Does anyone know if Dog Fight expansion chambers are made to be used without the crush washers? They have o-rings and seem to fit better without crush washers?

Thanks.
_________________
MC21R9N track
MC18R2J track
CBR954
CR250

mine just use the o rings in the exhaust chamber and they never blew or leaked from where they joined
_________________
ive seen more tarts than mr kipling

If the dog Fight exhaust uses a manifold that the actual chambers slip onto (and that part has an O-ring where the manifold/chamber slip together) then you want to have some form of seal between the manifold and the cylinder/exhaust port. The stock cylinders do not have a smooth surface for matting a manifold to, so you need either the big cooper crush washer/fitting or some other form of seal (never seen any other seal system for this).

Without a seal, you will get leaks from that attachment point.

silikesguiness wrote:
mine just use the o rings in the exhaust chamber and they never blew or leaked from where they joined

The engine has to run for them to leak, Si!
_________________
Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.

Check us out on Facebook! Please "like" our page!

i should have seen that coming
_________________
ive seen more tarts than mr kipling

Hi Si ,you say you should have seen that coming,i thought the comments were fair and then that out of the blue,if it was a boxing match he would have been disqualified,
but i must say it did make me chuckle,
jonmac,
_________________
John

I'd never swing after the bell! It's just not British!
_________________
Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.

Check us out on Facebook! Please "like" our page!

to be fair to andy,that was a tame comment to what i usually get,bloody cyber bullies
_________________
ive seen more tarts than mr kipling

thanks guys. always a treat.
_________________
MC21R9N track
MC18R2J track
CBR954
CR250

cangus wrote:They have o-rings and seem to fit better without crush washers?

If there is not a good fit while using the copper washers, do not overtighten the exhaust nuts as the exhaust flange will bend and eventually leak.
_________________
2t-racelab.com