Lotus Elan

Sprint....Oil leak from sump gasket

PostPost by: bloodknock » Sun Jul 26, 2020 4:08 pm

Hello people
I have spent YEARS carefully fully restoring my Elan Sprint Coupe. Just at the point of filling the beast with fluids and.....Ive got an oil gusher like a texan oil field strike!
I am soooooo pissed off :x as i have been absolutely meticulus in the restoration work. Every component has been stripped cleaned and restored to as new. The engine machining and head work done by reputable well known specialist though I assembled the engine myself.
Now, in the dim and distant (ive worked on at least five twin cams in thge past) I have had occaision to drop the sump, ive experienced the early four bolt rope seal twinks, which, in my experience, always weeped oil. In those days it was hylomar, hematite and early silicon compounds.... so ive suffered curing leaks in the past.
The leak on the sprint is near the rear of the engine and appears to be from the cork gasket area, so the only solution is to strip it and replace the gasket. The engine has never even been started since the rebuild, so its all spotlessly clean.
What im seeking is advice, is it feasible to achieve an oil tight seal when replacing the gasket from underside of the car? Since I'm now 75, the faculties are frayed, eyesight not too bad, but joints creaky, and im concerned that i might not properly clean and reseal the gasket. I have to work from beneath the car on axle stands, since I have now downsized my home and parted with my engine removal equipment.
Ive read an fair bit from the contributions on this magnificent forum, noticing that Rohnan appears to be one of the aknowledged experts, and would be most grateful for comments and advice from contributors.
My thanks to all
Bob
I've got a deadline, at 73, I want to finish it before I die!
User avatar
bloodknock
Fourth Gear
Fourth Gear
 
Posts: 588
Joined: 04 Jun 2012
Location: Colwyn Bay, North Wales

PostPost by: mark030358 » Sun Jul 26, 2020 4:18 pm

Hate to say it, but if you really want an oil tight engine pull it out, easier and quicker.. One thing to look for is that the sump hasn't been deformed by over tightening the bolts. If so hammer them flat. When I did an S4 I fitted the sump gasket to the block with some RTV and placed the sump on top and let it set over night. Then RTV'd the other side and torqued up.

Probably not what you wanted to hear :(

cheers
User avatar
mark030358
Fourth Gear
Fourth Gear
 
Posts: 925
Joined: 29 May 2004
Location: Willaston, Wirral

PostPost by: oldelanman » Sun Jul 26, 2020 5:40 pm

Hi Bob, don't despair !
I'd be surprised if the leak is from the sump gasket, the oil level is well below the gasket and as the engine hasn't run it won't have been sloshing about over it either. Could it be spillage from the filler neck which has run down the block or a leak from the cam cover gasket which can be submerged as you fill if you pour too quickly ? Here's hoping you don't need to remove the sump.
All the best
Roger
S4 DHC
oldelanman
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1676
Joined: 02 Jan 2008
Location: Dorset UK

PostPost by: el-saturn » Sun Jul 26, 2020 8:23 pm

oldelanman...............makes...also....hope,---------me....tooo......sand
el-saturn
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1420
Joined: 27 Jun 2012
Location: switzerland

PostPost by: pharriso » Sun Jul 26, 2020 9:01 pm

bloodknock wrote:Hello people
I have spent YEARS carefully fully restoring my Elan Sprint Coupe. Just at the point of filling the beast with fluids and.....Ive got an oil gusher like a texan oil field strike!..

The leak on the sprint is near the rear of the engine and appears to be from the cork gasket area, so the only solution is to strip it and replace the gasket. The engine has never even been started since the rebuild, so its all spotlessly clean.

My thanks to all
Bob


Well that sucks. Thinking aloud - So all you have done is pour the Oil in & it's leaking? The Oil should just be sitting low in the sump... :?: The sump gasket is not submerged in Oil....
Last edited by pharriso on Sun Jul 26, 2020 11:20 pm, edited 1 time in total.
Phil Harrison
1972 Elan Sprint 0260K
User avatar
pharriso
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 2799
Joined: 15 Sep 2010
Location: Long Island NY, USA

PostPost by: p.faurie » Sun Jul 26, 2020 9:37 pm

Check the rubber pipe head drain to block,if it leaks it runs down by the fuel pump and the the side of the sump towards the rear,without even running the engine,worth a check
Phil
p.faurie
Second Gear
Second Gear
 
Posts: 98
Joined: 06 Mar 2009
Location: Kent uk

PostPost by: MarkDa » Sun Jul 26, 2020 11:11 pm

That is very disappointing after all your hard work.
Try easier solutions first - as others have said try to follow the leak upwards.
MarkDa
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1148
Joined: 15 Apr 2017
Location: Stroud

PostPost by: StressCraxx » Mon Jul 27, 2020 5:27 am

Hello Bob,

I suggest positively identifying the source of the leak first. I had a similar issue with a mystery leak. My friend the race mechanic gave me a clue. I filled a plastic spray bottle with soapy water - a few drops of dish soap. I put one pound of compressed air pressure (no more or you'll pop the rear main seal out) into the crankcase breather and sprayed over the back of the engine. In my case it was the back exhaust side rubber cam bore plugs that had come adrift during assembly and left a gap allowing the oil I had filled to drain out over the back of the engine. The soapy water bubbled from the air coming from the gap. Saved me from pulling the pan.
There is no cure for Lotus, only treatment.
User avatar
StressCraxx
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1033
Joined: 26 Sep 2003
Location: San Francisco Bay Area, California

PostPost by: bloodknock » Mon Jul 27, 2020 8:59 am

Hello friends
All of the forgoing is very useful and I will certainly try the suggetions out, simplest first! The comments about oil level in the sump are particularly interesting, I should have thought of that myself, but as I say time has dulled my abilities in more ways than one! :?
It will be a little time before i get back to it as my wife is ill and needs my support, but i'll let the forum know what i find.
Bob
I've got a deadline, at 73, I want to finish it before I die!
User avatar
bloodknock
Fourth Gear
Fourth Gear
 
Posts: 588
Joined: 04 Jun 2012
Location: Colwyn Bay, North Wales

PostPost by: englishmaninwales » Mon Jul 27, 2020 10:51 am

Bob,

I’ve sent you an email about this.
Malcolm
1966 Elan S3 Coupe
1994 Caterham 7
englishmaninwales
Fourth Gear
Fourth Gear
 
Posts: 520
Joined: 26 Jul 2013
Location: Ruthin North Wales

PostPost by: bloodknock » Mon Jul 27, 2020 12:07 pm

Thanks Malcolm
Ive not yet received the email, you didnt mean message did you?
regards
bob
I've got a deadline, at 73, I want to finish it before I die!
User avatar
bloodknock
Fourth Gear
Fourth Gear
 
Posts: 588
Joined: 04 Jun 2012
Location: Colwyn Bay, North Wales

PostPost by: englishmaninwales » Mon Jul 27, 2020 2:07 pm

I sent it to the email address you gave me when we discussed car storage.
I’ve now also sent it as a forum message.
Cheers
Malcolm
1966 Elan S3 Coupe
1994 Caterham 7
englishmaninwales
Fourth Gear
Fourth Gear
 
Posts: 520
Joined: 26 Jul 2013
Location: Ruthin North Wales

Total Online:

Users browsing this forum: No registered users and 15 guests