4T60-E burnouts

[Jbrogan]

My 4T60-E in my 96 beretta 3100, blew the diff from doing a burnout. now why is this when my 93 has 189000 miles and its trani never gave out. I am getting another trani exactly the same that has 105000 miles and i was wondering if there is a cerain way to do burnouts or if i shouldnt do then at all, but at the raceway i am going to need to in order to heat up the tires. (I am going to use slicks) Any suggestions?

[BoostED00GagT]

your trans is just old and weak...i wouldnt buy a trans either with 105000 miles on it either...no tellin when its gonna go out..or if its even gonna work...just my .02

[Jbrogan]

My old trani only had 58k miles before it blew the diff. if that is old then wtf? how come, like i already said, my 93 beretta with 189000 miles never once had any trani problems????? o and the trani im getting is out of a 96 corsica, the exact trani according to the 4 digit code, im only paying $45 for it, but is it going to go out on me as soon as i get it or what. i have seen 4t60es with 209000 mile on them that work fine so does anyone know if 96 had issues er something? all i know is im putting the exact sam etrani in and if it goes agiain im gunna be pist off!

[Manitcor]

don't do them, ever not with a stock 4t60 your car doest make enough power to require burning out and I highly doubt your running slicks or DR's

[Azrael]

I agree with not doing them. Period. The gears that allow the differential to work weren't meant for that kind of abuse.

[sharkey]

ive seen 4t60es with 300k km on them and they work fine, and ive seen em with 65k km on em and they are smoked. its all in how they are treated.

as far as blowing diff pins, any fwd tranny will do it if you do 1 tire burnouts. even a rwd with an open diff or worn out posi will do it. the point is, cars were not meant to do burnouts, period. if you do them, you run the risk of blowing the diff up.

what happens is when you spin the tires and one tire stops, the spider gears end up spinning very fast, and oil is not able to get enough lube, the spider end up siezing to the pin, the diff pin starts to spin and break the roll pin (or retainer bolt) and then it spits the pin into the case.

if you are going to be doing burnouts, get a limited slip. this will minimize the risk of it blowing the pin through the case.

[86euro]

I've seen it happen three times, all three were under the same conditions. Both tires were spinning on a low traction surface, then one wheel grabbed a dry patch and KABLOOEY- tranny parts scattered everywhere! One of them was at night, and a few flames shot out under the car. It was pretty spectacular.

[Jbrogan]

well i am running slicks. they are just 14 inch dr. i got them for free from norwalk raceway, i go there every week. Oh and like i said why have i never seen a blown 3 spd if the 4t60e is so much better. also how come i beat the hell out of my 3 spd and it still works great. What do you guys think if i get this used trani today, and i put a new trani filter and replace the diff with a new one? will the new one maybe be stronger considering the originals, i think, are weak, Or could i put the diff out of a 3spd in it?

[85_305]

I've seen it happen three times, all three were under the same conditions. Both tires were spinning on a low traction surface, then one wheel grabbed a dry patch and KABLOOEY- tranny parts scattered everywhere!

Whoa.. i didn't know that could happen Thanks for informing me though!!

[IsaacHayes]

The double post in transmissions is where people should be replying to, but since so many have replied to this one, I'll add to it too.

The 4T60-E has the same problem as the 4T65-E-HD/etc that the GTP's have and run into a lot since they burn out pretty easy. When you do a one wheel burn out, there is a part (can't remember the name) that spins on a shaft basically. There is no bearings on this part, its just like a sleeve on a shaft. It heats up quickly and can't get enough lubrication, then it seizes to the shaft and kaaaboom. The gtp guys have tried getting bearings made for this part but it's so small that it wasn't strong enough and it came apart. Limited slip is the solution if you insist on burning out.

You should never do burnouts with these transmissions. If you do, make sure both wheels are spinning, and only for a short time. I have done a few short burnouts and left 2 tire marks, but don't anymore just in case. At the track I ran street tires 205/55/16 and never had to burn out, it grabbed just fine. Besides what good is it if only one tire burns out and heats up?

You don't really need slicks with a stock motor on a good grippy dragstrip.

If you want the car to handle better and not burn out all the time, get some different wheels and tires. I run Z26 wheels in the summer which are 16"x7" with 205/55/16 tires. I plan to run 225/50/16 this summer. The difference in handling is amazing too since the sidewall doesn't flex and of course the tires don't screech/slide. Of course I have upgraded springs/swaybars/brace/shocks&struts too.

Did you do burnouts with the 3spd regularly?

The corsica trans, should be fine if it wasn't abused. I don't think people with corsicas generally do burn outs. Berettas since they look sporty a lot of young kids have them and abuse them and tear them up. I would drop the pan, change the filter and add the fluid back in after you have it installed. Remeber to use loc-tite on the pan bolts so it doesn't loosen back up, and don't over torq them since you can strip out the aluminum. Check it in a few days to make sure none of the bolts are leaking. It won't be a full flush since the trans won't leak all the fluid out when you do this, but that's good as a complete flush can sometimes end up stripping the glaze off the clutches and then it starts slipping. If it seems to take a while to engage when cold when shifting into drive/etc, pick up a bottle of GM automatic transmission seal conditioner from the dealer and pour it in and drive it for 1000 miles and it should clear that up.

Mine is running good after a lot of years/miles/abuse so good luck and don't burn out!!

[Jbrogan]

For the question about the burnouts in the 3spd, yes i did do them very often. i ahve so many vids of me smoken em in that car it ridiculus. anyway i just dont get why gm would make a crappier trani. you said limmited slip. what exactly do you mean, and how could i do that with my trans?

Thanks for all of the info

[3400-95-Modified]

That’s like asking the question, why did GM switch from the 3.1 MPFI to the leaky LIMG 3100....

They just did and didn’t realize the issues till they were in place.

And Hayes, I'm curious on what shaft you’re talking about.

ALSO to add to all this, the 4t60e is notorious for having the tube that supplies lubrication to the differential and input shaft fall out of the accumulator pump housing... resulting in the input shaft getting no lube or the diff itself... They would be relying on splash effect from the level being high enough.

[Jbrogan]

i Like the 3100 i dont like the trani issue.
here is the shaft he was talking about

the shaft connects two gears that go between the others. its a diff.... anyway it has a washer between the gear and the shaft in wich when doing a burnout it slides on. therefore it gets hot, freezes up then snaps.

[3400-95-Modified]

I don't think thats the shaft he is referring to... because every and all diffs have that same shaft... so they would all have this issue.

Aparently you didn't read my sig, I think I know what a diff is, since well I built my own transmission, changed it to 3.33 gears, and a LSD...

I know diff failure first hand.





And this is the lubrication tube I was referring to.



And this is a LSD


Jeff From Engineered performance currently has mine and its getting upgrades, this is a pic of his first generation... I guess it has changed some.

There must be something else those 4t65e guys were trying to figure out, and I think its the Final Drive input shaft.

[Jbrogan]

where can i get a lsd