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) |
Bleyseng |
Feb 21 2010, 09:32 AM
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#2
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Aircooled Baby! Group: Members Posts: 13,035 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
IIRC correctly the spigot castings is weaker in the 2.0L vs the early cases, the main bearing saddles are stronger in the early cases...
So the early cases tend to not be pounded out as much.. There were pics of the differences on Shoptalk years ago on this....even the 2.0l bus cases have these differences. 2.0l bus cases with high mileage tend to be trash from the beating vs the 1.7 ones. I think the thinking is that VW had to make a new case design for the 2.0l so why not make it cheaper and easier to cast vs the old 1.7 design..."cost benefits". VW is always looking to make stuff cheaper esp in the 70's as the Mark vs Dollar was killing VW sales. |
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