Isayimandrew's Twin Turbo Build

isayimandrew · 07-14-2022, 08:53 AM

Quote:

Originally Posted by Elmo370z

Do you have to retorque the heads bolts? I know with those 625 and copper after a proper warm up procedure it’s highly recommended to go back and re torque the head bolts.

I'll be going to Jotech hopefully this week or early next week to watch the break in and initial dyno tuning so I'll ask them about re-torqueing the head bolts.

Elmo370z · 07-14-2022, 09:31 AM

Quote:

Originally Posted by isayimandrew

I'll be going to Jotech hopefully this week or early next week to watch the break in and initial dyno tuning so I'll ask them about re-torqueing the head bolts.

99% shops don’t do it because they don’t have a engine stand, and the vvel is a major pain in the *** to take back apart

isayimandrew · 07-19-2022, 10:03 AM

Quote:

Originally Posted by Elmo370z

99% shops don’t do it because they don’t have a engine stand, and the vvel is a major pain in the *** to take back apart

Spoke to Jotech and they won't be re-torqueing the head studs. They were pretty confident that it wasn't needed and that their previous Z and GTR builds haven't had any issues or needed re-torqueing.

isayimandrew · 08-04-2022, 01:29 AM

Got a few more updates. Looks like they're wrapping everything up. Had some start up communication issues that they think are sensor related so once those are replaced and the tuner is back from vacation we should be back on track to have the professional break in and initial dyno tuning soon.

More progress pics:

ZontheRocks · 08-04-2022, 07:43 AM

Looking sweet!

isayimandrew · 10-20-2022, 05:25 PM

Dyno numbers are in!

On pump gas it made 559whp & 529wtq

On Ethanol with 60% ethanol content it made 650whp & 582wtq at 20 PSI.

For the ethanol run, we were at the limit of the injectors, about 90% IDC on the run. Probably going to keep this set up for a little bit before upgrading to a twin fuel pump setup and either 1300X or 1700X injectors. I did buy a Seibon TS style vented hood from Jotech but not planning on getting it paint matched and install until spring time so thats when I'll most likely do the fuel pump and injectors too.

redondoaveb · 10-20-2022, 11:19 PM

Quote:

Originally Posted by isayimandrew

Dyno numbers are in!

On pump gas it made 559whp & 529wtq

On Ethanol with 60% ethanol content it made 650whp & 582wtq at 20 PSI.

For the ethanol run, we were at the limit of the injectors, about 90% IDC on the run. Probably going to keep this set up for a little bit before upgrading to a twin fuel pump setup and either 1300X or 1700X injectors. I did buy a Seibon TS style vented hood from Jotech but not planning on getting it paint matched and install until spring time so thats when I'll most likely do the fuel pump and injectors too.

Twin pumps are a good idea but I'd probably go with 1300's instead of 1700's unless you're going for huge power. My car made 745whp on e85 with 1300's and they weren't maxed out. The 1700's are just going to give you a shitty idle

Great numbers by the way! Fast Intentions ftw

isayimandrew · 10-21-2022, 01:01 AM

Quote:

Originally Posted by redondoaveb

Twin pumps are a good idea but I'd probably go with 1300's instead of 1700's unless you're going for huge power. My car made 745whp on e85 with 1300's and they weren't maxed out. The 1700's are just going to give you a shitty idle

Great numbers by the way! Fast Intentions ftw

So the CJM Twin pump and the 1300X should be a good set up?

madwi · 10-21-2022, 01:49 AM

Quote:

Originally Posted by isayimandrew

So the CJM Twin pump and the 1300X should be a good set up?

Cant go wrong with that combo.

redondoaveb · 10-21-2022, 10:23 AM

Quote:

Originally Posted by isayimandrew

So the CJM Twin pump and the 1300X should be a good set up?

Yep, I run twin Hellcats but that's a little overkill

Elmo370z · 10-21-2022, 12:14 PM

Quote:

Originally Posted by isayimandrew

So the CJM Twin pump and the 1300X should be a good set up?

I made 700 with 1300’s on e94 Duty cycle was at 70 something %

isayimandrew · 10-21-2022, 01:11 PM

Jotech was also thinking of using a radium surge tank setup to just add on to my existing setup so I wouldn't have to replace as many parts. We would reuse my walbro 450, and relace the current in-tank pump with either a stock unit or a smaller upgraded pump since its just used as a lift pump to keep the surge tank full. And as a bonus would address the fuel starvation problems our cars have issues with.

redondoaveb · 10-21-2022, 04:38 PM

Quote:

Originally Posted by isayimandrew

Jotech was also thinking of using a radium surge tank setup to just add on to my existing setup so I wouldn't have to replace as many parts. We would reuse my walbro 450, and relace the current in-tank pump with either a stock unit or a smaller upgraded pump since its just used as a lift pump to keep the surge tank full. And as a bonus would address the fuel starvation problems our cars have issues with.

If you're planning on staying at the power level you're at right now, that would sure save you some money. I run CJM twin pump set up with his new surge canister to address fuel starve

isayimandrew · 10-22-2022, 12:26 AM

Quote:

Originally Posted by redondoaveb

If you're planning on staying at the power level you're at right now, that would sure save you some money. I run CJM twin pump set up with his new surge canister to address fuel starve

What power level would the radium setup with 1300X injectors support? Trying to do some research and get as much info from some experienced people so that I can communicate better with Jotech.

I am not really trying to push for a specific number but I definitely want to maximize my build without pushing it past reliability and drivability. I also want to stay a good amount below 800whp since that seems to be the magic number of when things become unreliable.

redondoaveb · 10-22-2022, 09:23 AM

Quote:

Originally Posted by isayimandrew

What power level would the radium setup with 1300X injectors support? Trying to do some research and get as much info from some experienced people so that I can communicate better with Jotech.

I am not really trying to push for a specific number but I definitely want to maximize my build without pushing it past reliability and drivability. I also want to stay a good amount below 800whp since that seems to be the magic number of when things become unreliable.

I unfortunately don't know anything about the Radium set up. The secondary pump is just used to just keep the surge tank full? So you'd just be using your single 450 for your fuel supply?

08-04-2022, 01:29 AM	#49 (permalink)
isayimandrew Enthusiast Member Join Date: Sep 2012 Location: Texas Posts: 321 Drives: 13 370Z Nismo MR M6 Rep Power: 13	Got a few more updates. Looks like they're wrapping everything up. Had some start up communication issues that they think are sensor related so once those are replaced and the tuner is back from vacation we should be back on track to have the professional break in and initial dyno tuning soon. More progress pics: NecioVato, JARblue, Elmo370z and 3 others like this.

08-04-2022, 07:43 AM	#50 (permalink)
ZontheRocks Track Member Join Date: Mar 2017 Location: Central Florida Posts: 960 Drives: 2016 Nissan PW 370Z Rep Power: 34536	Looking sweet! isayimandrew likes this. __________________ '16 Pearl White Sport \| Stillen Gen. 3 \| Motordyne ART \| Motordyne Shockwave \| ZSpeed \| Powertrix \| EVO-R \| Aeroworkz \| Nismo \| Z1 \| EcuTek \| Tuned by Seb @ SpecialtyZ

10-20-2022, 05:25 PM	#51 (permalink)
isayimandrew Enthusiast Member Join Date: Sep 2012 Location: Texas Posts: 321 Drives: 13 370Z Nismo MR M6 Rep Power: 13	Dyno numbers are in! On pump gas it made 559whp & 529wtq On Ethanol with 60% ethanol content it made 650whp & 582wtq at 20 PSI. For the ethanol run, we were at the limit of the injectors, about 90% IDC on the run. Probably going to keep this set up for a little bit before upgrading to a twin fuel pump setup and either 1300X or 1700X injectors. I did buy a Seibon TS style vented hood from Jotech but not planning on getting it paint matched and install until spring time so thats when I'll most likely do the fuel pump and injectors too. Rusty, xxAGAVExx, ZontheRocks and 1 others like this.

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10-21-2022, 01:11 PM	#57 (permalink)
isayimandrew Enthusiast Member Join Date: Sep 2012 Location: Texas Posts: 321 Drives: 13 370Z Nismo MR M6 Rep Power: 13	Jotech was also thinking of using a radium surge tank setup to just add on to my existing setup so I wouldn't have to replace as many parts. We would reuse my walbro 450, and relace the current in-tank pump with either a stock unit or a smaller upgraded pump since its just used as a lift pump to keep the surge tank full. And as a bonus would address the fuel starvation problems our cars have issues with.