Isayimandrew's Twin Turbo Build

isayimandrew · 10-24-2022, 01:28 AM

Thanks! Looks like I'll be going with the CJM setup sometime in the near future. Since the car has been in the shop for a while I'm planning on enjoying it for a bit and getting used to this power level before I upgrade the fueling system and tuning to its full potential.

cv129 · 10-24-2022, 08:05 AM

Can’t wait to see this thing around town.

isayimandrew · 11-01-2022, 10:31 AM

Red line is E85 and blue line is 93 Octane. This car definitely pulls a lot stronger now haha

isayimandrew · 05-05-2023, 10:39 AM

Took my car in to EDI (where all my GTR buddies take their cars now) to do more upgrades. Ended up going with the CJM twin fuel pump assembly with the twin pump canister and 1300X injectors. Hit 700whp but had to back off at the top because injectors were maxed (not getting enough fuel). Looks like my stock fuel rails are the last bottleneck so EDI is going to re-plumb my fuel lines and fabricate his own solution to getting GTR fuel rails on the car to get better flow.

Waiting on our tuner to fly in later this month since he wanted to tune my car and a few other GTRs in person so I'll be dropping my car off a few days before he comes in to get that done. They are more than confident we will be around 800whp safely by the time they are finished.

Spooler · 05-05-2023, 10:58 AM

Quote:

Originally Posted by isayimandrew

Took my car in to EDI (where all my GTR buddies take their cars now) to do more upgrades. Ended up going with the CJM twin fuel pump assembly with the twin pump canister and 1300X injectors. Hit 700whp but had to back off at the top because injectors were maxed (not getting enough fuel). Looks like my stock fuel rails are the last bottleneck so EDI is going to re-plumb my fuel lines and fabricate his own solution to getting GTR fuel rails on the car to get better flow.

Waiting on our tuner to fly in later this month since he wanted to tune my car and a few other GTRs in person so I'll be dropping my car off a few days before he comes in to get that done. They are more than confident we will be around 800whp safely by the time they are finished.

800whp on those turbos is not wise. The drive pressure (EMAP) is done at around 21psi of boost. If you try and push it higher torching a headgasket will be in your future. Shot for around 750-775whp on E90 Ignite red. On pump E85 you will be done at around 725whp.

Spooler · 05-05-2023, 11:06 AM

I am not sure what compression ratio you went with. My reference engine is 10:1. It was pushed up to 23psi of boost to make around 823whp. The amount of whp he gained going up 2psi of boost wasn't worth it. He made 795whp at 21psi on Ignite Red and that appeared to be the safe limit. The turbos were done.

isayimandrew · 05-06-2023, 01:15 AM

Quote:

Originally Posted by Spooler

I am not sure what compression ratio you went with. My reference engine is 10:1. It was pushed up to 23psi of boost to make around 823whp. The amount of whp he gained going up 2psi of boost wasn't worth it. He made 795whp at 21psi on Ignite Red and that appeared to be the safe limit. The turbos were done.

Gotcha. My compression ratio is 9.5:1. Thanks for the heads up though! I'll give EDI a heads up and we'll see what we can safely push for once we get everything sorted out and re-tuned. If that means staying around the 700whp but being able to fully utilize the full powerband I'd be happy with that. Wasn't really shooting for 800whp to begin with but just went with it since that's what they were anticipating it would be once we fixed the bottleneck.

NecioVato · 05-06-2023, 09:16 AM

@OP
How hard is it to keep the power to the ground with those HP numbers? And looking forward to seeing the results - great looking Z man

isayimandrew · 05-06-2023, 09:49 AM

Quote:

Originally Posted by NecioVato

@OP
How hard is it to keep the power to the ground with those HP numbers? And looking forward to seeing the results - great looking Z man

right now, very hard lol I'm still using Michelin PS4S and I can easily break traction in 1st-3rd and sometimes in 4th. It's hilarious how easy I can get this car loose. Looking to get stickier tires once I wear the current set out but I'm only expecting to try to hook in 3rd or maybe 2nd with new tires. I'm not planning on upgrading my axles and/or driveshaft for hard 1st gear launches.

Spooler · 05-06-2023, 07:26 PM

Quote:

Originally Posted by NecioVato

@OP
How hard is it to keep the power to the ground with those HP numbers? And looking forward to seeing the results - great looking Z man

At 700whp, it is not hard at all. Wider wheels and tires, Diff upgrade, and boost by gear to keep the boost low in first and second. PS4's won't cut it. R888r's work like a champ.

NecioVato · 05-09-2023, 09:54 PM

So - for me I ‘think’ I have come to the conclusion that my current Z is going to be a ‘keeper’ so that being said - FI is always on the mind. Would love for the Z to be a little bit faster etc. While I think the NEW Z is nice as well - with current prices and honestly - really wanting a different platform for a 2nd car - I just want to make my current Z a ‘project car’ which has me asking all these questions when it comes to FI.
Right now - FI is a little more down the road - I’m trying to make all the other pieces etc be a priority vs going FI since I am looking at keeping this car as a ‘keeper/project car’ for the future. IDK - though - but @OP - your build is really really nice and clean. I can’t wait to see what your end result is etc.

Spooler · 05-09-2023, 10:01 PM

Quote:

Originally Posted by NecioVato

So - for me I ‘think’ I have come to the conclusion that my current Z is going to be a ‘keeper’ so that being said - FI is always on the mind. Would love for the Z to be a little bit faster etc. While I think the NEW Z is nice as well - with current prices and honestly - really wanting a different platform for a 2nd car - I just want to make my current Z a ‘project car’ which has me asking all these questions when it comes to FI.
Right now - FI is a little more down the road - I’m trying to make all the other pieces etc be a priority vs going FI since I am looking at keeping this car as a ‘keeper/project car’ for the future. IDK - though - but @OP - your build is really really nice and clean. I can’t wait to see what your end result is etc.

Biggest thing that can help you is doing your research. FI on a stock block is iffy at beast. It can get expensive quick. I have hurt two built motors. It's not fun.

NecioVato · 05-09-2023, 11:21 PM

Quote:

Originally Posted by Spooler

Biggest thing that can help you is doing your research. FI on a stock block is iffy at beast. It can get expensive quick. I have hurt two built motors. It's not fun.

100% - you are a wealth of knowledge and when you say something CAN/CAN’T be done - I do take note of it. Part of the reason why I think - keep it full bolt-on and look for suspension upgrades - it does make more sense than going FI - hence why I look at FI as the last part of the build as a whole. Bc I know its probably cheaper to go another platform than to try to make a NA motor driven platform into a FI platform vs going with something like a manual Supra or even the new Z so you are starting somewhere cheaper etc.

Spooler · 05-10-2023, 12:47 PM

Quote:

Originally Posted by NecioVato

100% - you are a wealth of knowledge and when you say something CAN/CAN’T be done - I do take note of it. Part of the reason why I think - keep it full bolt-on and look for suspension upgrades - it does make more sense than going FI - hence why I look at FI as the last part of the build as a whole. Bc I know its probably cheaper to go another platform than to try to make a NA motor driven platform into a FI platform vs going with something like a manual Supra or even the new Z so you are starting somewhere cheaper etc.

If you want it to be a track car a suspension and diff upgrade can do wonders. Then time in the seat. FI cars are hard to keep cool on the track. It can be done but it get's expensive quick.

isayimandrew · 05-10-2023, 05:46 PM

Quote:

Originally Posted by NecioVato

So - for me I ‘think’ I have come to the conclusion that my current Z is going to be a ‘keeper’ so that being said - FI is always on the mind. Would love for the Z to be a little bit faster etc. While I think the NEW Z is nice as well - with current prices and honestly - really wanting a different platform for a 2nd car - I just want to make my current Z a ‘project car’ which has me asking all these questions when it comes to FI.
Right now - FI is a little more down the road - I’m trying to make all the other pieces etc be a priority vs going FI since I am looking at keeping this car as a ‘keeper/project car’ for the future. IDK - though - but @OP - your build is really really nice and clean. I can’t wait to see what your end result is etc.

Thanks! this is my "keeper" car too so thats why I decided to dump a bunch of money into it lol

10-24-2022, 01:28 AM	#1 (permalink)
isayimandrew Enthusiast Member Join Date: Sep 2012 Location: Texas Posts: 321 Drives: 13 370Z Nismo MR M6 Rep Power: 13	Thanks! Looks like I'll be going with the CJM setup sometime in the near future. Since the car has been in the shop for a while I'm planning on enjoying it for a bit and getting used to this power level before I upgrade the fueling system and tuning to its full potential. cv129, Rusty, madwi and 2 others like this.

10-24-2022, 08:05 AM	#2 (permalink)
cv129 A True Z Fanatic Join Date: Jul 2011 Location: Dallas, TX Posts: 3,265 Drives: 09 Nismo, 16 Nismo Rep Power: 163995	Can’t wait to see this thing around town. Rusty, isayimandrew and redondoaveb like this. __________________ Setrab \| RE-71 \| SPL \| JRZ \| Nismo \| ARK \| Whiteline \| RacingBrake \| CJM Oil Pan \| Ti shield

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05-05-2023, 11:06 AM	#6 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 14,061 Drives: 2013 Nismo 370z Rep Power: 2684393	I am not sure what compression ratio you went with. My reference engine is 10:1. It was pushed up to 23psi of boost to make around 823whp. The amount of whp he gained going up 2psi of boost wasn't worth it. He made 795whp at 21psi on Ignite Red and that appeared to be the safe limit. The turbos were done.

05-06-2023, 09:16 AM	#8 (permalink)
NecioVato Enthusiast Member Join Date: Jul 2009 Location: Dallas TX Posts: 328 Drives: 2017 Black Nismo Z Rep Power: 19787	@OP How hard is it to keep the power to the ground with those HP numbers? And looking forward to seeing the results - great looking Z man

05-09-2023, 09:54 PM	#11 (permalink)
NecioVato Enthusiast Member Join Date: Jul 2009 Location: Dallas TX Posts: 328 Drives: 2017 Black Nismo Z Rep Power: 19787	So - for me I ‘think’ I have come to the conclusion that my current Z is going to be a ‘keeper’ so that being said - FI is always on the mind. Would love for the Z to be a little bit faster etc. While I think the NEW Z is nice as well - with current prices and honestly - really wanting a different platform for a 2nd car - I just want to make my current Z a ‘project car’ which has me asking all these questions when it comes to FI. Right now - FI is a little more down the road - I’m trying to make all the other pieces etc be a priority vs going FI since I am looking at keeping this car as a ‘keeper/project car’ for the future. IDK - though - but @OP - your build is really really nice and clean. I can’t wait to see what your end result is etc.