tunedportcj5

iTrader: (18)

I had about 200 miles on a new built trans. Coming home today from a good day of tuning - I lost 3rd and 4th gear. Manual low and 2nd work perfect. D and OD work fine until it hits 3rd gear and then it revs up with no power.

There were not any weird signs of failure before it happened, i just floorboarded it @ 70 mph and it bouned off the limiter. Its been F'd ever since.

I built the trans myself - everything was 100% inspected, clearances checked, seals replaced...etc.

Here are the parts that were replaced/upgraded:
-HD rear 5 pinion planetary
-vette 2nd gear servo
-sonnax super 4th
-alto kolene steels
-alto red eagle clutches
-alto wide band
-transgo **** kit
-10 vane pump rotor gear, guides, and vanes
-beast sun shell
-sonnax 1-2 and 3-4 "pinless" billet accumulators
-TCI deep pan

I have a hard time believing/thinking that its the 3-4 clutchpack but with my luck it probably is. The fluid still looks new and pink!

I haven't torn it down yet but I was hoping someone might have an idea or could point me in the right direction...

Thanks,
David

FLT

iTrader: (1)

It is possible that you might have broken the input drum where the 3-4 clutch snap ring is suppose to go. This can be caused by excessive pressure, improper accumulation or even feed hole sizes that are much to large. I guess the first hing to do is to see what is damaged first and then figure why. Good luck, Vince.

performabuilt

iTrader: (25)

I would agree sounds like you broke the 3/4 snap ring lugs in the input drum.

tunedportcj5

iTrader: (18)

Thanks guys.. I'll tear it down in the next couple of days and report back... I can't wait

Thanks,
David

FLT

iTrader: (1)

We have parts available if you need them. Vince

spec_j

iTrader: (3)

my trans does the samething, check the 3-4 clutches and make sure they are all good before you put everything back together just to be on the safe side. Doesnt take alot ot mess them up once the car free revs

imfg69

sounds like the same issue I have

tunedportcj5

iTrader: (18)

Yep... 3-4 clutchpack is TOAST.... Everything else looks perfect.

I noticed when I was pulling the snap ring out that there was a TON of slop in the drum. I'm assuming its because all of the clutch material is gone? Maybe I F'd something up during install. Can anyone recommend anything I should check and inspect?

Can I purchase just the 3-4 clutches and steels? Should I replace the steels?

Please take a look at the link below - its a pic of my "new" clutches

http://www.terratraction.com/incoming/DSC03267.JPG

Thanks,
David

performabuilt

iTrader: (25)

if you need any help testing things give me a call

tunedportcj5

iTrader: (18)

Do you sell just the 3-4 clutches?

performabuilt

iTrader: (25)

No Im afraid we do not sell any individual parts at all .

tunedportcj5

iTrader: (18)

I would have thought I messed up a lip seal while assembling but everything looks good. What else can I inspect that would cause loss of pressure to the 3-4 clutches?

performabuilt

iTrader: (25)

Check the oring in the center, Check the inside of the stator for wear in the area the teflon rings ride.

tunedportcj5

iTrader: (18)

O-ring and stator look perfect

performabuilt

iTrader: (25)

Hmm check servo rings and the encapsulated check ball in case near the servo . Make sure the ball moves and theres no trash there.

FLT

iTrader: (1)

Might want to take a look at the drum itself. The input shaft might be floating and causing a cross leak. I press these out on every rebuilt unit to verify that the drum is good and also that the shaft has resistance when it is pressed back in.

ChevPower

iTrader: (8)

What was the clearence when you set up the 3/4 clutch?

usd2sing

iTrader: (15)

did u have any debris in the pan or on the magnet after this happened??

tunedportcj5

iTrader: (18)

.028" - seems tight to me but thats what the kit recommended.

tunedportcj5

iTrader: (18)

yep...