Weber DCOE Leaking Gasket

[type26owner]

If you are tired of having the paper gasket which is suppost to seal
the top cover but instead it weeps fuel, lots of it. There is a
solution. The modern day version of the DCOE has an elastomer gasket
available which almost fits except for the one extra hole which lies
on the perimeter of the sealing surface. There are two ways to get the
gasket to work great though. One is to cut a slit parallel to the
sealing surface in the solid section just adjacient to the errant hole
so when the gasket is installed but not tightened down you can grap
the protruding portion of the gasket and deflect it out by half a hole
diameter and then clamp the top cover down for an effective seal.
Secondly, I fill the hole with GE RTV 157 and let it dry overnight and
trim it somewhat to the gasket thickness. The leaking Webers will be a
thing of the past, at least from the top cover!

Would a picture of the modification help?
Keith

[type26owner]

--- In ***@***.***, "type26owner" <kdfranck@p...> wrote:

I should clarify the 'top cover' I refered to is Weber's term for the
float bowl cover, not the small round inspection cover which is
fastened on with a wing nut. It's usually the source of the largest
leaks on carbs.
Keith

[Unibrain]

type26owner wrote:

the new style gasket? The carbs on my seven don't leak but rather get
moist and collect dirt around the gasket. This is probably a precursor
to a leak and I'd like to stop it on the seven and the elan.


--
Jim
www.unibrain.org
'97 Caterham Seven - For Sale - www.unibrain.org/forsale
'66 Lotus Elan Coupe
'05 Lotus Elise, on order

[type26owner]

The rubber float bowl gasket part number is 500L4115-01 for Dave Bean
and 41715.011 for Weber. A slit modified gasket can be seen in the
file section and the file name is 'gasket_mod.jpg'
http://autos.groups.yahoo.com/group/lotuselan/files/

Need to thank Ken Gray at DBE for suggesting this gasket could be used
on the early model Webers. I devised the workaround for the extra hole
though.
Keith

[dmreeceuk]

Hi

Is it necessary for this gasket to be airtight. As my paper one is
not in very good condition(some bits missing) Does it just stop
evaporation and fuel leaks or will it contribute to perfomance of the
carbs. I had a leak on the vacuum side to the headlamps that was
causing poping back but its still there slightly. Should i get the
gasket replaced pronto?! Do you need to take the floats off to change
the gasket?

Dave
s4 1970 elan






--- In ***@***.***, "type26owner" <kdfranck@p...> wrote:

[type26owner]

Hi Dave,
The float bowl cover needs to be liquid tight to minimize the fire
danger. The cause for your popping out the exhaust can be from many
possible sources but not this one. If you've got fuel dribbling down
from the carbs enough so you can smell it while driving then by all
means get it fixed pronto. Yes, the float bowl cover must be removed
and also the float removed by pushing the pivot pin out to replace the
gasket.
Keith
--- In ***@***.***, "dmreeceuk" <davidmreece@h...> wrote: