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c00n tranny mod concern

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Old Aug 28, 2008 | 07:56 PM
  #1  
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c00n tranny mod concern

I just did the tranny mod and now the 1-2 shift is smooth as ever but the 2-3 shift just about snaps my neck when I am on the throttle. If just doing a good slow accel then the shift is smooth but under a load the whole truck shakes. Did I possibly get the hole to big for it. I used the smallest bit in the kit like a 1/64 or something like that.
 
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Old Aug 28, 2008 | 08:00 PM
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From: Belair md
if you drilled the hole how is the 1-2 shift smooth as ever? should be quick and snappy.

the 2-3 sounds like maybe an egged out hole or sticking valve. can you get a video of it?
 
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Old Aug 28, 2008 | 08:12 PM
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Yeah 1-2 seems to be a smoother transition then it ever has been 2-3 is really rough I will try to get a video of it tomorrow but I can tell you when it shifts my dash crackles at me I know that it's not right.
 
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Old Aug 28, 2008 | 09:51 PM
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if the 1-2 is softer then something is not right, did you clean the body out really good before you re-installed? this sounds more like a sticking valve. especially the 1-2 shift. with the hoel drilled you are allowing a ton of fluid to pass, you cant have a softer shift unless the shift valve isnt moving fast enough.
 
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Old Aug 28, 2008 | 10:29 PM
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I cleaned it using Brake Clean then took the air to it everything looked to be very clean so if say the 1-2 is sticking then when the 2-3 comes it just gets a big rush because of the sticking in 1-2 if so then I will just drop pan and re-clean.
 
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Old Aug 29, 2008 | 07:01 AM
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From: Belair md
the 1-2 wont make the 2-3 hard. does it shift hard cold and hot? or just cold?
 
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Old Aug 29, 2008 | 07:57 AM
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a drill never drills a true hole, its always egg shaped. if your worried about egg shaped holes, then a reamer should be used.
i immagine a non true hole will really effect oil flow depending on how the oval is.
 
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Old Aug 29, 2008 | 01:03 PM
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it doesnt take much to egg the hole out. i couldnt stress that enough when i made the first posts on how to do the mod with all the pictures. you have to dril carefully and patiently. the egging usualy will happen when the drill breaks all the way through. light even pressure is needed. also the 1/64th bit is very flimsy, if you push the bit wont stay straight it will bend while drilling. thats why i stressed patience while drilling.
 
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Old Aug 29, 2008 | 01:51 PM
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Joe aren't your holes 1/16 or bigger though? Even a larger 1/64 is a far cry from a 1/16. This is the biggest issue I see with this mod. There is no taking it back or no tuneability unless you want to go firmer. It might be free but only so long as you can live with your shifts if you go too far. Other wise it will cost you an accumulator body!
 
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Old Aug 29, 2008 | 02:04 PM
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From: Belair md
oh my, tj, you are very correct, the smallest bit in the typical set is 1/16, not 1/64. how did i miss that! i would hope that he didnt use a 1/64th bit. he did say he thought it was a 1/64, hopefully he thought wrong and he did use the 1/16th. if he did use the 1/64th i cant imagine the shift feel of it. my old truck was a gasser and i used the next size up which if memory serves me is a 5/32. that was a HUGE diference only going one size. i cant imagine going any bigger than that.
 
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Old Aug 29, 2008 | 02:05 PM
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Question

Originally Posted by tjbeggs
Joe aren't your holes 1/16 or bigger though? Even a larger 1/64 is a far cry from a 1/16. This is the biggest issue I see with this mod. There is no taking it back or no tuneability unless you want to go firmer. It might be free but only so long as you can live with your shifts if you go too far. Other wise it will cost you an accumulator body!
Does the accumulator could be welded?, or JB weld?
 
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Old Aug 29, 2008 | 02:07 PM
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From: Belair md
i doubt you could get a welder tip in the cavity to weld it, and if you could then you would still have to grind the excess out of it to keep from disrupting flow through the channels. i would NOT use jb weld in this scenario. hopefully he just stated the wrong bit used and its the correct holes wit a sticky valve. either way you can get another body from the junkyards dirt cheap.
 
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Old Aug 29, 2008 | 02:25 PM
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Originally Posted by c00nhunterjoe
i doubt you could get a welder tip in the cavity to weld it, and if you could then you would still have to grind the excess out of it to keep from disrupting flow through the channels. i would NOT use jb weld in this scenario. hopefully he just stated the wrong bit used and its the correct holes wit a sticky valve. either way you can get another body from the junkyards dirt cheap.
Ok, thank you.
 
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Old Aug 29, 2008 | 06:32 PM
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I would say that I am going to be going and getting another body tomorrow. I dont know that much about an automatic and probably shouldnt have done the mod. Even if the problem is just a sticky valve cant risk it will be pulling 21,000 on Tuesday about 500 miles and dont need to get things broken when the hard shift comes. Is there a way to save the not even 200 mile old tranny fluid?
 
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Old Aug 29, 2008 | 07:36 PM
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Have I gotten so old that I missed a change in drill sizes?

1/64th =.015625

1/16th = .0625


Is 1/64th not smaller than 1/16th?

If I am correct then what is the problem with the c00nhunters mod?

Rog
 
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