Author Topic: Another S2 adventure, 742R, Carnival red and "Running".  (Read 16645 times)

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Offline TurboFource

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Re: Another S2 adventure, 742R, Carnival red and "Running".
« Reply #90 on: Monday,February 26, 2024, 06:20:02 PM »
1270 socket clears output shafts …
The more I do the more I find I need to do....remember your ABC’s …anything but chinesium!

Offline Richard48Y

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Re: Another S2 adventure, 742R, Carnival red and "Running".
« Reply #91 on: Monday,February 26, 2024, 07:51:19 PM »
Yep, that is what I exchanged for.

Offline Richard48Y

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Re: Another S2 adventure, 742R, Carnival red and "Running".
« Reply #92 on: Wednesday,February 28, 2024, 06:44:02 PM »
New transmission mount installed.
Cheated and bought new nuts and bolts.
Simplest task ever so far.


Offline Richard48Y

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Re: Another S2 adventure, 742R, Carnival red and "Running".
« Reply #93 on: Thursday,February 29, 2024, 04:32:22 PM »
Output shaft seals and O rings replaced, re-shimmed.
I had been a bit concerned with this after reading several threads where folk were having issues.
But beyond awkward access and the nuts taking a bit of force to break loose it was not bad.
I did use a little Hylomar on the threads, so maybe next time will be easier.

Offline Richard48Y

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Re: Another S2 adventure, 742R, Carnival red and "Running".
« Reply #94 on: Friday,March 22, 2024, 09:19:20 PM »
Got an "Otter switch" that fits the aluminum radiator properly but the matching plug seems to be impossible.
No biggy, I will solder on a couple of wires to make a pigtail to connect to the originals.
Ohm meter does not show any connection from either terminal to ground.
Since it is just a switch I expect no polarity.
But I do note a significant difference in wire gauges at the original harness.
So, is there a polarity issue or did Lotus have some other reason for the light and heavy wires?

Offline dakazman

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Re: Another S2 adventure, 742R, Carnival red and "Running".
« Reply #95 on: Saturday,March 23, 2024, 03:57:50 AM »
 Drop it into a cup of hot water and you’ll see continuty the heavy wire should go to the bat on relay. Don’t submerge it !
  Afterwards, Just jumper the terminals to test the circuit.
 Dakazman
« Last Edit: Saturday,March 23, 2024, 04:30:13 AM by dakazman »

Offline jbcollier

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Re: Another S2 adventure, 742R, Carnival red and "Running".
« Reply #96 on: Sunday,March 24, 2024, 06:43:42 AM »
The water needs to be very hot, pretty much boiling with the later "Otter" rad fan switches.  Wiring tail is available from British car parts suppliers.  The same switch was used on late MBBs for one.

Offline Richard48Y

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Re: Another S2 adventure, 742R, Carnival red and "Running".
« Reply #97 on: Monday,April 22, 2024, 07:36:48 PM »
Original switch cannot be used with the aluminum radiator.

I did get the trailing arms and SPAX shocks back under the car.
Still have to get the new roll-pins in and the lower links.
Then I will assemble the rear brakes.

Offline Richard48Y

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Re: Another S2 adventure, 742R, Carnival red and "Running".
« Reply #98 on: Tuesday,May 07, 2024, 12:15:58 PM »
Hmm, Rear trailing arms and shocks are in place.
Offered up a stock lower link and see that it does NOT naturally align between the trans mount and upright.
Checked the book, no spacer at the upright is shown. So the bushes would be under a lot of twist.
In order to use an adjustable lower link a spacer is required to clear the shock.
My car had short spacers, looks like these will have to be a little longer.
My preference would be no spacers.
But that puts the arm of the lower link at more of an angle and will not clear the SPAX shock.
I will try to get a pic after assembly.

Offline Bryan Boyle

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  • 1974 Europa JPS #142 3291R
    • Lotus Europa Collection
Re: Another S2 adventure, 742R, Carnival red and "Running".
« Reply #99 on: Tuesday,May 07, 2024, 01:27:23 PM »
Hmm, Rear trailing arms and shocks are in place.
Offered up a stock lower link and see that it does NOT naturally align between the trans mount and upright.
Checked the book, no spacer at the upright is shown. So the bushes would be under a lot of twist.
In order to use an adjustable lower link a spacer is required to clear the shock.
My car had short spacers, looks like these will have to be a little longer.
My preference would be no spacers.
But that puts the arm of the lower link at more of an angle and will not clear the SPAX shock.
I will try to get a pic after assembly.

What you want are 'cone washers'.  They are used to center ball joints so the ball doesn't bind and can rotate to the limit of the design.  See below.  What I did on 693R.  It's what they're made for and certainly proper use for this case.

« Last Edit: Tuesday,May 07, 2024, 01:29:21 PM by Bryan Boyle »
Bryan Boyle
Morrisville PA
Commercial Pilot/CFII/FAA Safety Team
Amateur Extra Class Operator & FCC Volunteer Examiner
Currently working on 3291R, ex 444R, 693R, 65/2163, 004R, 65/2678
http://www.lotuseuropa.us for mirror of lotus-europa.com manual site.

Offline GavinT

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Re: Another S2 adventure, 742R, Carnival red and "Running".
« Reply #100 on: Wednesday,May 08, 2024, 12:31:55 AM »

Offered up a stock lower link and see that it does NOT naturally align between the trans mount and upright.


There's a drawing in the workshop manual with relevant dimensions.
I believe TC/TCS links use different pivot angles for the end bushes.

Offline Richard48Y

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Re: Another S2 adventure, 742R, Carnival red and "Running".
« Reply #101 on: Friday,May 10, 2024, 12:06:36 AM »
Ran into a snag with the lower links.
The rod ends are too large in diameter to clear the bases of the SPAX shocks.
This left me two choices, space them to fit behind the shock or space the shocks a little to make room.
I did not like the way leverage would act on the upright with the lower link spaced so far back.
I expect the shock exerts less force as it moves and has give.
I used Mezier safety washers and custom spacers I spun up on my lathe.
I'm guessing I might have been able to buy rod ends that were smaller in outer diameter but these are about new and in hand.
Swaged 15" tubes from Summit Racing were inexpensive.
16" were a little long, seems 15.5" would be ideal but are not readily available.

Offline TurboFource

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Re: Another S2 adventure, 742R, Carnival red and "Running".
« Reply #102 on: Friday,May 10, 2024, 04:08:26 AM »
On TCST the lower links are in front of the uprights and much straighter …. Is a Twin Cam different than an S2 in this setup? No fancy spacers needed etc.
The more I do the more I find I need to do....remember your ABC’s …anything but chinesium!

Offline BDA

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Re: Another S2 adventure, 742R, Carnival red and "Running".
« Reply #103 on: Friday,May 10, 2024, 07:24:27 AM »
The shock and lower link share the same bolt on the TC. On the S2, the link and shock are on separate bolts.

Offline jbcollier

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Re: Another S2 adventure, 742R, Carnival red and "Running".
« Reply #104 on: Friday,May 10, 2024, 10:03:35 AM »
Yup shocks to the outer hole and link to the inner: