CJM Billet Intake Manifold

Spooler · 12-29-2018, 02:04 AM

Looks like you will be up and running before me. We should have some good notes to compare when I am up and running.

jchammond · 12-29-2018, 02:08 AM

Quote:

Originally Posted by phunk

Those were id1300 and a 340/450 twin feeding off the shelf s1.se fuel system. This year it’s id1700 and same pumps to start. We will likely upgrade to twin -6 hoses between pump and filter. Perhaps swap to parallel rail plumbing and call it the new s2 kit.

You know your fuel systems & weather you’re running quality e85,90 or 98...I’m sure you dial in proper wot afr as well

Spooler · 12-29-2018, 02:11 AM

Quote:

Originally Posted by jchammond

You know your fuel systems & weather you’re running quality e85,90 or 98...I’m sure you dial in proper wot afr as well

He's got the master handling the tuning. Sebastian, I may have to do the same.

Spooler · 12-29-2018, 02:17 AM

Quote:

Originally Posted by phunk

Those were id1300 and a 340/450 twin feeding off the shelf s1.se fuel system. This year it’s id1700 and same pumps to start. We will likely upgrade to twin -6 hoses between pump and filter. Perhaps swap to parallel rail plumbing and call it the new s2 kit.

I will be using twin Walboro 450's and ID1700's. I have your fuel rails too. The fuel lines will be MA's custom build. They have a way they like to build them. I'm cool with that.

phunk · 12-29-2018, 02:18 AM

Yup this car is tuned by Seb. I tried learning ECUTEK on this car and I threw in the towel around 500whp as that software and I just didn’t get along so well. I was too busy to spend days/weeks on the dyno to master it and it made a lot more sense to just fly Seb out and get it done by someone who tunes every day. We were quickly exceeding the realm of a casual tuner anyway.. the only 370z I tuned before it was my own (670whp Uprev).

As for e85 blend, i don’t think we know what it was that day. We never really paid much attention and I don’t recall Justin bothering to find the best blend, and that isn’t his style either. I have an e% gauge in my mustang and with the blend variances we run into it never makes enough impact to worry about it. Your mileage may vary based on geographic location.

Spooler · 12-29-2018, 02:20 AM

Guess we are burning the midnight oil tonight.

jchammond · 12-29-2018, 02:36 AM

Quote:

Originally Posted by Spooler

Guess we are burning the midnight oil tonight.

Midnight “Alky” lol

Jinxx · 12-29-2018, 10:34 AM

Quote:

Originally Posted by phunk

We took the stock intake, no porting, to 818whp at ~17-18psi, which felt like we still had a fairly efficient and well matched combination. Perhaps it could have made another 30-40hp at the same boost with porting? That would be pretty wild... though I am skeptical; our turbo system still had plenty of headroom. Without knowing the test circumstances, I am guessing that if someone genuinely found 30HP in porting, they were possibly asking their turbo system for all its got. I dont believe we would have seen those results.

On the 818whp pull, the stock intake was showing no clear signs of becoming a restriction. This makes it difficult to estimate potential gains from changing to our intake. So far, it appears there would be virtually no gains at this point, even if our manifold had the potential to facilitate more airflow. When the existing resistence to airflow is so minimal, the potential reduction in that resistence is equally minimal. The boost levels were not choking us, so I dont imagine we would have found any worthwhile gains in swapping to our intake on that day.

I think we will need to increase the airflow volume a bit further first to find the point where the stock manifold has become a bottleneck. Until we find that point, there is no easy way to estimate when the potential of another manifold will come into play. I currently feel that up to the 800-900hp level, with a turbosystem ideally configured for that task, there will be little gain to find over the stock manifold.

In conclusion, we have no expectations of gains over a stock or ported manifold under the conditions we tested the stock manifold up to. We are crossing our fingers to merely do as well up to that point, and then continue to do well as we take things further than was possible with the stock engine and manifold.

Currently, It is my belief that (in turbocharged applications where the turbosystem is operating well within its efficiency) there is nothing to gain in changing the stock intake manifold out in an application that would not have burst it open. I think you would do that before you found it to be a bottleneck worth addressing, thus I question if it is even possible to demonstrate the potential gains if we will have to exceed the physical limitations of the stock manifold before we could find them.

Good info .. I was using SOHO dyno charts that he advertises for his ported upper and lower intakes

Rusty · 12-29-2018, 01:09 PM

Quote:

Originally Posted by phunk

Those were id1300 and a 340/450 twin feeding off the shelf s1.se fuel system. This year it’s id1700 and same pumps to start. We will likely upgrade to twin -6 hoses between pump and filter. Perhaps swap to parallel rail plumbing and call it the new s2 kit.

This Z is going to be drinking corn like an alcoholic.

phunk · 12-29-2018, 02:46 PM

Quote:

Originally Posted by Jinxx

Good info .. I was using SOHO dyno charts that he advertises for his ported upper and lower intakes

If it works it works! Up until then all were able to do is speculate. It will be great if we see some meaningful gains early on that could imply serious gains further up.

Elmo370z · 12-30-2018, 02:47 AM

Quote:

Originally Posted by phunk

We took the stock intake, no porting, to 818whp at ~17-18psi, which felt like we still had a fairly efficient and well matched combination. Perhaps it could have made another 30-40hp at the same boost with porting? That would be pretty wild... though I am skeptical; our turbo system still had plenty of headroom. Without knowing the test circumstances, I am guessing that if someone genuinely found 30HP in porting, they were possibly asking their turbo system for all its got. I dont believe we would have seen those results.

On the 818whp pull, the stock intake was showing no clear signs of becoming a restriction. This makes it difficult to estimate potential gains from changing to our intake. So far, it appears there would be virtually no gains at this point, even if our manifold had the potential to facilitate more airflow. When the existing resistence to airflow is so minimal, the potential reduction in that resistence is equally minimal. The boost levels were not choking us, so I dont imagine we would have found any worthwhile gains in swapping to our intake on that day.

I think we will need to increase the airflow volume a bit further first to find the point where the stock manifold has become a bottleneck. Until we find that point, there is no easy way to estimate when the potential of another manifold will come into play. I currently feel that up to the 800-900hp level, with a turbosystem ideally configured for that task, there will be little gain to find over the stock manifold.

In conclusion, we have no expectations of gains over a stock or ported manifold under the conditions we tested the stock manifold up to. We are crossing our fingers to merely do as well up to that point, and then continue to do well as we take things further than was possible with the stock engine and manifold.

Currently, It is my belief that (in turbocharged applications where the turbosystem is operating well within its efficiency) there is nothing to gain in changing the stock intake manifold out in an application that would not have burst it open. I think you would do that before you found it to be a bottleneck worth addressing, thus I question if it is even possible to demonstrate the potential gains if we will have to exceed the physical limitations of the stock manifold before we could find them.

Ahh Charles Allen Poe

FPenvy · 12-31-2018, 07:05 AM

Quote:

Originally Posted by phunk

We are interested in working with a R35 builder to construct one of these manifolds for them. If you run into anyone who would be interested, send them our way. No GT-R tax (for the first one

)

um if that's the case route it for OEM piping and take my GTR lol

it'll be sitting in my garage for the next 3 months or so.

i actually think it could work with oem/stock location turbos with how some of the big race intercoolers now route straight out on the top and drop the intakes low vs where most would almost 90 degree down to enter the top on the intercooler.

phunk · 08-01-2019, 12:39 PM

Justin just installed a new clutch and slave setup and now the car is driving. Road tuning with Seb starts this weekend. If the car makes it entirely through that without trouble, it should be on the dyno next week.

Edit: The stock hood closes over all this. It was trimmed on the underside, but it shuts. It will be on soon. Strut bar fits (with some small spacers) as well.

Rusty · 08-01-2019, 01:09 PM

JARblue · 08-01-2019, 01:09 PM

I'll take one. I don't care how much hp I lose.

12-29-2018, 02:04 AM	#106 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 14,109 Drives: 2013 Nismo 370z Rep Power: 2684394	Looks like you will be up and running before me. We should have some good notes to compare when I am up and running. phunk, TopgunZ and jchammond like this.

12-29-2018, 02:18 AM	#110 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,669 Drives: 370 Rep Power: 974724	Yup this car is tuned by Seb. I tried learning ECUTEK on this car and I threw in the towel around 500whp as that software and I just didn’t get along so well. I was too busy to spend days/weeks on the dyno to master it and it made a lot more sense to just fly Seb out and get it done by someone who tunes every day. We were quickly exceeding the realm of a casual tuner anyway.. the only 370z I tuned before it was my own (670whp Uprev). As for e85 blend, i don’t think we know what it was that day. We never really paid much attention and I don’t recall Justin bothering to find the best blend, and that isn’t his style either. I have an e% gauge in my mustang and with the blend variances we run into it never makes enough impact to worry about it. Your mileage may vary based on geographic location. JARblue, blueranger, Hotrodz and 2 others like this. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

12-29-2018, 02:20 AM	#111 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 14,109 Drives: 2013 Nismo 370z Rep Power: 2684394	Guess we are burning the midnight oil tonight. phunk and jchammond like this.

08-01-2019, 01:09 PM	#119 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 69 Posts: 35,489 Drives: 2011 Nismo GM 6M Rep Power: 2684438	__________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

08-01-2019, 01:09 PM	#120 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 44 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684441	I'll take one. I don't care how much hp I lose. cv129, Elmo370z, sirnixalot and 2 others like this. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
AAM Intake Manifold	mults	Intake/Exhaust	81	11-26-2018 07:14 AM
[FOR SALE] (BNIB) OEM Intake Manifold Gaskets///Exhaust Manifold Gaskets	BlkNismo	Parts for sale (Private Classifieds)	19	08-13-2016 12:01 PM
selling used stillen G3 intake.Motordyne M370 Intake Manifold	01206	Canada	4	04-14-2016 01:31 AM
intake plenum vs intake manifold?	louiey370z	Engine & Drivetrain	5	01-07-2016 09:49 AM
Billet intake manifold	Elmo370z	Engine & Drivetrain	46	10-04-2015 10:16 AM