Do not put on the 997 Intake!
Marco From Magnus is a great guy, There Shop is 10 mins from me. I am going to dyno it back to back and see what the diffrence would be.
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slicing the 996intake runners and adding plenum on it? or all new?
From my understanding the GT2 and the 997 are exactly the same
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997tt is plastic 997gt2 is aluminum but there is big difference in the runner size. 997gt2 has small runners which on low end and lower then 800hp is really great at the 800 or higher range it chokes you up as the y pipe(behind TB) is actually smaller then the 997tt one.
this info comes from Betim and actually viewing the photos of the units that brad bedell has posted.
this info comes from Betim and actually viewing the photos of the units that brad bedell has posted.
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way back in the day! Something similar with velocity stacks would be awesome for our cars!Palette, my local shop made a brace (steel brackets) to hold the intakes together. Did you pressure test the plenums?
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Gents,
Correct me if I a wrong.. short runner = high rpm power??? longer runner = more bottom, and mid range power?? This is the simple break down, I do know the runner shape also has an effect.
If there is one TB, that is 75mm and it feeds the whole motor then only half of that metered air (by the TB) will be going into each bank. So if we agree with that then the size of the plenum only needs to flow half of the air the TB can feed. Is the GT2 plenum too small? The transition needs to be well designed so flow is smooth.. But now that brings us to the next problem, The banks "talking" though the plenum. All tuners have there own feelings on this.. On the N/A cars GT-3 included they run a cross over in addition to the piece we call the plenum , It is obvious it works and is needed on a N/A motor. Ok 965T has a cross over, 993TT has a cross over, 996TT same intake, cross over blocked (some reconnect it and reported picking up mid range torque), 997TT nicely shaped runner and large plenum opening, and now 997 GT2 I have not seen one in my hands yet. Old school thinking was that the "plenum" (the tank between the runners and the TB) needed to be at least 1 1/2 times the displacement of the motor. IE 3.6L motor needs 3.6L "tanks" so that's two 1.8L "Tanks" at the top of the runners. The runner length can tune the motor just as headers do! Yes we are running boosted motors so the game changes a little but how much? The flat 6 is a unique motor that no other car runs so the need to make huge power numbers is very limited. Plus rigging up a factory ECU to run on a engine dyno is crazy! I do remember more then one person trying individual TB's on these turbo motors and have never heard anything more, there was talk about how to get all the TB's to sync and the ECU to read them.
My problem with the 997TT intake is that it uses half the bolts to hold it to the head, and its plastic! I used the largest thick washers that would fit to help disperse the load over some more area then the 6mm bolt head has...
As for the cracking, After I do so testing (not that much free time lately) to see if it makes more or less power then the 997 GT2 one I will have it wrapped in carbon fiber.
Tim
Correct me if I a wrong.. short runner = high rpm power??? longer runner = more bottom, and mid range power?? This is the simple break down, I do know the runner shape also has an effect.
If there is one TB, that is 75mm and it feeds the whole motor then only half of that metered air (by the TB) will be going into each bank. So if we agree with that then the size of the plenum only needs to flow half of the air the TB can feed. Is the GT2 plenum too small? The transition needs to be well designed so flow is smooth.. But now that brings us to the next problem, The banks "talking" though the plenum. All tuners have there own feelings on this.. On the N/A cars GT-3 included they run a cross over in addition to the piece we call the plenum , It is obvious it works and is needed on a N/A motor. Ok 965T has a cross over, 993TT has a cross over, 996TT same intake, cross over blocked (some reconnect it and reported picking up mid range torque), 997TT nicely shaped runner and large plenum opening, and now 997 GT2 I have not seen one in my hands yet. Old school thinking was that the "plenum" (the tank between the runners and the TB) needed to be at least 1 1/2 times the displacement of the motor. IE 3.6L motor needs 3.6L "tanks" so that's two 1.8L "Tanks" at the top of the runners. The runner length can tune the motor just as headers do! Yes we are running boosted motors so the game changes a little but how much? The flat 6 is a unique motor that no other car runs so the need to make huge power numbers is very limited. Plus rigging up a factory ECU to run on a engine dyno is crazy! I do remember more then one person trying individual TB's on these turbo motors and have never heard anything more, there was talk about how to get all the TB's to sync and the ECU to read them.
My problem with the 997TT intake is that it uses half the bolts to hold it to the head, and its plastic! I used the largest thick washers that would fit to help disperse the load over some more area then the 6mm bolt head has...
As for the cracking, After I do so testing (not that much free time lately) to see if it makes more or less power then the 997 GT2 one I will have it wrapped in carbon fiber.
Tim
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Gents,
Correct me if I a wrong.. short runner = high rpm power??? longer runner = more bottom, and mid range power?? This is the simple break down, I do know the runner shape also has an effect.
If there is one TB, that is 75mm and it feeds the whole motor then only half of that metered air (by the TB) will be going into each bank. So if we agree with that then the size of the plenum only needs to flow half of the air the TB can feed. Is the GT2 plenum too small? The transition needs to be well designed so flow is smooth.. But now that brings us to the next problem, The banks "talking" though the plenum. All tuners have there own feelings on this.. On the N/A cars GT-3 included they run a cross over in addition to the piece we call the plenum , It is obvious it works and is needed on a N/A motor. Ok 965T has a cross over, 993TT has a cross over, 996TT same intake, cross over blocked (some reconnect it and reported picking up mid range torque), 997TT nicely shaped runner and large plenum opening, and now 997 GT2 I have not seen one in my hands yet. Old school thinking was that the "plenum" (the tank between the runners and the TB) needed to be at least 1 1/2 times the displacement of the motor. IE 3.6L motor needs 3.6L "tanks" so that's two 1.8L "Tanks" at the top of the runners. The runner length can tune the motor just as headers do! Yes we are running boosted motors so the game changes a little but how much? The flat 6 is a unique motor that no other car runs so the need to make huge power numbers is very limited. Plus rigging up a factory ECU to run on a engine dyno is crazy! I do remember more then one person trying individual TB's on these turbo motors and have never heard anything more, there was talk about how to get all the TB's to sync and the ECU to read them.
My problem with the 997TT intake is that it uses half the bolts to hold it to the head, and its plastic! I used the largest thick washers that would fit to help disperse the load over some more area then the 6mm bolt head has...
As for the cracking, After I do so testing (not that much free time lately) to see if it makes more or less power then the 997 GT2 one I will have it wrapped in carbon fiber.
Tim
Correct me if I a wrong.. short runner = high rpm power??? longer runner = more bottom, and mid range power?? This is the simple break down, I do know the runner shape also has an effect.
If there is one TB, that is 75mm and it feeds the whole motor then only half of that metered air (by the TB) will be going into each bank. So if we agree with that then the size of the plenum only needs to flow half of the air the TB can feed. Is the GT2 plenum too small? The transition needs to be well designed so flow is smooth.. But now that brings us to the next problem, The banks "talking" though the plenum. All tuners have there own feelings on this.. On the N/A cars GT-3 included they run a cross over in addition to the piece we call the plenum , It is obvious it works and is needed on a N/A motor. Ok 965T has a cross over, 993TT has a cross over, 996TT same intake, cross over blocked (some reconnect it and reported picking up mid range torque), 997TT nicely shaped runner and large plenum opening, and now 997 GT2 I have not seen one in my hands yet. Old school thinking was that the "plenum" (the tank between the runners and the TB) needed to be at least 1 1/2 times the displacement of the motor. IE 3.6L motor needs 3.6L "tanks" so that's two 1.8L "Tanks" at the top of the runners. The runner length can tune the motor just as headers do! Yes we are running boosted motors so the game changes a little but how much? The flat 6 is a unique motor that no other car runs so the need to make huge power numbers is very limited. Plus rigging up a factory ECU to run on a engine dyno is crazy! I do remember more then one person trying individual TB's on these turbo motors and have never heard anything more, there was talk about how to get all the TB's to sync and the ECU to read them.
My problem with the 997TT intake is that it uses half the bolts to hold it to the head, and its plastic! I used the largest thick washers that would fit to help disperse the load over some more area then the 6mm bolt head has...
As for the cracking, After I do so testing (not that much free time lately) to see if it makes more or less power then the 997 GT2 one I will have it wrapped in carbon fiber.
Tim
uho someone had their wheaties this morning =) and another nice post Tim
Gents,
Correct me if I a wrong.. short runner = high rpm power??? longer runner = more bottom, and mid range power?? This is the simple break down, I do know the runner shape also has an effect.
If there is one TB, that is 75mm and it feeds the whole motor then only half of that metered air (by the TB) will be going into each bank. So if we agree with that then the size of the plenum only needs to flow half of the air the TB can feed. Is the GT2 plenum too small? The transition needs to be well designed so flow is smooth.. But now that brings us to the next problem, The banks "talking" though the plenum. All tuners have there own feelings on this.. On the N/A cars GT-3 included they run a cross over in addition to the piece we call the plenum , It is obvious it works and is needed on a N/A motor. Ok 965T has a cross over, 993TT has a cross over, 996TT same intake, cross over blocked (some reconnect it and reported picking up mid range torque), 997TT nicely shaped runner and large plenum opening, and now 997 GT2 I have not seen one in my hands yet. Old school thinking was that the "plenum" (the tank between the runners and the TB) needed to be at least 1 1/2 times the displacement of the motor. IE 3.6L motor needs 3.6L "tanks" so that's two 1.8L "Tanks" at the top of the runners. The runner length can tune the motor just as headers do! Yes we are running boosted motors so the game changes a little but how much? The flat 6 is a unique motor that no other car runs so the need to make huge power numbers is very limited. Plus rigging up a factory ECU to run on a engine dyno is crazy! I do remember more then one person trying individual TB's on these turbo motors and have never heard anything more, there was talk about how to get all the TB's to sync and the ECU to read them.
My problem with the 997TT intake is that it uses half the bolts to hold it to the head, and its plastic! I used the largest thick washers that would fit to help disperse the load over some more area then the 6mm bolt head has...
As for the cracking, After I do so testing (not that much free time lately) to see if it makes more or less power then the 997 GT2 one I will have it wrapped in carbon fiber.
Tim
Correct me if I a wrong.. short runner = high rpm power??? longer runner = more bottom, and mid range power?? This is the simple break down, I do know the runner shape also has an effect.
If there is one TB, that is 75mm and it feeds the whole motor then only half of that metered air (by the TB) will be going into each bank. So if we agree with that then the size of the plenum only needs to flow half of the air the TB can feed. Is the GT2 plenum too small? The transition needs to be well designed so flow is smooth.. But now that brings us to the next problem, The banks "talking" though the plenum. All tuners have there own feelings on this.. On the N/A cars GT-3 included they run a cross over in addition to the piece we call the plenum , It is obvious it works and is needed on a N/A motor. Ok 965T has a cross over, 993TT has a cross over, 996TT same intake, cross over blocked (some reconnect it and reported picking up mid range torque), 997TT nicely shaped runner and large plenum opening, and now 997 GT2 I have not seen one in my hands yet. Old school thinking was that the "plenum" (the tank between the runners and the TB) needed to be at least 1 1/2 times the displacement of the motor. IE 3.6L motor needs 3.6L "tanks" so that's two 1.8L "Tanks" at the top of the runners. The runner length can tune the motor just as headers do! Yes we are running boosted motors so the game changes a little but how much? The flat 6 is a unique motor that no other car runs so the need to make huge power numbers is very limited. Plus rigging up a factory ECU to run on a engine dyno is crazy! I do remember more then one person trying individual TB's on these turbo motors and have never heard anything more, there was talk about how to get all the TB's to sync and the ECU to read them.
My problem with the 997TT intake is that it uses half the bolts to hold it to the head, and its plastic! I used the largest thick washers that would fit to help disperse the load over some more area then the 6mm bolt head has...
As for the cracking, After I do so testing (not that much free time lately) to see if it makes more or less power then the 997 GT2 one I will have it wrapped in carbon fiber.
Tim
Yea i should have wrapped it in Carbon like i said earlier it would have held i think. But who know when your your making 725+ hp to the Wheels that may be to much for it. Or it may have been a rare case.
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Hey Tim I did some data Logs and we found it smoothend out the power curve so it does work.
Yea i should have wrapped it in Carbon like i said earlier it would have held i think. But who know when your your making 725+ hp to the Wheels that may be to much for it. Or it may have been a rare case.
Yea i should have wrapped it in Carbon like i said earlier it would have held i think. But who know when your your making 725+ hp to the Wheels that may be to much for it. Or it may have been a rare case.
. I made 840 to the rear wheels with GT3076r's with C16 and 30psi of boost... I am waiting on my new turbos (same ones) to get here so I can get at it again!!Tim
Tim BTW nice tires on the Car. I love mine! They hook great on the street
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2 Bar of boost?! Are you also on stock internals like the rest of us Tim?
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... Wait up, I think my spark is getting knocked out or there is a boost leak.... let me try it again... no that's not it... hold up what was that.........
BOOM..
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YES!!! They blow away the BFG's drags...... Very scary deep in the triples though!!!
Tim
