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Strange noise

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VwinWilli Casual Dubber

36 posts · joined Apr 2016 ·

#1030006
Hi all,

Just wondering if anyone can help with some ideas on what this noise in the video is. I have a 68 fastback with a 70s engine init. Haven't owned it for long so been getting it going as it's been sitting for a while etc. Replaced fuel system with a new pump etc and fired up well. However just today I ran it up and revved the engine then suddenly heard this noise it comes on at random times and can stop for a while but then come back again it's like something is grinding or being thrown around. I'm hoping it's a bearing of some sort but any help would be appreciated

Cheers
Joe

hpnotch Seriously Crusin Dubber

133 posts · joined Nov 2012 ·

#1030012
It looks like the rubber bellows is missing from the fan housing - with the motor off reach into the air intake and see if there is anything floating around in the housing that is getting picked up and flung around by the fan.

1500S Custom Title Time!

1,418 posts · joined Mar 2005 ·

#1030023
VwinWilli wrote:Hi all,

Just wondering if anyone can help with some ideas on what this noise in the video is. I have a 68 fastback with a 70s engine init. Haven't owned it for long so been getting it going as it's been sitting for a while etc. Replaced fuel system with a new pump etc and fired up well. However just today I ran it up and revved the engine then suddenly heard this noise it comes on at random times and can stop for a while but then come back again it's like something is grinding or being thrown around. I'm hoping it's a bearing of some sort but any help would be appreciated

Cheers
Joe
Could be one of the fan housing retaining screws which are located behind the fan has unscrewed from the case and is rattling around between the fan and housing. If it is you'll have to remove rear engine mounting, generator, belt housing, alloy fan, rear half of fan housing and fan to allow the screw to be removed and a replacement put in. Maybe the other one in there is loose as well!!

Easier with engine out as it's easier to lock the flywheel to undo the fan retaining bolt!!!

yasdnil01 Seriously Crusin Dubber

135 posts · joined Nov 2008 ·

#1030042
in my years of experience I'd say it's a air lock in the gudgeon pin of the bearings in the hamster wheel 🤓

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 ·

#1030043
Could be one of the fan housing retaining screws which are located behind the fan has unscrewed from the case and is rattling around between the fan and housing
Yes that's it for sure I have had it happen 3 or 4 times makes scratching sound when the steel screw hits the alloy housing

Can be fix with engine in the car BUT easier to take engine out and do on the ground
I read it on FACEBOOK so it must be true


http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630


http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099


http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603


http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

VwinWilli Casual Dubber

36 posts · joined Apr 2016 ·

#1030122
Thanks for all the help, I'm going to tackle this problem with the engine in the car first over the next couple of days. I'll update my findings

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 ·

#1030131
you will have to make some minor tools to hold the fan while undoing the nut
I read it on FACEBOOK so it must be true


http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630


http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099


http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603


http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

VwinWilli Casual Dubber

36 posts · joined Apr 2016 ·

#1031387
Hello,

Just a follow up, removed fan and it's housing to discover behind the rear housing was a bolt that had loosened and was stuck in the old greese which was obviously being thrown around. Big relief. Thank you all for helping out 🙂