History - 917 "genes" in the 914 2.0L, The Porsche Racing Dept Engineering input |
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914/4: 70 71 72 73 74 75 76 914/6: 70 71 72
History - 917 "genes" in the 914 2.0L, The Porsche Racing Dept Engineering input |
Tom_T |
Dec 6 2009, 03:35 PM
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#1
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TMI.... Group: Members Posts: 8,318 Joined: 19-March 09 From: Orange, CA Member No.: 10,181 Region Association: Southern California |
UPDATED 12/21/09 & (IMG:style_emoticons/default/santa_smiley.gif) to all!
While the 917 is not strictly 914, it is historical info from the period & definitely original info. from the factory & race drivers of the day. And the pay-off for the link after this "shameless hook", is the info in the thread of how an Engineer from the Porsche Racing Department was able to make the lowly VW 1.7L 4 banger into a respectable "Porsche-bred" 90-100 hp 2L engine - when VW thought it was impossible to go any bigger & had been max'ed out at 1.8L (+/- 200% - recall it started in the 1930's VW as only about 900 cc). See the videos at the link below, & also peruse the additional clips at the sidebar after viewing this one linked below, including those linking to racing 914/6's..... <snipped> If you like racing and the sounds of Porsches, you will love this video: YouTube - Porsche 917 <end snip> Enjoy! Courtesy of our local PCA-OCR membership chair! (IMG:style_emoticons/default/biggrin.gif) Then read the lively discussion on the link between the 917 & 914-2.0 engines, of which even the "Master of 914 O&H" was not aware! (IMG:style_emoticons/default/biggrin.gif) ...Heck! - even I'm learning stuff I didn't know from others of you out there, which I always do! (IMG:style_emoticons/default/biggrin.gif) |
carr914 |
Dec 15 2009, 10:37 AM
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#2
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Racer from Birth Group: Members Posts: 118,899 Joined: 2-February 04 From: Tampa,FL Member No.: 1,623 Region Association: South East States |
I don't recall where I saw the piece on how the 2L was derived in part from the 917's engine. Dang!!!! (IMG:style_emoticons/default/sad.gif) - it was a great connection & I thought I could tie the two stories together. If anyone else has seen that write-up where they talked about engineering the 914-2.0 engine redesign of the prior 914/411 1.7L, in connection with the technology of the 917's 10 cyl. air-cooled racing engine, feel free to add in here! I think it had to do with the cams, timing, etc. on the 917...???? The Connection is Hans Mezger, The Engine Designer. Here is the Qoute from Hans Mezger that I was searching for |
JFJ914 |
Jan 4 2010, 08:38 PM
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#3
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Senior Member Group: Benefactors Posts: 813 Joined: 13-June 03 From: Alpharetta, GA Member No.: 814 Region Association: South East States |
I don't recall where I saw the piece on how the 2L was derived in part from the 917's engine. Dang!!!! (IMG:style_emoticons/default/sad.gif) - it was a great connection & I thought I could tie the two stories together. If anyone else has seen that write-up where they talked about engineering the 914-2.0 engine redesign of the prior 914/411 1.7L, in connection with the technology of the 917's 10 cyl. air-cooled racing engine, feel free to add in here! I think it had to do with the cams, timing, etc. on the 917...???? The Connection is Hans Mezger, The Engine Designer. Here is the Qoute from Hans Mezger that I was searching for I think Mezger meant rod bearings not main bearings as that was the mod that allowed the stroke increase to 71mm. |
johannes |
Feb 12 2010, 01:11 PM
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#4
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Club Porsche 914 France President Group: Members Posts: 3,084 Joined: 13-January 06 From: France Member No.: 5,409 Region Association: France |
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