Will '79 carbs work on my '76?


Information and questions on GL1000 Goldwings (1975-1979)
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1grouch2u
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Will '79 carbs work on my '76?

Postby 1grouch2u » Wed Apr 04, 2012 9:12 pm



There's a set of used carbs off of a '79 GL1000 I'm thinking about buying to replace the thoroughly jacked up set on my '76 and I need to know if they'll interchange(?) Can anybody tell me if this will work, and what changes I'd have to make? Any information would be greatly appreciated!



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detdrbuzzard
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Re: Will '79 carbs work on my '76?

Postby detdrbuzzard » Thu Apr 05, 2012 7:02 am

yes the carbs from the '79 will work on your '76
'99 ST1100, '93 se
'75 cb750k, '79 cb 750f, '79 cb750 superK
cb 450sc, sunL70
'06 st1300a
.... william

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1grouch2u
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Re: Will '79 carbs work on my '76?

Postby 1grouch2u » Thu Apr 05, 2012 12:23 pm

detdrbuzzard wrote:yes the carbs from the '79 will work on your '76


Okay cool! ~Thanks! :D

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scotterichmond
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Re: Will '79 carbs work on my '76?

Postby scotterichmond » Thu Apr 05, 2012 2:00 pm

They will function, but the performance will be slightly changed, they are 1 mm smaller.

year 75 76std 76ltd77 78 79 80 81
Carburetion (2) 36mm CV ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
Carburetion (4) 30mm CV ---- ---- ---- ---- ---- ---- Yes Yes Yes Yes Yes Yes
Carburetion (4) 31mm CV ---- ---- ---- Yes Yes Yes ---- ---- ---- ---- ---- ----
Carburetion (4) 32mm CV Yes Yes Yes ---- ---- ----

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1grouch2u
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Re: Will '79 carbs work on my '76?

Postby 1grouch2u » Thu Apr 05, 2012 2:43 pm

Crud~! -I didn't win the auction- was down at the DMV getting plates on the VW and somebody bid $1 more (my first bid was $60.00 and somebody won it for $61.00) What awful luck. :cry:

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dingdong
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Re: Will '79 carbs work on my '76?

Postby dingdong » Fri Apr 06, 2012 6:36 am

Actually you are lucky in not getting them. They will work but not very well. Try to get a set for the year of your bike. It will run much better.
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

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Fred Camper
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Re: Will '79 carbs work on my '76?

Postby Fred Camper » Fri Apr 06, 2012 7:20 am

The carbs need to match the cams for best performance. So I agree not getting them is okay. A rebuild kit is $200 ish and $261 for carbs that are not what you want is way too much. Bet you can find a good deal on '75 or '76 carbs as these bikes are not rare.

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1grouch2u
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Re: Will '79 carbs work on my '76?

Postby 1grouch2u » Sat Apr 07, 2012 2:49 am

Yeah I need to get a Randakk kit and a float-pivot-post repair kit then I'll be back in tall cotton I suppose. I rode it to dialysis today and when I got home pulled the spark plugs and there's 2 that are too lean but they're all hitting and not sooting up anymore so I guess I'm good for now. If I'd get the right plenum o-ring and the 4 where fuel goes to each carb I think that would straighten out most of that. Thanks guys for all your help.

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keddano
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Re: Will '79 carbs work on my '76?

Postby keddano » Sat Apr 14, 2012 12:15 am

Here's some good reading, about mixing carbs between the early years('75,76'77 and late emission carbs) from Randakk's Site.
http://www.randakks.com/TechTip32.htm

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1grouch2u
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Re: Will '79 carbs work on my '76?

Postby 1grouch2u » Sat Apr 14, 2012 3:10 pm

keddano wrote:Here's some good reading, about mixing carbs between the early years('75,76'77 and late emission carbs) from Randakk's Site.
http://www.randakks.com/TechTip32.htm


Yeah I have been researching these matters, and had they been the '75 carbs that would have been reason perhaps to be bummed out- it seems the pistons on the "75's were arc'ed at the bottoms for maximum flow- but the '79 carbs were emission tuned and although probably would have worked better than what I have on there (in bad need of a rebuild) they certainly would not have been my best go.

I've been all over this po-dunk town looking for metric o-rings, and while I did find some for the float-seat-valve in some assortments on the 'Help!" isle, it would have required 2 packages- at $7.00 a pack- whereas if I'm patient I can get o-rings for the seats, both jets, and the idle jets - all for $20.40 including shipping, in Viton- but I'll have to wait however long it will take them to get here after being shipped at the earliest this Tuesday.

-On a different but related note: For the stripped out bowl screws I discovered that #8-32 x 5/8" (with a split-type lock washer) make the ideal replacement/repair for the stripped out ones. I chose socket-head (allen head) black anodized screws with stainless split-washers, and purchased the correct drill and tap- although if you're careful it would seem that oner might actually just go back with the larger screw making it's own threads- although with the tap the holes are just sooo purty! (and hold wonderfully strong!)

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Fred Camper
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Re: Will '79 carbs work on my '76?

Postby Fred Camper » Sat Apr 14, 2012 7:11 pm

You did the right thing by avoiding the drill and just running the tap in. Good to here that is working out. Float height is a big deal and techincal to check so be careful with that.




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