09-27-2007, 01:18 AM
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Suspension knocking?
My 33 has just developed a knocking noise when accelerating from rest. I've had a quick look at the suspension components and nothing appears to be loose or worn. Is there any common faults that would cause this problem?.
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1987 1.7 QV. Everyday driver
1986 1.5 Sprint QV under resto
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09-27-2007, 02:51 AM
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front or rear? Sometimes the rear trailing arms at the front move rearwards but the bush stays put, and the arm can rub on the body at the mount...probably develops due to hard braking.
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09-27-2007, 04:00 AM
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my 33 does that too, it happens on my passenger's side front suspension. sometimes it knocks a lot, sometimes when accelerating or turning and sometimes u don't hear anything at all for a period of time.
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09-27-2007, 04:24 AM
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Front end
Sounds like it is coming from the drivers side front, but sound is deceiving it could be travelling from anywhere.
I thought it may have been the suspension arms moving on worn bushes but I can't easily move any of them by hand.
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1987 1.7 QV. Everyday driver
1986 1.5 Sprint QV under resto
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09-27-2007, 05:05 AM
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Might be cracks in the front suspension. One of mine makes this noise from one side. The other car has been fixed and no longer makes this noise.
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Keith
85 Quattro Monte Carlo
33 GCL
Previous cars
Alfetta
Guilia Sprint GTV
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09-27-2007, 06:15 AM
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 Quote:
Originally Posted by 77SudTi
front or rear? Sometimes the rear trailing arms at the front move rearwards but the bush stays put, and the arm can rub on the body at the mount...probably develops due to hard braking.
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Any number of things can cause suspension noise, from loose wheel nuts, loose suspension bolts or worn bushes, start checking obvious things. Good luck.
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- '77 Sud Ti - Project car - C pillar "Ti" stickers needed!!
- '88 series II 33 1.7 Weber'd - More mint than yours!
Last edited by 77SudTi; 09-27-2007 at 06:20 AM.
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09-27-2007, 07:54 AM
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Quote:
Originally Posted by 77SudTi
Or another way to see whats going on is to measure the wheel base, centre to centre on each side, if theres a discrepancy, a bush is out of place, or your car has been in a crash...lets hope not...
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Hugh.
Current Cars:
- '90 75 TS, koni shod
- '69 series I 1750 GTV (TS project)
Previous Cars:
- '91 series III 33 16v QV
- '89 series II 33 1.7 i.e
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09-27-2007, 04:03 PM
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Quote:
Originally Posted by hughqv
I wouldn't go on that, I was taking this measurement on all four of the 33's we have had, and all show the passenger side to be shorter than the drivers, by almost 20mm! Or was it the other way around, i forget. But it would be interesting if someone else can do this on there cars and report. Not sure what the caster is doing.
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- '77 Sud Ti - Project car - C pillar "Ti" stickers needed!!
- '88 series II 33 1.7 Weber'd - More mint than yours!
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09-27-2007, 06:57 PM
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Did this at the wheel aligner with each car. 
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Hugh.
Current Cars:
- '90 75 TS, koni shod
- '69 series I 1750 GTV (TS project)
Previous Cars:
- '91 series III 33 16v QV
- '89 series II 33 1.7 i.e
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09-27-2007, 08:44 PM
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i measure 2460 one side and 2460-2462 or 3 on the other, ( thats with my wifes help holding the tape measure) 
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09-27-2007, 08:49 PM
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alright im gonna go re measure my sisters car, maybe the wheels wernt straight ahead. 
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Hugh.
Current Cars:
- '90 75 TS, koni shod
- '69 series I 1750 GTV (TS project)
Previous Cars:
- '91 series III 33 16v QV
- '89 series II 33 1.7 i.e
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09-27-2007, 10:16 PM
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Quote:
Originally Posted by hughqv
alright im gonna go re measure my sisters car, maybe the wheels wernt straight ahead. |
spottie, getting back to the original question of knocking noise, have you eleiminated the exhaust hitting somewhere?
try to put your foot on the brake and heel the throttle at high idle at the same time, and then suddenly let the clutch up to release point, does it do the knock underneath too?
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lately: Giulia super - sold in 4 hrs!, 82 Sud ti - bloody thing caught fire!
Driving: Peugeot 205gti, looking for: non-Alfa car
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09-28-2007, 01:49 AM
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That's a good idea, I never considered the exhaust. I'll check tomorrow and I'll also measure the wheel base each side and report back. Thanks for the help so far.
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1987 1.7 QV. Everyday driver
1986 1.5 Sprint QV under resto
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09-28-2007, 07:28 PM
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Quote:
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my 33 does that too, it happens on my passenger's side front suspension. sometimes it knocks a lot, sometimes when accelerating or turning and sometimes u don't hear anything at all for a period of time.
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09-29-2007, 03:20 AM
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Alright I measured the wheel base, was close enough to the same each side 2467mm. Tried the brake ,throttle, clutch thing, no noise . I'll check the cv's next , but they where o'k when I looked last.
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1987 1.7 QV. Everyday driver
1986 1.5 Sprint QV under resto
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