Twin turbo kit for cayman coming soon
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From: Jordanian @ Saudi Arabia
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With all respect to the OP, it won't be appropriate for me to hijack the thread. And since I didn't reach the minimum posts to address you privately, kindly visit the website and you'll have all the details.
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Joined: Jul 2010
Posts: 30
From: Jordanian @ Saudi Arabia
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^ Due to the fact that my car needs further tuning and tweaking, I didn't get it dynoed yet. But this dyno chart of another car should answer your question:
http://tpcracing.net/cms/store/image...w/78_149_p.jpg
To OP, if this post offends you -I apologize- and I won't mind if you delete it. I was caught in this as I am not here to promote anybody. And I wish you all the best with your new kit.
http://tpcracing.net/cms/store/image...w/78_149_p.jpg
To OP, if this post offends you -I apologize- and I won't mind if you delete it. I was caught in this as I am not here to promote anybody. And I wish you all the best with your new kit.
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Wow! 
From my limited understanding, I am reading this as two tests of one condition and one of another condition.
I assume the two conditions are (a) stock NA and (b) turbo charged.
Furthermore, since I know it is a Gen 1 987 3.4L making 295 hp at the fly wheel, I also assume these peak hp and torque figures as "at the wheels," the rear wheels on the dyno's rollers.
267 hp at the wheels shows that the 295 hp rating given by Porsche is quite conservative and the engine may have been originally making more than 310 hp at the fly wheel.
The giant boost (210 more hp
) leads me to believe that the turbo is providing a huge .8 bar boost.
Torque is also increased by 142 ft/lbs, an increase of 60%.
Therefore, I expect this car to have an outrageously increased top end; however, I have no way to guage what its Top Speed might be!
Can you provide the new Top Speed? Please.
It looks like the turbo begins to kick in at approximately 3100 rpm and provides a real kick in the seat of the pants well before 4000 rpm. However, I am having difficulty reading it. Nonetheless, it looks like power comes on beautifully, linearly (flat) to 7300 rpm.
In comparison, since this thread is about the announcing of a new Twin Turbo system:
Ivan's magic appears to put less stress on his engines--by providing a modest .4 bar increase.
By report his Twin Turbos spool up earlier at 2500 rpm and are full on by 3200 rpm.
Therefore, I predict:
The Twin Turbo car will not achieve the upper limits in speed of the single turbo that appears to rely upon double the boost.
The Twin Turbo system may lack the "kick in the seat of the pants" of the TPC system.
Nonetheless, if Ivan can produce his system it will:
A. Be easier on the power plant resulting in greater engine reliability.
B. Be a seamless boost (if he does his homework well, quite well).
C. Provide more low end (low rev) torque which will result in quicker take off and faster sprint times.
All of this makes the Twin Turbo solution more applicable to how we drive on our streets in the US, but I also expect it will cost more, from 50% to 100% more. The trade off is in engine reliability versus increased complexity and the associated maintenance costs, i.e. replacing TWO turbos instead of ONE when the time comes.
Now, might that be at 60,000 miles? Or might it be longer? I can not say. However, I would rather replace my turbos than have to rebuild my engine.
Does either system have a timing shut off system to give the turbo(s) a chance to cool down and keep the turbo(s) oiled in a fashion that resists "coking" or has the technology advanced beyond the need for that since the original 930?
The real testing will have to occur over time.
My understanding of these things is limited. I'm not an egineer. I hope my analysis and predictions have been entertaining.
Thanks, Hassaan, for providing the dyno chart test results. There are others who know far more than I. I am the one guilty of prodding & prompting of this info.
I must reveal I have a bias for Twin Turbos. Moreover, I expect the Twin Turbo car to be an easier car to drive & manage.
From my limited understanding, I am reading this as two tests of one condition and one of another condition.
I assume the two conditions are (a) stock NA and (b) turbo charged.
Furthermore, since I know it is a Gen 1 987 3.4L making 295 hp at the fly wheel, I also assume these peak hp and torque figures as "at the wheels," the rear wheels on the dyno's rollers.
267 hp at the wheels shows that the 295 hp rating given by Porsche is quite conservative and the engine may have been originally making more than 310 hp at the fly wheel.
The giant boost (210 more hp
) leads me to believe that the turbo is providing a huge .8 bar boost.Torque is also increased by 142 ft/lbs, an increase of 60%.
Therefore, I expect this car to have an outrageously increased top end; however, I have no way to guage what its Top Speed might be!
Can you provide the new Top Speed? Please.
It looks like the turbo begins to kick in at approximately 3100 rpm and provides a real kick in the seat of the pants well before 4000 rpm. However, I am having difficulty reading it. Nonetheless, it looks like power comes on beautifully, linearly (flat) to 7300 rpm.
In comparison, since this thread is about the announcing of a new Twin Turbo system:
Ivan's magic appears to put less stress on his engines--by providing a modest .4 bar increase.
By report his Twin Turbos spool up earlier at 2500 rpm and are full on by 3200 rpm.
Therefore, I predict:
The Twin Turbo car will not achieve the upper limits in speed of the single turbo that appears to rely upon double the boost.
The Twin Turbo system may lack the "kick in the seat of the pants" of the TPC system.
Nonetheless, if Ivan can produce his system it will:
A. Be easier on the power plant resulting in greater engine reliability.
B. Be a seamless boost (if he does his homework well, quite well).
C. Provide more low end (low rev) torque which will result in quicker take off and faster sprint times.
All of this makes the Twin Turbo solution more applicable to how we drive on our streets in the US, but I also expect it will cost more, from 50% to 100% more. The trade off is in engine reliability versus increased complexity and the associated maintenance costs, i.e. replacing TWO turbos instead of ONE when the time comes.
Now, might that be at 60,000 miles? Or might it be longer? I can not say. However, I would rather replace my turbos than have to rebuild my engine.
Does either system have a timing shut off system to give the turbo(s) a chance to cool down and keep the turbo(s) oiled in a fashion that resists "coking" or has the technology advanced beyond the need for that since the original 930?
The real testing will have to occur over time.
My understanding of these things is limited. I'm not an egineer. I hope my analysis and predictions have been entertaining.
Thanks, Hassaan, for providing the dyno chart test results. There are others who know far more than I. I am the one guilty of prodding & prompting of this info.
I must reveal I have a bias for Twin Turbos. Moreover, I expect the Twin Turbo car to be an easier car to drive & manage.
Last edited by gr8ful; Jan 25, 2011 at 12:23 AM.
Registered User
Joined: Jul 2010
Posts: 30
From: Jordanian @ Saudi Arabia
Rep Power: 17
Clearly you are not!
(no offense)
Registered User
Joined: Jul 2010
Posts: 30
From: Jordanian @ Saudi Arabia
Rep Power: 17
Man! You are naughty! 
I hope it is not expensive as J.Lo's
Oops, I do get carried away... sorry, wrong forum!
For someone who never changed the wiper of his car and doesn't change a flat tire, the discussion here got too complicated for my understanding. As I said on another forum, when it comes to figures there is only one figure that matters to me... 0-60 that is. But don't be mistaken thinking that I only judge a car by that!
I hope it is not expensive as J.Lo's Oops, I do get carried away... sorry, wrong forum!
For someone who never changed the wiper of his car and doesn't change a flat tire, the discussion here got too complicated for my understanding. As I said on another forum, when it comes to figures there is only one figure that matters to me... 0-60 that is. But don't be mistaken thinking that I only judge a car by that!
Registered User
Joined: Jul 2010
Posts: 30
From: Jordanian @ Saudi Arabia
Rep Power: 17
Where is the moderator here?!