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Thread: Upgrading my Noble

  1. #1
    Join Date
    Sep 2008
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    Default Upgrading my Noble

    After 24,000 miles my engine was a little worn - blowing a lot of smoke (ie burning oil) so I decided it is time for an upgrade.

    The engine started its life as a Durtec 3.0l but the custom build has transformed it to a 3.3L. Below is a summary of what was built (basically a totally blue printed engine):
    Bored out cylinder to get to 3.3
    New pistons Ceramic/moly coated
    New high strength rods
    Polish and balance crank
    Race bearings
    Upgraded oil pump (custom made)
    CNC the heads
    New time chain
    Fluid dampener pulley
    New valves and lifters and springs
    Cosmetic powder-coated engine
    Additional items that are outside the engine that I am doing:
    New custom made Turbos by Compturbo
    o CT2X Billet T2 turbo
    Changed the ECU out going with a AEM Infinity series
    o Changing location to inside (behind passengers seat)
    Add new sensors such items as
    o Dual boost control -Each turbo controlled separately
    o Dual knock sensors
    o Dual air intake sensors to allow determination of efficiency of intercooler
    o Wideband exhaust sensors
    o Rear wheel/axle speed sensor allow for launch control and traction control
    Upgraded fuel pump
    Upgraded injectors
    Upgraded fuel regulator
    New blow-off valve
    Upgraded radiator design (Floating instead of bolted to frame)

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  2. #2
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    Very interested in this, particularly the AEM Infinity ECU.

    Will have lots of questions.

    Ok, questions are starting already.

    Is this a street car, street/track, track toy.
    Which Infinity are you using? 5 series, 7 series?
    Last edited by doug_porsche; 06-28-2016 at 04:11 PM.

  3. #3
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    I am hoping to get the car up and running in about 1 month

    Street / Track car say 70/30
    Series 7 - model 708

    As for the engine here are some more details. Bore 3.535" with 3.38" stroke
    Diamond pistons 8.5:1 cr ceramic /moly
    K1 H beam forged rods arp 2000
    CNC heads Manley Inconel valves 1mm+
    ARP head studs & ARP main studs
    Beehive springs 270#
    Stage 2 billet custom oil pump - I think we are know how low the oil pressure is at idle so this should fix that issue.

  4. #4
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    Jun 2010
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    Who is performing the work on your car? Looks like clean work...

  5. #5
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    Dec 2013
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    Which injectors did you go with? Also it's somewhat troubling to me that our engines give up the ghost with less than 30k on them. Something tells me this won't be my first rebuild....

  6. #6
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    The entire project is being done by Stutttgart Automotive in Santa Monica
    Engine was done by Joey at Natutilus Perfromace Group
    The greatest mechanic that is overseeing everything is Mike
    here is a photo
    I get 2 partial cars for the price of 1 - LOL

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  7. #7
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    m54321, when you decided to do the rebuild, did you check compression or do a leakdown test? Engines often outlast turbos and Ive had several cars in the past that had bad turbo sales that caused smoke? Im just curious if you had taken the time to get some data about the state of the actual engine, and the turbos, separately?

    Like Darbid, I also find it troubling to see people rebuilding engines shy of 30k miles, tracked or not. I refuse to think the engine wont last that long, and wonder if it has more to do with tuning, or perhaps the engines are fine and people things they arent due to oil burning in the turbo seals...

  8. #8
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    I was hoping what you said but the engine was the issue. I did both leak down and compression tests. Both tests showed an issue. I than took the engine out and took it apart hoping for a minor rebuild but it showed that the cyclinder walls were damaged.

  9. #9
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    [QUOTE=jpwden;98230]m54321, when you decided to do the rebuild, did you check compression or do a leakdown test? Engines often outlast turbos and Ive had several cars in the past that had bad turbo sales that caused smoke? Im just curious if you had taken the time to get some data about the state of the actual engine, and the turbos, separately?

    Like Darbid, I also find it troubling to see people rebuilding engines shy of 30k miles, tracked or not. I refuse to think the engine wont last that long, and wonder if it has more to do with tuning, or perhaps the engines are fine and people things they arent due to oil burning in the turbo seals...[/QUOTE

    In the UK our engines were all new & given normal use are / have given good service, my understanding is that the US engines were essentially used engines remanufatured by AER which would explain why they are not giving you high mileage.

  10. #10
    Join Date
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    Great thread, will enjoy watching this progress. Do you recall what numbers you got for the leakdown/compression?

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