Custom Intake Manifold / What do you think?

[Torpor]

Good Evening Guys

One of my friend here with great skills made me a custom Intake. Please tell me what you guys think.

Side



Intake:







Sorry about the quick post but I will add information at a later stage

[Buddyworm]

Intriguing! Why no velocity stacks though?

[bentvalves]

get it flowed and then only then will you know how good it is.

Greg

keep us updated!

[mmm240]

Sorry about the quick post but I will add information at a later stage

Please do.

[sideways danny]

Intriguing! Why no velocity stacks though?

done the right thing IMO, stacks are just something in the way of flow. I much prefer a nice leading radius into the runner (which could be improved a little on this design IMO) but I like it!!!

Wish I could weld aluminium

[float_6969]

The results from a flow bench will tell the truth of the design.

Be wary, the guy that has that company that does nothing but intakes went through 3/4 revision for the CA before he got it right. He kept have problems with low flow in the #3 runner, IIRC.

[progman]

I agree with the above posts.

You have to taper the manifold just right in order for the airflow to be even. Just like what float said about one cylinder getting more or less than then the others. A setup like what Float described is very dangerous about hard to detect if you only have oxygen senor that read the aggregate all of the chambers (like after the turbo).

If could detonate one cylinder with you knowing.

If you do get this tested I'd be interested. Especially if your friend plans on selling some

And I have also read a lot of places that bell mouthing the ports almost always helps. Maybe consider that if he does a revision.

[mbmbmb23]

I agree with the above posts.

You have to taper the manifold just right in order for the airflow to be even. Just like what float said about one cylinder getting more or less than then the others.almost always helps. Maybe consider that if he does a revision.

Or you can just try and adjust each individual velocity stack for length until the air flow is equalized between chambers. I'm not sure if the total adjustability can overcome a non tapered design tho....but it's worth trying out if you already have the shell made. You can also try using different diameter stacks to increase or decrease the air speed.

[Torpor]

Hi guys...

Sorry about the lack of information, OK the intake is still in the R&D phase. We are just working out the fitment issues as for the guy that made it he has more then enough expertise for me to trust the man.

He has mostly only worked on boosted projects, like 4AGE turbo’s, 7M, and has built his own intakes for those projects he is also currently building a 1UFE 200sx Turbo.I really can’t wait to fit the thing, I’m going to smooth out the runners and she will only be running a 60mm TB

[biosehnsucht]

Don't care how established he may be, you couldn't pay me to run that on my engine untested. Flow test it!

Search far enough back in the archives there's various discussions on custom manifolds that have been referred to here in this thread..

[c-rad]

Flowbench or bust.

[bentvalves]

hey man before you go installing that, lets get some flow bench numbers posted.

If the thing flows well enough, you might be suprised how much interest we show in that product.

Im building another CA atm.

[sideways danny]

drama queens the lot of you. numbers aren't everything, sometimes actually fitting something to try it can tell you a hell of a lot more

[biosehnsucht]

I'm not concerned that it flows alot, just that it flows evenly

certainly if it was way lean or rich in one cyl, that would be bad!

[float_6969]

Exactly. I'm sure it's got greater total flow. But what if it looses bottom end? What if the flow rates aren't even between the cylinders? Unless you had O2 sensor on each runner, you wouldn't know until you leaned that cylinder out and damaged it.

You need to put it on a flow bench and test each runner for flow against the other runners.

[Torpor]

**** Update****

Hi guys here are some updated pictures of the R&D fitment.

Intake Removed------------------------



Test Fits -----------------------



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Blurry Pic of the Port-------------------------------



Problem Area's-----------------------------

The Water line running under the intake need to be re-routed

Quick question to all the guys on the fourm there is a Pipe leading from the thermostat intake manifold (Pic 1) under the old intake to copper hard line under the intake (pic 2) .

Can this Pipe be removed and If not why? I know it could be a water cycle but my thermostat says partially open so can it be discarded

Thankz

(Pic 1)



(Pic 2)

[bentvalves]

drama queens the lot of you. numbers aren't everything, sometimes actually fitting something to try it can tell you a hell of a lot more

go figure......at what cost.

Unless he has 4 EGT probes mounted in each exhaust runner, or he wants to be taking plug readings on the side of the highway (WOT, key off, coast down) to see what the spark plugs have to say, then I would seriously consider flowing it.

thats just me though.

[dash]

I'm all for custom work & trying stuff,but....At what point would you wanna get rid of the fine performing stock intake tho ? Chasing a 'peak hp number'.... race car ?It has made well over 400 ft-lbs tq on street CAs

[Torpor]

I think there is a little confusion here , I'm not asking for approval from you guys to install this intake,I will not be crying on your shoulders should my motor fail. I accept your warnings and support thank you very much for this.

Now lets move on because I will not be removing the manifold can anyone help me with the bellow question.

I have found One picture on this forum where the member has bypassed the inlet

----------------------------------------------------------------------------------

The Water line running under the intake need to be re-routed

Quick question to all the guys on the fourm there is a Pipe leading from the thermostat intake manifold (Pic 1) under the old intake to copper hard line under the intake (pic 2) .

Can this Pipe be removed and If not why?I know it could be a water cycle but my thermostat says partially open so can it be discarded

[float_6969]

It feeds coolant to the oil cooler and heater core. If you don't care about heat and will install an aftermarket oil cooler, then yes, you can ditch it.

[Torpor]

Thank You Man

[float_6969]

NP.

[Torpor]

Ok, the Car does run alot hotter and there is a sucking sound comming from the intake (Maybe to be expected).Does anyone have the same sound from theres? Will double check for air-leaks

Had to extend 4 Connections (TPS,Idle control, Aircon, FICD) . High Idle still works along with the Air-con control valve.

Car seems flat down low (Also expected), I will install a new set of plugs then give her abit of a run like recommended. I will post the pictures of the plugs.

Thanks again Guys

Installed pic's




Modified by Torpor at 9:14 PM 2/4/2008

[float_6969]

Good luck. Can't wait for the plug pictures.

Also, the intake from the intake building company in Austrailia didn't loose any bottom end.

[Torpor]

Ok Guys due to the Fact that Photobucket was having issues last night, I couldnt post the Pic's of the plugs yet.

I will post them tonight

[Torpor]

OK , the car is running at 8 PSi and 16 deg of timing

Plugs are from right to left (1-2-3-4)

[float_6969]

#4 looks like it might be a little leaner than the rest.

Better pics of the porcelan would help too.

[IggyEGuana]

I like it. Any thoughts of doing one to replace the whole manifold. Maybe relocate the injector and fix the problem with fuel only going through 1 valve.

http://www.driftopia.com has a bunch of real good tech articles on the CA and one of them is about simplifying the cooling system. Will answer your questions on the coolant lines.

[Torpor]

Car is going Strong. Plugs are looking good.

I admit, I did have to fiddle with the ignition timing and fuel pressure a bit, She is running at only 8 psi (0,5bar) and is as smooth as silk

I really don’t think its to bad for a $200 part.

[float_6969]

Just keep an eye on the plugs and make sure you're not seeing any big differences between them.

If you don't, then I think you did well, as long as it makes more power.