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Old 01-12-2010, 04:21 PM   #41
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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?
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Old 01-12-2010, 04:25 PM   #42
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Originally Posted by wherestheboost View Post
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.
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Old 01-12-2010, 04:33 PM   #43
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So how much more is it for a t3 external wastegate added to that?
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.
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Old 01-12-2010, 04:36 PM   #44
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Originally Posted by ARTech View Post
Look at some drag racing setups, turbo or na. The manifolds are a snake orgy. Why would they use a restrictive design?
Because that's what everyone else uses?
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Old 01-12-2010, 04:49 PM   #45
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When talking about a standard log manifold you're damn skippy that its not going to flow as well. Just look at it.

I'm more intrigued by how this might flow and spool versus a ramhorn style.


And I should be finding out fairly soon as i'm going to be hopefully building 3 or 4 of them as soon as some people get their **** together and buy parts. I'm not even charging for labor, just building them at cost for fun. Actually bob bundy built a manifold with the same concept for a 323 GTX so he should really chime in here. I dont want to post a picture of it without his permission.
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.
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Old 01-12-2010, 04:56 PM   #46
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Originally Posted by TurboTim View Post
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...
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Old 01-12-2010, 04:57 PM   #47
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Originally Posted by wayne_curr View Post
Tim, did you make this mani?

Id be interested in something like that with a dp for my 1.6.
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Old 01-12-2010, 05:28 PM   #48
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Originally Posted by wayne_curr View Post
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...
BITCH i don't get ******* offended. Make love not war
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Old 01-12-2010, 05:34 PM   #49
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Originally Posted by levnubhin View Post
Tim, did you make this mani?

Id be interested in something like that with a dp for my 1.6.
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.
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Old 01-12-2010, 05:38 PM   #50
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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.
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Old 01-12-2010, 05:40 PM   #51
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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.
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Old 01-12-2010, 06:29 PM   #52
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Originally Posted by wayne_curr View Post
Bam proof is in the pudding. No need for any comparos on our parts I dont think.

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.
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Old 01-12-2010, 06:42 PM   #53
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Originally Posted by wayne_curr View Post
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.
Are you talking about making one like posted above?
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Old 01-12-2010, 07:47 PM   #54
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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.
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Old 01-12-2010, 09:30 PM   #55
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Originally Posted by ArtieParty View Post
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.
Where would I put that?
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Old 01-12-2010, 09:36 PM   #56
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Right next to the firepit.
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Old 01-12-2010, 09:42 PM   #57
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That's where I'm parking Meg's boat.
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Old 01-13-2010, 02:53 PM   #58
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paul or bruce dont have a few they could lend out?
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Old 01-13-2010, 02:57 PM   #59
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Originally Posted by wayne_curr View Post
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.
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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Old 01-13-2010, 03:35 PM   #60
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Originally Posted by Braineack View Post
paul or bruce dont have a few they could lend out?
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
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