Lotus Elan

What did you do to your Lotus today...

PostPost by: rgh0 » Sun Aug 29, 2021 12:41 pm

Locked down again here in Melbourne so no racing but plenty of garage time. I have started measuring up my spare race engine that I retired in 2017 to change it from Avgas which can no longer be used in my racing category to premium unleaded. It will be same spec as my current race engine but as its combustion chamber is smaller I need a smaller intruder.

From my measurements with a 37.5 cc combustion chamber, 83.5 mm bore, 0.50 mm piston deck to block deck, 82.4 mm diameter of piston land down 6 mm to top ring, 0.80 mm compressed head gasket and various details around the valve cut outs.... then a 3.5 mm intruder will give me my target 10.8 compression ratio. I have borrowed a piston holding jig from Col at Elantrikbits and will mount it in the lathe to machine the intruder down next weekend. By then I should also have the crank and rods bearings I need to start assembly :)

cheers
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PostPost by: billwill » Sun Aug 29, 2021 2:20 pm

Finally got around to changing the oil in my gearbox & diff.
See: viewtopic.php?t=49562&f=37&start=15#p360452

Just as well that I did really as there was very little oil in either casing.
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PostPost by: billwill » Sun Aug 29, 2021 2:30 pm

Here's a small intruder for Rohan.
Image

:D
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PostPost by: SENC » Sun Aug 29, 2021 7:28 pm

Waiting on a camshaft, so started gearbox reassembly...

IMG_20210829_152551.jpg and
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PostPost by: steve lyle » Tue Aug 31, 2021 11:06 pm

Just about finished up all the little projects for the car before taking off for the 1200 mi trip to LOG 40. Including:

- Replaced the wiper gear boxes. I was losing blades and getting random blade parking. Now solved.
- Epoxied in some metal plates, drilled and tapped to hold down the shift lever gaiter.
- Removed all bullets in the interior harness, replaced with Mate-n-Lok connectors, making it easier to remove and install the dash.
- Installed threaded inserts in the dash panel for the trim pieces and bonnet release.
- I had previously put in footwell lights, but the drivers side weren't attached, now they're screwed into wood block epoxied to the underside of the dash top.
- When I installed the 5-speed, I cut the radio antennae when trimming the carpet around the shift opening. Now the antennae is spliced.
- The heater fan would whine for 20 seconds or so on starting up. I rebuilt the heater box, and disassembled and oiled the fan motor. Now it purrs...
- I recentered the steering shaft turn-signal reset thingy, so now the signals cancel correctly.
- After multiple attempts, I think I've finally adjusted the bonnet latches so the passenger one actually holds the bonnet down at speed.
- The passenger door had sagged a little, requiring it to be lifted to latch. Adjusted so that it closes easily.
- Adjusted the front suspension coil overs to give another fraction of road clearance.
- Replaced the brake fluid, an every 2 year ritual.

Last thing on the list is to replace the tires. General Altimax RTs. They're supposed to arrive tomorrow.
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PostPost by: Mazzini » Wed Sep 01, 2021 6:24 am

Well done Steve and good luck on your trip. Looking forward to hearing your thoughts on how the 5 speed box works out.
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PostPost by: rgh0 » Wed Sep 01, 2021 6:47 am

billwill wrote:Here's a small intruder for Rohan.
Image

:D

hahaha

cheers
Rohan
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PostPost by: stugilmour » Tue Sep 07, 2021 5:28 pm

Ran a few errands.
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PostPost by: TBG » Tue Sep 07, 2021 7:24 pm

Love it! Well done!! D

Booze carrier!

Booze carrier2011 (3).JPG and
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PostPost by: jk952 » Tue Sep 07, 2021 8:48 pm

Removing the somewhat mysterious cutout. Or should I say fibreglassing in the cutout. Not finished yet obviously.
Note the early edition device it is sitting on… :)

B1645A97-FFDE-434C-98E3-3A504DAAFD30.jpeg and





Nice lumber truck and beer transporter!
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PostPost by: Brad B » Sat Sep 11, 2021 12:30 am

Test drove my 6 week old new left knee.
Happy with the knee, but what’s causing mild coughing backfire in the Dellortos around steady 4500rpm?
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PostPost by: steve lyle » Thu Sep 23, 2021 4:05 am

Started in earnest addressing the "casualties" from the LOG 40 trip. I've got a couple of weeks to get these done before heading off to the the Brits in the Ozarks show in Fayetteville, AR.

First up - the passenger door window mechanism failed. The cable didn't break, but it did come off the lower rear pulley. I figured this would be relatively easy - last year I rebuilt the driver side, using Alex's clamp bolts, so I had the cable, his bolts, and just needed a new set of pulleys and the fuzzy strips at the top of the door. Those came in from RDE yesterday, so I got started.

Of course, it wasn't as easy as I thought. I couldn't get two cables through either clamp, so I must have used both large hole clamps on the drivers side. And when I tried to drill the hole out a size larger, I actually broke the bolt. Argg. So I was left with reusing one of the old clamps. I did my best at guessing how to put 6 ft-lbs on a nyloc nut with an open end wrench. So far, it seems I guessed right. I frayed the cut ends and dabbed them with epoxy, so if I was a little light on the torque, maybe they'll hold.

It took me maybe 2 hours to get the door lock mechanism hooked up. Does anybody have any tips for getting the outer latch push button actuator rod hooked up? That was the long pole. Here's my hint - DO NOT try to do this after installing the window lift motor. Do it before. That was probably 1:45 of my problem. Confession - I ddn't even try to hook up the door lock rods. I never lock any car where entry just requires a knife, anyway.

Two more jobs to do. 1) When I rewired the car, I somehow made it so I only have brake lights when the parking brake is on. So I have to sort that out. 2) It seems like every long trip I run into a situation where the exhaust pipe hits the road. With the Voigt 5-speed there isn't much space under the tranny for the pipe, so it ends up basically pushed up against the transmission support, transmitting vibration into the cabin., So I'm thinking I need to fab up a better support than the plate that Voigt provides - something that goes up into the tunnel even a 1/2" would do it.
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1972 MGB Roadster @ https://www.mgexp.com/registry/1972-MG- ... 842G.4498/
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PostPost by: h20hamelan » Thu Sep 23, 2021 5:26 am

steve lyle wrote: Voigt 5-speed there isn't much space under the tranny for the pipe, so it ends up basically pushed up against the transmission support, transmitting vibration into the cabin., So I'm thinking I need to fab up a better support than the plate that Voigt provides - something that goes up into the tunnel even a 1/2" would do it.


the RHD folk are lucky as they can notch a tunnel in the body beside the chassis for the exhaust. Which doubles as keeping passenger weight low!
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PostPost by: 1owner69Elan » Thu Sep 23, 2021 6:55 am

steve lyle wrote:Started in earnest addressing the "casualties" from the LOG 40

2) It seems like every long trip I run into a situation where the exhaust pipe hits the road. With the Voigt 5-speed there isn't much space under the tranny for the pipe, so it ends up basically pushed up against the transmission support, transmitting vibration into the cabin., So I'm thinking I need to fab up a better support than the plate that Voigt provides - something that goes up into the tunnel even a 1/2" would do it.


Steve, I’ll remind you that I had this same problem, especially with the TTR large bore (race systems) exhaust. I got around the problem by using the standard transmission support (actually used an upgraded, stronger version from TTR). I rotated it 180 degrees and then dropped it 3/4” with some aluminum spacers. Just gave me enough room for the exhaust. Not sure it buys you 1/2 inch but it was just enough in my case such that there is no contact or rattling/vibration.
BF704BDD-2CE2-4E2E-8F69-E0BDB9ED37A1.jpeg and
86802634-783B-4C2C-941D-DE8027561514.jpeg and


Uses existing threaded frame holes and transmission saddle. No frame drilling or fabrication needed except for the spacers constructed from aluminum bar stock. And just longer bolts through the spacers are needed. Positions the transmission in exactly the same place as the Voigt mounting plate but with a little more clearance for the exhaust.
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PostPost by: Quart Meg Miles » Thu Sep 23, 2021 9:43 pm

Alternatively fit some sacrifical skid plates either side of where it grounds. I ought to do the same on mine now that there are "speed bumps" everywhere. New tyres gave me an extra 5 mm clearance!
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