85 250r exhaust o-ring

[atc300r]

My 85 250r was missing the exhaust flange sealing ring .Iv looked for them couldnt find anything and silicone only last so long.I was given a stock banshee headpipe last year.I didnt know they used o-rings on them till I was cutting it up to use a section for my 84 200x when I noticed the o-ring.I used the o-ring on my stock 85 flange.I had to pry the headpipe on but it doesnt leak.

[yaegerb]

not a cheap fix by any means and I am sure you already did this, but in case you didn't ESR and Duncan still offer the two o-ring setup. I am migrating to this soon because I am tired of my 3rd gen splooging everywhere :)

Duncan: http://www.duncanracing.com/mm5/merchant.mvc?Screen=PROD&Store_Code=DRI&Product_Code=DR-11100&Category_Code=32

ESR: http://www.eddie-sanders-racing.com/product_p/billet%20exhaust%20flange.htm

[atc300r]

I read over on trx250r site that you can use bdt silicone o-rings on the stock flange.Carlos said to put one in the stock groove and another on the front tapper section.He also said there is a tripple setup .

[badandy]

Soooo, the IPC shows a metal split ring, and, what I just picked up, a dark grey, semi metalic looking o-ring. Cheap Cycle Parts has them in stock. I there is something significantly better.... I would be interested for the future.

[BOB MARLIN]

Stock ones were metal rings. The looked like a piston ring. The aftermarket flanges use O rings. They work better and aren't all that expensive.

[badandy]

Soooo, the IPC shows a metal split ring, and, what I just picked up, a dark grey, semi metalic looking o-ring. Cheap Cycle Parts has them in stock. I there is something significantly better.... I would be interested for the future.

I'll restate this for anybody who cares... See below... there is a seal, metalic and flexible, yet not quite an o-ring as well as a metal split ring (which does look like a piston ring)

7
GASKET, EX. PIPE
18352-HA2-010
$4.33
8
RING, EX.
18358-HA2-000
$8.16
191813

[atc300r]

I put the o-ring where the split ring goes. I broke my oem split ring years ago and I replaced it with a chainsaw piston ring it was the exact same size.That broke when I switched motors a few years ago .When I contacted my local Honda Dealer they said it was discontinued. The banshee o-ring seals realy good. Im thinking of ordering a set of silicone o-rings from Carlos at BTD I think you can get a multiple pack for a good deal.I am going to get some new Banshee o-rings to try on my aircooled 250rs.

[RIDE-RED 250r]

I have an ESR O-ring type flange on one R and a BDT O-ring flange on the other. Both work very well and spooge is minimal at most. Not overly expensive and well worth it IMHO, especially if you are using a nice pipe that you want to stay nice. If your pipe/flange fit is loose it's going to wear on both from the vibration.


But it sounds like your setup is tight from your initial post...

[atc300r]

BDT 4 o-ring flange.for atc/trx 250r and big bore .191882 191883

[badandy]

Spend what you want.. my "o-ring" gasket, cost $4, stock part, new, accompanied by the also stock split ring...

Of course there are options....