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  1. COMP461

    High boost , High Temp TMAP and interest

    In working with the NIRA we have found that the factory sensors leave a lot to be desired Replacing the MAP sensors was easy , but in MAT sensor finding one that will go high then 150 C ( 305). Not a problem when your running a intercooler. The problem is this sensor is fairly slow to react...
  2. COMP461

    D/DT engine build

    I have been ask to participate in the engineering on a 5 liter Duramax. Looks like we will be using a stock block and adjusting the displacement . I designed the current record holder in Project X diesel with extreme destroking to a 5.0 liter . That motor did not lose any power just moved it...
  3. COMP461

    NHRA IHRA Stock Elimanator GT Engine spec for DRAG RACING A DIESEL

    I bet that no thread has been moved in years and no thread has been deleted I thought some of you might what some input in to a rule that once set in stone will not change . I am picking the motor and the HP ratting unless some one might have a better year and model . So Ill give you...
  4. COMP461

    New Progressive Nitorus controler for DRAG RACING

    I have laid out the flow chart for a new single stage progressive nitrous controller . This controller will have a boost sensor and the ability to work off of TPS It will have the ability to start at a given boost and percentage or total nitrous flow, and go to 100% at a given boost...
  5. COMP461

    Data Loggers

    One of the most important tools in any high performance applications in a Data Logger. just one of two examples in the diesel world I run an EGT on every cylinder . You have a injector starting to go down. How do you know other then a loss of power. what can a bad injector do I...
  6. COMP461

    need a IT guys help on a winsows table in race car

    The Nira uses a Cambus convertor in to a windows computer to do everything. I have a tablet that we leave in the car a Dell Venue. The convertor sucks a lot of power out of the tablet. The tablet only has one micro USB and no way to charge and take data.
  7. COMP461

    Nitorus and the diesel

    This thread will be tech and for people to share information and idea for using nitrous in drag racing. First do not take this a bragging because my piston melting ability speak for itself, but its is to set my credentials in nitrous burning ability. Ten years ago I started working with...
  8. COMP461

    4.67 @ 164.71 1/8 mile Time slip .

    ok went and cleaned out the trailer and found the time slip from the NHRA Div 4 event a few months ago . This pass was far from perfect , and not running much nitrous. I did not push the car past the 1/8 mile , we wanted to get a good amount of data so as not to hurt a motor. The next 2...
  9. COMP461

    Pistons design and Ring packages for the Duramax

    Piston design and Ring packages for the Duramax The Diesel piston design for high performance engines and stock style engine are as far apart as a stock gas piston and all-out lite weight race piston. Each piston design should reflect the intended use. Some of the factors include RPM...
  10. COMP461

    Dry Sump for the Duramax.

    I started this thread to show the Dmax with a dry sump, Ill point anyone to get good Autoverti pumps for 100 cents on the dollar I have always had Dry sumps on my diesel engines because they give better control of oil , It keeps the blow by from blowing oil out of every seam because I have...
  11. COMP461

    Timed ( Toothed Belts) CP3 Pumps and the reasoning behind this

    I have decided to give more information on some of the projects I am doing that might give a little info back I have been working with Gates on the GT3 and PolyChain belts to drive the CP3 Pumps. I underdrive my pumps because of the rpm range I run my motors. The reason for the positive...
  12. COMP461

    Dynoing the Nira ECM

    been on the dyno for the last few days the motor made 1000 hp before the idler pulley started tossing belts , the motor come alive hard about 3000 and rips to 4700 then the belt let loose each time. this motor will rip to 6000+ rpms with easy These are fuel only pulls with a tune designed...
  13. COMP461

    Duramax to Race with PDRA 2015

    We are confident we will have a good showing the car has run a best of 4.71 @ 141 1/8 mile with a horrible 1.171 60 foot , the car has run a best of a 1.08 60 ft We lost a head gasket 3.89 seconds in to that run . with 1/8 mile gearing we expect 60 ft to me 1 flat or better. We have...
  14. COMP461

    I will be on Autoworld / Motortrend radio today

    I will be on Autoworld / Motortrend radio today I will be representing the diesel community on Bob Long's Autoworld / Motortrend radio tomorrow at noon eastern time. I do several shows during the year talking about the future of diesel powered cars and truck. This will be my third year...
  15. COMP461

    NHRA tech and the Dmax injector fuel return line.

    NADM has hired a NHRA divisional Tech official as their new Tech director. I like the way he techs, and doesn’t just bounce you for something wrong, but ask you to work towards becoming NHRA compliant. I asked him to tech my car as hard as possible towards the rules, because I want no...
  16. COMP461

    Brodix cylinder heads for the Duramax

    Well the Duramax has go a shot in the arm. Brodix in conjunction with Wagler performance has come out with a performance head for the Duramax flow is 30 to 40 CFM better then the best ported head as cast. Edelbrock is about 4 months out on their version of the Dmax head. I can now see a...
  17. COMP461

    Lbz pin for tach output for shifter and datalogger

    I have heard it the 37 pin on LMM but I need the ECM pin number to run my shifter and data logger input
  18. COMP461

    G.M. Performance Parts Duramax Diesel Top Dragster final prep for testing

    thanks to Industrial Injection services ZZ custom Fabrication D & L performance Charlie Stewart Race Cars Syndiesel ChevyLand.com GearVendors Nitrous Outlet Frankenstein racing heads RPM performance Data Loggers Al Weiss Stan and Mathew Thomas J E Pistons GRP Rods Coan...
  19. COMP461

    Custom lines hard or flexible

    I am finishing up the pump feed lines on the G.M. Performance Parts Dmax dragster , and I want to go from one pump to the other to balance the rails . I have the 22 inch flexible lines from Industrial Injection. I am driving the pumps at 50% speed to keep them from exploding after a 6000 ramp...
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