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Old 04-03-2019, 05:09 PM   #1
RollCoal9000

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2-3 bind or axlewrap

Is the 2-3 shift on a 38re supposed to defuel? Feels like the truck stops accelerating for a split second, or like brakes are tapped almost. I drilled the 2-3 shift homes for firmer shifts. I have 3" blocks also could be axlewrap?
 
Old 04-09-2019, 01:08 PM   #2
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Quote:
Originally Posted by RollCoal9000 View Post
Is the 2-3 shift on a 38re supposed to defuel? Feels like the truck stops accelerating for a split second, or like brakes are tapped almost. I drilled the 2-3 shift homes for firmer shifts. I have 3" blocks also could be axlewrap?
Its probably a 2-3 bindup issue. what apply lever and servos did you use? Transgo shift kit I assume?
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Old 04-09-2019, 03:27 PM   #3
RollCoal9000

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It burned up the band among other problems not fun pulling it out again
 
Old 04-09-2019, 03:36 PM   #4
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It burned up the band among other problems not fun pulling it out again
I use a 4.2 apply lever and sonnax servos in the trans for my 2004. I havent had any issues with that setup and Transgo shift kit.
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Old 04-10-2019, 07:52 AM   #5
RollCoal9000

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Gonna try an orifice in the 3rd gear apply port also have a heavier servo spring coming
 
Old 04-10-2019, 01:05 PM   #6
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Something doesn't sound right. What'd you set your direct clearance at? And what's your line pressure
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Old 04-10-2019, 01:33 PM   #7
RollCoal9000

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It was at 110 at idle 140 with the converter unlocked and 175 in od. .106 direct clearance.
 
Old 04-17-2019, 11:00 AM   #8
RollCoal9000

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Phil said the converter clutches looked like they were dragging. What might cause that? He said the cover looked brand new but the clutches looked worn.

When I had it on Jack stands testing all the gears it did fail to unlock in 3rd once and killed it. Or it could've been the band binding up killing it.

It drove fine and locked and unlocked good. It did put a bit of a load on the engine at idle but I assumed that's because it's a low stall converter.
 
Old 04-17-2019, 11:40 AM   #9
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Quote:
Originally Posted by RollCoal9000 View Post
Phil said the converter clutches looked like they were dragging. What might cause that? He said the cover looked brand new but the clutches looked worn.

When I had it on Jack stands testing all the gears it did fail to unlock in 3rd once and killed it. Or it could've been the band binding up killing it.

It drove fine and locked and unlocked good. It did put a bit of a load on the engine at idle but I assumed that's because it's a low stall converter.
Could have trash in the OD solenoid causing it to lock.
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Old 04-18-2019, 12:42 PM   #10
RollCoal9000

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The switch valve had a gouge in it where the roll pin I put in seated too far into the bore, probably the source of lockup troubles. I had drilled the holes for lockup a while back and didnt want it to be too harsh so stuck rolls pins in them. Probably why it stuck in lockup before, maybe why clutches were dragging.
 
Old 04-28-2019, 11:45 PM   #11
RollCoal9000

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Few questions if anyone has any input.

1.) Phil said the converter clutches looked like they were dragging due to a pump issue. I think it was the switch valve sticking. The pump made good pressure and didnt whine. What would indicate a pump problem?

2.) I replaced all bushings and honed them by hand with Emery cloth, they all had some hot spots on disassembly, but they spin good by hand. So I THINK they'll wear in but if I need to get a brake hone or use another method to clearance them I will pull it all apart, any input on this would be helpful.

3.) How tight should the converter bushing be, I honed it by hand last time to get the converter to slide in. Was installed wrong and chewed up hub and bushing. I should be able to turn it easily by hand right?

4.) I have two selective thrust washers on the stator side atm to get ~.04 endplay. The largest I have gets me .08. Ok to shim it with two selective to get the endplay tighter?
 
Old 04-30-2019, 04:38 PM   #12
RollCoal9000

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https://www.youtube.com/watch?v=lS2JO90Yt6M
 
Old 05-16-2019, 02:58 PM   #13
RollCoal9000

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https://www.youtube.com/watch?v=_fvdRDnh6wM

125-175 in OD port
125-160 in 2nd servo port
 
Old 05-16-2019, 10:08 PM   #14
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Have you tried swapping vbs?
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Old 05-17-2019, 01:58 PM   #15
raychem

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What he said^^^^. Swap VB and test. Use a stock one.


If you want to test my suggestion to you is modify a forward discharge line so you can TC pressure. You may have the VB charging the TC when it is not supposed to. TC circuit is on/off and no in between. You should see 3-6 psi of pressure in the line. Anything much higher than that the TC is charging causing the dragging. Since you are also complaining about a 2-3 bind it sounds like you may have more than one issue with your VB.
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Last edited by raychem; 05-17-2019 at 02:00 PM.
 
Old 05-17-2019, 02:14 PM   #16
RollCoal9000

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It's either a vb problem or internal leakage. I have 6psi line pressure in neutral and a little bit in reverse, can feel forward clutches dragging in reverse. And I do not have the time to mess with it anymore so looks like I'll have to send it off.

Adjusting the manual valve made these problems worse and I cannot find any information on where it should sit in each gear. It's a ****show.

Last edited by RollCoal9000; 05-17-2019 at 02:15 PM.
 
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