SharkWerks Picks up Kermit MKII 09 PDK 997S
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Sharkster, just to make sure I am reading this correctly....
1- your base line run max hp was 309 and with your center muffler by pass it was 321hp?
2-So with a 20% loss due to the AWD dyno crank HP max is 385.2HP (that is stock from Porsche) and base line was only 370hp, less than 15hp from stock?
I am really confused so please explain since Porsche claims 385hp at the crank. I do not think by removing the center muffler you would lose HP so that is why I am confused with your dyno readings.
I am thinking of what AWE and Fabspeed have posted on there dyno results. I have seen at the wheels on their dyno's 350-364 with mods are the base lines were right around 339hp so +14% loss would be 385 at the crank. I know not all dyno's read the same.
1- your base line run max hp was 309 and with your center muffler by pass it was 321hp?
2-So with a 20% loss due to the AWD dyno crank HP max is 385.2HP (that is stock from Porsche) and base line was only 370hp, less than 15hp from stock?
I am really confused so please explain since Porsche claims 385hp at the crank. I do not think by removing the center muffler you would lose HP so that is why I am confused with your dyno readings.
I am thinking of what AWE and Fabspeed have posted on there dyno results. I have seen at the wheels on their dyno's 350-364 with mods are the base lines were right around 339hp so +14% loss would be 385 at the crank. I know not all dyno's read the same.
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sharkster, thanks for the reply and understanding I am not doubt or putting your deal down but just me trying to learn something. I totally understand about the 3 different dyno's used by the 3 different vendors plus the operator, weather, data input for weather and so forth. I understand the 20% value for the all wheel dyno a PDK car has to use and the 14% value that the 2wheels drive 6 speed cars get to use.
I forgot you have to use 91 octance and that would make a few HP difference, around 5hp at most I have been told. So am I think this correctly...take your 309 baseline, add 20% and get 371 add 5hp for the 91 vs 93 octane and get 376hp at the crank?
thanks for the help! Mike
I forgot you have to use 91 octance and that would make a few HP difference, around 5hp at most I have been told. So am I think this correctly...take your 309 baseline, add 20% and get 371 add 5hp for the 91 vs 93 octane and get 376hp at the crank?
thanks for the help! Mike
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Hi Mike,
I know Alex is not at a computer so I will try to help.
It's a bit early for me and my dyno math is a little rusty from years of inactivity:
But I think if the car loses power going from the flywheel to the wheels, you'd use something like:
385 * 80% = 308 HP
(wheel HP = 80% of flywheel horsepower)
or
385 - (385*20%) = 308 HP
Adding 20% back on top of that is not the same as subtracting 20% from the gross HP, because you're losing that 20% of the difference to the engineers at Porsche and that big'ol AWD dyno.
If this is correct then to go from wheel HP to flywheel HP I think you'd take wheel HP / (1-drivetrain loss)... or 307 / 80% = 384 HP.
^^^ Again - I could be very wrong here, but this is the way I understood it.
I know Alex is not at a computer so I will try to help.
It's a bit early for me and my dyno math is a little rusty from years of inactivity:
take your 309 baseline, add 20% and get 371
385 * 80% = 308 HP
(wheel HP = 80% of flywheel horsepower)
or
385 - (385*20%) = 308 HP
Adding 20% back on top of that is not the same as subtracting 20% from the gross HP, because you're losing that 20% of the difference to the engineers at Porsche and that big'ol AWD dyno.
![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
^^^ Again - I could be very wrong here, but this is the way I understood it.
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
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Hi Mike,
I know Alex is not at a computer so I will try to help.
It's a bit early for me and my dyno math is a little rusty from years of inactivity:
But I think if the car loses power going from the flywheel to the wheels, you'd use something like:
385 * 80% = 308 HP
(wheel HP = 80% of flywheel horsepower)
or
385 - (385*20%) = 308 HP
Adding 20% back on top of that is not the same as subtracting 20% from the gross HP, because you're losing that 20% of the difference to the engineers at Porsche and that big'ol AWD dyno.
If this is correct then to go from wheel HP to flywheel HP I think you'd take wheel HP / (1-drivetrain loss)... or 307 / 80% = 384 HP.
^^^ Again - I could be very wrong here, but this is the way I understood it.![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
I know Alex is not at a computer so I will try to help.
It's a bit early for me and my dyno math is a little rusty from years of inactivity:
But I think if the car loses power going from the flywheel to the wheels, you'd use something like:
385 * 80% = 308 HP
(wheel HP = 80% of flywheel horsepower)
or
385 - (385*20%) = 308 HP
Adding 20% back on top of that is not the same as subtracting 20% from the gross HP, because you're losing that 20% of the difference to the engineers at Porsche and that big'ol AWD dyno.
![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
^^^ Again - I could be very wrong here, but this is the way I understood it.
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
Or you could use the reciprocal calculation as a multiplier, which is 100/80 = 1.25, then 1.25 X 80 HP = 100 HP
So 308 / 80% = 385 HP, or
308 X 1.25 = 385 HP.
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Sharkster,
You made comment about the Tech Arc springs working well on the 997.2 model, and that you could actually recommend them with the new model. Have you tried those springs on the older 997 Non-Pasm cars (05 997 C2 is what I have)? I was think about changing the springs on the 05 C2 and possibly the shocks (going with the Blistein Sport shocks). Any comments??
You made comment about the Tech Arc springs working well on the 997.2 model, and that you could actually recommend them with the new model. Have you tried those springs on the older 997 Non-Pasm cars (05 997 C2 is what I have)? I was think about changing the springs on the 05 C2 and possibly the shocks (going with the Blistein Sport shocks). Any comments??
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Hi Mike,
I know Alex is not at a computer so I will try to help.
It's a bit early for me and my dyno math is a little rusty from years of inactivity:
But I think if the car loses power going from the flywheel to the wheels, you'd use something like:
385 * 80% = 308 HP
(wheel HP = 80% of flywheel horsepower)
or
385 - (385*20%) = 308 HP
Adding 20% back on top of that is not the same as subtracting 20% from the gross HP, because you're losing that 20% of the difference to the engineers at Porsche and that big'ol AWD dyno.
If this is correct then to go from wheel HP to flywheel HP I think you'd take wheel HP / (1-drivetrain loss)... or 307 / 80% = 384 HP.
^^^ Again - I could be very wrong here, but this is the way I understood it.![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
I know Alex is not at a computer so I will try to help.
It's a bit early for me and my dyno math is a little rusty from years of inactivity:
But I think if the car loses power going from the flywheel to the wheels, you'd use something like:
385 * 80% = 308 HP
(wheel HP = 80% of flywheel horsepower)
or
385 - (385*20%) = 308 HP
Adding 20% back on top of that is not the same as subtracting 20% from the gross HP, because you're losing that 20% of the difference to the engineers at Porsche and that big'ol AWD dyno.
![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
^^^ Again - I could be very wrong here, but this is the way I understood it.
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
Thanks Dan, totally understand it now...thanks for the explaination...just trying to figure it all out as compared to other dyno readings for other mods. I know it's hard to compare but I find all this very interesting of sorts.
Thanks again!
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Sharkster,
You made comment about the Tech Arc springs working well on the 997.2 model, and that you could actually recommend them with the new model. Have you tried those springs on the older 997 Non-Pasm cars (05 997 C2 is what I have)? I was think about changing the springs on the 05 C2 and possibly the shocks (going with the Blistein Sport shocks). Any comments??
You made comment about the Tech Arc springs working well on the 997.2 model, and that you could actually recommend them with the new model. Have you tried those springs on the older 997 Non-Pasm cars (05 997 C2 is what I have)? I was think about changing the springs on the 05 C2 and possibly the shocks (going with the Blistein Sport shocks). Any comments??
![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
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Hey fellas, here's a suspension-a-polooza update for project ZTadpol. We've gotten quite a few new toys in this week so I thought I'd give you a little sample of some of the suspension changes in store. In many ways thanks to the 6speed community and friends we've made we've actually been working behind the scenes with the team at RSS. Their manufacturing expertise/ capabilities and their ability to work in-house is so paramount. In fact, they've long been cranking out some of our parts and have been making parts for just about everyone for donkeys years. Their full line has been available for 996/997 cars for a while and our 09 997 is no different and hence we've been hammering away at suspension components for the more ardent track folks.
This includes an adjustable toe steer kit (also replaces the inner bushing with a steel monoball) as shown here:
![](http://videos.g33kd.net/sharkwerks_rss_suspension_parts/rss_sharkwerks_suspension_kit_parts_44.JPG)
And compared to the stocker
![](http://videos.g33kd.net/sharkwerks_rss_suspension_parts/rss-adjustable-toe-steer-kit2.JPG)
Adjustable rear links:
![](http://videos.g33kd.net/sharkwerks_rss_suspension_parts/rss-adjustable-rear-link.JPG)
And compared to stock:
![](http://videos.g33kd.net/sharkwerks_rss_suspension_parts/rss-adjustable-rear-link2.JPG)
Also on tap are the adjustable thrust arm bushings (which do away with the neoprene):
![](http://videos.g33kd.net/sharkwerks_rss_suspension_parts/rss-adjustable-thrust-arm-bushing-kit.JPG)
And finally the monoball lower control arm kit.
![](http://videos.g33kd.net/sharkwerks_rss_suspension_parts/monoball-aarm-kit.JPG)
Our rear end being worked on by James:
![](http://videos.g33kd.net/sharkwerks_rss_suspension_parts/rss_sharkwerks_suspension_kit_parts_67.JPG)
![](http://videos.g33kd.net/sharkwerks_rss_suspension_parts/rss_sharkwerks_suspension_kit_parts_68.JPG)
![](http://videos.g33kd.net/sharkwerks_rss_suspension_parts/rss_sharkwerks_suspension_kit_parts_64.JPG)
Dan will be releasing all of the info etc... over the next few days but for now that's a taste or you can head over to the suspension section on the site and dig around
This includes an adjustable toe steer kit (also replaces the inner bushing with a steel monoball) as shown here:
And compared to the stocker
Adjustable rear links:
And compared to stock:
Also on tap are the adjustable thrust arm bushings (which do away with the neoprene):
And finally the monoball lower control arm kit.
Our rear end being worked on by James:
Dan will be releasing all of the info etc... over the next few days but for now that's a taste or you can head over to the suspension section on the site and dig around
![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
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The light's a little better today and with the rotors off (more on that in a second...) you can get a better idea of the level of adjustability and just how we're rid of most of the "cushy" stuff![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
![](http://videos.g33kd.net/sharkwerks_rss_suspension_parts/more/rss_sharkwerks_suspension_kit_parts_07.JPG)
![](http://videos.g33kd.net/sharkwerks_rss_suspension_parts/more/rss_sharkwerks_suspension_kit_parts_04.JPG)
![](http://videos.g33kd.net/sharkwerks_rss_suspension_parts/more/rss_sharkwerks_suspension_kit_parts_06.JPG)
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Now on to the two piece rotor upgrades. The 997S 09 comes with 330mm front and 330mm rears so not only are we going with a lighter weight two piece slotted/drilled rotor but these can actually bolt on with caliper spacers to fit 350mm ones (also still lighter).
All four stock vs new:
![](http://videos.g33kd.net/rss_two_piece_rotor_kit/rss_rotor_kit_02.JPG)
Front RSS one comes in at 22.16 pounds:
![](http://videos.g33kd.net/rss_two_piece_rotor_kit/rss_rotor_kit_05.JPG)
Smaller stock one is still heavier at 23.24 pounds
![](http://videos.g33kd.net/rss_two_piece_rotor_kit/rss_rotor_kit_08.JPG)
New larger rears at 17.7 pounds:
![](http://videos.g33kd.net/rss_two_piece_rotor_kit/rss_rotor_kit_10.JPG)
Old smaller stockers at 19.86 pounds:
All four stock vs new:
Front RSS one comes in at 22.16 pounds:
Smaller stock one is still heavier at 23.24 pounds
New larger rears at 17.7 pounds:
Old smaller stockers at 19.86 pounds: