SOHC.co.uk Forums > CB350/400

Leaking Carbs after rebuild - T-Piece O-Rings? (Resolved)

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ManicGTI:
Having faffed around with my carbs a few times in the last year, I've ended up rebuilding with all new O-Rings, Jets, needles, float valves etc and it appears I have eliminated the 'overflow' leaks...

However, I hooked up the tank to them yesterday and I'm still getting a leak.  It appears to be central, and mainly coming from the central fuel supply T-piece.

Is there any particular technique/trick to sealing these up?  As a first pass I'm going to separate the carbs and try a bit of Silicone Grease.

Thanks,

David

hairygit:
If you're taking them apart anyway, renew the "O" rings on the T pieces (4 on each, so you'll need 8) as that will almost certainly be a better and more reliable fix than grease or sealants. I'm sure Bryan J will be able to tell you what size they are.

Sent from my X5 using Tapatalk

AshimotoK0:
Not listed separately in my 400/4 or 350 four parts lists only as part of a kit.

If they are the same size as the 750 the size is 7.8 x 1.9 mm pn 16173-044-004 . This was from the 750 4/69 sandcast parts list .. one of the only Honda ones to list all individual  'o' ring sizes

I got mine from Yamiya (sold out at the 'mo though)

http://www.yamiya750.com/index.php?main_page=product_info&cPath=246_21_181_143&products_id=1419

http://www.yamiya750.com/index.php?main_page=product_info&cPath=179_273_207_214&products_id=2865

tom400f:
Hi Dave

You could try asking this guy: http://www.ebay.co.uk/usr/gerben1956

I think Trigger put me on to him.

Chris400F:
I recall member andut on here had a T-piece and connecting pipes from me early last year from some parts I had.
I don't know whether he fitted new O rings or just used the ones that were fitted. Maybe he can remember.

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