99whitews6

iTrader: (2)

Installed shift kit and installed the 2 gold shims on the corvette servo. I think that I knew what clearance they said to measure but I think maybe I was wrong. The servo cover was very hard to get back in! I did not have ANY 2-3 flare prior to shift kit install but now it is VERY bad. Should I remove the two shims and see if that clears up the problem?

I am sure Pro Built will chime in here later today but I would like to start tearing this thing apart before then.

Thanks

Automatics

By adding 2 shims to the band clearance issue, you can burn the band if it is too tight. What now is "very bad"?

99whitews6

iTrader: (2)

Call me today if you get some free time. Also you inbox is full so I cant PM you anymore!

Ok, pulled the to shims out, didnt replace the seals just in case I need to pull it all apart again. Shifts the same. "very bad" is the same as it has always been. 1-2 shift is fine. 2-3 just flares 300-800 rpms depending on how much I get on the gas. Drove it around for 5 minutes. Got on it once and it flared so she is parked again.

FYI: I drilled all holes as the instructions say except for the 2-3 shift hole which I put at .155" and the 3-4 shift hole which I put at .125". Since I have installed the shift kit I have put on a max of 150 miles so hopefully nothing is too messed up.

Next thing to try?

99whitews6

iTrader: (2)

Anyone? What piece that was installed with the transgo kit could have generated a bad 2-3 flare?

Thanks

8a8mfh

iTrader: (3)

I tried the ProBuild recommened hole sizes once and got a real bad 2-3 flare.
Did nothing but buy a new seperator plate and drill the hole sizes to what the transgo shift kit says to drill them to and it worked perfect after that.
I'd say the hole sizes are at fault. And I say that from experience.

FLT

iTrader: (1)

I've been reading this thread and I agree .155 is a big hole. .93 to .110 is all you really need. However the 3-4 pack is probably hurt. I would probably try a new plate. If it works cool. If not...well time for a new trans.

99whitews6

iTrader: (2)

Separator plate P/N and place to purchase it?

Thanks. I will see what Pro Built has to say and if we cant get it working then I will buy a new separator plate.

chris718

it sounds like you broke the inner seal on the 2nd gear piston .this can cause a 2/3 flair by a loss of third clutch oil at the servo piston .this oil is also used to knock off the band and as an accumulator for the 2/3 shift.remove and inspect the servo seals.

99whitews6

iTrader: (2)

Man, so many different things to try! Thanks guys. I will try new seals on the piston and see if that fixes the problem. If not, then I will put a new plate in. If that doesnt work, selling the car.

8a8mfh

iTrader: (3)

Save yourself the headache and get rid of the huge holes.
I got the run around too but I already had the kit installed the only change I made was making the holes bigger and it totally screwed my shifts up. I changed only the plate with smaller holes and it shifts perfect. Firmness increases with throttle, etc.

I don't know how the hell you just break the inner seal on the second piston, it's one hell of a coincidence that you just put in a shift kit but the broken seals are causing it to have the same problem the big holes made my trans have.

99whitews6

iTrader: (2)

I assume this product(TRANSGO® 46-PLT-96 35098B 4L60E valve body seperator plate 1996-04) just comes with the metal plate itself so I would need to also purchase 35137K 4L60E Valve body gasket set 93-2000 as well correct?

Thanks again for the help guys!

FLT

iTrader: (1)

The plate is just that no gaskets. I have both in stock and I'm sure Chris at CK does as well. We are sponsors here unlike... well some people.

RevGTO

iTrader: (12)

99White and 8a8, are/were you running the stock converter with the big holes in the separator plate? That definitely would be overkill. I am using the big holes with my 3000 stall and my tranny shifts perfectly.

99whitews6

iTrader: (2)

3500 TCI stall here with the big holes. So yours works perfectly huh? Maybe fixing the seals tomorrow morning will work! I will let you guys know what happens!

8a8mfh

iTrader: (3)

I had a street fighter 3000 stall, I actually took it out and put the stock one back in until I could diagnose the problem.

I'd also buy from the sponsors who are helping us for free here, in repect to them I will remove the link, it was just a quick one I could post up. (could you delete my quote from your post)
Someone told me the bigger holes don't always work.

Greaseymec

iTrader: (9)

I had a 2-3 flare at WOT. I shrank the servo exhaust hole from .093 down to .080 and installed a slightly stiffer spring behind the servo to help kick it out. Works great! Got the advice from Dana at Pro Built and Chris at CK. I used the same separater plate. Shrank the hole by using an old body repair trick. Put a piece of copper on the back side of the hole and struck an arch with my MIG to fill the hole. Then just re-drilled it. It works.

Mec

Honda Hunter

iTrader: (8)

I have a Probuilt rebuild kit done according to the instructions and I dont have shift issues so I dunno if the holes are to big.

Automatics

The vast majority of times when the 2-3 shift "flares" after installing the Trans-Go "modified" Performance Shift kit, this is because of the 2-4 band releasing too quickly. I have found that the servo exhaust hole needs to be shrunk down from .093 down to apx. .076 - .080. The .093 hole can be the cause of the flare because of having "too much" 3-4 clutch clearance. Shrinking down the servo exhaust hole, will slow the 2-4 band release, thereby allowing the 3-4 clutches to come on before the 2-4 band is completely released. This timing issue can be resolved, as it does not happen very often, but sometimes it will take extra work to resolve this. I will be glad to help any way that I can, just let me know?

Honda Hunter

iTrader: (8)

Can other aftermarket servos be used with your kit?

chris718

first check the seals.you stated that you had trouble installing the servo which indicates the possibility that the seal is folded over or ripped.now for those who are interested,my valve body kit doesnt reinvent the circuit but this is what i found out.if a 2/3 flair happens during a 2/3 ratio change and the band and 3/4 clutch hydraulic circuits are funtional :THE FLAIR IS CAUSED BY THE BAND BEING KNOCKED OFF AND THE 3/4 PACK NOT APPLIED.THE INCREASE IN ENGINE RPM IS CAUSED BY THE TRANSMISSION RETURNING TO ITS FIRST GEAR RATIO BECAUSE WE ARE NOW BACK AGaIN TO THE USE OF THE FORWARD CLUTCHES DRIVING THE INPUT SUN GEAR INTO THE FRONT RING GEAR AT A RATIO OF 3.06 :1 AND AS SUCH HAVE REMOVED THE REAR PLANETS ROLE OUT OF THE PICTURE.now i am very aware of how the circuit works and also would like to note that there are other ways to accomplish third gear clutch apply that dont introduce the possibility of a tie up or flare for the end user.also there is 2 different 2/3 circuits between the 4l60e and 700 .assumtively we are speaking of the 4l60,although gear train operation is shared between these 2 transmissions.playing with these circuits also changes 3/2 kickdown apply rates even with the presence of a 3/2 control valve to modify exhaust rate based on transmoission output speed as well as ecm program.