Why did Porsche de-tune the 951??
02-15-2006, 12:53 PM
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Originally Posted by JDeitz951
No, you misunderstand. The part about the 911 guys saying "I WANT ONE OF THOSE", that's a pipe dream.
02-15-2006, 01:05 PM
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Originally Posted by streckfu's951
I know a few guys that own both a 911 and a 951. The 951 is the track car for each....
(I can see Lart firing up Photoshop as he reads this)
Last edited by JDeitz951; 02-15-2006 at 02:09 PM.
02-15-2006, 01:50 PM
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Deitz, I was going to do it, but iam going to the dyno in a few minutes. Today is my b-day and I am installing some new gizmos in my car. Brb later for fun and to post dyno graph as well.
02-15-2006, 04:49 PM
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He guys 965 c2 turbo 558 hp just 2 valves one turbo - 60 -200 km/h a little bit quicker than CBR900 RR Fireblade.
Time 0 - 200 8.5 seconds...
Why was no one else in F1 using 5 valves per cylinder than Yamaha?
Let us see oh no one did not Ferrari, not Honda, not Mercedes (sorry Illmor Swiss), ...
Time 0 - 200 8.5 seconds...
Why was no one else in F1 using 5 valves per cylinder than Yamaha?
Let us see oh no one did not Ferrari, not Honda, not Mercedes (sorry Illmor Swiss), ...
02-15-2006, 05:02 PM
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Originally Posted by streckfu's951
I know a few guys that own both a 911 and a 951. The 951 is the track car for each....
02-15-2006, 06:35 PM
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Originally Posted by mroberts
Yeah, but how many people track 951s because they give similar performance but at a MUCH lower cost than a 911. A 951 is basically a disposable track car. You can't even get into a 911 for less than about $15k, and one that will be comparable in power / performance to a 951 will cost you closer to $20k.
02-15-2006, 08:45 PM
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Originally Posted by turbinek
He guys 965 c2 turbo 558 hp just 2 valves one turbo - 60 -200 km/h a little bit quicker than CBR900 RR Fireblade.
Time 0 - 200 8.5 seconds...
Why was no one else in F1 using 5 valves per cylinder than Yamaha?
Let us see oh no one did not Ferrari, not Honda, not Mercedes (sorry Illmor Swiss), ...
Time 0 - 200 8.5 seconds...
Why was no one else in F1 using 5 valves per cylinder than Yamaha?
Let us see oh no one did not Ferrari, not Honda, not Mercedes (sorry Illmor Swiss), ...
Give me an example of a team using a 2-valve head. All the one's you listed used 4-valve heads. 5-valve trials have had some good effects in some reacing application and some street applications, but the staggered sizes, staggered flow and shear packaging difficulties don't drive all engineers to try them. Yamaha isn't quite a prime example of F1 technology's forefront.
Bottom-line to your example... none of those teams use a 2-valve head.
Originally Posted by todd
he is correct in regards to port and polish. Also, not need for the intake side of the head to have work either, only the exhaust side.
02-15-2006, 10:27 PM
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Originally Posted by lart951
Deitz, I was going to do it, but iam going to the dyno in a few minutes. Today is my b-day and I am installing some new gizmos in my car. Brb later for fun and to post dyno graph as well.
02-16-2006, 01:11 PM
#72
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Originally Posted by FSAEracer03
Giving an example of a 2-valve, turbo car vs. a crotch rocket is like claiming you have a larger ***** because you wear italian leather shoes... that doesn't really mean anything in theory.
Give me an example of a team using a 2-valve head. All the one's you listed used 4-valve heads. 5-valve trials have had some good effects in some reacing application and some street applications, but the staggered sizes, staggered flow and shear packaging difficulties don't drive all engineers to try them. Yamaha isn't quite a prime example of F1 technology's forefront.
Bottom-line to your example... none of those teams use a 2-valve head.
No, actually he isn't. I don't mean to be too abrupt, but the porting and polishing isn't of the combustion chamber, it's of the ports leading to it. You want laminar flow from the infinity, to the combustion chamber. Once it gets into the chamber, you want squish, tumble, and sheer turbulence for as pure a distribution as you can manage, and for flame-front expansion and propogation.
Give me an example of a team using a 2-valve head. All the one's you listed used 4-valve heads. 5-valve trials have had some good effects in some reacing application and some street applications, but the staggered sizes, staggered flow and shear packaging difficulties don't drive all engineers to try them. Yamaha isn't quite a prime example of F1 technology's forefront.
Bottom-line to your example... none of those teams use a 2-valve head.
No, actually he isn't. I don't mean to be too abrupt, but the porting and polishing isn't of the combustion chamber, it's of the ports leading to it. You want laminar flow from the infinity, to the combustion chamber. Once it gets into the chamber, you want squish, tumble, and sheer turbulence for as pure a distribution as you can manage, and for flame-front expansion and propogation.
With your answer you're a bit off topic?
You copied that with Yamaha - they announced we blow away everybody in F1 but they're gone without any good result.
02-16-2006, 04:52 PM
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Originally Posted by turbinek
I just wanted to give the idea how fast this 2valve single turbo can be.
With your answer you're a bit off topic?
You copied that with Yamaha - they announced we blow away everybody in F1 but they're gone without any good result.
With your answer you're a bit off topic?
You copied that with Yamaha - they announced we blow away everybody in F1 but they're gone without any good result.
I copied what with Yamaha? They can announce all they want to, but the fact stands that Ferrari spends more than 3 times what any other team put's into their cars. That's why they rent out a couple of their motors to the tune of $10million per season including accompanying Ferrari technicians. The fact stands that BMW has put more effort into their motors than any other single aspect of their car. Yamaha doesn't hold a candle to the billions those teams have invested into their cars.
"Speed costs money... how fast do you want to go?"
02-16-2006, 04:59 PM
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I think the big dog in town in F1 will be Honda. They will be the team to look out for as far as sheer hp is concerned. Ofcourse it takes a complete package to win.
BTW, the Ferrari 355 did have 5 valves per cylinder, 3.5 with 5 valves. That is how they got their designation.
Raj
BTW, the Ferrari 355 did have 5 valves per cylinder, 3.5 with 5 valves. That is how they got their designation.
Raj
02-16-2006, 07:21 PM
#75
Originally Posted by 968TurboS
I think the big dog in town in F1 will be Honda. They will be the team to look out for as far as sheer hp is concerned. Ofcourse it takes a complete package to win.
BTW, the Ferrari 355 did have 5 valves per cylinder, 3.5 with 5 valves. That is how they got their designation.
Raj
BTW, the Ferrari 355 did have 5 valves per cylinder, 3.5 with 5 valves. That is how they got their designation.
Raj
I agree - how many friggin times does Honda
have to put its foot up the *** of the Gordon Murrays of the world to get some respect??????Witness 1988 - Japanese boot directly up BMW's tailpipe - just like most krouts, they couldn't get the job done wiithout high boost.
