What did I break this time?

[JDHedman]

the trans is making a unhappy sound when it is not under load. clutch in, clutch out, in gear, out of gear. don't matter but it does not make the sound when it is under load.. it changes pitch when I move the shifter into a gear. it kinda sounds like a fast spinning bearing if you know what I mean...

I got a shitty video you can kinda hear it but its hard over all the other loud ass noises my car makes lol

you can hear me go on and off of the gas



throw out bearing maybe? synchros? fucked trans?


I noticed the sound after my third pass.. I was half way into my burnout in the box when the dude shut me down cuz the car in front of me left some parts on the track. I then did a second burn out the tires seemed to start to stick so I let off. launched like usual and spun quit a bit and nothing unusual until I noticed the sound coming back to the staging lanes. it drives fine just makes the noise when not under load.

I put the car in the garage until I have some time to pull it apart again..

the trans is a Dr. Evil built T-56 it has a LS7 clutch and flywheel.

Click to read more...

 

[BoostedK20]

Switch that clutch out for a Monster.

Look at the driveshaft and rear end...

 

[pbdevastator]

Just get a really fast rc truck, a lot cheaper to fix when you break those. Took some video of the Jato today, letting engine cool down and gonna get some more.

 

[KagA152]

i cant tell anything by the video, does it change with engine speed or vehicle speed?

 

[JDHedman]

i cant tell anything by the video, does it change with engine speed or vehicle speed?

It does a bit.. seems to be a bit quieter and high pitched at high speed. doesn't change any if with rpm when out of gear or clutch is in

 

[KagA152]

alright, i was thinking input shaft bearing but that would change with rpm out of gear clutch out. i would guess mainshaft then, ive seen the front mainshaft bearing go out before and doesnt take long for the input shaft bearing to follow

 

[HILROD]

Does it make any noise at idle? Or only when moving?

 

[JDHedman]

Only when moving. It does sound like a bearing just not sure what one/ones just hope its not gonna be a full on rebuild needed

 

[Junk86]

I'd bet its the throwout bearing.

 

[Turbocharged400sbc]

alright, i was thinking input shaft bearing but that would change with rpm out of gear clutch out. i would guess mainshaft then, ive seen the front mainshaft bearing go out before and doesnt take long for the input shaft bearing to follow

im gonna go with mainshaft/output to rearend driveline section issues as well

from what your saying it would still make the noise when your moving and you shut the engine off, thats def not input shaft and upstream related

if you wanna locate the noise, your prob gonna have to yank the driveshaft and spin up the rear to see if you hear that noise to rule it out.

 

[JDHedman]

what can I expect to pay for a diagnostic and repair if it is mainshaft/output issue?

I would prefer FLT but I dont know if they would like working on another shops trans...

gonna pull the trans this week and bring it in as soon as I scrounge up the money.

 

[SmokedOutZ28]

I doubt FLT will care, I've heard Andy talking about fixing other peoples work before.

I can't see the Input/output shafts costing alot but I don't do it everyday to know. Talk to them about the budget build and see what they say.

 

[JDHedman]

Dropped the trans off at FLT last night, Should know more in a few weeks

 

[udluuz]

Andy will take care of you. They've done a great job for us.