S4s,S4,SE UPDATES & IMPROVEMENTS
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Esprit Rear Hub Lower Link Stud Removal
Here is a great article on this subject: Esprit Hub Carriers
Just want to add a couple observations.
Before hacking through the hard alloy (!) stud and ruining your hub, you may try this trick..
Beware of using WD40 which is totally ineffective for this application.
Instead, mix the following oils in equal amounts: Marvel Mystery Oil, ATF, Power Steering Fluid, Oil of Evergreen and 1 ml of Shaklee Basic-H surfactant.
Mix a small amount of this potion with Acetone, 50/50, and apply with an eyedropper to both ends and the middle section of the stud, as well as the split spacer bushing crack. Repeat this application several times a day for 2 days. On the 3-rd day, place a stack of thick washers, with I.D. hole larger than the split spacer OD. Washers have to rest on the hub. Do not attempt to separate the stud from the bushing at this time. Install a 1/2 UNF, grade 8 nut and apply a brute force to the nut using impact gun. You may be able to pull out the stud together with the split spacer bushing. As it is coming out, use more washers and a large socket as spacers.
Over 25 years the stud fused permanently to the split spacer and it is impossible to separate them.
New stud, split spacer and copious amount of Ni-Graphite anti-seize are required to complete the project.
Here is a great article on this subject: Esprit Hub Carriers
Just want to add a couple observations.
Before hacking through the hard alloy (!) stud and ruining your hub, you may try this trick..
Beware of using WD40 which is totally ineffective for this application.
Instead, mix the following oils in equal amounts: Marvel Mystery Oil, ATF, Power Steering Fluid, Oil of Evergreen and 1 ml of Shaklee Basic-H surfactant.
Mix a small amount of this potion with Acetone, 50/50, and apply with an eyedropper to both ends and the middle section of the stud, as well as the split spacer bushing crack. Repeat this application several times a day for 2 days. On the 3-rd day, place a stack of thick washers, with I.D. hole larger than the split spacer OD. Washers have to rest on the hub. Do not attempt to separate the stud from the bushing at this time. Install a 1/2 UNF, grade 8 nut and apply a brute force to the nut using impact gun. You may be able to pull out the stud together with the split spacer bushing. As it is coming out, use more washers and a large socket as spacers.
Over 25 years the stud fused permanently to the split spacer and it is impossible to separate them.
New stud, split spacer and copious amount of Ni-Graphite anti-seize are required to complete the project.
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Heaven forbid that it would happen but if the hub carrier casting was cracked do you think it could be TIG weld repaired?
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No, I would not recommend such repair. It is a safety item. In such case the hub must be replaced.
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Esprit A/C belt replacement
A/C belt replacement on our cars is pretty involving (if done in-situ). Pivot point nut access is easy, but the adjustment nut is PITA to access.
10" long 3/8" thin shaft extension and a magnetic socket saves the day.
Tim is right, it is easier to cut the belt. Saves a ton of effort and frustration. Use Kevlar 1/2 x 32" belt as a replacement, it will last a long time and does not stretch much.
Beware: belts may vary in length, all depends on manufacturer (differences in tolerances country to country, etc?)
A/C belt replacement on our cars is pretty involving (if done in-situ). Pivot point nut access is easy, but the adjustment nut is PITA to access.
10" long 3/8" thin shaft extension and a magnetic socket saves the day.
Tim is right, it is easier to cut the belt. Saves a ton of effort and frustration. Use Kevlar 1/2 x 32" belt as a replacement, it will last a long time and does not stretch much.
Beware: belts may vary in length, all depends on manufacturer (differences in tolerances country to country, etc?)
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POWER STEERING/VACUUM PUMP BOLTS REPLACEMENT
To access bolts A & B, the left engine support vertical heat shield has to be removed.
Next, use a 6 mm Allen tip socket to loosen bolts A and B. To avoid the head stripping, do not use "ball end " Allen tips. Bolt B can be accessed from the rear using an 8" long thin shaft 3/8" extension held parallel to the exhaust header bottom.
Bolt C is a nightmare. To gain access to this one, the pump pulley has to be removed (4 x 10 mm hex head bolts).
To facilitate the v-belt tension adjustment and avoid pulley removal in the future, replace Allen head bolts A,B,C,D with an undersized 11 mm or 12 mm hex head bolts, which can be easily turned with modified (ground thin) ring spanner.
To access bolts A & B, the left engine support vertical heat shield has to be removed.
Next, use a 6 mm Allen tip socket to loosen bolts A and B. To avoid the head stripping, do not use "ball end " Allen tips. Bolt B can be accessed from the rear using an 8" long thin shaft 3/8" extension held parallel to the exhaust header bottom.
Bolt C is a nightmare. To gain access to this one, the pump pulley has to be removed (4 x 10 mm hex head bolts).
To facilitate the v-belt tension adjustment and avoid pulley removal in the future, replace Allen head bolts A,B,C,D with an undersized 11 mm or 12 mm hex head bolts, which can be easily turned with modified (ground thin) ring spanner.
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That is really interesting. The Caterhams handling must be something. Are they even sold here in the US? Answered my question - they are - interesting the pictures of the car at the dealer do not have the rocker arm front suspension.
I was a little surprised the driver reviews were not more glowing. Maybe the old car handled great too.
I was a little surprised the driver reviews were not more glowing. Maybe the old car handled great too.
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Delco-Moraine PowerMaster-3 ABS brake system maintenance
ABS system on Esprits has a bad rap, but do you remember when did you service it last time?
Brake fluid is hygroscopic and absorbs moisture from the air, even if not used. Anything higher than 2% water content asks for a change. 4% is not acceptable in our cars.
You should make it a habit to purge at least the pump and reservoir annually. Full bleeding job is recommended, if you want to have a well functioning system.
First, install Speed Bleeders at all 4 calipers. They make bleeding brakes one person job! http://speedbleeder.com/
Lift the rear and take the wheels off.
Siphon off old fluid from the reservoir and re-fill with Pentosin Super Dot 4 fresh fluid. Replace the cover tightly. Do NOT touch the brake pedal at this time.
Install a piece of translucent PVC hose over the Speed Bleeder nipple at the right rear caliper and keep the other end inside a small transparent container to catch dirty fluid.
Turn on the ignition key and listen to the pump pressurizing the system. When it stops, turn off the ignition key.
! DO NOT touch the brake pedal, yet!
Get out of the car and open the Speed Bleeder valve by 1/2-3/4 turn.
Depress brake pedal 3 times all the way to the floor. White "milky" fluid will drain into container. That is your ABS pump fluid with suspended water droplets. Repeat until clean fluid starts coming out of the bleeder. Close tight the Speed bleeder.
Switch your attention to the left rear caliper and follow the same procedure.
WARNING: You can depress the pedal only 5-6 times without running out of fluid, so don't forget to replenish it periodically.
Add fluid to the reservoir and continue bleeding the front.
Repeat this procedure every 12-15 months.
Best buy:
Large 5 liter container of Pentosin Super Dot 4 at Advanced Auto Parts, Part # 1204204
.
.
ABS system on Esprits has a bad rap, but do you remember when did you service it last time?
Brake fluid is hygroscopic and absorbs moisture from the air, even if not used. Anything higher than 2% water content asks for a change. 4% is not acceptable in our cars.
You should make it a habit to purge at least the pump and reservoir annually. Full bleeding job is recommended, if you want to have a well functioning system.
First, install Speed Bleeders at all 4 calipers. They make bleeding brakes one person job! http://speedbleeder.com/
Lift the rear and take the wheels off.
Siphon off old fluid from the reservoir and re-fill with Pentosin Super Dot 4 fresh fluid. Replace the cover tightly. Do NOT touch the brake pedal at this time.
Install a piece of translucent PVC hose over the Speed Bleeder nipple at the right rear caliper and keep the other end inside a small transparent container to catch dirty fluid.
Turn on the ignition key and listen to the pump pressurizing the system. When it stops, turn off the ignition key.
! DO NOT touch the brake pedal, yet!
Get out of the car and open the Speed Bleeder valve by 1/2-3/4 turn.
Depress brake pedal 3 times all the way to the floor. White "milky" fluid will drain into container. That is your ABS pump fluid with suspended water droplets. Repeat until clean fluid starts coming out of the bleeder. Close tight the Speed bleeder.
Switch your attention to the left rear caliper and follow the same procedure.
WARNING: You can depress the pedal only 5-6 times without running out of fluid, so don't forget to replenish it periodically.
Add fluid to the reservoir and continue bleeding the front.
Repeat this procedure every 12-15 months.
Best buy:
Large 5 liter container of Pentosin Super Dot 4 at Advanced Auto Parts, Part # 1204204
.
.
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3,251 Posts
I use those http://www.speedbleeder.com/size.htm
Rear Brembo single piston calipers have M10x1.0mm thread, (SB1010 or SB1010S, check the length of your OE bleeder screws)
"S" indicates stainless part
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what is the size for the front caliper?
I have an 03.5 Do the sizes of the bleeder screw vary by generation?
Can I assume you mean for your S4s? and if so, what size did you use for the front Brembos?
-Rich
'95 S4s ...SHF63000
'79 JPS #040
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Rich,
It's been a while...
I think (?) they were Speed Bleeders PN# SB1010 or Russell 639560 (Amazon)
I have sold my Brembos and replaced w/AP racing CP5200 calipers, which use SB1010 also.
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I've got some on my Brembos. I will dig around for the packaging when I'm home.
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FYI:
SAE paper on our 4 cyl engine.
SAE paper on our 4 cyl engine.
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3,251 Posts
FYI, S4s specs sheets,
except:
Power output numbers are mistakenly copied from S4 spec sheet, not S4S...
www.carfolio.com
except:
Power output numbers are mistakenly copied from S4 spec sheet, not S4S...
1995 Lotus Esprit S4S specifications | technical data | performance | fuel economy | emissions | dimensions | horsepower | torque | weight
1995 Lotus Esprit S4S: The Lotus Esprit S4S is a 2 door coupé-bodied car with a mid located engine powering the rear wheels. It is powered by a turbocharged engine of 2.2 litre capacity. This unit features double overhead camshaft valve gear, 4 cylinder layout, and 4 valves per cylinder. It...
www.carfolio.com
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3,251 Posts
OILS for LOTUS ESPRIT (VINTAGE) ENGINES
I called Mobil One's tech line today. They don't recommend using Mobil
One V-Twin. That oil is formulated for air cooled engines with friction
modifiers for use with clutches that run in oil. Also, Harleys have
ball or roller main bearings not babbit bearings, like our cars.
They recommended using Mobil One 15W50 which has 1300ppm of zinc and
1200 ppm of phosphorus plus the corrosion inhibitors desirable in a
water cooled engine. They told me it's available in 5 quart jugs that
are cheaper than the per quart pricing of Mobil V-Twin.
At Walmart it goes for $27.42 per 5 quart bottle, whereas Amazon is
charging over $47.00. Napa is selling 1 quart bottles for $5.99.
Mobil 1 Advanced Full Synthetic Motor Oil 15W-50, 5 Quart - Walmart.com
I just checked Redline and their performance synthetic oil I've been
using. They also claim a 1200 ppm of zinc and phosphorus plus 600 ppm of
molybdenum, but it costs twice what Mobil one does.
I called Mobil One's tech line today. They don't recommend using Mobil
One V-Twin. That oil is formulated for air cooled engines with friction
modifiers for use with clutches that run in oil. Also, Harleys have
ball or roller main bearings not babbit bearings, like our cars.
They recommended using Mobil One 15W50 which has 1300ppm of zinc and
1200 ppm of phosphorus plus the corrosion inhibitors desirable in a
water cooled engine. They told me it's available in 5 quart jugs that
are cheaper than the per quart pricing of Mobil V-Twin.
At Walmart it goes for $27.42 per 5 quart bottle, whereas Amazon is
charging over $47.00. Napa is selling 1 quart bottles for $5.99.
Mobil 1 Advanced Full Synthetic Motor Oil 15W-50, 5 Quart - Walmart.com
I just checked Redline and their performance synthetic oil I've been
using. They also claim a 1200 ppm of zinc and phosphorus plus 600 ppm of
molybdenum, but it costs twice what Mobil one does.
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