Topic: intake o-rings

[evinrude7]

where to buy?  common size had at auto parts?

[Ridem32]

I bet a good hardware store can match them up. Try ACE


Sent from my iPhone using Tapatalk

[Stev-o]

I bet a good hardware store can match them up. Try ACE

Why take a chance with some yahoo trying to "match them up"?

Why not just buy the proper, high quality Honda part? To save a buck?

[riverfever]

I agree. While it might work, it would suck to be chasing an issue and then second guessing if what you thought would work is actually working.

[Ridem32]

Not trying to save a buck.  He just ask a question. 


Sent from my iPhone using Tapatalk

[Ridem32]

O ring is either metric or standard.   Honda don't make o rings


Sent from my iPhone using Tapatalk

[Ridem32]

That's a o ring for a 1977 Honda cb400f. Note the Honda part #. The look at the size. Can be bought by size and not Honda part #. 


Sent from my iPhone using Tapatalk

[evinrude7]

well i think my question was fairly straight forward stev-o.  tell me where you got yours.  what size are they and is there a part number?  i ride a 76 750.   

[ekpent]

 Where exactly is the location your wanting to use these o-rings on the 750 intake ?

[BomberMann650]

+1 Local honda dealer might have some on hand.

[evinrude7]

Where exactly is the location your wanting to use these o-rings on the 750 intake ?

after the carb boots. the stub outs on the head. 

[Stev-o]

Where exactly is the location your wanting to use these o-rings on the 750 intake ?

after the carb boots. the stub outs on the head. 

There is no oring there on a 750 [550 has em]

I thought you meant the intake valve tappet cover part # 91302-001-020  $2.42

http://www.partzilla.com/parts/detail/honda/HP-91302-001-020.html

[evinrude7]

Hmm I was under the impression that was a place where vacuum leaks could occur. After the carb holders.

Sent from my LG-D850 using Tapatalk

[flybox1]

Use the fiche, man!      helps everyone know what part we're talkin'bout.
Viton o-rings can be bought cheap at theoringstore.com with the size listed on the fiche, or directly thru a honda dealership if you have the part #

https://www.cmsnl.com/honda-cb750-750-four-1976-cb750k6-usa_model494/partslist/

[Ridem32]

@flybox.  +1   


Sent from my iPhone using Tapatalk

[drumstyx]

I never even managed to get those intake spigots off -- I assumed they were some kind of special case with permanent threadlocker or something. I doubt MRieck removed them when he did my head either. I don't think it's something to worry about.

[evinrude7]

I looked thru that fiche fly. The view is sorta whack with it being at the back of the picture.

Sent from my LG-D850 using Tapatalk

[flybox1]

I looked thru that fiche fly. The view is sorta whack with it being at the back of the picture.

Sent from my LG-D850 using Tapatalk

well...which one was it? 

[Ridem32]

The carb boots clamp to the stub outs on the head no oring.  You can still buy new OEM boots from Davidsilverspares.com


Sent from my iPhone using Tapatalk

[evinrude7]

I was thinking there was an o-ring behind the stub out on the head. 76 750.

Sent from my LG-D850 using Tapatalk

[evinrude7]

Guess not on the 750. The 550 does?

Sent from my LG-D850 using Tapatalk

[flybox1]

Guess not on the 750. The 550 does?

Sent from my LG-D850 using Tapatalk

Yes on the 550.  no on the 750

[evinrude7]

Gotcha.

Sent from my LG-D850 using Tapatalk

[turboed13b]

Harbor freight has every size of oring you will need.

[ekpent]

Harbor freight has every size of oring you will need.

I checked out one of those cheap kits but seem to remember that some specific sizes I needed for a 750 engine were not in the kit. Found a good seller on E-bay and ordered the specific sizes I needed for the engine and carbs. That kit is handy though to have around the shop I'm sure.