My 997.1 Turbo 68mm VTG Build
Front: 19 x 8.5 ET+50
Rear: 19 x 11 ET +35
Last edited by Irishace; Sep 15, 2019 at 04:15 PM.
I have been traveling all summer for work. I have put a grand total of 900km on my car. So disappointing. Hoping to get some footage and hit the drag strip in 2 weeks. Then hope to get the video done.

https://docs.google.com/spreadsheets...it?usp=sharing
Finally had the chance to hit the dyno. This is stage 4 running on 110 octane. Tuning completed by Sam@ByDesign. Car made 727 awhp and 691 lbft of torque. Factoring in 18% parasitic loss that translates ton 856hp at the crank. Car is a monster and a real joy to drive. She trapped 137mph at the 1/4 mile a few weeks ago so its running strong. Enjoy the video.
Finally had the chance to hit the dyno. This is stage 4 running on 110 octane. Tuning completed by Sam@ByDesign. Car made 727 awhp and 691 lbft of torque. Factoring in 18% parasitic loss that translates ton 856hp at the crank. Car is a monster and a real joy to drive. She trapped 137mph at the 1/4 mile a few weeks ago so its running strong. Enjoy the video.
https://youtu.be/gJFSn0gzjtg
https://youtu.be/gJFSn0gzjtg
Have you done any 60-130’s?
I have learned over the years and find with VTG’s and 4th gear right at the 1/4 mile mark with 7000-7200rpm limit, the mph hurts ....as if you Shift to 5th it cost mph/ET, but if you have a very high rpm limit where VTG’s are out of breath does not help. The VTG’s are right at the point of not making enough power to be able to shift at 7k well before the finish line to use 5th.
I have a feeling I would be around 137-140 as well , but I know I have run cars that have trapped 137-139 and pulled 5+ cars from a street roll. I ran a 81 rx7 that ran 9.4’s @ 142 and still managed to pull 2.5-3cars by 5th from a street roll.
Saying all of that to say your 137 should be able to yank most other 137mph cars on a street roll, especially if it is a auto/dsg cars trapping 137 (other manuals running about the same trap is a little closer runs). I am on E85 so not sure how much it is different verse 110, as for the cooling properties of E85.
Nice build and enjoy!
Last edited by Bobbyfali; Nov 1, 2019 at 07:43 PM.
Very nice set up!
Have you done any 60-130’s?
I have learned over the years and find with VTG’s and 4th gear right at the 1/4 mile mark with 7000-7200rpm limit, the mph hurts ....as if you Shift to 5th it cost mph/ET, but if you have a very high rpm limit where VTG’s are out of breath does not help. The VTG’s are right at the point of not making enough power to be able to shift at 7k well before the finish line to use 5th.
I have a feeling I would be around 137-140 as well , but I know I have run cars that have trapped 137-139 and pulled 5+ cars from a street roll. I ran a 81 rx7 that ran 9.4’s @ 142 and still managed to pull 2.5-3cars by 5th from a street roll.
Saying all of that to say your 137 should be able to yank most other 137mph cars on a street roll, especially if it is a auto/dsg cars trapping 137 (other manuals running about the same trap is a little closer runs). I am on E85 so not sure how much it is different verse 110, as for the cooling properties of E85.
Nice build and enjoy!
Have you done any 60-130’s?
I have learned over the years and find with VTG’s and 4th gear right at the 1/4 mile mark with 7000-7200rpm limit, the mph hurts ....as if you Shift to 5th it cost mph/ET, but if you have a very high rpm limit where VTG’s are out of breath does not help. The VTG’s are right at the point of not making enough power to be able to shift at 7k well before the finish line to use 5th.
I have a feeling I would be around 137-140 as well , but I know I have run cars that have trapped 137-139 and pulled 5+ cars from a street roll. I ran a 81 rx7 that ran 9.4’s @ 142 and still managed to pull 2.5-3cars by 5th from a street roll.
Saying all of that to say your 137 should be able to yank most other 137mph cars on a street roll, especially if it is a auto/dsg cars trapping 137 (other manuals running about the same trap is a little closer runs). I am on E85 so not sure how much it is different verse 110, as for the cooling properties of E85.
Nice build and enjoy!
Also try just 4th from 40mph and roll on it till top of 4th (if you have a higher rpm ie 7100-7200rpm), so it rules out time of shifts. Would love to see your progression with times by adding meth.....nice.....
Will try that as well, rev limiter is increased to 7300 so I can hit 137mph in 4th.
I am biased towards Sam at By Design as he did my work. Nothing but respect for Sam, very responsive no matter where and when and the results speak for themselves. A couple of other options out there though. Good luck.
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