131mirafiori forum

Who knows me to say exactly what is the weight applied to the inside of the transom motor having all the Fiat 131 (Abarth included) supported by two screws?

this weight is mounted to reduce secondary harmonics so can be balanced the engine harmonics to the frame or chassis!

The racing versions and is not put it off the road version will not feel the difference ???

engineer have invented this but why nobody knows!  ;D

I always thought it is to avoid resonance frequenties off certain masses....
this could be triggered by certain engine noises etc resulting in strong vibrations of parts with the same (resonance) frequency
modern cars often have these added blocks to change te frequency
(correct me if I am wrong)
I think Enzo is right, it is more theory then practice... ;D

I never understood why they put this piece of lead into the cross member. Anyway, i always took it out. It reduces over 3 kilo's of weight and it does nothing off to the balance, handling or performances.

on the other hand, these resonances can be very harmfull....
rememeber the opera singer breaking a wineglass with the right frequecy :'(

Check the manual in parts, I do not find this particular as a spare, yet it is only common on all 131 series ???

I like to drive my "Spartan" 131  ;) :D :D A little resonance gives the car this feeling that it's alive  ;D
When the sesonance stops then i start worrying  :D :D :D :D :D

Mike,
for me gives this more vibration resonance and feeling!  :D ;D ;)

Eeeh... Enzo? Where is the piece of lead hidden in her?  :D :D :D :D

Anyway, when my group 4 is finished it will vibrate, squeek, rattle, hum, resonate and whatever more... I CAN'T WAIT... ;) :D :D :D

The lead is the weight in your pockets trying to pay for the maintenance on that model, but the curves look like it would handle, so could be worth it for a few years until the rot sets in.

Be good .............. :-*
Here more pictures of this cross, it would be nice to understand the motivation of this weight :)

And............

sorry,I'm still trying to find that part on that 131 special that Enzo posted a few posts before hehehe

sorry Sentrentu, I tried the scientific approach but then Enzo strarted posting pictures of my wife ;D ;D ;D

Your wife!?? Not bad for an 98 year old man, Henk  :D :D :D :D :D
Just kidding. Still no idea why the lead was added to the front cross member  :-[

yep, we are drifting away from the topic...
regarding my age, you are only 50% wrong
(I can post a real pic from my wife inside the 131, but need to be sure theo keeps the spammers outside this forum first.. :-\)

i am sorry Henk,
but when i was there to make the picture! there was some other guys from this forum
i can not name names but i mean it was arranged with you!
oh you don't know it! 

OK, i am a bad boy Enzo  :'(

but now i know why the beer in the fridge is on the lowest place!  ;D

Is it not just a jacking block to distribute the forces when the car is jacked up from the cross member?

As for Enzo's other vibrating, resonating accessory, I though it was standard fitment in 131s  :-\ Don't you all have that?  ;D ;D ;D ;D 

So THAT'S what it is, Theo... Need to take another look at the underside of the car Or have a look again in the dashboard box. :o :D :D I did find a small toolbox, however... :D :D :D

Stop drinking, that makes bad for your health.
I asked my wife to check the box to the engine, while her friend jumped on the engine to see if there are vibrations :-*

I never knew we had one of those ,, the block i mean not the girly's   ;)