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Posts posted by plumdeplakmuis

  1. Time for the Esprit GT3 to become more GT3ish.


    First more power... new turbo setup, second get a GT3 interior as this was fitted with V8 seats and steering wheel. Third general other upgrades suspension brakes etc.. 


    Starting with more power, and getting rid of the quad exhaust in the process.

    Plan is to fit a new turbo, increasing max compressor flow from 0.18 m3/sec to 0.23 m3/sec.

    New turbo has integrated by-pass valve, and should give better transient through better turbine efficiency. And hope it will fit without to many modifications.


    The as replacement for the exhaust, we consider a fabricated system, still need to select the cat and the damper.


    Original car


    Time to get rid of the quad exhaust

  2. Hi Cam, 


    Just starting to upgrade the GT3, and create a new turbo set for approx 300hp, among other things needed to make the GT3 more GT3ish


    Base of the set i will be using is the MHI TD04HL, with 58mm compressor, 

    With only minor modifications the turbine-in should be made fit to the manifold, as the MHI unit is very close to a T3 shape flange. Also I much prefer OEM wheels and components over aftermarket stuff, as the OEM aero from new generations is way more efficient than the tuners stuff. (TD04HL 58mm around 77% peak efficiency)


    Compressor is also straight forward with integrated by-pass valve, 

    I will start a new topic in project and restoration room and show some pics of the possible turbo setup. 


    Would like to hear your approach on the calibration, as I'm not sure which route I will take. 




  3. Great presentations.


    Should Lotus not go lower power (lower emissions) lower vehicle weight again.

    Making something as good as the F488, MP4-12C, 911 will cost heaps of money and a

    bougt in V8 will never allow the level of sophistication these cars have.

    Even looking at the presentation the Esprit was planned to have a lower power to weight ratio than the first MP4-12C.

    Which in it's current trim with 675hp makes it even worse.


    Make sub 1000 kg cars again, And if possible a derivative called the Esprit with some nice

    weekend GT practicality. On the engine, there are some nice 350hp 4cyl engines available with dual clutch and everything.

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  4. My S2.2 is originally A06 Bermuda Blue

    Painted gun metal grey years ago. Still you can see some small spots of the original colour behind trim.

    It looks like that it is the same color as the car pictured above.

    Also never have ssen a picture of a complete car in Bermuda Blue. I would love to see it though as maybe when I go for a respray will convert it back to original.

  5. Here it goes, 


    As a long time Esprit enthusiast and now owner of a turbocharger engineering and production company, it seems only logical to get a turbocharged Esprit. 


    So far got my dream Esprit S2.2 in 2008. and enjoyed it since then. 

    As much as I like the looks and spirit of the S2.2, besides it is not turbocharged its getting slow. 

    Especially now as I traded my daily driver for a Volvo 850R, it just doesn't seem right to have my old boxy daily being faster than the sportscar. Even when understanding the S2.2 is 16 years older.


    So now I have several options, 

    - Improve the S2.2, and make it a bit like a restomod, getting a turbocharged engine for it, with additional upgrades for the suspension etc...

    Problem is that already the rear tires can't cope with the little power thats there, and the bodywork gets terribly rattly above 160 km/h. Also modifying a perfectly original S2.2 is a bit against my religion. 


    - Get a fair priced SE, and make it a bit more hardcore, looking like the Chamberlain Sport 300.

    Even make it capable for trackdays, but still capable of the European grand tour. 

    This gives the opportunity to go all the way with installing our own designed turbocharger. Even using it as a testbed. (350hp from a 2ltr is very 2015)

    Only seems like a big project. Together with running a business i'm not sure its realistic time wise. 


    - Get a GT3, only do some easy std upgrades. And our own developed turbocharger,

    Gives the opportunity to enjoy the car from day 1. Not so sure as a possible trackday runner. And not feeling comfortable to modify a GT3 to much. 


    Any thoughts and considerations welcome. 

  6. As I think you are after 350 - 360 hp, a suggestion for your turbo:


    Size is 62mm compressor which should be spot on for this HP. (Advertised over 450hp is too optimistic)

    And has latest turbine geometry in it which helps spoolup, together with the Tial turbine rotor.

    Relatively high compressor efficency keeps comp outlet low. 

    Should also be fairly easy to adapt to the car, 

  7. Be carefull with oil spilling on the exhaust wrap from the cam covers.

    On a streetcar i think exhaust wrap on the header is a bit risky, as the oil buildup can make for a nice torch.


    I think for a streetcar coating or shielding is a better solution.

    Regarding the temperatures of the manifold. Depending on the kind of tainless,

    high nickel Austenetic stainles should be able to withstand the red hot situation continuously. (950 degC max)

    With mild steel you need to be a bit more carefull although i'm not sure of the EGT on a carburetted engine.

  8. Hi Wayne, 


    It seems that WC is rebuilding the original unit with much larger internals. 

    Looking at the flow he is creating it looks like he uses ~68mm compressor wheel or larger. 

    Getting this in the original internals is not doing the efficiency any right. 

    With efficiency being directly responsible for response behavior, 

    Depending on the power you are after get a unit that is more modern and sized just right. 

    This gives you better response than the WC unit. 

    What power are you after?

  9. I'm not sure which tire size goes on a 15" rim, I guess that would be 65 or 60 height. Anyhow in 15" there is plenty available.

    I do both like the compomotives and the Image wheels. But still like the speedlines beter.


    So i'm going for some research to check what is required to make a new speedline in 15". First scan the current wheels

    and get a design in 3D. After that I'm not sure which methode to select for production.

  10. Now that the tires for the Esprit S1 and S2 are getting very scrace. It's time to rethink the wheels again.


    As I do love the original look of the speedlines and wolfrace, I wonder what other "classic" look alternatives are there

    that won't disturb the looks. (I like the compomotive look, but are these available?)


    Is there already a Wolfrace / slotmag set available in 15" ?

    Or should I try to get the original speedline design made in 15"?

    (Maybe can be done as a 2 split rim based on a imagewheels.outer rim, and a custom billet remake of the center)


    If so, are there more guy's interested to get a enlarged speedline made. And shhoudl it be 15"or 16"

    I think 15"would be enough.

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