Lotus Elan

leak in sump

PostPost by: seniorchristo » Sat Apr 28, 2018 10:20 pm

My Elan has always had engine oil leaks but I recently noticed a large puddle under the car. It seem the sump was punctured at some point and repaired with a one inch bead of weld or brazing(?). It is now leaking at one spot alongside the weld. My plan is to drain the oil and lean the car away from the leak in the hope it will eventually stop leaking so I can repair with epoxy. This would be a short term fix as I plan to pull the engine out next winter. Has anyone have advice or had a similar experience? Some time ago I had good luck repairing a Porsche oil tank with fiberglass. Seems like epoxy should work if the surface is clean and well prepared. Thanks
Chris :)
seniorchristo
Third Gear
Third Gear
 
Posts: 457
Joined: 19 Dec 2013
Location: Pennsylvania, USA

PostPost by: 2cams70 » Sat Apr 28, 2018 11:43 pm

Been through this experience before. Don't use bronze to fix a sump. Just doesn't work. It's has to be properly welded after removing and thoroughly cleaning the sump. I've had success with Oxy/Acetylene welding.
Can't really comment on the success rate of temporary repairs as I haven't tried.
1970 Ford Escort Twin Cam
1972 Ford Escort GT1600 Twin Cam
1980 Ford Escort 2.0 Ghia
Peugeot 505 GTI Wagons (5spdx1) (Autox1)
2015 Honda City 5spd.
2cams70
Fourth Gear
Fourth Gear
 
Posts: 941
Joined: 10 Jun 2015
Location: Australia

PostPost by: rgh0 » Sun Apr 29, 2018 12:58 am

You should be able to do a temporary repair with fuel tank sealing epoxy putty. The crack to be sealed needs to be clean and oil free. A fiberglass patch on the outside should also be able to temporarily fix it.

Brazing should not be used to try to directly seal a crack in a sump but it can be used successfully to fix a sealing plate over a crack. When repairing cracks either by welding the crack directly or by brazing a sealing plate over it you always should drill out the ends of the crack with a small drill to stop it growing.

cheers
Rohan
User avatar
rgh0
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 7513
Joined: 22 Sep 2003
Location: Melbourne, Australia

PostPost by: seniorchristo » Sun Apr 29, 2018 1:19 am

Thanks so much for the excellent advice Rohan and 2cams. ! I?ll be giving fuel tank epoxy a try as soon as I have time. I was finally able to get my clutch bled properly today after months and months of struggle. :)
seniorchristo
Third Gear
Third Gear
 
Posts: 457
Joined: 19 Dec 2013
Location: Pennsylvania, USA

PostPost by: elanner » Sun Apr 29, 2018 6:56 am

User avatar
elanner
Fourth Gear
Fourth Gear
 
Posts: 514
Joined: 14 Sep 2010
Location: Boston, MA, USA

Total Online:

Users browsing this forum: mcole01 and 13 guests