SOHC.co.uk Forums > CB750
Vacuum screws
Laverdaroo:
Ffs!🥱
Sent from my iPhone using Tapatalk
McCabe-Thiele (Ted):
Yes Roo. 🏳ï¸🏳ï¸🏳ï¸🥱
AshimotoK0:
I always use this Service Bulletin as a reference for threads Honda used pre and post 1967, as I have early 60's bikes and post '67 ones too.
[ Guests cannot view attachments ] [ Guests cannot view attachments ]
Oddjob:
--- Quote from: Trigger on September 04, 2023, 11:25:06 PM ---
--- Quote from: Laverdaroo on September 02, 2023, 10:08:13 AM ---
--- Quote from: Trigger on August 31, 2023, 05:42:13 PM ---
--- Quote from: Pauarc on August 31, 2023, 04:05:50 PM ---Does anyone know what size the vacuum screw on carb on cb750k are like to change them they are a bit damaged
--- End quote ---
M5 with a 5mm thread ;)
--- End quote ---
Not entirely correct that….
Surely if it’s an M5 bolt, it’s telling you it’s 5mm, the pitch of the thread is what your after in that question in which case it’s only one of two options .08 or .09, that’s all it can be. Not in the workshop so can’t check but if you have a tap and Dye set use your thread gauge and find the matching pitch in that particular screw. Simples
Sent from my iPhone using Tapatalk
--- End quote ---
I would like to remind that only one option for the SOHC bikes which this thread was about and to say that it is one of two options is incorrect ;)
--- End quote ---
No, that's not what you said.
You clearly stated that the standard JIS thread was 0.8, not the modified standard thread, which is 0.8. There are STILL 2 JIS standards, the old and the new, the fact it's a 750 we are talking about is irrelevant. It's very interesting that Honda did take the trouble to clarify the situation even 2 years after changing.
As for the Honda college, you are really trying to say they were discussing JIS over 10 years after changing the standard? Plus back then you'd have needed to be fluent in Japanese to attend and that's a language notoriously difficult to master never mind talking technical Japanese.
Trigger:
The Question was about a sync port screw / vacuum screw so how can that be irrelevant. The member asked a question and i answered it.
Roo contradicted my answer with the wrong information about a M5 pitch screw for a 750 and any other SOHC's.
Ken jumped on the band wagon with his little team to confuse the thread and the correct answer.
They spoke very good English in 1992 in Japan as they do today. And yes they teach you a lot about JIS in the engineering collage and do teach you about changes in Honda parts and engineering practices ;)
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version