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Porsche engine yoke strong enough?
I just received the motor yoke to attach to my engine stand and noticed there are two mounting points only. I'm use to clamping on the standard 4 point. Is this strong and safe enough to hold my 3.2 engine completely assembled? And if so do I need to install bolts or just slide spacers over the existing studs?
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1986 Porsche Carrera  1997 Porsche Boxster (Sold) :0 1995 911 Cabriolet (Sold)  1971 Porsche Targa 911E (Sold) 
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12-11-2011, 06:00 AM
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Hi
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Hopefully someone will chime in on this.
Two point just doesn't seem right to me.
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"A good sense of humor is the best thing to have in your toolbox when working on these cars." Quote by Charles Freeborn, Pelican. |
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12-11-2011, 06:03 AM
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ROW '78 911 Targa
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2 points with the flange mounted flush to the case to spread the load is enough.
Do a search on Yoke and you will see many pictures of them doing exactly what you are asking about.
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Dennis Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C Need a New Wiring Harness? PM or e-mail me. Search for "harnesses" in the classifieds. |
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12-11-2011, 06:30 AM
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Location: mt. vernon Wa. USA
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3.6 on the stand
I've had quite a few engines on this stand. Here is the heaviest....a monster 3.6.
The yoke works just fine and is designed to mate with one case half, allowing you to tear down your engine and split the case, while mounted to the stand. regards, al 
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[B]Current projects: 69-911.5, Previous:73 911X (off to SanFrancisco/racing in Germany).77 911S (NY), 71E (France/Corsica), 66-912 ( France), 1970 914X (Wisconsin) 76 911S roller..off to Florida/Germany RGruppe #669 http://www.x-faktory.com/ |
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12-11-2011, 06:39 AM
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Matt. 83 911SC 85.5 944 NA - Sold |
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12-11-2011, 07:03 AM
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Thank you for the rapid feedback.
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1986 Porsche Carrera 1997 Porsche Boxster (Sold) :0 1995 911 Cabriolet (Sold) 1971 Porsche Targa 911E (Sold)
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12-11-2011, 07:03 AM
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Call me stupid if you like but I wouldn't do that.
I understand it may be common practice but I would not load up the yoke like that. You're asking for trouble IMO. A naked engine would be fine but that just looks like an accident waiting to happen. Once the engine is together (basic main engine, exhaust only) you should mate it up to the trans on a lifting table or similar and then put on the ancillaries/fuel injection etc. Quote:
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12-11-2011, 07:15 AM
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I have after market version and the piece that attaches up against the engine is about 1/4 inch thick. I'm not to comfortable with it.
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1986 Porsche Carrera 1997 Porsche Boxster (Sold) :0 1995 911 Cabriolet (Sold) 1971 Porsche Targa 911E (Sold)
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12-11-2011, 07:54 AM
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ROW '78 911 Targa
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E-Bay Yoke in my garage a month or 2 ago!
No problem. Mounted on left side to allow oil cooler to be mounted.  
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Dennis Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C Need a New Wiring Harness? PM or e-mail me. Search for "harnesses" in the classifieds. |
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12-11-2011, 08:02 AM
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ROW '78 911 Targa
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One more (crappy picture)
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Dennis Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C Need a New Wiring Harness? PM or e-mail me. Search for "harnesses" in the classifieds. |
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12-11-2011, 08:06 AM
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Same one in my photo above.
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Matt. 83 911SC 85.5 944 NA - Sold |
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12-11-2011, 08:07 AM
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No Porsche has no idea what their doing.
Jesus. |
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12-11-2011, 08:08 AM
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ROW '78 911 Targa
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Quote:
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Dennis Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C Need a New Wiring Harness? PM or e-mail me. Search for "harnesses" in the classifieds. |
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12-11-2011, 08:13 AM
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There seems to be some precedent set here....by the factory. Granted , that looks like a "T" MFI motor down at the end of the line, so it's a bit lighter than the 3.6. I've rebuilt a few engines on my stand, from 2.2, 2.7 thru 3.6...absolutely no problems, whatsoever with the right yoke that distributes the load properly.
You never know...the Porsche tool designers may have thought about this a bit.  regards, al
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[B]Current projects: 69-911.5, Previous:73 911X (off to SanFrancisco/racing in Germany).77 911S (NY), 71E (France/Corsica), 66-912 ( France), 1970 914X (Wisconsin) 76 911S roller..off to Florida/Germany RGruppe #669 http://www.x-faktory.com/ |
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12-11-2011, 11:38 AM
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By the same token: Only 4 studs to hold on the transmission and transfer all the torque of an engine that can be turbocharged past 700 horsepower! GAAACKKK!!!
But obviously it works because no one has failure issues on this part of the design. The yoke is way past plenty strong. The important part of the strength is having a strong, stiff mating surface to spread the load. If the mating surface can flex then you can have an issue. The studs do not support ANYTHING with any side loading. They are simply supplying a clamping load so that the width of the yoke can do ALL of the supporting. This is much ado about nothing. This is a lack of understanding about the structural issues involved. The factory didn't screw this up as more then 45 years with zero issues has shown.
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- "Speed kills! How fast do you want to go?" - anon. - "If More is better then Too Much is just right!!!" - Mad Mac Durgeloh -- Wayne - 87 Carrera coupe -> The pooch. |
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12-12-2011, 08:22 AM
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Quote:
I agree with the other posts. Porsche knew what they were doing. That yoke is plenty strong. ( Porsche tool P201) not the Ebay crap.   
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1974 sahara beige 911 targa 1982 chiffon 911sc 1985 prussian blue metallic carrera |
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12-12-2011, 10:38 AM
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There is nothing to worry about.
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12-12-2011, 11:13 AM
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I have the ebay crap...will it work?
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1986 Porsche Carrera 1997 Porsche Boxster (Sold) :0 1995 911 Cabriolet (Sold) 1971 Porsche Targa 911E (Sold)
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12-13-2011, 02:29 AM
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Quote:
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Matt. 83 911SC 85.5 944 NA - Sold |
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12-13-2011, 03:22 AM
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I've had a competely assembled turbo engine on one (including the complete turbo/exhaust/fuel system/intercooler etc) - no problems.
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12-13-2011, 05:10 AM
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Gretchen
Heinz
1983 Porsche 911SC
1974 Porsche 911 targa 2.7
