| [ Total Views: 671 | Total Replies: 11 | Thread Id: 65005 ] |
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 FunkBass
Commited Dubber
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 posted on September 14th, 2007 at 02:09 AM |
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Not a good vibration
Was cruising around tonight, then i got this god awful vibration happening in the bug. It happens when i give it a quick rev or when i back off the
accelerator. Was thinking it could be the engine or gearbox mounts. Any other suggestions? The vibratoion runs right thru the froor, but very evident
thru the shifter.
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64vwmark
A.k.a.: Mark Shepherd
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| posted on September 14th, 2007 at 02:25 AM |
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It sounds like the mounts might be gone
Beach Buggy
74 L Beetle
Mk4 Golf |
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FunkBass
Commited Dubber
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| posted on September 15th, 2007 at 02:56 PM |
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Oh bugger, i dont think its the mounts, was looking around while mate revved the engine, its more of a very nasty tinny rattling that is happening
almost the entire time the engine is running now! Doesnt sound like the exhaust baffles have let go, more like there is something terminal happening
in there. I am not happy. Any of the Adelaide boys free within the next week to have a listen for me and give some advice?
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greedy53
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| posted on September 15th, 2007 at 05:32 PM |
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check the rockers make sure one hasent letgo
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ratty 63
A.k.a.: Rossco
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| posted on September 15th, 2007 at 11:08 PM |
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Is it misfiring or still running on all cylinders?
If it is misfiring, check all the usual suspects (plugs, leads, rockers, manifold boots, ignition timing, etc)
If it is still running on all cylinders, check things like the fan (debris caught in it or blades missing), ignition timing, manifold boots .... were
you giving it a bit of a flogging? Drag racing style starts? Has the flywheel recently been re-attached to the engine? If so, you may have had the
flywheel come loose - lets hope not for your sake!
Most engine/gearbox vibrations are obvious through the gear stick as the shift rod is 'normally' connected to the gearbox with a coupling that
doesn't have any slack in it - the rest of the car is shielded from these vibrations by the engine and gearbox mounts.
Let us know what it is....
R 
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 matberry
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| posted on September 16th, 2007 at 08:54 AM |
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Or cam gear loose from incorrect backlash.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
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frank2112
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| posted on September 16th, 2007 at 08:56 AM |
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Mine started as a similar noise and it ended up being the Crankshaft pulley was loose. Unfortunately it has damaged the end of the crank and now it's
rebuild time.
Spare the Duct tape, spoil the job - Red Green
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FunkBass
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| posted on September 16th, 2007 at 11:34 AM |
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No misfiring at all, just this God awful noise! A closer listen and it seems to be coming from the fan shroud, so I'm hoping it's just crap logded
in there, it was a windy night with lots of debris from trees flying round when it happened. Will take the shroud off and have a look, more details
tomorrow, my kids need a bit more attention than the bug right now! It sure is a learning curve with these engines!
No drag racing, not really driving it too hard, nothing has been touched on the motor as far as flywheel, etc.
[ Edited on 16-9-2007 by FunkBass ]
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greedy53
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| posted on September 16th, 2007 at 11:51 AM |
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i just replaced a fan that had cracked what a bloody noise that was good luck
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bajachris88
A.k.a.: Chris Leete
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| posted on September 16th, 2007 at 01:16 PM |
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I had a similar thing from a accelerator cable.
seemedto be geting brushed by the fan.
Would explain y u heard it when you were off the throttle cause tension is released in the cable...
(ô_!_/ô) (ô_!_/ô)
69' baja: kombi box, thing spindles, irs, disc front, type 3 rear drums, 2 inch lift kit, 31x10 rears. 
New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta! |
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matberry
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| posted on September 16th, 2007 at 10:32 PM |
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Before removing fanhousing you can stick your hand around the back of the fan hsing (engine off of course) and check for foreign matter in the fan. A
bit of electrical tape is enough to make some pretty weird noises. Removing the gen or alt only, with only loosening fan housing, is the easiest way
to access fan if it requires replacement.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
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FunkBass
Commited Dubber
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| posted on September 17th, 2007 at 07:34 PM |
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Well the light tinny rattle has developed into the all too familiar sound of a bearing knocking! Damn. Car is now for sale as is in the for sale
section, thanks all for the advice.
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