Flat engines?

10

Asked by Sep 19, 2008 at 12:20 PM about the 2007 Porsche 911 Carrera

Question type: General

What is the difference between a flat engine as in the 911 as opposed to a inline, like in an most econoboxes, or V formation, such as the Corvettes 6.2LV8 or the Ferrari's 6.0L V12?

7 Answers

275

In a flat, or boxer engine, the cylinders are horizontally opposed. Check out this link for a visual of each engine. http://auto.howstuffworks.com/engine2.htm

3 of 3 people found this helpful.
10

Hey, I appreciate it. That makes quite a bit more sense to me. But another quick question, is there any benefit to the use of any of these specific engine forms or is just a engineering preference?

275

There are benefits to some configurations, and I'm sure there probably are engineering preferences as well depending on who is designing the engine. Boxer engines for example are very well balanced and have a low center of gravity. Inline 6's and V12's also have a natural balance to them. Check out the links on this page. Lots of good information. http://en.wikipedia.org/wiki/Engine_configuration

5

There also a matter of space in the 911.The flat engine is more compact.

35

Aaron,This is a ridiculous question.An inline engine is INLINE...A flat engine has horizontillay opposed cylinders.You obviously have way too much time on your hands...

10

I understand the formation of an inline engine. I didn't understand the formation of a flat engine. I understand now. And, I don't understand your last sentence. How do I have too much time on my hands?

1 of 1 people found this helpful.
2,135

The 911 models employ only boxer (H4, H6) engines is not a matter of choice but due to space limitation. Our 911, having to stick with the rear engine placement, will not look anything like what they are (ie. with a slopping tail, although less and less so when it comes to the 996, 997 evolutions - note the thick rear bumpers!) if any other engine configurations are used. There is no doubt that V8, or even V10 power plants will do wonder to improve engine performance in any given sport/race car. This is why even BMW has given up the long tradition of inline 6 and put these engines in the M3 and M5 cars. Don't ask me to tell the truth, before I have my Turbo, I owned an '01 M5 and its engine kicked ass in all aspects of throttle response, smoothness, noise, and tractability. Porsche realised the limitations of their boxer engines (which, only now, has come to the end of their usefulness to remain competitive) had long ago developed their version of formidable V8. Despite the fact that Porsche can easily put their hands on the current crop of Audi V8TT and V10 engines (which have dominated Le Mans, etc.), these just would not squeeze into the 911 chassis. The very definition of our model 911 is once again under duress.

1 of 1 people found this helpful.

Your Answer

911

Looking for a Used 911 in your area?

CarGurus has 4,795 nationwide 911 listings starting at $10,894.

ZIP:

Porsche 911 Experts

  • #1
    Michael Kane
    Reputation
    1,020
  • #2
    Andrew Dickens
    Reputation
    620
  • #3
    tntjobs
    Reputation
    590
View All

Related Models For Sale

Used Porsche Cayman
14 Great Deals out of 620 listings starting at $15,712
Used Porsche Boxster
44 Great Deals out of 1,135 listings starting at $3,995
Used Chevrolet Corvette
252 Great Deals out of 22,296 listings starting at $2,500
Used Audi R8
8 Great Deals out of 584 listings starting at $57,995
Used Porsche Cayenne
109 Great Deals out of 4,760 listings starting at $3,999
Used BMW M3
43 Great Deals out of 1,432 listings starting at $4,990
Used Mercedes-Benz SL-Class
46 Great Deals out of 2,722 listings starting at $4,500
Used Ford Mustang
759 Great Deals out of 42,755 listings starting at $1,300
Used BMW 3 Series
1,044 Great Deals out of 31,562 listings starting at $1,000
Used Mercedes-Benz E-Class
469 Great Deals out of 19,741 listings starting at $1,500
Used Mercedes-Benz C-Class
592 Great Deals out of 23,334 listings starting at $1,995

Used Cars For Sale

2018 Porsche 911 Carrera For Sale
38 listings starting at $104,100
2017 Porsche 911 Carrera For Sale
3 Great Deals out of 180 listings starting at $84,900
2016 Porsche 911 Carrera For Sale
17 listings starting at $75,900
2015 Porsche 911 Carrera For Sale
38 listings starting at $59,798
2014 Porsche 911 Carrera For Sale
23 listings starting at $59,000

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.