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GAFB
Join Date: Dec 1999
Location: Raleigh, NC, USA
Posts: 7,842
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Several BMWs |
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05-09-2008, 09:41 AM
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MrHuebler
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Been there, done that.... within the first month i had mine, 83mod 3.o engine... Got a paper cloth in between the belt and pully, belt broke, inastalled a new one, ccw'd the engine, tensioner collapsed... Had a terrible rattling noise at 1200-1500 rpms. Dropped the engine 10 inches without loosing the transmission mount, narrow workspace, but accesable.
Here you can see that the tensioner has collapsed.  Here is the slack in the chain.  I was lucky that the chain didnt jump a tooth and ruin my engine. Had a top end overhaul when i got the car, so that would hurt. Easy fix if its the same problem. Reading the other posts, maybe its possible for the chain to jam between something and lock the engine. Espen 
Last edited by MrHuebler; 05-09-2008 at 02:10 PM.. |
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05-09-2008, 02:05 PM
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05-09-2008, 02:49 PM
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"Der Hellion"
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Todays musings and observations. Just got back from the front, which is the back of the car. Put in battery with fresh charge, solenoid engaging in and out with twist of key. No turning however even with sparkplugs out. Bought a medium duty rubber strap wrench at sears and clamped it on option pully on crank. Turned clockwise and the strap (fanbelt like) snapped. Now I removed muffler and splash pan and waiting on timing cover gaskets. Thanks one and all for your advice. Anything else I could think about whilst waiting. Roger
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05-10-2008, 02:55 PM
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Band.
Join Date: Dec 2003
Location: Denver, CO
Posts: 13,378
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Roger, I'd suggest that you don't try to turn the motor with anything - not even the starter - until you get the chain covers off and take a look. if you just try to muscle it things are going to get really expensive, so be patient.
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1983 SC Coupe 1963 BMW R60/2 1972 Triumph Tiger 1995 Triumph Daytona SuperIII |
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05-10-2008, 03:08 PM
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GAFB
Join Date: Dec 1999
Location: Raleigh, NC, USA
Posts: 7,842
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Your camtrain is bound up somewhere, stop messing with it. At this point you're going to need to carefully inspect your sprockets, I am worried about stress/damage from all the fiddling. Get the chain covers off.
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Several BMWs |
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05-10-2008, 07:01 PM
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"Der Hellion"
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Thanks
Thank you Mr. Huebler for the pics. After seeing the slack in timing chain, even I feel disheartened. Thanks all for your replies and advice. In the finance world free advice is the most expensive stuff in the world. In the Pelican BB its gold. Happy Mothers Day to all, and women too. Roger Tomorrow,"uncorking the covers".
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05-11-2008, 10:01 AM
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"Der Hellion"
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tues a.m. update
Both timing covers came off today. A word of caution to folks who'll pull these. Get ready for the flood. Upon observing and inspection all is fine. No dislodging or binding. About 1/8 inch in up and down chain movement. I guess its now on to the starter. Any special tools needed to remove starter? I have allen bolts on this engine. Thanks Roger
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05-13-2008, 05:59 AM
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Registered
Join Date: May 2001
Location: Peoples Republic of Long Beach, NY
Posts: 21,140
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so you wiggled the crankshaft back and forth and couldn't see and feel the chain binding inside the engine at the intermediate shaft ?
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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05-13-2008, 07:11 AM
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"Der Hellion"
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re play
The binding is at the crank itself, not the the chain or sprockets. There is no CW or CCW movement (play) at crank. Roger
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05-13-2008, 07:22 AM
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Have you tried to turn the motor with the clutch pedal pressed in? I have heard of transmissions getting stuck in two gears at once or binding up in some way or another and not allowing the engine to turn. Also, check to make sure the starter is not stuck engaging to the flywheel. Both are long shots but this is a weird issue...
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1972 Porsche 914 Project 2000 BMW M5 1973 Aermacchi 350 |
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05-13-2008, 07:31 AM
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Registered
Join Date: May 2007
Posts: 136
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Rector, jack the rear of the car up and see if you can rotate the rear tires with the transmission in neutral. Make sure you have the parking brake released when you do it of course. Another thought...check all the bolts holding the transmission to the engine. I suppose a misaligned tranny could be binding the engine. Long shot.
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I am become Bob, Destroyer of Boats. 1986 911 (The Little Red Rocket)... ...and a bunch of other cars/boats/planes that are sold, sunk or crashed. |
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05-13-2008, 08:36 AM
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"Der Hellion"
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In reply to Ronin. Come to think of it. Can the intermediate shaft be inspected with a mirror and flashlight to make sure chain is not galled or sprocket teeth fine? thanks Roger
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05-13-2008, 08:47 AM
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Registered
Join Date: May 2001
Location: Peoples Republic of Long Beach, NY
Posts: 21,140
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anytime I've seen the chain caught up in there you would be able to rock the crank back and forth about 1/4 inch... But you're reporting that the crank is frozen solid. i never tried looking at the shaft with a mirror. It'd be an easy look-see with a borescope.
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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05-13-2008, 10:50 AM
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GAFB
Join Date: Dec 1999
Location: Raleigh, NC, USA
Posts: 7,842
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Photos of both chain case areas would be helpful. Also, if you did not eliminate the transmission and starter from suspicion prior to this, you should do so now. See advice above.
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Several BMWs |
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05-13-2008, 10:58 AM
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"Der Hellion"
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All was fine in aft section. Timing chain,tensioners,ramps and sprockets were in great shape. Just got done buttoning up covers and now on to the starter. later Roger.
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05-18-2008, 09:59 AM
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"Der Hellion"
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hey folks
I been down for scheduled and unscheduled maintance. Back to the engine lock and mental health. Roger
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05-30-2008, 09:14 AM
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"Der Hellion"
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back to the starter
All, After observing all Porsche protocols on engine lock. The engine timing covers removed chain and tensioners inspected, engine sump pulled and oil drained and filtered with no shards detected by visual or magnet. Now onto the starter. Any hints, time savers or caveats on this operation . thanks Roger
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06-10-2008, 07:04 AM
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Registered
Join Date: Jan 2001
Location: Kirkland, Washington
Posts: 1,095
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If you can't turn the engine over with a wrench, you won't be able to turn it over with the starter. The problem lies elsewhere (unless of course you've alse fried the starter trying to start a seized engine.)
Please try to figure out why the engine is not turning over before you apply additional force.
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Jamie79SC |
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06-10-2008, 01:33 PM
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love how all the post end with "roger". like we are all on a CB radio
 this is a stange problem. so the car is positively in neutral? back wheels up in the air? taking out the starter is a piece of cake. one bolt is easy, the other slightly more difficult. you need to hug the tranny so you can get both hands near the bolt to work on it. sounds like your car needs a hug anyways. what city are you in? if you were near me, i would drop in surely. (sorry to call you surely, roger, roger)
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poof! gone |
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06-10-2008, 05:33 PM
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Blue Meanie
Hers
1970 Porsche 911 t 2.2 
