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Recommissioning Lucas's Dry Sump - Page 4 - Esprit 'Project & Restoration' Room - The Lotus Forums Jump to content
Sparky

Recommissioning Lucas's Dry Sump

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Full body of  resto? Would be worth it but pricey?

Love the car!

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A couple of photos suggest that it had that, about 27 years ago, it hasn't been driven since, and the chassis looks excellent so I don't think it needs to go that far.  Beyond that, not a single nut, bolt, bearing or seal can be trusted, so I guess it comes close anyway.

Tax disc is 1992.  There are receipts for a HG set dated 1999, and a lower engine gasket set for 2003; they give me an idea of timeline for the engine.

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4 hours ago, CHANGES said:

Bit worried why you should struggle to get MBH off,  I take it the M8's  are stuck. 

Mating faces are rock solid.  The sealant of choice on this engine is blue, and it's been used copiously on pretty much every joint.  It's present inside too.

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I remember seeing this post a while back from davetoff re splitting the MBH. Looked like the best way to approach it.

IMG_2313.JPG.ef760b0a2c6e36b767e77f8fdc0

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Nice!

 

Edited by Sparky

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A good soaking did the job, and I split it today.  As feared, it's going to need pretty much everything: pistons/liners/rings/regrind/all shells.  Not forgetting valves/guides/seats as well.  It's also going to need a new oil tank, water pump will need rebuild, A/C compressor will need looking at (graunchy), and I've yet to have a good look at the towers/cams and - especially - the oil pump.  Seems the only sealant used in the entire engine was Blue Hylomar.  

Previously I mentioned damage to no4 combustion chamber - something had danced around in there.  Today when I pulled the pistons and laid them out in order, I noticed something curious.  They're etched 1,2,3,4 but were placed in reverse (4 at cambelt end).  I put this down to someone numbering from the wrong end.  BUT...  I then noticed pitting in the no1 position piston that exactly matches the damage to No4 chamber.  So it seems someone has refitted the pistons in the wrong order.  Surely not!?  At this point I was doubting myself, so I checked back through my photos and was able to confirm - pistons have definitely been replaced in the wrong cylinders. Anybody's guess what this might have meant for bearings etc.

I've taken masses of pics; a few relevant ones below...

Blue stuff

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Mains

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Big ends

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Crank

IMAG2217-20190204-19322128.jpg

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Lot of work there sparky, should keep you pretty busy!

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Was it just the corrosion locking it up? 

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Once I had the engine out and box off, I did manage to turn the crank with a lot of effort.  I'm guessing a ring snagged one of the major fissures in liner 2 or 3 on the upstroke.


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Where's the gun?  Sorry, I mean gin.


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This is sounding a bit glass half empty.

Just pour another and crack on.

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Today:  huge tidy up, internal inspection of fuel tanks, reinspection of oil tank. clean up MBH and dismantle oil pump.

Fuel tanks are sound, but have been sitting around empty for many years, so need work.  Oil tank - really should get one fabricated.  MBH (and most other bits) have jemmy marks from previous dismantling, rough mating faces, and of course, sealant everywhere.  Oil pump - well, not brilliant.

IMAG2275-20190205-185709125.jpg

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That pump looks rather untidy. The rotors and annulus' are no longer available. I have a new set of the thicker ones and I have a new pump body (both NOT for sale) but it may be possibe to copy and remanufacture them? The rotor and annulus would be the easiest to reproduce but the cast pump body would be much harder to remake. 

There was an engineering drawing for the pump shaft uploaded to the forums previously which I also have a copy of if its of any use.

I'm sure the pump will be the hardest thing to repair but I know you'll get there in the end. :)


It's getting there......

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If you could just let me know your address, and when you're next out...

Seriously though, thanks.  It may come to that. 🙂

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Hi Sparky, don't know if you use Pete at PNM? He rebuilt my oil pump yesterday and has been building these engines probably longer than anyone.. He has lots of original parts and can help you with anything including pistons etc. Definitely the way ahead. You will definitely need him on this.

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Oh yes, I know Pete very well and avail myself of his services frequently; he's the man.  But I'm not sure even he can help with a Dry Sump oil pump in this condition!

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Today I took a closer look at the cam towers and aux housing.

IMAG2324-20190206-173919498.jpg

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IMAG2348-20190206-17350728.jpg


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You missed off the word “cap”

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Only here once

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...it'll be the only thing that's not worn.


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The other thing to look out for Gary is there is a filter inside the oil tank on the pick up .

The guy restoring Essex 21 sent me these pictures of a before an after .

20180813_145533.jpg

20180813_171247.jpg

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