http://esprit.driestone.com/wiki/ 2026-04-19T16:00:26+00:00 http://esprit.driestone.com/wiki/ http://esprit.driestone.com/wiki/lib/tpl/dokuwiki/images/favicon.ico text/html 2026-04-19T15:26:12+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=engine:gasventtube&rev=1776612372&do=diff Gas Vent Tube Well, if you're familiar with the smell of gas in the cockpit of your Esprit, you probably need to replace the gas vent hose that is known to eventually deteriorate. You may have even wondered how the smell finds its way into the cockpit area. Vapors can find there way into the cockit thru the upper seatbelts recoil units, which sit right over top of the fuel tanks. In other cases it finds its way into the door sill cavity via cable and hose penetrations in the bulkhead. Thats wh… text/html 2026-04-19T15:15:10+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=other:turbocharger-theory&rev=1776611710&do=diff How a Turbocharger Works Turbochargers harness some of an engine's wasted energy to compress the air going into that engine - thereby increasing the output of the engine. Perhaps you can sense something cyclic about the previous sentence. That's because a turbocharger is by its very nature, cyclic. Use of a turbocharger can increase the output of an engine by 30 percent or more without a significant increase in the weight of the vehicle. text/html 2026-04-19T14:57:33+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=other:maintenance&rev=1776610653&do=diff Maintenance Parts and Procedures Air Filter The K&N Airfilter is part 33-2784, may be difficult to find in the USA. Can be ordered directly from K&N at <http://shop.knfilters.com/knshop/> text/html 2026-04-19T14:55:53+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=electrical:lights&rev=1776610553&do=diff Headlights The headlights on the Esprit are 5 3/4“ round sealed lights (stock). A recommended replacement is the Hella e-Code lights. This isn't a simple “drop-in” procedure though. ---------- One user notes: Just upgraded my Headlamps on a 87 HCI text/html 2026-04-19T14:52:09+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=electrical:overview&rev=1776610329&do=diff Instruments If your speedometer or other instruments on your Turbo Esprit needs to be rebuilt you can contact: Nisonger Instrument 570 Mamaroneck Ave. Mamaroneck, NY 10543 (914) 381-1952. They specialize in rebuilding English gauges. text/html 2026-04-19T14:41:24+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=other:bov&rev=1776609684&do=diff Installing a Blow Off Valve By plumbing your BOV vent back into your intake you can come closer to equal pressure on both sides of the compressor. If you can find a 3 way vacuum solenoid you can run one barb to the vacuum pump (maybe) and the other barb to boost. This way the BOV actually would see vacuum on the back side when you switch the solenoid. text/html 2026-04-19T13:22:41+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=engine:vacuumrouting&rev=1776604961&do=diff Vacuum Routing Vacuum routing is slightly different between certain model years (and US/UK models). Most of this is US-centric information. The US cars had air pumps equipped for emissions compliance. Most owners removed this system due to the fact that it would frequently break. The diverter valve and the associated plumbing is usually removed. Additionally, although the vacuum diagram seems to indicate that there is a line coming off the vacuum pump, this doesn't appear to be the case for ma… text/html 2026-04-19T13:01:28+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=other:partsinterchange&rev=1776603688&do=diff Parts Interchange Studs and bolts Exhaust studs are the same as the exhaust studs for the 1990-1999 Mitsubishi Eclipse/Eagle Talon. If you want OEM style studs you can get a stainless stud kit with 9 studs for about $110 (the Lotus engine requires 12 studs though.) OEM mitsubishi studs cost around $1 each (and add in the cost of the crush nut for $0.50 for a total of $18 for the whole thing.) text/html 2026-04-19T12:48:51+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=sidebar&rev=1776602931&do=diff Engine * Overview * Distributor * Cams * Carbs * Turbocharger * Fixing Stumbles * Removal & Rebuild * Fuel Pump & Tanks * Gas Vent Tube * Hot Start Problem Transmission * Overview Instruments/Electrical * Overview * Lights * Disassembling HVAC the Surround Suspension/Wheels * Wheels * Suspension * Suspension Redesign Brakes * Overview * Rebuilding Brakes Body * Overview * Bonnet Strut * Side Mirrors Other * Maintenance Parts/Info * Per… text/html 2026-04-19T12:39:25+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=brakes:overview&rev=1776602365&do=diff Brakes Fitting rotors on the Esprit tends to be quite a chore. On most cars equipped with disc brakes the brake rotor sits between the wheel and the hub. Removing the rotor is usually very simple (and in the extreme case may need a couple taps with a BFH.) text/html 2026-04-19T11:30:23+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=suspension:suspension&rev=1776598223&do=diff Front Suspension Lotus changed the suspension & brake design for the front of the Esprit for 1985. This means that spring/shock/brake solutions for the 1985 Esprit will not work for the 1984 Esprit, and vice versa. Also, take a look under the wheel wells of your Esprit, you will notice that there isn't much/any room for the tires to be text/html 2026-04-19T10:49:16+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=start&rev=1776595756&do=diff NOTE: This repository is specifically for the early carbureted and turbocharged cars. There is some relevant information for the HCI, and early (non US) Stevens cars as well. ---------- Welcome! Years ago I had started the Lotus Esprit Fact Registry. Over time, the site became degraded and several malicious (non Lotus) actors deleted much of the information. My own personal vehicle sat due to life events delaying its repair, so I didn't have much incentive to try to revive the wiki. text/html 2026-04-19T10:27:18+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=suspension:redesign&rev=1776594438&do=diff NrGn Ixzy'..,.)(“(. text/html 2026-04-19T04:33:28+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=engine:carburetors&rev=1776573208&do=diff Carburetors The Turbo Esprit was equipped with Dellorto carburetors from the factory. Exported cars received the DHLA 40 H. UK and North American cars received the DHLA 45 M. text/html 2026-04-18T22:22:35+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=engine:fueltanks&rev=1776550955&do=diff Fuel Pump and Tanks Fuel Pressure Fuel pressure should be read before the adjustable regulator. The fuel pressure with the pumps running but engine off should be 4 to 5psi. When started, it is standard for the pressure of the tank to fall to 1psi (but should read less than 3.5psi.) text/html 2026-04-18T09:00:15+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=engine:distributor&rev=1776502815&do=diff Electronic Ignition Lotus P.B.C. Inc. makes a distributor-less ignition system for the pre-HCI cars text/html 2026-04-17T06:17:39+00:00 Anonymous (anonymous@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?id=brakes:rebuilding&rev=1776406659&do=diff I recently rebuild the calipers on my '83 Esprit. The process is fairly simple, but will take a couple hours to complete. The rebuild kit consists of 4 rubber seals, 4 rubber dust shields and 4 retaining rings. * Remove calipers from car * Drain brake fluid from calipers by opening bleeder valves. text/html 2021-12-23T01:49:38+00:00 driestone (driestone@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?image=engine%3Ascreen_shot_2021-12-22_at_8.49.00_pm.png&ns=engine&rev=1640224178&tab_details=history&mediado=diff&do=media <img src="http://esprit.driestone.com/wiki/lib/exe/fetch.php?w=500&h=361&t=1640224178&amp;tok=918326&amp;media=engine:screen_shot_2021-12-22_at_8.49.00_pm.png" alt="engine:screen_shot_2021-12-22_at_8.49.00_pm.png" /> text/html 2021-12-22T23:42:38+00:00 driestone (driestone@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?image=engine%3Ascreen_shot_2021-12-22_at_6.42.00_pm.png&ns=engine&rev=1640216558&tab_details=history&mediado=diff&do=media <img src="http://esprit.driestone.com/wiki/lib/exe/fetch.php?w=500&h=391&t=1640216558&amp;tok=c60448&amp;media=engine:screen_shot_2021-12-22_at_6.42.00_pm.png" alt="engine:screen_shot_2021-12-22_at_6.42.00_pm.png" /> text/html 2021-12-22T02:57:45+00:00 driestone (driestone@undisclosed.example.com) http://esprit.driestone.com/wiki/doku.php?image=engine%3Ascreen_shot_2021-12-21_at_9.38.54_pm.png&ns=engine&rev=1640141865&tab_details=history&mediado=diff&do=media <img src="http://esprit.driestone.com/wiki/lib/exe/fetch.php?w=500&h=378&t=1640141865&amp;tok=468117&amp;media=engine:screen_shot_2021-12-21_at_9.38.54_pm.png" alt="engine:screen_shot_2021-12-21_at_9.38.54_pm.png" />