Log Manifold (SFR/Esmeril) Vs Tubular (turboblown) Turbo Manifolds, and setups
#51
Boostin'
Rather than sidetracking another thread I am posting this here;
I have attached the highest hp dyno thread.
This shows our manifold with the aux ports wired open, which hurt the power curve under 7200rpms by around 20+hp/tq.
Can you tell me the exact specs on the other turbos? I am pretty sure they are either 60 trim To4Es, or 61mm turbos. The To4E cars should be spooling faster than the GT35R, and therefore making more torque than our kit down low, but are they? Nope. The 61mm turbo dyno is extremely laggy compared to ours, just look at the graph, and that is a the same compressor as a GT35R.
I am not sure what more proof you want?
If you are interested in a kit & not in a rush, I will build you both style manifolds and do a back to back.
I am also not using that size tubing anymore for the turbo manifolds, I am stepping down in size, which will help increase response. Just wait til you see a 60 trim To4E from us @ 15psi, it will beat the posted graph everywhere.
Looks great
still comparing apples and oranges, I haven't seen two setups with the same turbo but one with a log manifold and one with a tubular manifold
also I have not seen the dyno charts from SFR's kit with Mazdamaniacs Tune.....
there is not enough public/Presented data to say one is better then the other
I started a thread tubular vs log, Post some DATA..... Comparing the two
https://www.rx8club.com/showthread.p...95#post3831395
still comparing apples and oranges, I haven't seen two setups with the same turbo but one with a log manifold and one with a tubular manifold
also I have not seen the dyno charts from SFR's kit with Mazdamaniacs Tune.....
there is not enough public/Presented data to say one is better then the other
I started a thread tubular vs log, Post some DATA..... Comparing the two
https://www.rx8club.com/showthread.p...95#post3831395
I have attached the highest hp dyno thread.
This shows our manifold with the aux ports wired open, which hurt the power curve under 7200rpms by around 20+hp/tq.
Can you tell me the exact specs on the other turbos? I am pretty sure they are either 60 trim To4Es, or 61mm turbos. The To4E cars should be spooling faster than the GT35R, and therefore making more torque than our kit down low, but are they? Nope. The 61mm turbo dyno is extremely laggy compared to ours, just look at the graph, and that is a the same compressor as a GT35R.
I am not sure what more proof you want?
If you are interested in a kit & not in a rush, I will build you both style manifolds and do a back to back.
I am also not using that size tubing anymore for the turbo manifolds, I am stepping down in size, which will help increase response. Just wait til you see a 60 trim To4E from us @ 15psi, it will beat the posted graph everywhere.
Last edited by Turblown; 01-15-2011 at 10:30 PM.
#52
I divide by zero
Join Date: Aug 2007
Location: Spring Hill, FL
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Just to be fair, my dyno graph was with a hack of a tune with no timing and sub 10 AFRs above 6k. I'm proud that I went over 300hp on my first dyno with a built in my garage setup, but its hardly worthy for any real comparisons to professionally built(and tuned) setups.
#53
Boostin'
I wasn't trying to take a dig at you Mawnee. It can be hard to read into " tone " over the internet. There will never be a fair comparison unless its the same car anyhow. Dynos vary, engine compression varies, tune varies etc etc...
#54
I think if mawnee's or SFR's setup was fully tuned with mazdamaniac then we would be able to say if the tubular one is significantly better then a log
MM did tune an SFR kit, but we have not seen the numbers from it or anything, once that car gets on the dyno then we would have more usable data, you have provided wonderful data, we just need more from others
as far as Torque your kit does very well, but brettus does not included torque in his graphs, for comparison.
Don't get me wrong I think you have a great Product, and its very unique!!!
what was the diameter of runners you used and plan to use next?
also where did the oxygen sensor end up? before or after the turbo?
MM did tune an SFR kit, but we have not seen the numbers from it or anything, once that car gets on the dyno then we would have more usable data, you have provided wonderful data, we just need more from others
as far as Torque your kit does very well, but brettus does not included torque in his graphs, for comparison.
Don't get me wrong I think you have a great Product, and its very unique!!!
what was the diameter of runners you used and plan to use next?
also where did the oxygen sensor end up? before or after the turbo?
#55
I divide by zero
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oh no, no offense taken. Was just pointing out that the only graph I have posted was far from the end result of my build
#57
Jeff
where is the best place to put the o2 sensor for the cobbs to tune for it?
I remember reading 18-24 inches away but I was curious if Before or after the turbo mattered on a top mount setup?
and with the MAF housing how much straight pipe is needed before and after it, also how far do you like it away from the turbo intake?
Thanks
Branden
where is the best place to put the o2 sensor for the cobbs to tune for it?
I remember reading 18-24 inches away but I was curious if Before or after the turbo mattered on a top mount setup?
and with the MAF housing how much straight pipe is needed before and after it, also how far do you like it away from the turbo intake?
Thanks
Branden
#58
Original Turbo 'd Auto !!
Jeff
where is the best place to put the o2 sensor for the cobbs to tune for it?
I remember reading 18-24 inches away but I was curious if Before or after the turbo mattered on a top mount setup?
and with the MAF housing how much straight pipe is needed before and after it, also how far do you like it away from the turbo intake?
Thanks
Branden
where is the best place to put the o2 sensor for the cobbs to tune for it?
I remember reading 18-24 inches away but I was curious if Before or after the turbo mattered on a top mount setup?
and with the MAF housing how much straight pipe is needed before and after it, also how far do you like it away from the turbo intake?
Thanks
Branden
#60
From my understanding of working with rotaries(both Renesis and the old 13B) over the years is that you need to use a minimum of 2.25" piping from the front and rear rotor to feed the turbo(for maximum power ofcourse).The center port is not as big of a concern.When we designed our header,we could not figure out a way to run twin 2.25" pipes up to the turbo so we went with a log style manifold instead.Defintiely not optimum, but seems to work well:-)
#61
#66
Administrator
iTrader: (7)
it's only ghey if your swords cross.
#69
After reading an assesment of a greddy turbo failure and causes on a the 8, i would be wery of going to much smaller. Perhaps with a bigger turbo the setup will be fine. I just cant help to think the excess heat and pressure is gonna kill the seals pretty quick.
#70
Boostin'
Car was also doing near 600rwhp.
For those that don't understand, the double slip merge collected allows each pipe to expand individually of the others, and there is zero pre-stress on the exhaust manifold( if built correctly). Turbo manifolds that don't have this, are pre-stressed, and this leads to cracking.
Last edited by Turblown; 02-02-2011 at 04:17 PM.
#72
C4 burns real good
iTrader: (4)
My car will be put on the dyno mid February to be properly tuned. From there we will have some good numbers and data to show everyone and prove the quality of the SFR kit. As Jeff stated before, MAF housing quality proves to be very important when tuning the system, and my AFR gauge might as well be painted on when under boost. If you all want specifics on my kit look in my build thread, its in my siggy. I really wish I could be there for her first time on a dyno, but I’m in Afghanistan…
Jeff, the car will be in your hands, I'm looking for some GOOD numbers, she is built to handle it. If you want a parts list of what is on the car so you can really open her up let me know and I'll send you the sheet, aw screw it, I'll post it here...
Edit - the fuel pump, and dampener are installed, the plugs and clutch will be installed by ray before the dyno.
Jeff, the car will be in your hands, I'm looking for some GOOD numbers, she is built to handle it. If you want a parts list of what is on the car so you can really open her up let me know and I'll send you the sheet, aw screw it, I'll post it here...
Edit - the fuel pump, and dampener are installed, the plugs and clutch will be installed by ray before the dyno.
Last edited by WantedTwo; 02-03-2011 at 07:38 AM.