The Lotus Cars Community banner

141 - 160 of 183 Posts

·
Integrator
Joined
·
2,764 Posts
Let me throw this out there, please tell me if I'm in the ballpark.

I have Spax shocks and want to replace the stock springs.

I run the car normally with stock wheels, I have Proxes4s (245/50-16) on the rear and R1Rs (225/45-15) on the front. The fronts are stickier to mitigate understeer and I'm pretty happy with the balance.

There's way too much body roll with the current setup and I can't get the front down as low as I want. I do like the ride quality for normal street driving and want to avoid an overly harsh ride.

Next year I plan on tracking the car. I have a set of Ronal 17/18 wheels that I may put R-comps on for track days.

I'm thinking Eibach springs, 2.5" ID, 12"-275lb/in Front and 12"-300lb/in Rear. Does this sound about right?
Pete,

I'm curious... how did it work for you? Any observations to share w/ us?
 

·
Registered
Joined
·
4,869 Posts
Gaz-Matic shocks come with upper spring support "hats", which rest on the bottom face of the shaft rubber mount. If you replace OE springs w/2.5"ID coil-overs, if used with "hats", you don't need any isolators.
But (!) you're losing 1.5" of the spring length.
Are those meant for the Esprit? Those spring cone adapters for 2.5" springs look like they don't allow the chassis to take the load of the spring... the problem with that is the bushings at the top of the shock will be responsible for all of the load to the springs... This is not good. For the Esprit you really need a 2.5" spring perch adapter that allows the chassis to take the load from the spring as it was intended.



an adapter like this is what the Esprit requires.


 

·
Integrator
Joined
·
2,764 Posts

·
Registered
Joined
·
195 Posts
Polybushed top mount into the stock flange. 2 1/4 springs on adjustables.
AVOs ( had two leak over the past few years) 350 pound in rear, 300 in the front.
 

·
Registered
Joined
·
332 Posts
Bilstein option

`I have been watching Ebay like a vulture and was able to get a pair of the Bilstein's for the rear for $105 shipped! I will buy the coilover conversion kit after the shocks arrive and I measure the length of the tube. I believe I will need a kit with the 5 inch long threaded tubes. coilover conversion kits for Bilstein can be had for $37 plus 16 shipping for each shock. I am finding springs for $20 each. It looks like the rear springs will be 12 inches long and 2.5 inch ID.

I was also able to find out what is on my car now. The springs are marked KW 70-250. I called KW and they said my rear springs are 400 pound linear rate springs! No wonder it is rock hard! KW suggested 200# front and 220# rear. They said upping the rear a little over the front will reduce understeer and make the car handle more nuetral. Thoughts?

It looks like the completed rear setup will cost a total of $252. I should be able to do the fronts for about the same. If I end up with a complete setup for the car for around $500 I will be very pleased. If the valving needs work, there are plenty of race shops that can re-valve a Bilstein for me.

UPDATE:

Just found and bought a great coilover conversion kit made for Bilstein shocks. Cost for a pair was $87.53 shipped, with springs, I am now down to $232.53 for a complete rear set up.

Latest update: Just worked a deal for springs at only $10.00 each! They are from Nascar Driver Dave Blaney's son's race car. They are getting out of the class they are in and selling everything. they have a huge stockpile of spare parts new and used. I bought what I needed for all four shocks for $40 plus $20 shipping. I now have bought everything I need to complete two rear coilover Bilstein shocks for $222.53 and already purchased the springs for the front. The fronts will need another pair of coilover kits for 87.53 plus shocks that I can buy new on Ebay at any time for $150 a pair. If I don't find a better deal for the front shocks, the fronts will end up costing 267.53 which comes to only $490 for all four shocks!!

Hello,

I have a couple of questions on the lower cost Bilstein upgrade:

Will the Bilstein shocks & coil-over kit fit the '90 Esprit SE?

Will I have to replace my springs with a coil-over kit for Bilstein?

Is there a part number for the coil-over kit specific to the Lotus Esprit?
 

·
Registered
Joined
·
332 Posts
Esprit SE/S4s shock absorbers

Yes
Yes
and Yes, If you want the "original" Bilstein combo, see part numbers here: Esprit Damper Programme 2006

You can buy Eibach springs on Amazon much cheaper.
SE OE spring rates: 166 lb/in front, 157 lb/in rear
Thanks for all of the information & the Bilstein shock absorber link Mr. D. I'm not familiar with Eibach springs. But thanks for the tip.
 

·
Registered
Joined
·
332 Posts
Lower cost Bilstein option for Lotus Esprit SE/S4s

This listing for a pair of rear shocks for the Esprit SE doesn't quite fit the "lower cost Bilstein option" thread's intent originally posted by LantanaTX.

Am I missing something? Secret handshake perhaps? :scratchhead:

Damper, Bilstein
Replaces A082D4174F. Sold as a Pair ONLY, Bilstein $1150.
 

·
Integrator
Joined
·
2,764 Posts
Did you miss the qualifier "If you want the "original" Bilstein combo"?

Now you know why Lotus Owners started looking for various lower cost options, LOL.

Start reading this thread from the post #1.
Thread is long, and "it is all there" ...
Several Members came up with creative alternatives. Pick whichever you like.
 

·
Integrator
Joined
·
2,764 Posts
This listing for a pair of rear shocks for the Esprit SE doesn't quite fit the "lower cost Bilstein option" thread's intent originally posted by LantanaTX.

Am I missing something? Secret handshake perhaps? :scratchhead:

Damper, Bilstein
Replaces A082D4174F. Sold as a Pair ONLY, Bilstein $1150.
Yes,

Looks like the prices almost doubled in the last 5 years. Dunno-wy...-eek-
 

·
Registered
Joined
·
332 Posts
Lotac Suspension

This listing for a pair of rear shocks for the Esprit SE doesn't quite fit the "lower cost"

Damper, Bilstein
Replaces A082D4174F. Sold as a Pair ONLY, Bilstein $1148.12

This is the 'adjusted' price for the SE. Reality sets in.

Total products (tax incl.) £2,183.48
Total shipping (tax excl.) £13.22
Tax £366.11
Total (tax incl.) £2,196.70
 

Attachments

·
Integrator
Joined
·
2,764 Posts
This listing for a pair of rear shocks for the Esprit SE doesn't quite fit the "lower cost"

Damper, Bilstein
Replaces A082D4174F. Sold as a Pair ONLY, Bilstein $1148.12

This is the 'adjusted' price for the SE. Reality sets in.

Total products (tax incl.) £2,183.48
Total shipping (tax excl.) £13.22
Tax £366.11
Total (tax incl.) £2,196.70
We in US are not a subject to VAT tax, so take 366.11 off!

Have you tried contacting Gaz Matic?
https://www.gazshocks.com/products/dampers#gazmonotube
.
 
141 - 160 of 183 Posts
Top