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Boost happy intake manifolds

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Old 01-12-2018, 03:21 AM   #121
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For those of you who don't follow me on facebook (James Carolyn Goertz)

Just felt like building something pretty cool

ltx intake for gen 6 camaro will clear oem hood (hood line is 8.5" this guy is 8.25")
Runners are the right length we are tuned on TWO INDUCTION WAVES. 4th wave at about 4600rpm and 3rd wave hitting right at 6200rpm. Note that will be peak ve of the engine rpms where max trq is seen. Generally speaking 1500rpm after that is where hp drop off will start to occur as the engine runs further out of ve

Need to cut some inj bungs at different angle to fit them as right now they tuck under the plenums which would make it impossible to install due to angles.







Interesting and definitely cool looking.

Curious how much plenum volume that netted.

Could you mount short body injectors between the plenums, or would that make the fuel rail(s) mount too high? (I'm thinking 8 injectors in a row mounted vertically so you have enough room to weld the bungs to the runners now that it's already together).
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Old 01-12-2018, 10:45 AM   #122
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Interesting and definitely cool looking.

Curious how much plenum volume that netted.

Could you mount short body injectors between the plenums, or would that make the fuel rail(s) mount too high? (I'm thinking 8 injectors in a row mounted vertically so you have enough room to weld the bungs to the runners now that it's already together).

In the future I'm looking to have a custom 8 injector single rail made and just run them down like that.
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Old 01-12-2018, 01:40 PM   #123
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Is it not a bad idea not to have the fuel spraying towards the backside of the valve or at least down the runner? For the above intake would it not be better to mount them low (under the runners) and closser to the intake port?

Also think you need to post some of your other CAD work up on here! Some great ideas coming out.
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Old 01-12-2018, 01:45 PM   #124
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Last edited by G1Pro; 01-12-2018 at 01:51 PM.
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Old 01-13-2018, 01:56 AM   #125
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Is it not a bad idea not to have the fuel spraying towards the backside of the valve or at least down the runner? For the above intake would it not be better to mount them low (under the runners) and closser to the intake port?
If it were a port injection engine, and you wanted to only run one injector per port, it could cause an issue at low throttle settings and cold start (especially off idle transitions) with the injectors that far up.

However, he mentioned it was a GDI engine, so the port injectors won't come in to play until higher engine speeds and throttle settings.

Port injectors tend to do fine further up the runner, the higher the engine speed they come into play.

Years ago some F1 teams were mounting their injectors outside the injector bells and shooting the fuel down them, because they didn't care about that low rpm range ("does it start" was the big concern, but that's back when you would see the mechanic feeding the engine fuel on startup with a pump can or squeeze bottle).

As for the angle, if the injectors are installed vertically, they will spray down the runner, because of the angle of the runner itself.

Is that ideal?

That's what the dyno is for. (to find out, it's all theory, until you test ).


Edit:

It would look goofy, but if there were room, you could do like those old F1 teams and mount the auxiliary injectors in the off side plenum walls and blow it into the runners from there.

At that point, side feed injectors wouldn't look out of place.

Last edited by Nexxussian; 01-13-2018 at 01:59 AM. Reason: Marked in post
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Old 01-13-2018, 05:38 AM   #126
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Yeah seen some really interesting tests around moving injector further away from the port. It can make some good gains if you have the room. The theory is the fuel get longer to mix with the air for better fuel / air mix I think.

Yeah seen the F1 injectors mounted in the bell mouths! So cool when the fuel actually starts backing out the throttle body at certain rpm. Think the Ausy V8s also had a similar thing and there was talk about some rule changing in drag racing to allow it. Would be great to see on a road car but going to take some testing as you say!
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Old 01-14-2018, 02:38 PM   #127
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2000hp Air Water LTX "low hood"
CNC Machined billet runners with vstack bell mouth entrances

Same core as used in Boostworks TwinTurbo 256.9mph 2300hp TH400 trans Coyote Car.

Being designed up for a member here that is going for nothing short of 1500whp in his c7z.

9" tall will need minimal notching of cowl however a taller hood and or lowering of motor is in order as baseline c7 hood allows for up to 6.25" of intake manifold height with hood liner on.

Core size
9" wide, 3.5" thick, 15.5" long









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Old 01-14-2018, 10:35 PM   #128
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Pretty little CTS-V Intecooled heading out the door.

$2750 for these

We are also going to start making our own rails so no more having to mod Holley rails.
G1Pro Rails will be $200 for -10 and will already be modded for each application (shortened and plugged by the cowl for c7, mods of that nature)










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Old 01-15-2018, 12:44 PM   #129
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Very nice intake above and another great CAD design! Could something similar be done for the LS engines? It looks a lot nicer than the others!
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Old 01-15-2018, 01:04 PM   #130
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Very nice intake above and another great CAD design! Could something similar be done for the LS engines? It looks a lot nicer than the others!
yah I can drop them lower with either a curved sheet metal runner or a billet runner


My "race" intercooled intakes pricing structure works as so:

$3250 base price, this covers core up to 3.5" thick, 9" wide, 15.5" long same core in boostworks tx mile car making over 2000hp

This is sheet metal manifold with sheet metal runners straight

If I need to do a curved runner I have several ways of doing it,
laser sides and rolled top bottom square runners
angle cut on my extrude runner I use or ls7 laser shop bent sheet metal runner
or billet runner

the curved runners are an extra $250 for either option with sheet as they add in more complexity and time in fab

billet runner option is an extra $600 as it is costly having them machined. For maximum power they are hands down the way to go though.

After that there are other options also, direct port no2 bosses, direct port meth bosses, secondary fuel rail (or in ltx just adding a single rail), no2 burst panels, powder coat, polish, anodizing, etc
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Old 01-16-2018, 10:39 PM   #131
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Been working to figure out how to get that 2000hp ltx low hood manifold to clear a c7 cowling. Got it down! At max maybe a 1/4" notch on the plastic only in a very small spot in the middle as the cowl comes to its apex asside from that it should clear.

Still need a taller hood and or motor lowered but hey bolt on 2000hp air water intake manifold, billet runners, ready to go

Quoted price to member here that I will leave anonymous:
Quote Price
$3250 Custom Race Air Water Intake Manifold
+ Port Injection $200
+ G1Pro C7 Fuel Rails $200
+ Direct Port NO2 Bosses $200
+ Powder Coat $200
+ Billet Runner Option $600
$4650

Apparently it is becoming quite popular as I've had a second request for it already so if anyone else is interested I will give a 10% discount if anyone else would like to get in on some hard hitting bolt on power guaranteed to blow away the competition.









Lines drawn here are my lines I use when designing a c7 intake to clear the cowling, these give about a fingers worth of extra clearance from what would touch so everything should go in nice and easy.







It can be done as a straight runner option that will knock $600 off the price, the runner length will be very short though so do not expect to have much in the lines of mid range.

The billet runner option gives a full 5" runner which is great for power to 7500rpm on builds 427 and lower.

I can do a sheet metal curved runner to get us the 5" for $250+ instead as well if a compromise between cost and performance is something neccessary

Last edited by G1Pro; 01-16-2018 at 10:53 PM.
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Old 01-17-2018, 11:19 PM   #132
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My personal ltx rnd car doing work today

15lbs boost
24 deg timing
REAR MOUNT twin 6262 turbonetics


going to put 20lb springs in and (this was 13lb springs) turn it up and hit the track (Royal Purple Baytown) Friday Night

Blue line was prior best at 10lbs boost on 93 octane pump tune
Red is pump e85 with sensor reading 70








Last edited by G1Pro; 01-17-2018 at 11:27 PM.
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