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Old January 21st, 2002, 10:29 AM   #1
LouisE
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2 piece engine case

Can someone tell me why the Porsche engine case is in two pieces. The American cars I am familiar with have a one piece cast block (plus the heads, manifold etc.) and I just wondered why Porsche cases are 2 piece? Is it something to due with the fact that the engine is a boxer design and not a V or straight design? Are two pieces the norm for a number of engines? Thanks.
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Old January 22nd, 2002, 04:05 PM   #2
Tool Pants
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Did you ask the same question on another board?

Per our Chris G., Not Chris from Germany:

If you look at the design you will see it needs to be split in half in order to install the crank shaft, if it is to be a true flat six,, i.e., boxer design like subaru and porsche. If the crank was below the center then it would be a V design.

By bolting the 2 case halves together, it works like a big vise clamp and maintains great integrity under large amounts of stress with alloys that have half the strength and weight.

My scan from the tech booklet.

Jeff


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Old January 22nd, 2002, 09:54 PM   #3
LouisE
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Re: Did you ask the same question on another board?

Yes, I did, on both PPBB (no reply) and Rennlist where I did get a reply. Thanks for the info, I always wondered why and, as explained, it makes perfect sense.
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Old January 23rd, 2002, 10:58 AM   #4
Blk 2K 2.7
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Thanks... great education. *NM*

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Old January 23rd, 2002, 10:36 PM   #5
Tool Pants
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Did not see the reply

on Rennlist and 99.9% of PPBB would not know what you were talking about.

Thanks Louise, keep the questions coming. Then I get to bug Peter and Chris for the correct answers.

Jeff, the Boxstir Nut.




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