it'll flow slightly slower than the log (we're talking about +/- 100 rpms probably)...but the extra "directional exhaust guidance" will help it flow much better after that. That's a really short merge... a smoother and merge where the exhaust from the primaries have the least amount of "i'm going to run into you before I leave" will net the best flow/power.

Here's a log vs. ramhorn
FINALLY -- TURBO MANIFOLD TEST (What happens when a log manifold is changed to a Full Race Manifold? - Honda-Tech

There's really not much to it. Allow the gases to flow and merge with minimal interference. This nets highest flow... flow = power, no?

 

Bam proof is in the pudding. No need for any comparos on our parts I dont think.

 

Add the price of whatever EWG flange and another $50 or so for labor to cut a hole in the mani, fit & weld a section of pipe.

 

Because that's what everyone else uses?

 

I should start putting watermarks across my pics I guess.

When using a garrett 56trim T2 flanged GT2871, that above manifold places the shaft at the same spot as my standard manifold.

Every now and then I consider making it, as well as a ramhorn manifold (which is easier to build), that places the turbo in the same spot (so downpipes are as equal as possible) and running a comparison. But then I realize it really doesn't matter as everyone will have their preferred option. You can get a ramhorn from many places so i don't build them, and I don't think it'd last long enough for my lifetime guarantee from cracks. If someone comes out with my manifold for less than what I charge and demand drops, then I won't them either

I also agree that actual construction plays a huge roll in how well the manifold performs, in terms of how smooth everything blends together.

 

Sorry Tim, didn't mean to offend or take credit for anything, was just using it as an example. And as far as it not mattering whether or not you build it, I think you've got enough clout that if you build something and give it your blessing, it will become a lot of people's preferred option just like your current design...

 

Tim, did you make this mani?

Id be interested in something like that with a dp for my 1.6.
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BITCH i don't get ******* offended. Make love not war

 

I didn't make this just modeled it to help someone else here. It looks cool to me though as it's kinda sorta like a less tight version of my begi/fm replacement mani which worked surprisingly well on my car. But the length and # bends between primaries are more matching on my standard mani so I never really considered making it. There's a slight raw material cost advantage (~$20?).

But I have a 1.8 so no downpipe can be made or guarantee of fitment. I'd have to build it on a bench and hope it doesn't hit anything.

 

We need to get you a 1.6 car so that you can start making manifolds/dp's for them too. There's one in tom's river for sale for 1300. Sell enough things off it to off set the cost and you're golden. If i see one for less I'll try to jump on it.

 

I could make it but my exhaust is far from stock so all I could do is an open ended downpipe for you. Also I cant weld stainless so it'd be in mild steel. But it'd be cheap!

Enter ARtech? You'll also need a modified mixing manifold.

 

The problem is it's comparing a basic log to a well built equal-length ramhorn, not to a shorty equal-length tubular with a mini-collector.

 

Are you talking about making one like posted above?

 

Yes thats the one I think i'm going to end up making most of. I might make one more exactly like mine (except in mild) for one friend who actually seems to prefer that design for some reason.

 

Where would I put that?

 

Right next to the firepit.

 

That's where I'm parking Meg's boat.

 

paul or bruce dont have a few they could lend out?

 

Just build the dp so that it sits right where the stock cat would be, maybe a few inches longer. How would you design the dp? full 3" right off the turbo?

Mild steel would be fine, could get it coated before installing.

Just flipping it around might work. Either way, that's a simple fix.
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Only 1.6 that Paul has on his property now is a 91 or 92 but it has the Italia body kit on it with the Italia exhaust. It would probably work to test fit the manifold and make a downpipe, but Paul's looking to sell it soon.

I have no idea what Bruce has anymore. lol