History - 917 "genes" in the 914 2.0L, The Porsche Racing Dept Engineering input Options

[Tom_T]

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
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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]

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

[Tom_T]

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

(IMG:style_emoticons/default/agree.gif)
Yeah, that's the one! Thanx T.C.!!!! (IMG:style_emoticons/default/smile.gif)

I think there may have been more details on other things that he "borrowed" from stuff learned on the 917 et al engines in the one I recalled reading, along the line of stuff they did with pistons/rings, cams & timing (which I'll still try to find whenever I get my laptop back).

So you see Pat, Paul, etc. - while I used the 917 as a "hook" (IMG:style_emoticons/default/w00t.gif) - there really was a connection between the Porsche Racing Dept. & the lowly 914 Type IV 2.0 engine - as well as with the notorious line of racing 914-6's & M-471 race conversion kits available to the dealers, of which many/most here are aware. So this is a little equal time for us 2L fans out here! (IMG:style_emoticons/default/shades.gif)

This is an apparently far more obscure bit of 914 HISTORY than even I gave all y'all 914 Guru's credit for, but is certainly a "wery interesting" (use the Arte Johnson "Laugh In" voice) & integral part of the "H" part of this O&H Forum!

Pat, Paul, et al - NO BUTTONS WERE BEING PUSHED - maybe a little ear & eye candy to get attention for the link between 917s & 914-2.0s, but a well meaning historical tidbit on my part. (IMG:style_emoticons/default/biggrin.gif)

...if this type of history is not appropriate here, then I ask where?? Is the H of O&H only related to CW aspects of street 914s period?? (IMG:style_emoticons/default/confused24.gif)

So how do I correct the title after-the-fact, so the connection is clearer in the title/sub-title?? (IMG:style_emoticons/default/confused24.gif)

...and so Mike isn't worried about it running rough? (IMG:style_emoticons/default/biggrin.gif)
Although Mike, I seem to recall one race back in the day where a 917 took 2nd or 3rd running on only 10! (IMG:style_emoticons/default/laugh.gif)
...dang strong engine, that 10 er 12 er (IMG:style_emoticons/default/unsure.gif) !!?? (IMG:style_emoticons/default/driving.gif)