S4s,S4,SE UPDATES & IMPROVEMENTS - Page 6 - LotusTalk - The Lotus Cars Community
 40Likes
Reply
 
LinkBack Thread Tools Display Modes
post #101 of 157 (permalink) Old 06-20-2018, 07:19 PM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
Mechanical Boost Gauge

After my Caerbont gauge tried to play "hide and seek" with me, I decided to install a VDO vacuum/boost gauge.
With this new gauge in place, I took a couple of spirited runs and noticed that the needle never reached 1Bar.
No, no, no, I'm not complaining.
I'm just amazed at how capable S4s engine is! I had plenty of right foot travel left!
Just wondering, what would happen if I completely floor it...
Attached Images
   

Last edited by MRDANGERUS; 06-21-2018 at 05:29 AM.
MRDANGERUS is offline  
Sponsored Links
Advertisement
 
post #102 of 157 (permalink) Old 06-21-2018, 03:03 AM
Registered User
 
DaveS4s's Avatar
 
Join Date: Apr 2014
Location: Newnan, Ga.
Posts: 276
You have to pick a good spot to floor it , otherwise Blue Flashing Lights pop up behind you. LOL
DaveS4s is offline  
post #103 of 157 (permalink) Old 06-21-2018, 08:31 PM
S4s
 
Seraph's Avatar
 
Join Date: Jan 2015
Location: Castle Rock, CO USA
Posts: 627
Garage
The previous owner relocated the emergency brake to a more accessible position and out of the way for the ingress/egress of the vehicle. He re-fiberglassed the old hole.
Attached Images
       

Jim S.
1995 Esprit S4s
Seraph is offline  
 
post #104 of 157 (permalink) Old 06-22-2018, 07:07 PM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
MRDANGERUS is offline  
post #105 of 157 (permalink) Old 06-22-2018, 07:39 PM
S4s
 
Seraph's Avatar
 
Join Date: Jan 2015
Location: Castle Rock, CO USA
Posts: 627
Garage
I can't imagine how awkward it must be for regular owners to start up a hill, be bent over to work the parking brake, while steering and working the pedals. Maybe there was some safety concern about easily getting access to it between the seat and door.

Jim S.
1995 Esprit S4s
Seraph is offline  
post #106 of 157 (permalink) Old 07-25-2018, 08:50 PM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
Nice exhaust fabrication.
~ 20lbs weight savings and unobstructed flow. Looks like John have used 4" dia x 14" Magnaflow muffler. For more info, go to:

Esprit Owners
.

Last edited by MRDANGERUS; 08-13-2018 at 05:54 AM.
MRDANGERUS is offline  
post #107 of 157 (permalink) Old 07-26-2018, 04:13 PM
Registered User
 
Join Date: Aug 2007
Location: Atlanta
Posts: 256
Garage
Thats has got to be loud

I have seen that car several times and it is well kept and John is a super nice guy and will spend lots of time showing you around his car.

Might be nice to bolt on for track days and then go back to something a bit more muffled for driving around
Erik L is offline  
post #108 of 157 (permalink) Old 07-26-2018, 04:40 PM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
You can enjoy it here:

I agree, this is not a system for your granny's Buick, LOL.
For the purpose of an academic discussion: installing a larger muffler, like 18" body and/or 6" dia would make the note much lower and perhaps quieter.
Also, it would add about 5 lb.
Great chance, that 6" muffler may be sticking out below the air foil.

Last edited by MRDANGERUS; 07-26-2018 at 07:06 PM.
MRDANGERUS is offline  
post #109 of 157 (permalink) Old 07-26-2018, 06:21 PM
Registered User
 
Join Date: Aug 2007
Location: Atlanta
Posts: 256
Garage
I wonder of one of these removable baffles would work well on the Lotus Turbo 4?

Some folks said they worked well on air cooled Porsches - some did not have good results.

https://www.google.com/imgres?imgurl...act=mrc&uact=8
Erik L is offline  
post #110 of 157 (permalink) Old 08-13-2018, 05:01 AM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
Light weight performance exhaust

Finally, I did it and I'm very happy. Removed some dead weight, improved flow and sound note.
Only 13 lbs (vs 33 lbs OE).
Note: Nuts at the turbo flange were... 11/32" and not 17mm !

This is 2.5" system, like OEM, but David Vizard says the 3" would be more appropriate for the 910 turbo.
IMO, 3" systemt could be easily fabricated of the bits from eBay and Amazon.
FYI: Magnaflow 3" in/out polished muffler number PN# 14619.
HEDMAN 21156 3in Ball & Socket
Attached Images
         

Last edited by MRDANGERUS; 08-13-2018 at 06:08 AM.
MRDANGERUS is offline  
post #111 of 157 (permalink) Old 08-13-2018, 06:25 AM
Registered User
 
Join Date: Aug 2007
Location: Atlanta
Posts: 256
Garage
Wow that looks very well made and worthy of the brand and car.

Did you do the welding your self?
Erik L is offline  
post #112 of 157 (permalink) Old 08-13-2018, 08:25 AM
Registered User
 
esprit888's Avatar
 
Join Date: Mar 2011
Location: Lotus land,BC, Canada
Posts: 983
The exhaust looks identical (in form and quality) to the Micklewright batch that Players Forsythe made up. I would recommend either a heat shield or material as it sits a lot closer to the rear bumper and the exit end of the muffler gets VERY hot and can melt things in a hurry (ask me how i know )
esprit888 is online now  
post #113 of 157 (permalink) Old 08-19-2018, 05:47 AM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
Quote:
Originally Posted by esprit888 View Post
The exhaust looks identical (in form and quality) to the Micklewright batch that Players Forsythe made up. I would recommend either a heat shield or material as it sits a lot closer to the rear bumper and the exit end of the muffler gets VERY hot and can melt things in a hurry (ask me how i know )
It is, indeed! Only 30 made.
Have you attached it to the OE CAT or CAT-delete pipe? Makes difference in temps at the muffler.
.
MRDANGERUS is offline  
post #114 of 157 (permalink) Old 08-19-2018, 06:40 AM
Registered User
 
Join Date: Aug 2007
Location: Atlanta
Posts: 256
Garage
can one of these be purchased? How much$$

Mr. D can you post a vid of the sound?
Erik L is offline  
post #115 of 157 (permalink) Old 08-19-2018, 07:05 AM
Wingless Wonder
 
carbuff's Avatar
 
Join Date: Jun 2004
Location: In the Back of your Mind
Posts: 5,243
Garage
@Sanj had the Magnaflow part number....

Regards the sound, we fitted the Micklewright system to yellow hornet's car a decade (and three computers) ago, and our Bosch car still sounded throatier than his de-catted S4s. (IMO of course.) Sorry, I can't find the comparison sound files.

The sound was a LOT nicer than stock, though. YH hasn't had any heat related issues that I know of...

Atwell Haines
'88 Esprit
Succasunna, NJ USA


"Not all angels have wings." - Turbo R
carbuff is online now  
post #116 of 157 (permalink) Old 08-19-2018, 12:05 PM
Registered User
 
esprit888's Avatar
 
Join Date: Mar 2011
Location: Lotus land,BC, Canada
Posts: 983
Quote:
Originally Posted by MRDANGERUS View Post
It is, indeed! Only 30 made.
Have you attached it to the OE CAT or CAT-delete pipe? Makes difference in temps at the muffler.
.
Good point, it was definitely caused by installing the cat delete pipe as there was no melting or warping prior to the 'upgrade'. It caused the lower section of the bumper directly above the muffler outlet to partially melt, and the black body paint above that to melt and drip on to the pipe. Its not visible from the rear, you have to lie underneath and look up, but it was scary enough to address it immediately. If you have a Micklewright and a cat delete pipe i would recommend going underneath for a safety check as other than the exhaust the car had no other performance mods.
esprit888 is online now  
post #117 of 157 (permalink) Old 08-25-2018, 06:58 PM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
Esprit rear brakes upgrade

I have assessed feasibility of installation of the EVORA S 4 pot rear brake calipers, A132J4023F & A132J4024F.
Required parts: outboard 1/2" wheel spacers to clear inside webs of the wheels, mounting brackets to attach calipers to the swing arm, high strength bolts, custom brake lines with banjo fittings.
Old, one piston calipers will function as an emergency brakes only.
Attached Images
       

Last edited by MRDANGERUS; 08-28-2018 at 06:47 AM.
MRDANGERUS is offline  
post #118 of 157 (permalink) Old 08-27-2018, 02:16 PM
Registered User
 
Join Date: Feb 2014
Location: Seattle, Washington
Posts: 260
Dangerous, good looking upgrade on the rear braking.

Is the 1/2 spacer needed so that the (leading) caliper clears the swing arm on the inboard side?

Any thoughts on brake balance? Guessing the 4-pot has much greater piston area than the stock caliper. Maybe a brake bias valve upstream is also needed?
Beerman is offline  
post #119 of 157 (permalink) Old 08-27-2018, 04:31 PM
Dreaded Prior Owner
 
snowrx's Avatar
 
Join Date: Oct 2011
Location: Far from another Esprit.....
Posts: 581
Quote:
Originally Posted by Beerman View Post
Dangerous, good looking upgrade on the rear braking.
Dangerous and good looking? I thought that was the Bond G-cars!
snowrx is offline  
post #120 of 157 (permalink) Old 08-28-2018, 07:28 PM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
Quote:
Originally Posted by Beerman View Post
Dangerous, good looking upgrade on the rear braking.

Is the 1/2 spacer needed so that the (leading) caliper clears the swing arm on the inboard side?

Any thoughts on brake balance? Guessing the 4-pot has much greater piston area than the stock caliper. Maybe a brake bias valve upstream is also needed?
Thank you for your kind words.
No, the wheel spacer is required to bring the wheel out. It may be less than 1/2" for other wheels, but my Nova back side spokes slightly curve inboard at the barrel.
Since I have rather big AP racing calipers at the front, the balance has been naturally restored.
Attached Images
   
MRDANGERUS is offline  
Sponsored Links
Advertisement
 
Reply

  LotusTalk - The Lotus Cars Community > Lotus Discussions > Lotus Esprit

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the LotusTalk - The Lotus Cars Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome