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Tranny Sound - opinions ?

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Buick Beginner

Where is my $$$ going?
Joined
Nov 9, 2001
Messages
761
Gentlemen,
I recently had my tranny rebuilt by a local company with a good reputation. We communicated very well as far as what I wanted done with the transmission, what the weak spots were, etc. The tranny was built with Borg Warner and Alto clutches, an Alto band, and a bunch of other good parts. I now have a deep capacity pan, 700 filter, a temperature gauge and a pressure gauge on the tranny (I want to make this thing last as long as I can). Anyway, here's the interesting thing: When I first mounted my Autometer pressure gauge with braided steel tubing coming up through the driveshaft tunnel and into the interior, I noticed that all of the sudden my transmission was making a "whirring" sound. Well, immediately I thought, "Great, my transmission is making noise!" Before contacting the transmission shop, I decided that I didn't want 200 psi of transmission fluid up in the interior of the car. I decided I would buy a high pressure isolator so I could run the gauge inside the car safely. I took the gauge and the braided steel off while waiting for the high pressure isolator to come in from Summit Racing. When I took the line and the gauge off, the noise stopped. I'm thinking that the noise from the inside of the transmission was routed up through the steel tubing and out through the gauge kind of like two cans connected by a string. My high pressure isolator came in and I mounted the diaphragm underneath the hood on the firewall right in front of the driver's seat. After everything was hooked back up, guess what? The whirring sound is back but it is coming from underneath the hood on the left side of the firewall exactly where I mounted the diaphragm. In your opinion, does it sound like this is pretty much harmless or should I be concerned? Thanks for the inputs. - BB
 
I'd venture to say that the steel pressure gauge line is transmitting vibration from the subtle pump pressure fluctuations. From your description, I wouldn't worry about it.
 
ererrrrrrrrrrrrrrrrrrrrshift errrrrrrrrrrrrrrrr

You should hear the test car with 320 or so psi going thru there!!!! The braided hose runs thru plastic in dash, and holy cow wrrrring you wont believe. In fact Greg is right. The pulses from p/r valve and system transfer thru line. Louder in first and reverse huh? It will make the noise. No worries......If it is quiet with gauge on look for problem.....Hehehehe One of those backwards deals. You are OK my freind....oh and you are ok too Mr. Greg Freind :D


Bruce
WE4
 
Thanks Bruce

I appreciate it, Yeah, if I unhook the gauge, the sound is gone. I can live with it though, I like seeing the pressure! - BB:p
 
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