Recent content by PonchoMan

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    Weird trans pressures, no reverse, 2-3 bind

    All of the pump parts are new and I’ve had it apart once and everything looked great and in the proper places, rotor and slide clearances good. Relief spring an ball all good and went back with the washer at the base that’s all in place. The tv is .500 and the lo/ int is .300. Funny thing is I...
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    Weird trans pressures, no reverse, 2-3 bind

    So it’s obviously been a while. I just wanted to update the group that the issue is still not resolved. I swapped back to the original PR valvetrain and pressure came up but it was still only 215 in 1st at Max TV. So I thought maybe the old PR system was worn so I went back with the sonnax o...
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    Weird trans pressures, no reverse, 2-3 bind

    It’s a CR VB with the CK .555 valve, I swapped out the CK .300 for the .300 (unknown make) that came out, and also swapped back to the original spring and the pressures got in line mostly. Now it’s just trying to get the 1 -2 pressures up a bit. I haven’t road tested the car to see how it feels...
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    Weird trans pressures, no reverse, 2-3 bind

    When you say “Blocked” what do you mean? When I went through the VB everything was just cleaned up and the only mods done was the accumulator spring was changed. The line bias spring was changed (with tightly wound spring) and the 3-2 control valve had the spring removed and a plug installed at...
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    Weird trans pressures, no reverse, 2-3 bind

    Ok guys, thanks for your patience. I just got the trans back in and check out these pressures. Sorry I would’ve called you Bruce but I got at it 7am east coast time; not a cool wake up call! Here are the numbers per the sheet you gave me. IDLE TV @1000 rpm P- 93 R-135 N-93 D-93 3-93 2-93 1-93...
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    Weird trans pressures, no reverse, 2-3 bind

    No results yet. Surface plate should be here this week. Then i’ll Parallel the pump halves , do some PR valving validation and re install and check pressures again. Might be 1-2 more weeks before I have numbers to post due to other commitments. I’ll keep the group posted.
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    Weird trans pressures, no reverse, 2-3 bind

    Ok here you go WE4. The first pic is of the lo/rev boost from the other end. Note that this one does not have the 2 small lines you reference. This is a CK Performance lo/rev boost valve. I did find the old one and show a pic of the two side by side and the measurement difference between the...
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    Weird trans pressures, no reverse, 2-3 bind

    Also I think I may have figured out the high pressure at “0 TV” in park. How far should the TV plunger be depressed at “0 TV”? See the first pic, that’s what it was at, vs the second pic with the plunger fully out. The j pin was sideways and caught between the VB and the mechanism, not in the...
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    Weird trans pressures, no reverse, 2-3 bind

    Found the pump slide anywhere from .004-.006” clearance and the rotor .003-.005” , checked 4 quadrants with the plastigage. That’s a problem!
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    Weird trans pressures, no reverse, 2-3 bind

    Here’s the PR valve train exactly how it came out of the pump.
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    Weird trans pressures, no reverse, 2-3 bind

    Yes to all of the queries TexasT. The pressure relief check ball looked good but will revalidate nothing got pumped into it on start up.
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    Weird trans pressures, no reverse, 2-3 bind

    Yes you are right WE4 the park pressure is crazy high; my focus has been on the 1st and second gear pressures being so low. But I assume it’s all part of the same problem. I’ll give you all a rundown on all pump modifications just so we are all on the same page. The castings are 690/088. The...
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    Weird trans pressures, no reverse, 2-3 bind

    The slide ring and o ring seal were in place. I will check the PR valve (I have 3 now). The rings, rotor, guide, and vanes all look the way when I installed them. The quest continues....
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    Weird trans pressures, no reverse, 2-3 bind

    Trans is out and the pump is out. Nothing obvious to me yet. Do y’all see anything that could lead to the low pressure issue? I’m going to recheck the pump clearance, and do some more digging,
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