cb 250 n super dream part stem seal

[cmorris0]

ok so after sorting my head and base gasket i need to find the seals for the 2 bolts on the inner most rocker carrier

in the manuel page 116 fig 7.2 number 3.

these are really important and i cant seem to find them anywhere. can anyone help me.

[stinkwheel]

If you can post the picture, someone should be able to tell you what they're called.

Once you know what they're called, your best bet would be to call david silver spares, if they can't get them, you're going to struggle.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[cmorris0]

its just a rubber seal thats on the 2 bolts. i cant get the picture off the site but if you look on https://www.cmsnl.com/honda-cb250nb-1981-england_model15821/partslist/E01.html

and scroll down to 16 and 18. its the little rubber bits off them to bolts.

and also david silver can't get them.

[stinkwheel]

The 10mm sealing washers?

Honda Part number: 90403ML4610 at position 19 on the diagram you linked to?

David silvers have one in stock ready for dispatch. You'd need to give them a call to see if they could get another one in: https://www.davidsilverspares.co.uk/parts/by-part-number/partnumber_12724/

A google for the part numbershows they are also used on the rocker cover of the VT1100. Lings Honda shows a lead time of 3 days @ £3.98 each.

Since it's used on a 1997 bike, I'd expect any honda dealers to be able to get them in if you just ask for the part number. From previous experience, it's probably best to just ask for the part number. If you mention it's for an old superdream they'll just suck their teeth and claim the part is no longer available without even looking.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[cmorris0]

not its not part 19 there the sealing washers its the other ones that are already on the bolt. the rubber sealings not washers.

[stinkwheel]

[Carvel]

Are you on about the rubber inserts that the bolt sits on?

https://i979.photobucket.com/albums/ae271/RxsOllie/SNC00161.jpg

The bit under the washer?

Both of mine leak
____________________
2002 Aprilia RSV1000R, Cbr600Fs, Mk1 B12, Vfr400 NC30...

Matt B: I can deal with crushed nuts to beat Ollie.

[cmorris0]

no its not any of those parts we have come down to the conclusion that the engine is not a 79 model but an 81 and it is part of the bolt.

[Bias69]

the only rubber seals on the Superdream that are anywhere near those bolts are the ones that sit on the outer rear bolts that feed oil to the topend.
Ive got mine in bits at the moment and can only see 2 rubber seals and they are between the barrels and the cylinder head on the rear outer bolts

https://www.cmsnl.com/honda-cb250nb-1981-england_model15821/partslist/E03.html

part number 4 is what I reckon your after.

[cmorris0]

https://www.cmsnl.com/honda-cb250nb-1981-england_model15821/partslist/E01.html

scroll down and hover over part 16

[Bias69]

sorry matey theres nowt like that on mine and never has been.

I cant understand why there would be rubber seals on those bolts cos they go into blind holes in the crankcases so theres nothing to seal.

[cmorris0]

they are an important part of the engine lubrication system

[paddlesat16]

Hi, are they not part of the bolt? Because the manual says "Bolt with rubber seal-2 off"

If your model came with em they should already be there.
____________________
I once saw a bloke shagging a donkey.... in Saudi arabia. Theory Test Passed 26/10/09 Mod 1 Passed 26/4/10, Mod 2 Passed 7/6/10 Current Bikes Suzuki GSX1400 K5, Aprillia Pegaso 650, Suzuki DR350T.

[bigegg]

Had same problem this weekend. After much searching it would appear they are a mod from engine 2200**** onwards. You have to buy the head bolt complete with rubber? sleeve on just above the threaded part of the bolt. Some sites list as not available and some at £12.50 each and I expect plus vat and p and p. Not to impressed at over £50 for the 4.
So I decided to clean the studs up on the wire wheel and fit some very heavy duty heat shrink /wrap that I had courtesy of the electric board. Bit of a fiddle getting back down the tubes / hole in head and barrel as you need a close fit..anyway now done 20 miles and lots of ticking over and no leaks. Hope this helps.................cheers