changing jet from #35 to 38???


Information and questions on GL1200 Goldwings (1984-1987)
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gervais
Posts: 39
Joined: Tue Oct 24, 2017 6:49 am
Location: riviere-bleue,quebec,canda
Motorcycle: GoldWing 1984 GL1200A Aspencade

changing jet from #35 to 38???

Post by gervais » Tue Nov 07, 2017 4:58 pm



hi
i read some comments about changing jets #35 to 38 and #108 to #150 for my 1984,,is it true?
should i do it during the time my carbs need to be cleaned?

thanks for the advice,some are talking about a "driveability" need !!!

gervais



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ziesenis
Posts: 9
Joined: Wed Apr 15, 2015 9:29 pm
Location: Pittsburg, Ks USA
Motorcycle: 1986 GL1200 Interstate w/Voyager trike kit

Re: changing jet from #35 to 38???

Post by ziesenis » Tue Nov 07, 2017 6:43 pm

We change the slow jets #35 to #40 (or you can drill out the #35 using a #77 drill bit) and use either a #105 or #108 to fix the slow speed hesitation. Honda's service bulletin also changed the needles and slide springs ( we don't ) and they run great. Just make sure you get all the little passage ways cleaned. :mrgreen:

gervais
Posts: 39
Joined: Tue Oct 24, 2017 6:49 am
Location: riviere-bleue,quebec,canda
Motorcycle: GoldWing 1984 GL1200A Aspencade

Re: changing jet from #35 to 38???

Post by gervais » Wed Nov 08, 2017 12:40 pm

you know what:
i called the dealer and he cannot help me at all,,,the bike is too old he said and the guy who used too worked on them is,,,,,,gone so no support for GW.

i found this in a matual from Europe:

The Honda factory has determined that low-speed
driveability (hesitation under light acceleration at
approximately 2,000-3,000 rpm) can be improved on the
following models:
a. 1984 GL1200 Interstate and Aspencade (49-state
models): engine serial numbers 2400107-2423769
(Honda Service Bulletin GL1200 No. 10 June 1985).
b. 1985 GL1200 Interstate and Aspencade (Calif,
models): all models as applicable (Honda Service
Bulletin GL1200 No. 10 June 1985).
c. 1985 GL1200 Interstate and Aspencade (49-state
models): engine serial numbers 2500001-2509296
(Honda Service Bulletin No. 9 June 1985).
If your Gold Wing falls into this area, take your bike to
a Honda dealer and have this modification performed. This
procedure requires that the carburetor assembly be
removed, partially disassembled and new parts (slow jets,
jet needles and diaphragm springs on some models) be
installed. The carburetors must then be synchronized and
an idle drop mixture procedure performed.


i cannot find ANYWHERE these parts numbers from Honda for the needle and the spring!!!!

my serial number of my engine is in the list to be modified too.

i am trying from Honda website too have some help,,
i am living in a rural zone and not much support except from you guys here

thanks
Gef

User avatar
ziesenis
Posts: 9
Joined: Wed Apr 15, 2015 9:29 pm
Location: Pittsburg, Ks USA
Motorcycle: 1986 GL1200 Interstate w/Voyager trike kit

Re: changing jet from #35 to 38???

Post by ziesenis » Wed Nov 08, 2017 1:37 pm

Yes this is what I was telling you about. We have figured out that you can fix it by just drilling out the slow speed jets with a #77 drill bit and it will run great. Or you can replace the#35's with #40 jets. Cheaper to drill out. You don't need to do anything else. We've done it on 9 or 10 bikes so far and they all have worked great.
:mrgreen:



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