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Old 04-06-2018, 06:07 AM   #21
pushlar84
 
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I’d put th upgraded spring in
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Old 04-06-2018, 06:08 AM   #22
jasonc

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I can text it to you if you want, just drill a hole directly sideways from the Allen screw and tap it to 1/4" npt.
 
Old 04-23-2018, 07:22 AM   #23
SPEEDSHIFT
 
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I got the transmission back together and was supposed to have a weekend of testing before NHRDA Texas race, but while trying to get my new Anteater controller tuned in I ran into some problems.

Now the truck wont hold 2nd, 3rd, and OD without slipping. I checked line pressure and its at 180psi. I dont know if I need more pressure than that, or what is going on. Either way, I made four passes and it burnt the clutches so bad it clogged the filter up and wouldn't move. I changed the filter and got it driving again, but I need to figure out the problem.

Any ideas?
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Old 04-23-2018, 01:14 PM   #24
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What’s the build sheet look like on this trans?

From your description, I’d look closely at fluid flow. Almost sounds like you have inadequate fluid to the clutch packs.
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Old 04-23-2018, 02:36 PM   #25
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Quote:
Originally Posted by Red Sleeper View Post
What’s the build sheet look like on this trans?

From your description, I’d look closely at fluid flow. Almost sounds like you have inadequate fluid to the clutch packs.
Georend VB
DPC triple disk
All billet shafts
billet servos
billet band strut and anchor

Still has the stock drum and apply piston, which I know would help things. I am starting to think it may have a leaky piston seal. I didnt test any of the other ports, just line pressure. Is there a way to diagnose a leaky piston seal with a gauge?
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Old 04-23-2018, 08:36 PM   #26
JEWING3227

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Quote:
Originally Posted by SPEEDSHIFT View Post
Anybody have an idea what is going on with these marks on the bellvue spring? Looks like it is hitting on the step plate for the clutches. How can I fix it?

Click the image to open in full size.
A 727 bellville is going in my build currently. Stock bellville is around .064 and the 727 bellville is around .086.

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Old 04-26-2018, 06:24 PM   #27
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Figured it out, smoked the converter. Everything else looks good. I dont know what caused it though.
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Old 04-26-2018, 08:05 PM   #28
thatguy69
 
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What converter

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Old 04-27-2018, 06:13 AM   #29
Red Sleeper
 
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What converter

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DPC triple disk converter. Read post #25.

OP, I’d still verify fluid flow throughout the case and shafts. Why else does a triple disk converter slip?
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Old 04-27-2018, 06:45 AM   #30
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DPC triple disk converter. Read post #25.

OP, I’d still verify fluid flow throughout the case and shafts. Why else does a triple disk converter slip?
I dont think it was the converters fault, it the same power before I changed this last round of parts.

I did change the lockup solenoids because I needed a different harness for the gov pressure sensor. I used some cheapo Oreillys brand harness/solenoids to get the truck going. I think that is the most probable culprit as it only took a few parts to swap over the VB to auto shift. 2 springs, 1 plug, a separator plate, and a DNJ billet gov solenoid/sensor.

Does anyone know how to check lockup pressure to the converter?

Everything in the transmission still looks good, just smoked the chit out of the converter.
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Old 04-27-2018, 06:47 AM   #31
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The converter got so hot it melted the paint off.

Click the image to open in full size.

Click the image to open in full size.
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Old 04-30-2018, 11:20 AM   #32
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I was a bit misleading about the converter, it is a Suncoast converter I had rebuild by DPC. I got it sent back to DPC for another rebuild and I am sending the VB off to Firepunk for a health check/upgrade. Should get everything back in time to start testing in preparation for the NHRDA Tulsa race.

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Old 05-14-2018, 11:05 AM   #33
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Update:

It ended up being a sticky valve in the valve body that was only applying 60psi of pressure to the converter. Firepunk diagnosed it on their machine. They bored are replaced the valve for me and got it sent back in record time.

Phil at DPC turned my converter in record time as well and made me a great deal.

I really appreciate these guys getting me fixed up. Makes racing a lot more enjoyable dealing with great companies.
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Old 05-14-2018, 06:52 PM   #34
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If the trans is out, you really should put a new belleville spring in there. I understand the race is this weekend.... but fix it right our you'll lose the forward clutch in no time! If you're in a bind for parts, re-shimming that pack tighter will help with a weak belleville spring.
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Old 05-15-2018, 08:42 AM   #35
SPEEDSHIFT
 
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Quote:
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If the trans is out, you really should put a new belleville spring in there. I understand the race is this weekend.... but fix it right our you'll lose the forward clutch in no time! If you're in a bind for parts, re-shimming that pack tighter will help with a weak belleville spring.
I apologize, I didn't mention I changed the bellville spring to the older style and swapped from a Raybestos flex band to a solid Borg Warner band. Also swapped from some cheapo servos to TCS servos and accumulator. I also plan on turning the pressure up a little, around 200psi.

I appreciate you lookin out!
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Old 05-15-2018, 10:19 AM   #36
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Glad it was figured out. Was kind of sad your trans died after installing my old ant eater!


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