- Joined
- Feb 18, 2018
- Messages
- 688
3rd gear 3krpm wot, then shift at 8krpm into 4th and let it run to 8k+ rpm or until the dragy gps confirms you've hit 200kph.
Copyninja Street FD - GT3 Build
- Thread starter Copyninja
- Start date
Latest posts
-
-
I broke it quickly...And repeatedly...Chaste White Rebuild- Latest: RandomVillager
-
-
Francob
Well-known member
- Joined
- Jul 25, 2019
- Messages
- 1,061
When I get my RPM increased Im curious to see how mine does at similar boost, think I’m running a little bit more around 15/16.
Roughly speaking your 60-100 is just over 4secs which is impressive at low ish boost. Mine did a 3.7 60-100 on previous set up but around 18psi at the time so I’d guess my 100-200kph would be similar at 15/16.
In theory you should have an advantage with your modern turbo spooling a little sooner than my big old Holset but then perhaps mine will come into it’s own a little later in the rev range, peak power on mine was around 7500-7600 and tend to rev out to 8400rpm.
Looking forward to getting some comparisons soon.
Roughly speaking your 60-100 is just over 4secs which is impressive at low ish boost. Mine did a 3.7 60-100 on previous set up but around 18psi at the time so I’d guess my 100-200kph would be similar at 15/16.
In theory you should have an advantage with your modern turbo spooling a little sooner than my big old Holset but then perhaps mine will come into it’s own a little later in the rev range, peak power on mine was around 7500-7600 and tend to rev out to 8400rpm.
Looking forward to getting some comparisons soon.
- Joined
- Feb 18, 2018
- Messages
- 688
Same here would be nice to see how you do. May as well do a 100-200 run with the limited rpms. Be nice for you to have a before and after comparison.
Being a street port my power band seems to a bit limited top end....but I will push up to 20psi and see how I get on. That being said I still have a bit of work to do to fully optimise my 14psi setup.
- Joined
- Feb 18, 2018
- Messages
- 688
Got up to 16psi. This was not the best run. Loads of wheel spin into 4th....followed by a lot hesitation whether or not to abort the run but decided to stay in the run which no doubt cost me a bit of time.
However, the negative gradient makes up for the granny shift into 4th followed by the wheel spin, followed by a split second decision to stay in the run. If it was fully flat...it would be fairly close to this time. That being said its a valid run so..ill take it
.
I've been going through some data I collected and to summarise
12 psi - 8.14s 100-200kph
14psi - 7.67 100-200kph
15 psi - 7.38 100-200kph
16psi - 7.19s 100-200kph
In summary, going up 4 psi I've gained almost 1s of performance. This is an insane real world performance gain by simply increasing the boost. So far its worth increasing the boost as the real world gains are being confirmed by the 100-200kph runs. I'll keep going until I max out the turbo or the gains stop.
The goal is to get to 20psi and see if the gains are still worthwhile etc..
However, the negative gradient makes up for the granny shift into 4th followed by the wheel spin, followed by a split second decision to stay in the run. If it was fully flat...it would be fairly close to this time. That being said its a valid run so..ill take it
.I've been going through some data I collected and to summarise
12 psi - 8.14s 100-200kph
14psi - 7.67 100-200kph
15 psi - 7.38 100-200kph
16psi - 7.19s 100-200kph
In summary, going up 4 psi I've gained almost 1s of performance. This is an insane real world performance gain by simply increasing the boost. So far its worth increasing the boost as the real world gains are being confirmed by the 100-200kph runs. I'll keep going until I max out the turbo or the gains stop.
The goal is to get to 20psi and see if the gains are still worthwhile etc..
Last edited:
rx_dreamer
Well-known member
- Joined
- Aug 14, 2018
- Messages
- 510
Interesting and brilliant work man!
- Joined
- Feb 18, 2018
- Messages
- 688
G35 1050 13B street port - 17psi runs a mega strong 6.62s range from 100-200kph. Everything on this run just came together.
Still running very much on the rich side...but I tune for reliability rather than outright power. Run felt smooth and strong. No ign breakup top end. Just right!! And the data confirms it.
18-20psi left to complete over the next few weeks. Hopefully ill be able to do this before the new 4" dp and exhaust system is installed!
Wasn't exactly holding 17psi to redline but its close enough for me.
Still running very much on the rich side...but I tune for reliability rather than outright power. Run felt smooth and strong. No ign breakup top end. Just right!! And the data confirms it.
18-20psi left to complete over the next few weeks. Hopefully ill be able to do this before the new 4" dp and exhaust system is installed!
Wasn't exactly holding 17psi to redline but its close enough for me.
- Joined
- Feb 18, 2018
- Messages
- 688
The G35 1050 on my setup is choking a bit top end on the 3" dp.
I've been on the fence about going 4" dp and full 4" exhaust system for a very very long time. Finally pulled the trigger on it.
Ill have a 3"dp and full 3.5" exhaust system for sale soon. Pm me if you are interested! This setup has run 6.6s 100-200kph runs without issues.
I've been on the fence about going 4" dp and full 4" exhaust system for a very very long time. Finally pulled the trigger on it.
Ill have a 3"dp and full 3.5" exhaust system for sale soon. Pm me if you are interested! This setup has run 6.6s 100-200kph runs without issues.
- Joined
- Feb 18, 2018
- Messages
- 688
17psi cleaned up..touch better. Firmly in the 6s range now!
Quite an insane achievement when I think about it. Changed the turbo and the results came to meet me. The old TO4Z was never this good at 17psi. Just goes to show that the G35 1050 is flowing crazy amounts of air for a mid frame turbo.
Think its fair to say I have achieved my initial goal of 450rwhp/very very close to it now!
What kind of power do you think is needed to run a 100-200 in the 6.5s range?
Quite an insane achievement when I think about it. Changed the turbo and the results came to meet me. The old TO4Z was never this good at 17psi. Just goes to show that the G35 1050 is flowing crazy amounts of air for a mid frame turbo.
Think its fair to say I have achieved my initial goal of 450rwhp/very very close to it now!
What kind of power do you think is needed to run a 100-200 in the 6.5s range?
Last edited:
mattdavies
Member
- Joined
- Apr 14, 2021
- Messages
- 15
Is this last run with the new Downpipe and Exhaust ?
What gains are you expecting form the new exhaust setup ?
What gains are you expecting form the new exhaust setup ?
- Joined
- Feb 18, 2018
- Messages
- 688
Nope still the same setup. Just a better run with slight tweaks to the map.
New one will be done by end of the month so ive got a very limited time to test with current setup...although i am noticing a lot of choke top end with the current 3"dp.
I have no idea how the new 4" system will perform. I will post up some results once i start testing with the new system. I'm hoping it reduces / eliminates the choke point im seeing on my setup up top. Dragy gps will confirm if there are any performance gains at the same boost levels.
Francob
Well-known member
- Joined
- Jul 25, 2019
- Messages
- 1,061
Add a back pressure sensor, that’s what I’ve done.
- Joined
- Feb 18, 2018
- Messages
- 688
Totally agree, i need a new exhaust mani with EGT's and EMap sensors. Maybe it will go well with a new intake mani
Francob
Well-known member
- Joined
- Jul 25, 2019
- Messages
- 1,061
Will post Wednesday, promiseTotally agree, i need a new exhaust mani with EGT's and EMap sensors. Maybe it will go well with a new intake mani
- Joined
- Feb 18, 2018
- Messages
- 688
To add some real world context to what a 6.58s valid 100-200kph means for a 30 year old RX7?
Lets have a look at the valid and verified dragy gps 100-200kph data collected by Auto Top Nl. These guys have tested some absolute weapons on their channel.
Take a closer look at the weapons(and HP levels) on this list with all the bells and whistles. Not a single manual in sight and all with lightning fast boxes for a seamless gear change.
Now lets objectively take a closer look at the time lost by the rx7 because of it manual box and me granny shifting not double clutching like I should. Yes i'm getting all the excuses out haha!! (In my mind a faster shift = broken gearbox)
Im calculating from 100% TP in 3rd back to 100% TP in 4th and the time taken to make that entire manual shift happen.
3.50.521 is the section time in 3rd gear at 100% throttle (moments later as the TP falls to 0%.)
3.51.056 is the section time in 4th gear back at 100% throttle.
Total Time lost to the manual shift - 0.535s
Take note, in 3rd Gear at 8102rpm 100% TP i'm at 17psi (full boost level i was testing at). However in 4th gear 100% TP I'm at only 6.1psi. Almost 11psi outside the 17psi full boost window I'm testing at.
So how much time does it take to get back to full boost of 17psi? Lets take a closer look at the data.
For me the section time is 3.52.829 to get back to exactly 17psi. Im at 100% TP in 4th 3.51.056 = 1.773s to get back into full boost window of 17psi.
In summary, 0.54s lost during the shift and a further 1.8s to get back into the full boost window.
Isn't it great considering the time lost that the FD can still lay down a mega respectable 6.58s 100-200kph on pump fuel at only 17psi. I imagine with a DCT box which can shift up seamlessly within 0.1s and keep the turbo at max boost. The FD (without increasing a single hp) would easily run a low 6s range all day long.
This data is very promising for all street ported FD RX7s. It confirms and reinforces the fact that you dont need massive turbos or massive bp/semi pp engines with 600+Hp to run decent times. A simple street port with supporting mods is more than capable.
However, if are running semi pp or bp engines with big turbos....you know at 17psi you should be able to run a 6.5s range 100-200kph or faster. If you run it slower, you know without any doubt your setup is no where near its optimal potential and more 100-200kph testing is required.
Lets have a look at the valid and verified dragy gps 100-200kph data collected by Auto Top Nl. These guys have tested some absolute weapons on their channel.
Take a closer look at the weapons(and HP levels) on this list with all the bells and whistles. Not a single manual in sight and all with lightning fast boxes for a seamless gear change.
Now lets objectively take a closer look at the time lost by the rx7 because of it manual box and me granny shifting not double clutching like I should. Yes i'm getting all the excuses out haha!!
(In my mind a faster shift = broken gearbox)Im calculating from 100% TP in 3rd back to 100% TP in 4th and the time taken to make that entire manual shift happen.
3.50.521 is the section time in 3rd gear at 100% throttle (moments later as the TP falls to 0%.)
3.51.056 is the section time in 4th gear back at 100% throttle.
Total Time lost to the manual shift - 0.535s
Take note, in 3rd Gear at 8102rpm 100% TP i'm at 17psi (full boost level i was testing at). However in 4th gear 100% TP I'm at only 6.1psi. Almost 11psi outside the 17psi full boost window I'm testing at.
So how much time does it take to get back to full boost of 17psi? Lets take a closer look at the data.
For me the section time is 3.52.829 to get back to exactly 17psi. Im at 100% TP in 4th 3.51.056 = 1.773s to get back into full boost window of 17psi.
In summary, 0.54s lost during the shift and a further 1.8s to get back into the full boost window.
Isn't it great considering the time lost that the FD can still lay down a mega respectable 6.58s 100-200kph on pump fuel at only 17psi. I imagine with a DCT box which can shift up seamlessly within 0.1s and keep the turbo at max boost. The FD (without increasing a single hp) would easily run a low 6s range all day long.
This data is very promising for all street ported FD RX7s. It confirms and reinforces the fact that you dont need massive turbos or massive bp/semi pp engines with 600+Hp to run decent times. A simple street port with supporting mods is more than capable.
However, if are running semi pp or bp engines with big turbos....you know at 17psi you should be able to run a 6.5s range 100-200kph or faster. If you run it slower, you know without any doubt your setup is no where near its optimal potential and more 100-200kph testing is required.
Last edited:
Satoshi-FD3
Well-known member
- Joined
- Jan 14, 2018
- Messages
- 510
Time is a construct and irrelevant 
Still it is rapid for a fraction of the cost.
Still it is rapid for a fraction of the cost.
- Joined
- Feb 18, 2018
- Messages
- 688
Fraction of the cost only if you get it right the first timeTime is a construct and irrelevant
...otherwise 13b rebuilds are not cheap plus the additional costs if you wipe out the turbo etc etc....
The K20 swap looks like the cheap the bang for buck for the fd platform. Gavbey has proven how well this works.
- Joined
- Feb 18, 2018
- Messages
- 688
4" Dp and exhaust system. Gotta chase down those 5s range 100-200kph or die trying.
Didn't get a chance to test 18psi+ due to poor weather.
I'll re-run 100-200kph to see how the new exhaust does against the older one.
All things considered i guess everyone including me wants to see if 17psi on the 4" zaust can top the previous 17psi pb of 6.58s, which is already fairly respectable for a street port with a small ish turbo ha!
Didn't get a chance to test 18psi+ due to poor weather.
I'll re-run 100-200kph to see how the new exhaust does against the older one.
All things considered i guess everyone including me wants to see if 17psi on the 4" zaust can top the previous 17psi pb of 6.58s, which is already fairly respectable for a street port with a small ish turbo ha!
