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Thread: Mechanical wastegate control

  1. #1
    Join Date
    Feb 2007
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    Baja California Sur Mexico
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    Default Mechanical wastegate control

    After experiments with different springs connected by fence wire to the front panel, I made this afternoon a permanent system. It as a parking brake return spring from something. The photos don't show it well, but has a lever so that the adjustment is up high to make it easy to adjust. If anyone wants a really good photo of it, I'll remove it to take the shot. I am trying to cancel this as the photos are too big will re take them tomorrow. Ok one was accepted.
    Attached Images Attached Images
    Grant H.
    1994 6.5 turbo GMC K2500 HD suburban "F" VIN FSD heat sync #9 resistor, PMD in the bumper, no cat, mechanical waste gate, 220,000 miles, 4L80E Positrac 3.73 diff, 17 mpg highway.
    1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, 21 years.

  2. #2
    Join Date
    Dec 2006
    Location
    Edmonton, Alberta Canada
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    12

    Default

    i just bought the turbomaster and the install was easy and you get preset instruction for stock or a chip i can light up the tires now
    94 suburban 6.5 TD K2500, AFE cold-air intake, fsd cooler, #9 resister ssdiesel, posi-lok front diff engagement.

  3. #3
    Join Date
    Feb 2007
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    Default

    Good one, I notice an incredible difference for changing the amount of boost
    Grant H.
    1994 6.5 turbo GMC K2500 HD suburban "F" VIN FSD heat sync #9 resistor, PMD in the bumper, no cat, mechanical waste gate, 220,000 miles, 4L80E Positrac 3.73 diff, 17 mpg highway.
    1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, 21 years.

  4. #4

    Default

    Grancito... Do you have EGT and boost gauges?
    SOLD:
    95 6.5L 3/4tn 4x4 Suburban
    Boat Pullin Walleye Wagon
    `..`..`. ><((((>


    FOR SALE:
    2001+ Center Caps ($50 shipped)
    (PIC)

  5. #5
    Join Date
    Feb 2007
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    Default

    Only a boost guage, I still have all of the sensores connected so if temp or pressure goes too high the SES light comes on and the computer defuels. But you can over boost for a short time with no cut back or SES light, good for overtaking.
    Last edited by grancito; 09-18-2007 at 11:46 PM.
    Grant H.
    1994 6.5 turbo GMC K2500 HD suburban "F" VIN FSD heat sync #9 resistor, PMD in the bumper, no cat, mechanical waste gate, 220,000 miles, 4L80E Positrac 3.73 diff, 17 mpg highway.
    1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, 21 years.

  6. #6
    Join Date
    Aug 2007
    Location
    Springfield, Missouri U.S.A.
    Posts
    533

    Default

    In that picture it appears as tho the spring is horizontal. The actuator on mine is verticle. Is mine different or am i looking at that wrong?
    1996 Chevy Suburban 2500 4x2 6.5 TD 4L80E 225,000 Miles. New IP, lift pump, glow plug controller, harmonic balancer

    1979 Chevy C10 Pickup, Long Bed, 454 with TH400 and 14 bolt FF 4.10 rear

    1976 Ford Pinto Sedan With Trunk. 2.3/4 Speed 151k Miles

    1974 Ford Pinto Wagon 2.3/4 Speed 100k Miles

    1979 Ford Pinto Sedan 2.3/Auto 107k

  7. #7
    Join Date
    Feb 2007
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    Baja California Sur Mexico
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    Default

    The spring is verticle for your year, you should be able to make a simple adjustable system for yours.
    Grant H.
    1994 6.5 turbo GMC K2500 HD suburban "F" VIN FSD heat sync #9 resistor, PMD in the bumper, no cat, mechanical waste gate, 220,000 miles, 4L80E Positrac 3.73 diff, 17 mpg highway.
    1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, 21 years.

  8. #8
    Join Date
    May 2007
    Location
    Florida
    Posts
    107

    Default

    I have the turbo master as well. It was easy to install. Most importantly, it has a spring that is calibrated specifically to the application. Seems risky to just put any old spring on there. But if you have a boost gauge, as I see you do, you can monitor the boost. My understanding is that you should be at 3lbs boost at 65 mph and according to Boost Master, do not exceed 15lbs boost, due to loss of efficiency of the turbo past that.
    Craig

    1994 2500 Ext Cab Long bed 4x4. F code. 165k. NV4500 - - 3.42 gears (originally 4.10). 17" H-2 wheels (265/70/17 Michelins), Remote FSD , K&N, Chip, Down pipe (3" tapering to 31/2"), no cat., 4" exhaust w/flow though muffler. New in July 2007: engine (6.2 block), ARP head studs, ceramic coated pistons, H1 oil pump, stock cam, 21:1 compression...), Lift pump, filters, lines, hoses... Non EGR Intake, Mechanical Boost Master (12psi), deleted vacuum pump, Boost and EGT gauges.

  9. #9
    Join Date
    Feb 2007
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    Baja California Sur Mexico
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    Thanks for that info, I haven't used mine since the final change, so have to adjust it. It was assisting the original system before, and giving 4 1/2 psi at 65 mph which I thought to high so changed to mechanical.
    Grant H.
    1994 6.5 turbo GMC K2500 HD suburban "F" VIN FSD heat sync #9 resistor, PMD in the bumper, no cat, mechanical waste gate, 220,000 miles, 4L80E Positrac 3.73 diff, 17 mpg highway.
    1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, 21 years.

  10. #10
    Join Date
    May 2007
    Location
    Ladysmith, WI
    Posts
    500

    Default

    I just built a manual unit today..... I cannibalized the vacuum actuator, removed the canister, welded all thread to the end of the stock rod, and use a large spring with a fender washer and jammed nuts.. Total cost: about 45 mins of labor and about 1 hr trying different springs and tensions to get the right boost.... No $100 for a TurboMaster!

    Works great. will have to get pics up soon.

    Also, there are now NO vacuum lines, valves, or turbo actuators under the hood now.... The vacuum pump will go by-by once the fan belt needs replacing..... The line from it is plugged, might as well let it hang around until the fan belt needs replacing.......
    -Matt

    Ahh the smell of Diesel Fuel, it's like coffee in the morning!

    My Car:

    1982 Mercedes-Benz 300SD Turbo Diesel (240,000 miles!)

    My Trucks:

    1995 Chevy C1500 4x2 6.5L TD (183,000 miles) Soon to be Cummins
    1988 Chevy C3500 Cummins, Billet Auto. 500+hp/1000+ lb/ft torque. Twin turbos.
    1950 Chevy Loadmaster 2 Ton - Future Cummins Pulling truck.

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