for those looking to replace their aging OE turbo system
Thread Starter
Joined: Oct 2001
Posts: 6,279
Likes: 728
From: Florence, Alabama
for those looking to replace their aging OE turbo system
i just finished updating my Turbo Tech Section by including Garrett
Turbocharger Technology / Rotary
Turbocharger Technology / Rotary
Interesting read, thanks for putting that together.
I've always thought the power to weight ratio, while a better measure than power alone, is still a bit lacking in seeing the full picture. Peak HP is a fun number to compare male anatomy by, but I'd love to see something that incorporated "area under the curve" to weight. Especially in the forced induction world where turbo sizing can skew the curve fairly dramatically. At the risk of derailing this thread, I would love to hear your opinion(s) on that.
I've always thought the power to weight ratio, while a better measure than power alone, is still a bit lacking in seeing the full picture. Peak HP is a fun number to compare male anatomy by, but I'd love to see something that incorporated "area under the curve" to weight. Especially in the forced induction world where turbo sizing can skew the curve fairly dramatically. At the risk of derailing this thread, I would love to hear your opinion(s) on that.
Arrogant Wankeler
Joined: Nov 2006
Posts: 1,005
Likes: 229
From: Hunter Valley NSW Australia
Interesting read, thanks for putting that together.
I've always thought the power to weight ratio, while a better measure than power alone, is still a bit lacking in seeing the full picture. Peak HP is a fun number to compare male anatomy by, but I'd love to see something that incorporated "area under the curve" to weight. Especially in the forced induction world where turbo sizing can skew the curve fairly dramatically. At the risk of derailing this thread, I would love to hear your opinion(s) on that.
I've always thought the power to weight ratio, while a better measure than power alone, is still a bit lacking in seeing the full picture. Peak HP is a fun number to compare male anatomy by, but I'd love to see something that incorporated "area under the curve" to weight. Especially in the forced induction world where turbo sizing can skew the curve fairly dramatically. At the risk of derailing this thread, I would love to hear your opinion(s) on that.
i just finished updating my Turbo Tech Section by including Garrett
Turbocharger Technology / Rotary
Turbocharger Technology / Rotary
Thread Starter
Joined: Oct 2001
Posts: 6,279
Likes: 728
From: Florence, Alabama
" I'd love to see something that incorporated "area under the curve" to weight."
100 per cent correct.
largest area under the curve always wins the race. (assuming weight and frontal area X CD constant)
that's why i have an excel spread sheet of 80 dyno runs with 6 datapoints (5000 to 7500) and the TOTAL. all organized using the total number. largest total wins the race.
100 per cent correct.
largest area under the curve always wins the race. (assuming weight and frontal area X CD constant)
that's why i have an excel spread sheet of 80 dyno runs with 6 datapoints (5000 to 7500) and the TOTAL. all organized using the total number. largest total wins the race.
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Such a joy to read. I would love to have a section on the finer reasoning and math behind the 75% of piston rating for rotary (i think you said 30% less somewhere else on your site).
I understand the basics of less efficient and more exhaust flow, but are there any math behind it, or are you going of years of experience?
I understand the basics of less efficient and more exhaust flow, but are there any math behind it, or are you going of years of experience?
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