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Thread: Diesel Governor Recommendations

  1. #21
    Join Date
    Jul 2014
    Location
    Jacksonville, FL
    Posts
    84

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    I'm sure y'all are tired of me by now, but, I at least think I've made some progress. Tried pulling the tv adjustment sleeve all the way out to see if that made a difference in shifting, it did. Shifted super early rather than super late. Then I had the thought, that if the gas pedal has no effect on the tv adjustment as it should, perhaps there's an issue with the throttle linkage to the gas pedal. Then I thought, what if I set the tv cable all the way back to the firewall, then pull back all the way on the throttle linkage arm (instead of the pedal) and see if that makes a difference, and it did! The TV sleeve popped back out just a little bit, which brought the 1-2 shift down to 20mph. So I adjusted the TV sleeve out a little more, and that finally brought the 1-2 shift back to 15mph, 2-3 at 25mph, and 3-4 at 50mph. Down shifts seem to be okay too, didn't try out 4-3 down shift, didn't want to push my luck. At this point I'm thinking I may have the same situation Convert2diesel had. Just glad it's shifting like it should now. Throughout the testing, temps stayed below 180.
    1988 K10 Suburban. 6.5L NA Goodwrench Engine: 506 block cast on August 12, 1996. Heavy Duty built 700R4. Full-floating 14 bolt rear axle. 3/4ton 10 bolt front. Brand new 305/75R16 Procomp AT Sport tires on brand new 16x8 steel wheels.

  2. #22
    Join Date
    Jul 2014
    Location
    Jacksonville, FL
    Posts
    84

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    Quote Originally Posted by Robyn View Post
    Hmmmm

    I see no real difference in the before and after pics ???

    Are you sure on the calibration of the governor you put in ???

    The diesel governors have heavier weights compared to the gasser ones.

    Also the springs are different too.

    At really light throttle the 1-2 shift should be under 20 mph.

    Another test you can do to check the TV setting is to do a light throttle upshift and as soon as it shifts MASH it and it should drop to 1 again.

    If no down shift then there is not enough TV pressure. (Cable set too loose)

    The entire package is calibrated for the diesel.

    This is the governor and springs
    The individual shift valves and springs

    Plus other components in the VB.

    Mixing and matching can cause things to get real hinky.

    The 700 2 &3 kit is the one.

    3 IIRC is a manual shift conversion.

    The 2 comes with a new spacer plate, springs, a valve or two and some drills to enlarge some holes.
    So the diesel governor I ordered was the same one you sent me the eBay link to. Installed it right out of the box. The valve body is the same vb from my old trans, but I have no idea if that trans is original to the truck or not. I wouldn't be surprised if it wasn't, as there is really nothing in the truck that's original at this point (PO tinkering, probably a bad purchase on my part in retrospect).

    I can tell you the new 700r4 was not built specifically for diesel application, so it's possible there is more in there that's not calibrated right (although, all of the upgrades are recommended for diesel 700r4s as well).

    I'm certain the 2-3 kit is in my new future. Does it require a professional to install or can I do it myself?
    1988 K10 Suburban. 6.5L NA Goodwrench Engine: 506 block cast on August 12, 1996. Heavy Duty built 700R4. Full-floating 14 bolt rear axle. 3/4ton 10 bolt front. Brand new 305/75R16 Procomp AT Sport tires on brand new 16x8 steel wheels.

  3. #23
    Join Date
    Apr 2001
    Location
    Newberg Oregon
    Posts
    12,282

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    Get a pressure gauge on a long hi pressure hose and connect it to the main line and see wassup during operation.

    LEFT SIDE OF TRANNY ABOVE SHIFT SHAFT A BIT


    Here are some numbers out of the GM book

    Tranny warm

    1000 RPM



    Range Minimum Maximum
    Park 90-110 190-230
    Reverse 95-120 200-300
    Neutral 90-110 190-230
    Overdrive 90-110 190-230
    Drive 90-110 190-230
    Second 185-230 185-230
    Low 185-230


    Manually move the TV cable to get the min/max positions.

    If the numbers are good then the issue is elsewhere in the box as far as shift points.

    TV IS SOOOOOOO CRITICAL ON THESE.

    Do the pressure test static and then do it running down the road to see how it does.
    (1) 1995 Suburban 2500 4x4
    (1) 1997 Astro
    (1) 2005 Suburban (Papa Smurf)
    THIS IS BOW TIE COUNTRY

  4. #24
    Join Date
    Jul 2014
    Location
    Jacksonville, FL
    Posts
    84

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    Quote Originally Posted by Robyn View Post
    Get a pressure gauge on a long hi pressure hose and connect it to the main line and see wassup during operation.

    LEFT SIDE OF TRANNY ABOVE SHIFT SHAFT A BIT


    Here are some numbers out of the GM book

    Tranny warm

    1000 RPM



    Range Minimum Maximum
    Park 90-110 190-230
    Reverse 95-120 200-300
    Neutral 90-110 190-230
    Overdrive 90-110 190-230
    Drive 90-110 190-230
    Second 185-230 185-230
    Low 185-230


    Manually move the TV cable to get the min/max positions.

    If the numbers are good then the issue is elsewhere in the box as far as shift points.

    TV IS SOOOOOOO CRITICAL ON THESE.

    Do the pressure test static and then do it running down the road to see how it does.
    Got a pressure gauge kit coming tomorrow.

    Got the 700-2&3 kit coming Monday. I plan on dropping the pan next week anyways to make sure nothing is damaged so I figure that's the best time to install it. Hopefully it's not too complicated
    1988 K10 Suburban. 6.5L NA Goodwrench Engine: 506 block cast on August 12, 1996. Heavy Duty built 700R4. Full-floating 14 bolt rear axle. 3/4ton 10 bolt front. Brand new 305/75R16 Procomp AT Sport tires on brand new 16x8 steel wheels.

  5. #25
    Join Date
    Jul 2014
    Location
    Jacksonville, FL
    Posts
    84

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    Of course, I do have another question: at the column, as I shift between park, reverse, neutral, overdrive, drive, second, and low, once I get past overdrive and move towards low gear, the shifts st the column feel less and less firm to the point that I'm not even sure if I'm in low gear. How do I go about fixing this?
    1988 K10 Suburban. 6.5L NA Goodwrench Engine: 506 block cast on August 12, 1996. Heavy Duty built 700R4. Full-floating 14 bolt rear axle. 3/4ton 10 bolt front. Brand new 305/75R16 Procomp AT Sport tires on brand new 16x8 steel wheels.

  6. #26
    Join Date
    Jul 2014
    Location
    Jacksonville, FL
    Posts
    84

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    So I just finished watching the installation video for this shift kit, and man is it tedious/overwhelming. Question, part of the install includes modifying the servo, but I already have a corvette servo in the trans, so couldn't I just skip that part?
    1988 K10 Suburban. 6.5L NA Goodwrench Engine: 506 block cast on August 12, 1996. Heavy Duty built 700R4. Full-floating 14 bolt rear axle. 3/4ton 10 bolt front. Brand new 305/75R16 Procomp AT Sport tires on brand new 16x8 steel wheels.

  7. #27
    Join Date
    Apr 2001
    Location
    CA
    Posts
    13,573

    Arrow

    Contact TransGo. There may or may not be an advantage.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

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