacing if possible. The air jets are all ok (in terms of usability anyway - no damage) but the main jets are pretty roached. As are a few of the emulsion tubes (bent) but hopefully I can figure out a work around (thanks Pid). The needle seats by the way are a size 1.0 I'll definitely need new ones, they're pretty wretched.

Internals stripped-



With the throttle and choke linkages disconnected (up to a point) I then got the plenum halves separated, but needed to introduce them to an impact driver to make it happen. Could not budge the 5 bolts by hand for love or money. Plenum halves split -



- and carb pairs removed from plenum halves -



As suggested, I did not break the carb pairs into individuals - there's just not much point. I then deviated a little from the video and decided to dump the lot into the old Pinesol spa for a good soak -



and for once managed to get out of the garage without wearing the stuff. I'm like a magnet for Pinesol. Yeah, it's a problem. You can't get the stink out. It hangs around for days.

So that's that for now. Next I'll clean up the jets, seats and tubes as best I can but will need to hunt for some replacements. I want to avoid aftermarket jets as much as possible so if I can find Keihin then great. I think I'll have to stump up for OEM Honda needle seats, and that's if I can find them.

Happy New Year one and all.
 

Maritime

Over 10,000 Posts
Nice work. Ebay may find you good used, ngwclub may find you someone with some they may part with. You don't have any carbs in the parts stash that came with the bike?
 

Jimbonaut

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Sadly not. I did find a spare float pin in a box but that’s it. Had a quick look on eBay and think I’ve found some float seats, hopefully I can find some main jets too and maybe a float and float pin or two.


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Jimbonaut

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I checked the jetsrus.com site and found the main jets I need (I think, need to confirm). It does state however that Keihin no longer make these jets and that the jets they sell are repros). Are they any good? Or is there a better place to buy them?


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Maritime

Over 10,000 Posts
I've had good luck with jetrus product but not sure if they were repros or not though and they were for my other hondas. They were kiehen jets i ordered
 

Maritime

Over 10,000 Posts
Actually I think randak had all thenparts you need. Check there. His stuff should all be oem or better.
 

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