V8 Supercar engine rules are very restrictive. All engines have a 7500 rpm rev limit, so the additional rev potential of OHC engines is eliminated. Even so, I would expect the 4-valve per cylinder engines would make more power at the same rev limit. The sanctioning body wants to equalize performance for close competition, so they could put inlet restrictors on the 4-valve engines, or limit cam specs.
Volvo to enter V8 Supercars
- Thread starter bdcardinal
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Originally Posted By: Zako2
Originally Posted By: zloveraz
Originally Posted By: Zako2
The Volvo V8 supercar engine will be the old now discontinued Yamaha engine from XC90 modified by meet V8SC requirements:
http://www.speedcafe.com/2013/06/18/polestar-undaunted-by-v8-development-challenge/
Did you not read the first page??
I did. That's why I post a link with new information.
Got it thanks for the info!
Originally Posted By: zloveraz
Originally Posted By: Zako2
The Volvo V8 supercar engine will be the old now discontinued Yamaha engine from XC90 modified by meet V8SC requirements:
http://www.speedcafe.com/2013/06/18/polestar-undaunted-by-v8-development-challenge/
Did you not read the first page??
I did. That's why I post a link with new information.
Got it thanks for the info!
The Nissan and Mercedes are missing the area under the curve and top end. They also have 12-13% worse fuel economy then the Ford and Chev engines.
Originally Posted By: A_Harman
V8 Supercar engine rules are very restrictive. All engines have a 7500 rpm rev limit, so the additional rev potential of OHC engines is eliminated. Even so, I would expect the 4-valve per cylinder engines would make more power at the same rev limit. The sanctioning body wants to equalize performance for close competition, so they could put inlet restrictors on the 4-valve engines, or limit cam specs.
Interesting to see where the tacho ends up when they are using engine braking to the max...the pushrod valvetrain can handle a lot more than 7.500 rpm
V8 Supercar engine rules are very restrictive. All engines have a 7500 rpm rev limit, so the additional rev potential of OHC engines is eliminated. Even so, I would expect the 4-valve per cylinder engines would make more power at the same rev limit. The sanctioning body wants to equalize performance for close competition, so they could put inlet restrictors on the 4-valve engines, or limit cam specs.
Interesting to see where the tacho ends up when they are using engine braking to the max...the pushrod valvetrain can handle a lot more than 7.500 rpm
It's foolish to believe that a new car can go from zero to hero in just one season. The amount of expertise of the top V8SC teams and drivers are incredible. Nissan, Volvo, and Mercedes need to do some catching up. However, in the last few races, the Nissan cars were looking quite "racy". Still not in contention for a win, but they do start to show a solid mid-field performance.
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