Lotus Elan

Missing Oil Slinger & Refit

PostPost by: EwanG » Mon Nov 13, 2023 10:35 am

In my last post on 30th June, I had removed the cylinder head in my quest to try and start the car for the first time (she was turning over but not starting). I purchased the car in April 2023 and when registering her as SORN I discovered that she has been off the road since around 1980. I suspect the engine has been turned over regularly since then and I also found an old receipt from 1980 for the regrinding of the Crankshaft for a "princely sum" of £21.74! This amounts to most of the history I know of the car.

The head is now off to a machine shop for some maintenance (some valves were sticking and valve train generally needing some attention). Will use the opportunity to make some minor upgrades to the head.

In the meantime I proceeded to remove the engine and then the gearbox with a view to renewing all gaskets and seals, water pump, clutch etc... (down another giant rabbit hole :shock: ). It took a significant amount of time to remove the front timing case cover as the water pump o'ring carrier and impellor were stuck fast to the back plate. I was constantly on this forum to learn from other's experiences which along with buckets of perseverance, heat, levers, more heat, and eventually some brute force to remove both front and back covers. The o-ring carrier was still well and truly 'welded' to the back cover and the impellor came out in pieces. I guess 43 years of storage doesn't help, but the resources on this forum certainly did...

Anyway, long story short, with the water pump kit now successfully instalIed I am now ready to refit. After fitting the rear cover, all of my reading resources were suggesting that I needed to "refit the Oil Slinger". Up until now, I'm not sure that I had ever heard of an oil slinger let alone have any recollection of removing. After a quick rummage through my labelled zip bags, and looking back at all my photos, it would appear that it was not fitted in the first place. I have now ordered a new one and taken the opportunity to order new jackshaft locktab at the same time (just awaiting delivery).

My simple question is, does the slinger just slip onto the end of the Crank Sprocket prior to the front cover being refitted? Is it just a compression fit? Are there any particular fitting tips? It's probably so obvious that I can't find any detailed references anywhere but taking the "measure twice" approach as I am not in any hurry to remove these covers again anytime soon :D

PS - if anyone out there knows any history of CTW 26G, please let me know!
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Lotus Elan Plus 2 1968 (Restoration - off road since 1980)
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PostPost by: rgh0 » Mon Nov 13, 2023 10:51 am

The oil slinger is fitted between the sprocket and crankpully. It needs to be fitted before the front cover is assembled. It is then clamped in place by the front pulley when it is fitted after the assembly of the chain cover / water pump. It is sometimes missing as people forget to fit it before fitting the front cover and dont want to disassemble to fit it when they miss it.

cheers
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PostPost by: EwanG » Mon Nov 13, 2023 10:58 am

Thanks Rohan, makes perfect sense (I can easily imagine that sinking feeling when refitting your engine and gearbox and discovering an extra bag of parts sitting on the bench :oops: ). Cheers...
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PostPost by: 512BB » Mon Nov 13, 2023 11:10 am

It is possible to fit the slinger two ways round. There is the correct way, and the wrong way. 40 odd years ago, on my first twin cam engine rebuild, indeed, my first engine rebuild, I fitted it the wrong way round, but noticed before final bolting up of the front cover. Learnt from that mistake.

I hope you have fitted new locktabs to both the jackshaft securing U plate and sprocket.

All the best,

Leslie
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PostPost by: EwanG » Mon Nov 13, 2023 11:30 am

Thanks Leslie. I hadn't thought to do the Thrust U plate locktab too but will add that to the list!

From the pictures, I was assuming that the wider diameter end of the oil slinger faces away from the block but I can't actually find any good pictures of it in situ - is that correct?

Cheers,
Ewan
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PostPost by: types26/36 » Mon Nov 13, 2023 12:04 pm

Here is a picture with the slinger in place.
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PostPost by: EwanG » Mon Nov 13, 2023 12:27 pm

Thanks Brian - perfect!
Lotus Elan Plus 2 1968 (Restoration - off road since 1980)
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