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-   -   Carobu Engineering - 560 Dyno Testing (http://www.topklasse.net.au/forums/showthread.php?t=6987)

Oversize 28th June 2019 06:58 PM

Re: Carobu Engineering - 560 Dyno Testing
 
Agreed the trans was probably the strongest passenger vehicle auto available at the time and still the weakest link. Along with the lack of traction control, it might explain some of the strange engine limitations we’re finding now...

motec 6.9 28th June 2019 07:37 PM

Re: Carobu Engineering - 560 Dyno Testing
 
215 tyres were a speed and traction limiter unto themselves.

Oversize 13th July 2019 12:05 AM

Re: Carobu Engineering - 560 Dyno Testing
 
According to another site and with a different M117 560 engine (this one was a modified high compression unit) they managed 382hp & 423lbfts on the engine dyno! If true, they’re huge numbers and suggests the 6.9 could demolish all competition if given the same treatment!!

Oversize 13th July 2019 12:19 AM

Re: Carobu Engineering - 560 Dyno Testing
 
Oh and that update was early March 2017!! No huge progress since then...

motec 6.9 13th July 2019 08:51 AM

Re: Carobu Engineering - 560 Dyno Testing
 
At least I know what figure to smash past.

Oversize 13th July 2019 03:23 PM

Re: Carobu Engineering - 560 Dyno Testing
 
All things being setup correctly, I think 450-500hp is achievable for a modified HC 560 and 600-650hp for a 6.9 HC. And thatís NA people, no turbos or schargers necessary! Unless you really wanna go nutz!

abl567 13th July 2019 04:02 PM

Re: Carobu Engineering - 560 Dyno Testing
 
Quote:

Originally Posted by Oversize (Post 72509)
All things being setup correctly, I think 450-500hp is achievable for a modified HC 560 and 600-650hp for a 6.9 HC. And thatís NA people, no turbos or schargers necessary! Unless you really wanna go nutz!

And the drivability? Cost? Reliability?
Torque is the Target, power needs revs.

motec 6.9 13th July 2019 04:16 PM

Re: Carobu Engineering - 560 Dyno Testing
 
With volumetric efficiency power will increase to a point . I already know this from extractors and exhaust. And having tried a larger throttle body. Now I have to fit my billet throttle and frankencis and tune once I have car back. Knowing my luck transmission will cry enough.

Oversize 13th July 2019 04:17 PM

Re: Carobu Engineering - 560 Dyno Testing
 
Thatís not using radical cams either! Might even use LESS fuel depending on how theyíre driven! Reliability is built into the stock engines & wonít be affected.

This one apparently made 600hp and that was years ago & prior to the tech now available:
https://i.postimg.cc/BQv5s7Rr/BD0510...70-DA08-C9.jpg

motec 6.9 13th July 2019 04:44 PM

Re: Carobu Engineering - 560 Dyno Testing
 
Karl Middlehause KHM himself. Jay Leno bought his 600 that has efi and supercharger .

Oversize 15th July 2019 10:21 AM

Re: Carobu Engineering - 560 Dyno Testing
 
FYI 423lbft is 574Nm. The std Euro 6.9 makes 550Nm which is rather substantial as we know. Making extra torque is no small feat so itís quite an achievement if true figures.

motec 6.9 15th July 2019 03:42 PM

Re: Carobu Engineering - 560 Dyno Testing
 
My 6.9 is already about 40 foot pounds above that figure dyno corrected.

Oversize 16th July 2019 09:36 PM

Re: Carobu Engineering - 560 Dyno Testing
 
Well that sounds encouraging!

So I find it's always better to talk to the horse.... So after messaging Carobu directly they tell me their original figures were incorrectly corrected (they discovered this recently). Not sure why engine dyno figures need to be corrected, but anyways. So the correct figures are (still impressive):

350.9 hp and

395.1 lbft.

Doesn't quite beat the pre-merger AMG M117 DOHC Hammer at:

380 hp and

417 lbft.

Considering the Hammer was a 6L with 32v, the SOHC is closing the gap for FAR less coin!!!

motec 6.9 16th July 2019 09:39 PM

Re: Carobu Engineering - 560 Dyno Testing
 
Still impressive none the less

Oversize 16th July 2019 10:04 PM

Re: Carobu Engineering - 560 Dyno Testing
 
Motec what were your figures calculated at the flywheel (I know it's a different engine)?


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