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Esprit Turbo project car - part3 - the further continuation - Page 239 - Esprit 'Project & Restoration' Room - The Lotus Forums Jump to content


Esprit Turbo project car - part3 - the further continuation


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Thanks Dave. Nearly there on the tuning its within 3 mm but I want it spot on. Morgan carbtune, I had a lot of practice!   Slight oil leak form the rear cam cover on the inlet, easily fixed. I should

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On the other hand, the adhesive used at factory permits removal of the mirror with a heat gun therefore without risk of grief should one have cause to change the thing out. The OEM stuff was surely some early form of cyanoacrylate, commonly called crazy glue this side of the pond.

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10 hours ago, jonwat said:

When it drops off take a look at this :thumbup:

That looks really good and reasonably priced. Mirror is holding at the moment. Its fixed with a mesh and I think Cyanoacrylate based superglue that comes in a loctite fixing pack. I think grease is the main failure cause. I cleaned it with professional degreaser.

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79A76A92-2126-4C96-A14A-3D117633082D.thumb.png.8822fce481db45c18e5edcb1dbddf878.pngTurbo Oil return pipe

Just found a slight oil leak from where it joins the Turbo. No matter how tight the bolts are it still leaks. Looking on here its quite common, but why? The first thing that comes to mind is the gasket. Why has the gasket got a square centre when the Turbo pipe is round. I think the gasket being supplied is for a different pipe design. The gasket is the picture is the one I have fitted. But the design of the pipe is totally different and round! 4C09D6F6-4BDE-413C-BE57-6B9F177E0532.thumb.jpeg.13fe2249de79f0bc362bde9d6e828912.jpegSurely the gasket should have a round centre? I have bought a generic round one and will see if it fixes the issue. 

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Forgot to say all the time I spent calibrating the pump jets using Dave Nobles rig was very well spent. The acceleration stumble is completely gone. The engine pick up has been transformed. I would say the pump jet calibration is essential if you are rebuilding your carbs.

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A large part of this car is new and with so many untested changes there are always teething problems . I had an issue with the Turbo pipe which was leaking now its perfect after a switch lo a braided pipe and new seals. There are no engine oil leaks and finally no coolant leaks after tightening some clips. 
I have found an isuue which is a bit annoying since I triple checked everything. I found a gearbox oil leak from the nearside output shaft. It was leaking onto the disc. This should not be possible as the drain hose should have directed the oil away. Further investigation showed the outlet was blocked. So I unblocked it and oil is leaking from the pipe. I examined these seals and replaced only one, as the other seemed fine. The replacement seal was about £30. It was slightly different to the original. I bet it is this one that is leaking, as the fit isn’t brilliant. I have a spare output shaft so I may switch over the seal. 
I thought I was done but guess not. 
The upside is the car is driving perfectly, its a real pleasure. I guess its worth the effort to get the spanners out and sort this last remaining annoyance.

There is not a lot of info on fitting the seals. The design is poor in my opinion. I have overfilled the gearbox level so that will lead to more oil finding its way to the seal, but even then it should cope. I will have it fixed in the next few days!

The new seal wasn't a tight fit in the housing, maybe this is part of the problem and silicon on the outside of the seal might have been a good idea?

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I'd be interested in knowing if you find out if it's the new output seal that is leaking. I fitted had new seals fitted to the gearbox when it was rebuilt, but as you know new parts aren't always the best. I can't remember, but some parts were Lotus branded OEM. Certainly the bearings. The quality of some new parts certainly aren't as good NOS that's for sure. This is across all cars, not just these ones.

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That’s just bad luck Fabian and as you say easy fix just frustrating, as you know I’ve just finished a 5 year mini build and done 45 miles finding odd weeps from hoses to tighten when I get home, in another 20 miles I will be re-torquing the head and setting the tappets followed by an oil change, one of my output shaft started to weep on my first trip but has now settled and nothing even when putting cardboard under the car when I get home. 
I think lots of these old cars weeped from the Factory especially 60’s Mini’s 🙄😂

I know you will soon have it perfect again 👍🏻
Dave :) 

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Do or do not, there is no try! 

 

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Well a busy afternoon! I rebuilt one of my other shafts only to discover it was the wrong side! Anyhow, the shaft is off and guess what its the new seal that is leaking. When I installed it I knew it was different to the original but assumed they are fitted all the time. It leaks because its too loose a fit in the housing, there is a weaker spring in it and the rubber is inferior quality. I stripped the good used seal out of the other shaft and an about to reassemble it. Took 3 hrs to get this far, not that difficult nto 5ake the shafts off when its all new. Be careful when buying these parts there are a lot out there that just arn’t fit for purpose. It caused me a lot of extra work which could have been avoided. Here it is, looks very similar but is rubbish and expensive!AE49A132-C026-4AAD-B931-9C61D1818667.thumb.jpeg.f0cc264ebf39e75c5529985014cec131.jpeg

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Interestingly the leak stopped overnight. I was measuring the fluid loss. I overfilled the box as recommended to about 2.7 L. When the leak stopped I measured the oil level it was exactly 2.25L, the Lotus recommended fill amount! 

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Might be a good idea to detail the make of the seal or where it was bought from to help others falling down with the same problem.

I'd have to check my receipts to find where I bought mine from and their manufacturer. They've been OK and have done over 1,200 miles I believe.

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Sounds like you were lucky and have different ones, mine had only done 56 miles! They don’t have any markings. Anyone buying some can PM me.

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