JPS Project

[Fridge]

Yes, make sure that plenum is well sealed. Normally that goes in first, then the windscreen wiper wheel thingy.

[Djs44]

Has anyone fitted the PNM rear calipers on their car ? I'm wondering if I've fitted my incorrectly as the handbrake cables have to take a really twisty route ...

[Gis]

I have the PNM calipers on my LTE. You have fitted them correctly. They require a re-route of the hand brake cables. Mine run over the top and down. Instead of being curved below. 

[Djs44]

Thanks , I’ve fitted them now - they are about a foot too long but it’s all hidden away …

[Fridge]

Did you sort out your plenum for the heater, and those holes in the top of it?

I could have explained it better if I'd had time to call in last Wednesday.

[Djs44]

David - yes thanks all sorted with the Plenum 

[Djs44]

I wrote a letter about my JPS journey to Classics Monthly and it was published this month  

[Fridge]

Auchtertool eh? I know the area reasonably well with pals in Dundee and beyond, and have passed by the Knock Hill race circuit on my way to see friends in Crieff.

[Djs44]

Born and ( mostly ) brought up in Kirkcaldy . 

Got some bits to collect from Lotusbits tomorrow 😀

 

[Fridge]

"Kirk-caldy" as I thought it was pronounced. Doh! 😆

Was there in 2014, and made very welcome.

Certainly quicker to LotusBits from Kiddie than Kirkcaldy.

[Rambo]

Phonetically Kirkcaldy is "Kur-caw-dee" ie silent k and l.

[Djs44]

9 hours ago, Rambo said:

Phonetically Kirkcaldy is "Kur-caw-dee" ie silent k and l.

Yes, often pronounced incorrectly . 

I spend 5 years growing up in Galashiels . 

Just come back from 4 days with Mother which included a nice day out in the Borders - lovely roads 

 

[Fridge]

Yes the roads up there are brilliant. I spent my teenage years cycle touring up there from Teesside. Carter Bar, Jedburgh and Kielder etc.

Kirkcudbright is another place mispronounced. Lovely place.

[Djs44]

Got the new radiator shroud in the right place and drilled and then dummy fitted the rad . Just need to figure out how to fit/plumb the front mounted oil cooler . Glad I fitted all the headlight motors - shame they had to come out again as the shroud bolts share the same bolts as the motor mounts , how I laughted. 

Spend ages trying to see how the brackets I was given hold the rad in ... apparently they are the wrong ones .... oh joy .  

I've had to do a bit of fibreglassing of the rad shroud to improve fit . Then paint it in raptor. 

 

Q - the oil pressure pipe to the gauge is plastic tube - is it worth changing to a braided hose ?

Might finish the front brake pipes, fit the speedo cable  off tomorrow whilst I wait for the correct rad brackets to appear . 

[Burg57]

Plastic pipe to the oil pressure gauge is the norm. No need to change to braided unless you are building an F1 JPS!

[JonSE]

How are you taking the oil cooler forward? Does this negate the rear one? Very interesting, expect a lot more efficiency from a front mount.

Also, regards oil pressure, is there a way of converting to an electrical signal at source as opposed to running oil through the car for a simple pressure reading?

[Fridge]

7 minutes ago, JonSE said:

lso, regards oil pressure, is there a way of converting to an electrical signal at source as opposed to running oil through the car for a simple pressure reading?

You need an S1 @JonSE🤪

[JonSE]

Ah, that ship sailed expensively for me as a wannabe years ago! 🤣🤣🤣

[Fridge]

Incidentally, I was told last month that the four Veglia sub-gauges are bi-metallic and not actuated by a electromagnetic coil as I had thought.

OK, back to JPS stuff...

[Djs44]

2 hours ago, JonSE said:

How are you taking the oil cooler forward? Does this negate the rear one? Very interesting, expect a lot more efficiency from a front mount.

Also, regards oil pressure, is there a way of converting to an electrical signal at source as opposed to running oil through the car for a simple pressure reading?

Jon . Pipes come down the middle of the chassis and yes , rear cooler is deleted  

I’m sure there must be a pressure sender that fits to the engine with an electrical feed to the gauge .

I will stick with the plastic pipe for now thanks 👍🏻

[Fridge]

Apologies for hijacking the thread again, but @JonSE it may be worth you reading this thread that I think describes converting the mechanical oil pressure gauge pipework to a transducer and electrical.

 

https://www.lotustalk.com/threads/access-to-oil-pressure-gauge-hose-pipe-to-engine-87-turbo-esprit.478216/#post-6030628

[drdoom]

In my experience oil pressure readings are not so much a tool for averting engine trouble as they are something about which to fret. Witness the references through the years in these forum threads, plenty of concerned discussion from which little concrete action arose. What I have observed in terms of oil related failures has been momentary intake of air at the sump pickup causing big ends to blow out, this taking less time than pressure readings from either gauge type would afford a remedy. Typically it's a matter of prolonged hard cornering ( worse turning right on the 900 series equipped cars ) while spinning the engine at high revs, the consequent damage done in short time. Oil levels in sump are dead critical for the early MBP/sump fitted engines when thrashing about, and Lotus gave due attention to the matter with both the dry sump Turbo and all subsequent 910/912 engines.

Cheers

[JonSE]

Thank you, I had issues on an old esprit with where the tube union left the block, it was leaking and an odd thread type which was very fragile .

Fould’s  (U.K. specialist) fixed it good, but with the engine being out of this car, I may take the chance to convert to electrons to keep the vital juices in the engine bay!

Regards the delay to dial reading comment above, was also exploring if a trigger system existed as in racing cars to light an emergency lamp via the same sender, get 2 readings out of the same unit, one being an urgent attention type signal…

 

[drdoom]

It's perhaps true that a warning light could alert a driver very quickly as to loss of pressure, so affording a chance to minimise the damage. It's been explained that the intake of air into the gallery results in a compressed bubble causing the momentary blowout of the oil wedge in the bearing-journal interface, thus the damage when occuring while putting the hammer down. If that's correct, then I suspect the process would not necessarily produce a corresponding change of gauge reading until damaged bearings opened up the clearance permanently. If however we might lay off the engine quickly enough perhaps the crank might be spared costly damage.

[Fridge]

Unless you're tracking an Esprit I'm not sure it's worth it on a road car. Though they corner well, compared to a present day rocket shopper they're pedestrian.

@grayp77 is the one to advise as I believe he has tracked his modified S1 extensively.