Steve Lovelock
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| posted on 14/4/12 at 05:21 AM |
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knocking in the running gear - but where?
I am running a type-9 and Sierra XR4x4 LSD and drive shafts and am experiencing a few knocking noises. Essentially when I pull away and often if I
roll off the power then back on again I get a knocking noise coming from the drive train and I don't know where. It sounds like something is
loose but I know that it is isn't.
Any ideas?
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jollygreengiant
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| posted on 14/4/12 at 07:22 AM |
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Rear drive shaft CV joint(s).????????
Best description I can come up with of this noise would be, two heavy hammers being banged together (head to head) repeatedly and very, very
quickly.
HTH
Another possibility (IF bolt on drive shafts) is that of the outer CV to drive stub bolt heads making contact with the upper wishbones where the
adjuster tube is for the upper adjuster.
[Edited on 14/4/12 by jollygreengiant]
Beware of the Goldfish in the tulip mines. The ONLY defence against them is smoking peanut butter sandwiches.
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mookaloid
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| posted on 14/4/12 at 07:53 AM |
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diff mounting bolts?
"That thing you're thinking - it wont be that."
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franky
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| posted on 14/4/12 at 08:37 AM |
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quote:
Originally posted by mookaloid
diff mounting bolts?
This. Seems like a torque reaction so something around the diff.
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Chippy
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| posted on 14/4/12 at 10:09 AM |
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I had similar, and it turned out to be the UJ's on the drive shafts. Although they didn't appear to be worn, when i changed them the
knocking had gone. HTH Ray
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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britishtrident
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| posted on 14/4/12 at 10:42 AM |
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First port of call is to check the propshaft UJ flange bolts are tight, they tend to slacken off.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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rusty nuts
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| posted on 14/4/12 at 02:19 PM |
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If you haven't managed to fix it before we can have a look at Stoneleigh Steve.
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Steve Lovelock
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| posted on 14/4/12 at 09:00 PM |
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Thanks for the tips, I had a new drive shaft made when I built the car and as I have only done 5,000 miles I'd be disappointed if it was the uj
joints. How would I check that? I'll certainly look at the bolts on the diff though. The car was out for its annual MOT which it passed so
I'll definitely be at Stoneleigh now.
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