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 Post subject: It goes clunk
PostPosted:Tue Jul 19, 2011 1:48 pm 
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Big Block
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Joined:Tue Feb 23, 2010 12:40 pm
Posts:3245
Car Details:'79 Camaro, 350 V8
Location:South Bucks
So here's an interesting one!

When i move the car forward or backward (pushing it of course, in neutral with emergency brake off) it rolls a couple of feet or so then gets really hard to move (no, i'm not on a hill :lol: ) and i literally have to put my leg against the wall to get enough force to move it and then i hear a dull clunk and then it starts to move again (then of course i run out of room in the garage). This clunk seems to be in the same place as if you move it to the front and back of the garage it will do it in the same place and once when i pushed it out into the drive it did the same after a small distance. Any idea what on earth this could be coming from / causing this? the sound comes from the rear half of the car.

Many thanks!

Ray

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It goes clunk

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 Post subject: Re: It goes clunk
PostPosted:Tue Jul 19, 2011 5:37 pm 
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Big Block
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Joined:Mon Feb 09, 2009 12:41 pm
Posts:2451
Limited slip diff???

cheers...Nige

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 Post subject: Re: It goes clunk
PostPosted:Tue Jul 19, 2011 7:06 pm 
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Big Block
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Joined:Tue Feb 23, 2010 12:40 pm
Posts:3245
Car Details:'79 Camaro, 350 V8
Location:South Bucks
yes, it supposedly has a posi rear end. Is that a characteristic of that? something to be worried about? cheers!

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 Post subject: Re: It goes clunk
PostPosted:Mon Jul 25, 2011 1:52 pm 
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Big Block
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Joined:Tue Feb 23, 2010 12:40 pm
Posts:3245
Car Details:'79 Camaro, 350 V8
Location:South Bucks
Ok so i jacked up by the rear diff and spun the wheels loads back and forth (i swear i did this when i was 4 on toy cars. some thigns don't change) and didn't hear the clunk at all. Seemed to get a little bit harder to turn the wheel at some points, could this maybe just the fluid levels not having ciruclated for a while or something? also worked out the rear end has a ratio of about 3.25. is this about where it should be?

Cheers!

ray

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 Post subject: Re: It goes clunk
PostPosted:Tue Jul 26, 2011 11:56 am 
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Big Block
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Joined:Mon Feb 09, 2009 12:41 pm
Posts:2451
Quote:
Ok so i jacked up by the rear diff and spun the wheels loads back and forth (i swear i did this when i was 4 on toy cars. some thigns don't change) and didn't hear the clunk at all. Seemed to get a little bit harder to turn the wheel at some points, could this maybe just the fluid levels not having ciruclated for a while or something? also worked out the rear end has a ratio of about 3.25. is this about where it should be?

Cheers!

ray
Hi Ray, the 3.25's are a great allround gear for street use, unless you want to spend loads of money on fuel or go drag racing. Sometimes witht he Posi the clutches tend to "stick" together & will produce a clunking noise, normally at low speeds when cornering or reversing. You can get an additive from Hausers that should cure this, I had to do it with mine because it had been standing for so long hth

cheers...Nige

ps how's the car coming along any updates??

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 Post subject: Re: It goes clunk
PostPosted:Tue Jul 26, 2011 1:20 pm 
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Big Block
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Joined:Tue Feb 23, 2010 12:40 pm
Posts:3245
Car Details:'79 Camaro, 350 V8
Location:South Bucks
Thanks Nige,

Good tip on the fluid! sorry to ask such as silly question then , but if i remove the diff cover, will the fluid spill out? i did wonder how you top it up or check fluid levels.

Car is coming so slowly. just at the point where i'm respraying a few parts that have been chipped from panel aligment etc and the door (wasn't straight) so gota do that, the cowel, finish the interior (headliner and trim parts) install windows, check and maks sure light wiring is correct (new harness, may need modifying for MOT) install front n rear bumpers, instlal new shocks (airs have massive leak so going in the bin), install exhaust (have over axle pipes and new headers, so evertyhitng inebtween those (x pipe likely) then cut n polish. much shorter list than last year :)

Are we gonna see you at any meets anytime? santa pod or something?

Cheers!

Ray

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How to post pics: When writing a message, scroll down and use the "attach file" option. Where possible, a photo sharing service can be used such as Flickr, Imgur etc. The image location (usually ending in .jpg) can be copy and pasted between the ][ brackets that appear when you click the 'Img' button (you can find this button at the top of the message box).

How to post youtube vids: Click on the 'youtubeHD' button at the top of the message box and in the middle of the ][ brackets that just appeared, copy and paste everything from the youtube web address that appears after the = sign i.e if this is the url: https://www.youtube.com/watch?v=K2cNqaPSHv0 just copy "K2cNqaPSHv0").


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 Post subject: Re: It goes clunk
PostPosted:Tue Jul 26, 2011 1:53 pm 
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Big Block
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Joined:Mon Feb 09, 2009 12:41 pm
Posts:2451
Quote:

Are we gonna see you at any meets anytime? santa pod or something?

Cheers!

Ray
Hi Ray, I doubt it very much as I've so much going on in my home life at the moment, plus I'm not really one for shows, though I was toying with going to Billing later in the year, as believe it or not, my wife wants to go with friends of ours who have a 4th Gen. She likes camping there for some odd reason :crazy:

cheers...Nige

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Too much power...not enough hands!!


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 Post subject: Re: It goes clunk
PostPosted:Tue Jul 26, 2011 1:56 pm 
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Big Block
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Joined:Mon Feb 09, 2009 12:41 pm
Posts:2451
Quote:
Thanks Nige,

Good tip on the fluid! sorry to ask such as silly question then , but if i remove the diff cover, will the fluid spill out? i did wonder how you top it up or check fluid levels.
There's a threaded, internal square plug on the side of the diff casing, undo it & top up from there until oil runs out. If it's already full you'll need to drain some out, I pulled it out with a screwdriver :lol: , as I didn't want to break the diff cover seal again hth

cheers...Nige

_________________
Too much power...not enough hands!!


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