b620 pickup mysterious breaking noise

[CALsDookieDatsun]

my datsun b620 pickup has been making a noise that sounds like rubber rubbing on either metal or more rubber only when i break. it sounds like its coming from the rear driver side.

i took the rear and front tire off and everything is good. nothing moves when and where it shouldnt. i took the break drum off and nothing is worn or broken. 

the tires do not show any sign of ware or gouging. i also do not see where the tire could be rubbing, its got a couple inches all around. 

but when i break i can hear the fuzzzzbt fuzzzzbt fuzzzzbt fuzzzzbt of the tire spinning. or at least its something thats spinning, im pretty sure.

 

what could it possibly be?

[CALsDookieDatsun]

Also, as i break the fuzzzzbt gets longer. its something rubbing as it slows. im just wondering what im missing. 

[HOGIE]

Is this a newly put back together Datsun, new to you or a newly developed issue?

Edit: Also have you put it back together and drivin it since you just pulled the drum to inspect?

[datzenmike]

Check the air pressure in all the tires.

 

Raise and spin the tire. Watch to see if it spins true or squirms side to side. Does the tire tread have any high spots??

[CALsDookieDatsun]

Yes HOGIE, i put it all back together, and took it for a drive down the road and it was still happening. Thats after i pulled the break drum off and everything was as it should be. The problem started about 2 days ago. It wasnt under heavy use, just cruising on flat land through town. 

 

datzenmike, i did check the tires when i first heard the noise and immediately put air in the the front driver side tire, even though it wasnt low enough to cause the noise. but it was a bit low. the noise continued. i drove it home and took the tires off and inspected them for the high spots, and any kind of uneven ware due to rubbing or catching. there was none. i spun the tires and they spun normally. no side to side movement, and nothing was loose. 

 

and thats whats confusing me. i ruled out the only things i can imagine it to be.

[datzenmike]

Swap tires to the front and see if the noise moves. Tire tread may be separating inside.

[MikeRL411]

It's "brake", not "break".  Although your brakes may have a break.  They are called homophones, dissimilar meaning words that are pronounced alike.

[CALsDookieDatsun]

i spell like i live, loosely. Leave me to it.

 

datzenmike, i switched the tires and drove about 4-5 miles, no sound from the back at all. there may have been a slight noise in the front but it was so slight that it could have also just been the putting of the l20b engine, im not sure.

now, is it still ok to drive? or should i get the tires changed as soon as possible? could the tire blow soon?  

[datzenmike]

Most vehicles seldom do bad things without a warning. Seems like moving the tires has moved the sound problem then? Well the fronts will have slightly more weight on them and more when braking. If curious take them to a tire store and ask them about it. Maybbe they can examine them better. Keep in mind they will want to sell you new ones. :lol:

[CALsDookieDatsun]

Very true!   :P

Thanks for the help! :thumbup:

[racerx]

Any rubbing marks on the tire or tires