AidanT Posted July 17, 2016 Report Share Posted July 17, 2016 I am still trying to identify a noise made by my GT6. I can only describe it as a grasping sound something like mud flaps grounding on tarmac It only occurs at over thirty on bumpy roads and slightly on right hand corners. It's worse when two people are in the car I thought it was the front nearsde tyre touching the bulkhead but this has proved not to be the case. I cannot find any underneath bodywork rubbing so I'm a bit lost on this one Has anyone had similar and found the reason and a solutin? Thx Aidan Link to comment Share on other sites More sharing options...
AidanT Posted July 17, 2016 Author Report Share Posted July 17, 2016 I don't have mud flaps bon the car. ???? ???? Link to comment Share on other sites More sharing options...
Colin Lindsay Posted July 17, 2016 Report Share Posted July 17, 2016 Tyres on the inside of the wheel arches? My Mk1 used to have quite a wide flange at the arch lip - about an inch deep - and the rear tyres used to rub on this, in fact it used to dig large grooves into them. Check both your tyres and the inside of the arches, especially if you've fitted wider wheels than standard. I cured it by removing the Spitfire spring I was using and replacing it with a proper GT6 spring - much stiffer and less bottoming out. Exhausts and hangers can also hit the ground but this is a more metallic sound. Link to comment Share on other sites More sharing options...
dougbgt6 Posted July 17, 2016 Report Share Posted July 17, 2016 Aidan, I think we may be talking UJs? Not too difficult or expensive a job. Check it out. Link to comment Share on other sites More sharing options...
AidanT Posted July 18, 2016 Author Report Share Posted July 18, 2016 Tyres on the inside of the wheel arches? My Mk1 used to have quite a wide flange at the arch lip - about an inch deep - and the rear tyres used to rub on this, in fact it used to dig large grooves into them. Check both your tyres and the inside of the arches, especially if you've fitted wider wheels than standard. I cured it by removing the Spitfire spring I was using and replacing it with a proper GT6 spring - much stiffer and less bottoming out. Exhausts and hangers can also hit the ground but this is a more metallic sound. Hi Colin - I will check this out but I was running on 165/80 tyres on 5J minilites and still had the problem then - changed to 175/70 to see if that helped - but no change. I guess it is possible the car is somehow bottoming out and the spring is tired, I think the noise is from the front but my wife thinks its from the rear !! I can't / haven't any rubbing on the tyre side walls Doug UJ's checked out a little while ago by Mike Papworth - and one half shaft replaced at that time - about a year ago - The sound issue was there before and still there now. plus its not constant. No noise at all zipping down the A1 for instance Aidan Link to comment Share on other sites More sharing options...
Ben Caswell Posted July 18, 2016 Report Share Posted July 18, 2016 Is it the body flexing and the bonnet rubbing against its mountings ? Link to comment Share on other sites More sharing options...
AidanT Posted July 18, 2016 Author Report Share Posted July 18, 2016 Hi Ben That is certainly possible - How would I tell though? Can you point me in the right direction? Thx Aidan Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 18, 2016 Report Share Posted July 18, 2016 Does applying the brake lightly change the noise when its doing it ?? Link to comment Share on other sites More sharing options...
AidanT Posted July 18, 2016 Author Report Share Posted July 18, 2016 Hi Pete It's so quick it would be almost impossible to catch As sad it's almost intermittent in when it happens but usually due to a country road pot hole. Not a massive hole but sometimes where the tarmac has dipped into the verge. A definite scrapping sound Could be rubber on metal rubber on tarmac or even metal on metal if it was coated in something I just can't seem to find the consultant scratch or worn area Aidan Link to comment Share on other sites More sharing options...
AidanT Posted July 18, 2016 Author Report Share Posted July 18, 2016 Spellcheck apologies on that - hopefully it still makes sense. ???? ???? Link to comment Share on other sites More sharing options...
AidanT Posted July 18, 2016 Author Report Share Posted July 18, 2016 Oh. And it's only on the nearside of the car not offside Aidan Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 18, 2016 Report Share Posted July 18, 2016 One area for hidden scraping and scratching is the front shocker centre stem rubber has deformed and the shaft is fouling the hole in the turret, easy to whip the top nut and washer off and look at the fit , theres a small useless shoulder on the bush which should keep the bush central In the turret hole pete Link to comment Share on other sites More sharing options...
Ben Caswell Posted July 18, 2016 Report Share Posted July 18, 2016 Hi Ben That is certainly possible - How would I tell though? Can you point me in the right direction? Thx Aidan I am working on Vitesse experience but try spraying or smearing some WD 40 or rubber grease on the rubber seal and the cones. Link to comment Share on other sites More sharing options...
AidanT Posted July 18, 2016 Author Report Share Posted July 18, 2016 Pete I will check that out. If it's not straight what's the solution? Will anything have been damaged? Ben Sorry can you give me some more direction on this. Where abouts are these cones? Thx Aidan Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 18, 2016 Report Share Posted July 18, 2016 the cones are under the rear edge of the bonnet no 9 and sit in a cup on a brkt fitted to the baulk head early had a canvass and wedge arrangement not a rubber cone and cup , the cones can be adjusted for length and its got a big hole with a penny washer to allow lateral adjustment the cup is also on slotted Link to comment Share on other sites More sharing options...
Ben Caswell Posted July 18, 2016 Report Share Posted July 18, 2016 Thanks Pete, Aiden, It may pay to track down a local member and take him as passenger noise spotter or perhaps there is a local meet near you that could possibly help. If something is rubbing it would normally leave a shiny mark somewhere. Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 19, 2016 Report Share Posted July 19, 2016 Aidan, shocker solution is just renew the rubber bush you can sometimes replicate bonnet noises by some rigorous exercise of the bonnet Pete Link to comment Share on other sites More sharing options...
AidanT Posted July 19, 2016 Author Report Share Posted July 19, 2016 Thanks Pete, Light bulb moment on the "Cones", Now I know what's being talked about, the cones I replaced about six months ago to poly ones as the bonnet was not sitting correctly aligned. Its probably not this then as the noise was there before and after the change - but I will have a play bouncing on the bonnet to see if I can replicate the sound. As BEn says though, another pair of ears from the club may well be the route to finding the source I will take a look at the bush, If I remove the top centre bolt can I replace from there if I jack up the car or do I need to strip the suspension down? I was going to do this in nthe winter as my next project as allthe bushes are pretty old in the front suspension - possibly original or at least from the 1980's! Aidan Link to comment Share on other sites More sharing options...
dougbgt6 Posted July 19, 2016 Report Share Posted July 19, 2016 Pete, I miss-read you advice as "rigorous exercise ON the bonnet" nearly choked on my cornflakes. I had a visible vibration (but no sound) on my bonnet. I cured it by adding a length of door rubber on the bonnet lip to butt up against the bulkhead, out of sight and no more vibration. Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 19, 2016 Report Share Posted July 19, 2016 the top shocker bush .. just undo the two nuts , no jacking nothing to disassemble do it car on ground theres no real load on the shocker spindle if it drops and disappears just pull it back up with fingers , if you ever have to dont grip the shaft without some decent protection or you mark it and then it leaks Pete Link to comment Share on other sites More sharing options...
AidanT Posted July 19, 2016 Author Report Share Posted July 19, 2016 HA Confused me again - Two nuts? until I just looked at the parts diagram! - I am pretty sure mine has just got a nylock nut on and not two separate ones! So No:64 is the thing I should be investigating then Thx Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 19, 2016 Report Share Posted July 19, 2016 Nothing wrong with a nyloc most modern versions would have one nyloc yes theres 2 64's one on top and one under the turret face, , if you do need to change them to get the lower one out just push the spindle down thro' the hole remove rubber and fiddle it back up to fit the top one , the nut screws down to a shoulder so only needs a good nip, there should be a flat on the spindle end to hold with adjustable spanner pete Link to comment Share on other sites More sharing options...
Ben Caswell Posted August 9, 2016 Report Share Posted August 9, 2016 Did we ever solve the mystery noise?? Link to comment Share on other sites More sharing options...
AidanT Posted August 10, 2016 Author Report Share Posted August 10, 2016 Hi Ben Well yes and no!! I have been able to minimise the noise by changing the tyre size from 185/60 to 175/70. The tyres needed replacing any way. The noise still occurs but only in certain circumstances where I think the suspension is bottoming out or getting close to that point. I am planning a front suspension rebuild this winter with new springs shocks and bushes so am hoping this will finally stop the remainder of the noise and the squeaks I also get. By the way does anyone know what quality shocks I should use? Don't particularly want adjustable ones but there doesn't seem to be anything else on the market without breaking the bank and are not more expensive than adjustables Aidan Link to comment Share on other sites More sharing options...
AidanT Posted August 10, 2016 Author Report Share Posted August 10, 2016 The suspension turret bushes were fine although a little tired btw Aidan Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now