A pressure measurement is just a reference point. It doesn't mean much by itself.
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Originally Posted by TeamRX8
(Post 3762721)
A pressure measurement is just a reference point. It doesn't mean much by itself.
This being apples and oranges means a whole lot less - but does raise some very interesting questions about what is going on . For instance : does this setup have more overlap thap previous PP rotaries ? |
Originally Posted by TeamRX8
(Post 3762721)
A pressure measurement is just a reference point. It doesn't mean much by itself.
We know the turbo, we have some basic info about the engine, we know the power output and we know the manifold pressure. We can deduce a bit about total throughput, though we don't have the actual flow numbers or the resultant lambda. |
We don't know enough to deduce the overall efficiency short of guessing, which was my only intended point ...
please don't make me school you WRT the relativity of dyno comparisons :nono: |
Originally Posted by TeamRX8
(Post 3762832)
We don't know enough to deduce the overall efficiency short of guessing, which was my only intended point ...
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save the bs for the fanboi society meeting :)
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Originally Posted by TeamRX8
(Post 3763196)
save the bs for the fanboi society meeting :)
They gave us the turbo (Turbonetics T4), the relative manifold pressure (14 PSI) and the specific power output (290 HP). You can even nail down which of the turbo trims are possible from that information and the approximate airflow. |
Originally Posted by MazdaManiac
(Post 3763514)
lol
and the approximate airflow. |
I love the rotor :worship:
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Back on the dyno last night with some changes in the setup. We switched from a Racing Beat race/sport exhaust to a racing beat straight through muffler (FYI we have to run a cat per the Redline Time Attack rules) and installed an aluminum intake with a larger throttle body.
New peak numbers are at 361 HP with 257 ft.lbs, at 14 pounds of boost and 14 degrees of timing. We might have gone for more but are now at the limit of our fuel pump and injectors, so we will have to upgrade those before going for bigger numbers. The car will be on track this weekend at the Redline Time Attack finale at Auto Club Speedway in Fontana. |
Nice. Hope you get some good times
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Now we're talkin'!
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that's a huge improvement over the last dyno although torque seems a little low still - what was done ?
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Originally Posted by Brettus
(Post 3779606)
that's a huge improvement over the last dyno although torque seems a little low still - what was done ?
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Originally Posted by MazdaManiac
(Post 3779615)
The bigger turbo is gonna swap some torque for hp.
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Originally Posted by Brettus
(Post 3779619)
the overlap may be responsible for some of that as well perhaps ?
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huge douche question, but what happened to the procharger?
wondering. btw, please make something for sale. beers :beer: |
Originally Posted by swoope
(Post 3780417)
huge douche question, but what happened to the procharger?
I think the reasoning in that is pretty obvious at this point. |
very intriguing ..... I am vehemently tuned in ... pun intended
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Seems to be coming along well...
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Originally Posted by Mazdatrix
(Post 3779460)
(FYI we have to run a cat per the Redline Time Attack rules)
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^+1
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Originally Posted by Mazdatrix
(Post 3779460)
New peak numbers are at 361 HP with 257 ft.lbs, at 14 degrees of boost and 14 degrees of timing. We might have gone for more but are now at the limit of our fuel pump and injectors, so we will have to upgrade those before going for bigger numbers.
The car will be on track this weekend at the Redline Time Attack finale at Auto Club Speedway in Fontana. |
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/\ the cat king has spoken
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