Lotus Elan

Sump removal, engine in car

PostPost by: nwbaxter66 » Fri Nov 26, 2021 9:43 pm

Federal plus 2. Weber head

Pulled the crank pulley to replace with a 36-1 cogged wheel

Woodruff key has vanished!

In an abundance of caution I figure I probably should pull the sump to check it hasn’t ended up in there — is that even a possibility?

Assuming I need to pull it, can it be done with engine in car?

Thanks

N
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PostPost by: EPC 394J » Fri Nov 26, 2021 10:48 pm

I believe it depends what chassis you have and whether the crossmember is removable?
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PostPost by: 2cams70 » Sat Nov 27, 2021 1:20 am

The woodruff key actually extends further and into the oil deflector and timing chain sprocket behind so there's actually no way it should fall out just by removing the pulley. It may have sheared off. I'd be investigating further with an inspection light to see what lies behind the pulley.

I'm not sure why you wish to replace the standard pulley with something else by the way. Unless you need a crank trigger for fuel injection (waste of time if it's just ignition you are thinking about) there really is no need.
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PostPost by: nwbaxter66 » Sat Nov 27, 2021 2:40 am

Thx
Needed a crank pulley with ring for efi crank sensor
(:
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PostPost by: alan.barker » Sat Nov 27, 2021 5:34 am

EPC 394J wrote:I believe it depends what chassis you have and whether the crossmember is removable?

It's a +2 so member is removable :wink: :wink:
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PostPost by: Hawksfield » Sat Nov 27, 2021 11:29 am

I am pretty sure the key cannot go into the sump as the oil deflector plate closes off the rear of the pulley and is tight up to it. If it was pushed out when fitting the pulley the pulley would not go fully home. I suggest that it was left out somehow. As suggested an inspection is required.
It is possible that it has been running without a key.
On reflection the key is trapped in with the crank sprocket so if it was present when the chain case was installed it would not move at all when the pulley was fitted, the inspection is imperative


Good luck
Last edited by Hawksfield on Sat Nov 27, 2021 11:55 am, edited 1 time in total.
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PostPost by: alan.barker » Sat Nov 27, 2021 11:53 am

If there was no Key, how did you do Ignition Timing in the past.
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PostPost by: RichardHawkins » Sat Nov 27, 2021 7:44 pm

Nick,

It’s been awhile since I’ve fitted one of these pulleys, but I think I remember that as you install the pulleys you need to apply inward pressure whilst also rotating the pulley and you will feel pulley engage with the key. If this is correct you will feel if the key is present.

Hope this helps,

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PostPost by: nwbaxter66 » Sat Nov 27, 2021 8:19 pm

The key was in the pulley before I pulled the Pulley off.
So Its a question of looking closely all around before I pull the sump.
Thanks
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PostPost by: Chrispy » Sat Nov 27, 2021 8:44 pm

Back to the original question, yes you can remove and replace the sump in a Plus 2 with engine ine. It's a pretty miserable job on jackstands. Use a hoist if you can.
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PostPost by: nwbaxter66 » Sat Nov 27, 2021 8:56 pm

Thanks much
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PostPost by: Billmack » Mon Nov 29, 2021 12:09 am

I really dont think its possible for the key to fall inside. Get a good bright light and look more but I dont think its possible. Use a seal puller ti get the front seal out to look behind it . i think the key is bigger than the space between the cover and the slinger inside the cover.
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PostPost by: nwbaxter66 » Mon Nov 29, 2021 1:17 am

Thanks much.
Busy day so didn’t get to it yet (:
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PostPost by: Peter +2 » Tue Nov 30, 2021 9:05 am

I have replaced +2 sump in situ on a standard Lotus chassis car. It’s a real pain but doable. To help I used some studs and longer bolts to line up and hold the sump in place. Once in place, the studs and long bolts were removed and correct ones inserted, The big difficulty I recall was getting the lip seals to stay in place. Someone on here recommended aviation type gasket sealant which is tacky enough to hold them in place, but very very tricky from underneath.

I would make every effort to find the missing key so to avoid doing this job.
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PostPost by: gjz30075 » Tue Nov 30, 2021 9:47 am

Drain the oil and it may come out, IF, it made that far. Then, with a borescope, look around inside.
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