[Healeys] Overdrive Question

[Roger Grace]

Sorry to reopen this, but have this same leak in my BJ8 OD and fixing it is one of my Winter projects.
Given that the black sealant stuff that was used before didn’t last (have no idea how long ago or what it is) and that there is no oil pressure on the joint, am sensitive to using what is the appropriate goo that will last and contain the oil.
Have done some checking around and the Hylomar universal blue is used by some shops that fix OD’s.
Overdrive Services (ex Laycock people in UK) tell me that the originals were sealed with a product called Wellseal.
Nowadays they use a Wurth sealant that mentions flange mating in its website blurb.
BTW they said that they could supply me with a gasket for this joint that seems like a good idea ?

The reality is that these are 2 Al flanges that are mated without a gasket. I wonder why ?. Plan to do some careful flatness checking when have my hands on them.  Has anyone had a problem with the mating flatness ?  do they have a tendency to warp over the years and maybe abuse too ? given the shape not easy to machine flat - why do they leak ?

Comments/ideas please.
rg


From: David Porter 
Sent: Wednesday, October 26, 2016 7:15 AM
To: Bob Spidell ; John Spaur 
Cc: healeys 
Subject: Re: [Healeys] Overdrive Question

seems like any RTV that is oil compliant will work. There is no internal pressure that will force oil out. The oil level in the OD is just above the operating shaft level, hence the need for the o-rings on the shaft.

DaveP adding to the wisdom....




On 10/26/2016 7:40 AM, Bob Spidell wrote:

  Soooooooo ... both types of Hylomar WILL seal the joint?



------------------------------------------------------------------------------

  From: "John Spaur" mailto:jmsdarch at sbcglobal.net
  To: "WILLIAM B LAWRENCE" mailto:YNOTINK at msn.com, "healeys" mailto:healeys at autox.team.net
  Sent: Tuesday, October 25, 2016 8:27:53 PM
  Subject: Re: [Healeys] Overdrive Question


  In my experiences neither of the two types Hylomar will not seal that joint.



  John Spaur

  San Jose



  From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of WILLIAM B LAWRENCE
  Sent: Sunday, October 23, 2016 8:26 PM
  To: healeys at autox.team.net
  Subject: [Healeys] Overdrive Question



  …disassembly of the OD because it is seeping oil at the clutch ring. There are no gaskets, but I would like to smear some Hylomar on the joint faces to stop the leak. 


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-- 
Dave Porter Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM 87107 505-352-1378 Go HERE: my world www.porterbikes.com/ 


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