MartinWake

Hey guys I noticed a weird screech coming from the transmission when I do a burnout or rolling burnout acceleration, at first I heard it when I did a burnout at the drag strip but it sounds like it could be the tires but I am not sure because today I did a rolling burnout and when I let go of the gas to get on the brakes I heard it again, also when the transmission changes gears it does feel a bit harsh not sure if thats just how it is.

Here is a video at the end you can hear the sound I am talking about:

MartinWake

another video of the sound right at the 27 second mark

MartinWake

Could it be this?

MartinWake

I cut the videos and raised the volume just on the screech part so you can hear it better



The first video you can hear it quite well and compare to the 2nd one, it does happen right after the tires spin so just maybe its the sound the tires make when they are slowing down from spinning?



first video:


second video:

Ford9498

The only thing I’m hearing is the tires stretching. Mine does the same thing. I don’t think you have any problems.

MartinWake

hopefully its nothing but I am not sure..

Skizz

I don't have a 113, but could that be belt chirp from the supercharger as it goes under load?

MartinWake

Thats what a couple people have been telling me but I found this video and it sounds very similar to mine right after I do a burnout check 15-16 second mark for the sound

MartinWake

Well at first I was leaning more toward it being the tires but I went with a friend to do some test and honestly I think its the trans, its such a distinct sound , it does not sound like tires but more like a metallic sound.
It is still the same screech sound I have always said but the way it does it in relation to the gears I'm in.

So what I did was this in all clips I floor it from 1st gear and I let go of the gas all the way right before it shifts and thats when the sound is the loudest, in another clip I let it shift to 2nd I let go of throttle and it barely makes the sound. The last clip is from the outside I believe I let go in 1st gear thats why its that loud.

Another thing to note is I did some donuts and it does not make the sound I did them in first gear shifted to 2nd back to 1st and no sound I peeled out and no sound, it only does it in a straight line if I just let go of the throttle after hammering it. To understand better you can keep an eye on the RPM's. Its so hard to tell because maybe letting go of the gas and the tires gripping is the sound it makes that would explain why its louder in 1st gear since the tires and spinning faster and in 2nd they already have more grip but at this point even my friend who was in the car with me said it could be the trans, let me know what you guys think. btw check engine is cats

MartinWake

Gopro in engine bay

Puerto Rick

Get a new belt and a belt wrap kit from VRP Performance.

MartinWake

I am looking for one that is a little cheaper, I think $400 is too much for that.

Puerto Rick

Try the belt first it might do the trick. FCP Euro is a great place for parts. Thinking about it more makes me think it might be the AC Compressor kicking back in after you let off the throttle. Worn or Old belts could be the issue. I would get both belts first and run it with the A/C off.
Rick

Tommyboy928

IS THE compressor belt,that make this sound, when engine crank speed change to mutch for compressor to follow, its happends on most compressor cars. little slip screaming, sometimes you can hear it the moment compressor kick in also.

MartinWake

Yes my new belt arrives tomorrow and every run I did was with the ac off

MartinWake

Yes I can hear when the compressor kicks in I dont mind it but I do mind this ear rape screech sound luckily I bought the belt and it should arrive tomorrow.

MartinWake

I have the dip stick for the transmission but how do I know when it reaches the bottom, for me it's either dry or maxed out passed the plastic part of the dip stick

Tommyboy928

it will probaly change the slip sound a liitle , new belt is tighter than used , little shorter tighter belt, even less.

Tommyboy928

measure temp with lazer, and measure when hot,80 deegre. , not stiick to hard in, easy bend bottom pan,and show wrong.

MartinWake

Measured when hot look

MartinWake

Got the new belt installed it and it still does that sound. I probably need a belt wrap kit

v8mercedes

Martin, your engine must idle to check the tranny oil level

Tommyboy928

Did you make shure is 80 C in gearbox, Engine need run to make correct level. And dont push it hard in there, last stretch need take very slow, so you not bend the plastic end of stick in pan.bottom