3sgte Intake Manifold Flow testing... Please chime in...

Sifu

New member
Hiya guys. I'm going to drop some money on some flow test for the 3sgte intake manifolds. I'm wondering if anyone has any spare intake manifolds they can lend me?

Basically I'm looking for anything just for future reference for the Alltrac and MR2 crowd.

I currently have
- ChrisK Sidefeed
- ChrisK Centerfeed (Thanks Major!)
- Stock Centerfeed
- 3rd Gen centerfeed (Thanks MR2Twint!)

I would like to also test
- RMR Center
- RMR Sidefeed
- Jun/Replica centerfeed
- '86-'89 ST162 3sge side feed
- Anything (if you have any other intake manifold for another auto then let me know)
*I will also need the throttle body if you can. It's not necessary but it will help*
Any help is appreciated. I'm taking it to a Harley garage in Rochester just for a simple flow test. I also want to make sure that my sidefeed intake won't lean out on the 2nd or 3rd runners. I figured I might as well test some other stuff while I'm down there.

I can't offer money to anybody unfortunately. I'm already doing this out of my pocket. If anything you're doing the community a big favor. Thanks...

Also. If anyone wants I will pay for shipping for their manifold. I know it's a bold move but it'd be nice to have as many as I could for these tests.

I'll post this in the regional section as well.
 

turbo4wd

Moderator
Is it safe to assume you've hit up both the Celicatech and MR2OC boards for stuff as well? I know some guys on the MR2OC board have used the 3SGE side feed manifold..

Have you tried getting a hold of Griffin via PM? I know he built his own flowbench - he's in Houston..
 

MrWOT

New member
Hmmm, not trying to put a damper on this, but thought I'd chime in. I've been working on CFD modeling lately, and I have found that flow and distribution per runner will change, sometimes radically, depending on the pressure and velocity coming into the manifold, as well as piston velocity/position and valve timing. Not trying to say it isn't worth doing, but it won't reflect how it will perform when on the engine.

Dyno results also won't tell the whole story as they don't take part throttle into account and will vary drastically depending on mods, esp headwork. The more I test this out and learn about it, the more I have come to realize that the plenum is just as "per application" an item as headwork! One manifold may have amazing results on a stock head, and when put on a ported head, there goes the neighborhood :shrug:

I've been experimenting with a dual plenum design through trial/error/intuition and what I have read on other sites and observed in existing dual plenum manifolding, but even if I got it shaped right, it's going to be silly hard to make and well beyond my skills to do so, really needs to be cast :(

Now, there IS one thing a flowbench will tell us. From my observations and from what I have learned from asking fabricators, the manifold needs to flow ~5% more then the head. The bench will tell us which manifold meets that point, so would be suitable for best power (in theory) but it doesn't answer the dynamics of the plenum.
 

Sifu

New member
I've been waiting from a reply from Griffin. I was going to purchase some stuff but I haven't heard from him in a long time. He did mention that his ChrisK. centerfeed flowed better than the RMR (not by much).

I've checked my local forum, MR2oc and here.

We are just going to do a simple test. It would be nice if I could get a head for the setup but then that's going to cost me more money and I don't have any spares to use.

I got a good quote to test a whole bunch of intake manifolds so I figured hell why not?

Thanks for the input. I originally wanted to just test my new intake setup and asked that question to the specialist and he said to just bring them all in and he'll test them for a cheap price...
 

CMS-GT4

Active member
I wish we could get that silicone hose custom manifold in on this. I would like to see how well it does.
 

Sifu

New member
CMS-GT4":1vm8a8id said:
I wish we could get that silicone hose custom manifold in on this. I would like to see how well it does.
I don't think I've seen that one...
 

CMS-GT4

Active member
I can't seem to find it in the forums. He sold it here and a member bought it.

He made a flange that bolts up the the engine that has outlets. Then he used 90 degree samco hoses. On the top was a custom plenium.

It was a very clever low buck idea. I am curious how it performs.
 

Sifu

New member
I wonder how it would hold for boosting applications? What kind of clamps did he use?
Worm clamps? :twisted:
 

CMS-GT4

Active member
I forget the clamps. He was missing a hose too. If we knew it flowed well, then it would be the perfect upgrade for most people.
 

grip addict

New member
i remember the one you were talking about. i be tthat thing was probably pretty decent as far as insulation/lack of heat transfer. unfortunately, it would suck x10 if one of the clamps came off or loose. on the other hand, it might have made taking the im out of the car alot easier. i am curious to see how it would do, but i would guess that it didn't flow very well.
 

Mafix

New member
i didn't think that manifold would be good. it's all held in place by rubber. there is a reason manifolds are metal or hard plastic.
 

Denver_whiteST185

New member
CMS-GT4":2snykm92 said:
I forget the clamps. He was missing a hose too. If we knew it flowed well, then it would be the perfect upgrade for most people.

your talking about rm2932
he wasn't missing a hose, but he cracked one of them. he made 430hp on that manifold at 22psi in one video he posted, thats still on his myspace page. personally, i think its a bad ass design, as long as the plenum is secured to the head/block with a bracket. thick silicone shouldn't balloon up too much, no more than a silicone peice leading to or coming off you front mount.

i don't think it would really hurt the engine if it blew off. i mean, you use silicon for your intercooler piping, which would be just as susceptible to blowing off, and as grip addict said, it would make getting to everything on the back of the engine SOOO much easier :p

edit: pics
parts002.jpg

parts001.jpg

enginebay.jpg

parts.jpg


rm2932's new manifold
allsmack012.jpg

allsmack011.jpg
 

RWDragoon

New member
I have a RMR Sidefeed with stock 2nd gen throttle body brand new in box that I would love to see how compaired. Where are you at?
 

Sifu

New member
I'm located in Minnesota. If you'd like send me your zip and I'll pay for the shipping. As the board members here can attest I will not steal your part; as shiny and nice as it is... :p

But I do have to say that I've heard some shipping stories (delays). I've been told that FedEx and UPS are the best. If you're interested then let me know.
 

Sifu

New member
I'll be heading down there in about 2 weeks. I'm really hoping that it'll be Feb. 16th but I can delay it for the week after that if there is more interest. I would really like to get as many as I can to test out. After that I would imagine it being sent back ASAP. Let's just say that you'll get it before April.

Just a side note.
We can get a more accurate reading if I provide a spare head for the 2nd test. They can analyze it much better but again this test is much more $$$. Plus I'll need a spare head that will need to be disassembled.

For this reason I have not opted to do this. I think a better example to use is 'how well does a stock 3sgte intake manifold flow compared to X intake manifold.' We all know that other intake manifolds will flow better than A or B but to what level and to what degree. If anything we can use this for future debates or reference.

As stated earlier every intake manifold is going to work differently for each application. A stock head will give different readings than a ported/modfied head. I'm trying to keep this as unbiased as possible and hoping that everyone who can contribute will try. Doing this at one place, one machine, one tech, etc. can eliminate the finger pointing that can happen. Again this is not to show off who's intake manifold is the best, just information for us.

Sure most of us will probably never swap out the intake manifold but I've been noticing more and more Alltracs aiming for higher HP. It's nice to get some references from the MR2OC but at the same time we need our own database. Plus even though many of our engine bits can be shared there are still many issues with placement and fitment. Plus the bonus of weight being saved. Dear lord the stockers are pretty heavy.

OK I'm done ranting...
 
Top