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Flat Plane Crank

 
Old 02-03-2019, 01:03 PM
  #16  
UKKid35
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Originally Posted by V2Rocket View Post

the biggest F-V8 is what, 4.5L, with baby 94mm pistons that you just know are micromanaged into minimum weight spec.
TVR's AJP8 is also 4.5L, but has 91mm bore so longer stroke than the Ferrari

As far as I can tell there are no vibration issues

Sure, early versions of the 4.2L variant would regularly snap their cranks, but this was fixed when the journal size was increased from 2.3" to 2.5"

Also, I seriously doubt TVR had any real development budget


Last edited by UKKid35; 02-03-2019 at 01:17 PM. Reason: Photo added
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Old 02-04-2019, 11:07 AM
  #17  
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Originally Posted by 928 GT R View Post
Spot on!

Not sure how many of you have heard one in action, but the Voodoo engine sound is amazing! Flat plane cranks are also part of the reason that Ferraris engine sound is so intoxicating!

Add full throttle to the V12 flat plane configuration and it seems that the sky is tearing open!
No such thing as a flat plane crank in a V12, or at least non I've ever heard of. with a V12 you essentially end up with 2 inline 6s which dictate that you have crank throws at 120 degrees.
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Old 02-04-2019, 01:21 PM
  #18  
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Originally Posted by UKKid35 View Post
TVR's AJP8 is also 4.5L, but has 91mm bore so longer stroke than the Ferrari

As far as I can tell there are no vibration issues

Sure, early versions of the 4.2L variant would regularly snap their cranks, but this was fixed when the journal size was increased from 2.3" to 2.5"

Also, I seriously doubt TVR had any real development budget
The engine was designed by Al Melling, he has an impressive resume:
https://en.wikipedia.org/wiki/Al_Melling



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