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> Engine differences, 2.0 1.8 1.7
Teknon
post Dec 14 2004, 08:38 AM
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I need a crash course in the 914 engine. What are the differences. Are the cases the same and crank and rods different? Cases different? I need to rebuild mine and would like to try and do it right. Joe (IMG:style_emoticons/default/confused24.gif)
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rhcb914
post Dec 14 2004, 08:51 AM
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Hi Joe,

All of the engine cases are basically the same. The very early ones I don't believe has provisions for the windage trays but that is really the only difference. The 1.7 was 66mm stroke and 90mm bore for 1679CC of displacement. The 1.8 the bore was increased to 93mm with the same 66mm stroke. The 2.0 the bore was increased again to 94mm and 71mm stroke. The cylinder heads are probably the biggest difference between the 3 engines. The coveted 2.0L head has the largest valves and flows the best in stock form. It can be identified buy the 3 intake studs. The 1.7 has the smallest valves and intake ports.

Here are a few links that go into detail on the engines.

http://www.tunacan.net/t4/tech/case.htm

http://www.tunacan.net/t4/tour/

http://www.porschedecals.com/history914wcodes.htm

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