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Registered
Join Date: Jul 2001
Location: Portland, Oregon USA
Posts: 16
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911 TK motor, interference or not?
I just scored a 2.4L 911 TK motor from a USA/Canada 1973 911 with manual transmission. The crank turns, but it doesn't turn the cams. The guy I got it from thinks it is the intermediate shaft, and gave me a replacement. I was wondering if this motor is an interference type or not. I am trying to decide whether to rebuild it or not. There is no heinous noises when you turn the crank, so I think that things may not be too bad inside (aside from the cams not turning). I took the covers off, the chains look good.
Any ideas would be appreciated. |
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04-25-2002, 06:34 PM
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Registered
Join Date: Apr 2001
Location: Linn County, Oregon
Posts: 48,533
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If the tensioner (s) collapse? The way I understand it, ALL air cooled 911 engines can be interference engines..
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04-25-2002, 06:42 PM
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Registered
Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,453
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oh yeah, could be the valves have all been bent out of the way after some catastrophic disaster. doesn't sound good. rebuildable core maybe. cheap?
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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04-25-2002, 06:43 PM
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Senior Member
Join Date: Feb 2000
Location: Lacey, WA. USA
Posts: 25,310
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Well golly, if you took the covers off then what did you see? If the cams aren't turning then are the chains turning? If not, then is the internediate shaft not turning? With the covers off you can see all that. The 924 may have had a non-interference engine but I doubt that any 911 would. So no, if your crank is turning 360 degrees and the cams aren't turning, then that would be a pretty bad sign. I think John said all that.
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Man of Carbon Fiber (stronger than steel) Mocha 1978 911SC. "Coco" |
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04-25-2002, 07:41 PM
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Senior Member
Join Date: Apr 2001
Location: Finland
Posts: 1,214
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the 46mm camshaft nut loose and the dowel pin broken or missing? Thats the only idea that comes into my mind...or the chains are broken.
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04-25-2002, 09:16 PM
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Warren Hall Student
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What ever the reason. The case has to be split to repair this motor. So you might as well dissassemble and investigate. Then you can decide if it's worth repairing or part it out.
Bobby |
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04-26-2002, 01:49 AM
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Oh -- you mean the one on EBay right now. The $250 current price might be a good deal for parts, but it will require a total teardown.
Are you feeling lucky??? 
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John '69 911E "It's a poor craftsman who blames their tools" -- Unknown "Any suspension -- no matter how poorly designed -- can be made to work reasonably well if you just stop it from moving." -- Colin Chapman |
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04-26-2002, 03:33 PM
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73' Porsche Targa
1969 Porsche 911E 2.0 E
