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Joes924Racer
Joined: 03 Nov 2002
Posts: 11964
Location: Oregon, Denver Colorado native!
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 Posted: Wed Jun 25, 2003 5:59 pm Post subject: Broke another belt tensioner. |
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Right as I close to my house about 2 houses down the
belt tensioner gave out [this is the 2nd one Ive broke like this.
I guess you can probly blow a head gasket this way,Im glad I wasnt on the freeway or at any kind of speed. I was doing about 15 mph.
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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo. |
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924RACR
Joined: 29 Jul 2001
Posts: 8968
Location: Royal Oak, MI, USA
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| Posted: Wed Jun 25, 2003 10:12 pm Post subject: |
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Dayum! Joe, is it possible you're overtensioning your belt? That can't be right, if you're using a new part...
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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Zuffen
Joined: 31 Jul 2001
Posts: 1427
Location: Owasso, Oklahoma 74055
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| Posted: Wed Jun 25, 2003 10:41 pm Post subject: |
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can't be new as they don't make that type anymore, unless Joe is finding old stock...
I would say the the belt is too tight and quit using a 5lb hammer to adjust the tension... 
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Bob Dodd - 924turbo@cox.net
931 1982, 944 1982 euro, 924S 1988SE, 93 968 tip 06 Silver Cayenne S, 06 Black Cayenne S
I have Way too many cars, parts for the 931,944 and 951 |
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924 turbo
Joined: 02 Nov 2002
Posts: 1566
Location: Simi Valley, CA, USA
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| Posted: Wed Jun 25, 2003 11:38 pm Post subject: |
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You may remember that Joe totally cheaped-out and installed a used belt tensioner. When a new one is $15. I don't want to say I told you so, but I told you so.
Some things might be worth skimping on. You just lost another belt, right? And your time? What a waste of money.
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Jon Furst |
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81turbo
Joined: 03 Nov 2002
Posts: 1065
Location: Oakland, CA
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| Posted: Wed Jun 25, 2003 11:41 pm Post subject: |
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| New tensioner or not, I find it hard to believe that one person could break two tensioners within a year or so. Something must be going wrong, or put together wrong. This is why I believe engine assembly is best left to a professional. What’s next another bearing? |
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Lizard
Joined: 03 Nov 2002
Posts: 9364
Location: Abbotsford BC. Canada
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| Posted: Thu Jun 26, 2003 12:59 am Post subject: |
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I wouldn't say best left to a proffensional, but I would say not to use second hand parts, like piston rings right Joe. and yah I would have to say it isbeing over tightened or struck with something before installation,
hey joe aren't you glad you didn't shave your head or deck your block, or have a wild cam, if you had it would have been new time for valves
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3 928s, |
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81turbo
Joined: 03 Nov 2002
Posts: 1065
Location: Oakland, CA
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| Posted: Thu Jun 26, 2003 1:15 am Post subject: |
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On this board we have seen a few "weekend warrior mechanic" engine rebuilds go bad. Last time I checked properly built engines don't eat bearings, destroy belt tensioners, or have any other problems for that matter. Building an engine and then replacing the bearings, rings, or anything else this soon after seem pretty ridiculous to me. I am not bashing anyone, but building engines is not easy work. Sure working on your own car is necessary for many including myself, but I will leave things of this nature to a pro. Hell can anyone help me neuter my dog this weekend, having a pro do it is just too expensive.
Last edited by 81turbo on Thu Jun 26, 2003 2:00 am; edited 1 time in total |
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78 924 N/a
Joined: 20 Mar 2003
Posts: 769
Location: Pacific N.W.
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| Posted: Thu Jun 26, 2003 1:23 am Post subject: |
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| Quote: | | Hell can anyone help me neuter my dog this weekend, having a pro do it is just too expensive. |
I suppose your going to use a pocket knife and a HAMMER too, huh? 
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1978 924 n/a |
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Lizard
Joined: 03 Nov 2002
Posts: 9364
Location: Abbotsford BC. Canada
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| Posted: Thu Jun 26, 2003 1:38 am Post subject: |
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| 78 924 N/a wrote: | | Quote: | | Hell can anyone help me neuter my dog this weekend, having a pro do it is just too expensive. |
I suppose your going to use a pocket knife and a HAMMER too, huh? |
I would have sad chainsaw but oh well
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3 928s, |
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78 924 N/a
Joined: 20 Mar 2003
Posts: 769
Location: Pacific N.W.
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| Posted: Thu Jun 26, 2003 2:03 am Post subject: |
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I havn't had a TIMING belt break yet, but dosn't the engine just stop running?? 
I have had an alternator belt break,THAT is a really good way to blow a head gasket   
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1978 924 n/a |
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81turbo
Joined: 03 Nov 2002
Posts: 1065
Location: Oakland, CA
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| Posted: Thu Jun 26, 2003 2:05 am Post subject: |
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No no I went out and carefully purchased all of the proper tools and parts to do the job, but I just want to preform the procedutre myself to save money. I really enjoy working on my dog.
http://www.neuticles.com/ |
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Lizard
Joined: 03 Nov 2002
Posts: 9364
Location: Abbotsford BC. Canada
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| Posted: Thu Jun 26, 2003 2:14 am Post subject: |
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| 78 924 N/a wrote: | | I havn't had a TIMING belt break yet, but dosn't the engine just stop running?? |
on a NA engine w/ a stock cam yes, with a wild cam it would probably make it an interference engine, or on a turbo car (931) it is an interference engine, so yes it would make it so the car wont run, for a LONG time, until you get new valves that is
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3 928s, |
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78 924 N/a
Joined: 20 Mar 2003
Posts: 769
Location: Pacific N.W.
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| Posted: Thu Jun 26, 2003 2:20 am Post subject: |
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| Lizard wrote: | | 78 924 N/a wrote: | | I havn't had a TIMING belt break yet, but dosn't the engine just stop running?? |
on a NA engine w/ a stock cam yes, with a wild cam it would probably make it an interference engine, or on a turbo car (931) it is an interference engine, so yes it would make it so the car wont run, for a LONG time, until you get new valves that is |
What's a "wild" cam? I mean how much more than stock? Dosn't Joe have a cam and high comp. pistons? I wonder if piston made a smack sound when belt broke??
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1978 924 n/a |
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Lizard
Joined: 03 Nov 2002
Posts: 9364
Location: Abbotsford BC. Canada
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| Posted: Thu Jun 26, 2003 3:03 am Post subject: |
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a wild cam I would say is a stage II or stage III, and joe is running stock pistons and cam
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3 928s, |
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924RACR
Joined: 29 Jul 2001
Posts: 8968
Location: Royal Oak, MI, USA
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| Posted: Thu Jun 26, 2003 5:53 am Post subject: |
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You think it's bad to blow a headgasket by breaking the alt belt - I blew mine by flinging the alt belt off at 5000 rpm! Belt was still good when returned by the corner workers... instant overheat...
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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