Jump to content


Photo
- - - - -

Front End, Steady Knock When Decelerating (Possibly, Non-Brake Specific)


  • Please log in to reply
3 replies to this topic

#1 deadbolt

deadbolt

    Just On Tickover

  • Noobies
  • Pip
  • 5 posts
  • Location: Virginia

Posted 21 June 2024 - 03:35 AM

Hello all,

I've had a recent issue that I haven't had in the years I've owned my mini. It's a '78, but converted to a 1300 clone by previous owners. I've been cleaning up their mess ever since, a lot of jerry-rigging was done before I acquired her..very sadly.

More recently, I have been having an issue that feels to me to be serious, but only happens 'sometimes' and I can't seem to nail it down. It only occurs once every other week or so, starting about 2-3 weeks ago.

On these occasions, when I start slowing down (within the 2nd to 1st gear range roughly, speed-wise) with, or without the clutch engaged and without using the brakes, I hear a steady 'clinking / knocking' sound from the lower front-end. I can't feel it in the pedals, body or steering. But It's a notable steady knocking sound only when I'm slowing down towards a stop and it quiets down a little when very lightly applying my brakes. When I press heavy on my brakes the knocking stops completely, but when I let up the brakes still in slower motion, the sound continues.

I've already replaced my front hubs, bearings, rotors, calipers, CV-joints, ball-joints, tie-rod ends etc., all are still very tight and properly torqued, no notable wiggle in the front wheels themselves when off the ground, as well as the tires being balanced...Basically nothing seems 'off' at all in the area of question from what I, myself can evaluate..

My mini has been my daily driver for years now and I've always felt very safe with her after the work I've put in (especially with some wiring issues from previous owners, that needed some sorting out of course), but this new issue is worrying me quite a bit.

Do any experienced Mini aficionados have and ideas what may cause this?

Thank you very much for your time,


-Carson

 



#2 greenwheels

greenwheels

    Super Mini Mad

  • Members
  • PipPipPipPipPipPip
  • 689 posts
  • Location: Gloucestershire
  • Local Club: Mini Fixers

Posted 21 June 2024 - 09:05 AM

Are the engine mountings OK, especially the steady rods and brackets underneath the engine.



#3 slidehammer

slidehammer

    One Carb Or Two?

  • Members
  • PipPipPipPipPipPipPip
  • 1,197 posts
  • Location: Surrey
  • Local Club: LSMOC

Posted 21 June 2024 - 09:15 AM

Have you checked the front subframe mounts where they bolt onto the front panel?. I had a knocking on mine when braking and when I replaced them it cured the problem. One of them turned out to nearly split in two, but you couldn't see that whilst fitted.



#4 lsto

lsto

    Super Mini Mad

  • Members
  • PipPipPipPipPipPip
  • 606 posts
  • Location: Essex

Posted 21 June 2024 - 07:37 PM

All backplates nice and tight? If it comes and goes under braking I'd check the pads are secure in the calipers, no movement or wear and all pistons moving correctly, not partially seized.




1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users