Neukin Turbo Manifold
04-03-08, 07:32 PM
#27
so what instead of supporting a quality manifold you would rather everyone spend money on china bullshit ??
04-03-08, 07:34 PM
#28
The correct way to plumb wastegate runners is at a very shallow angle to the main runners, with the opening of the wastegate runner facing the exhaust flow. However due to space limitations this is not always possible since most people don't want their wastegates sticking up above the turbo near the shock tower. 
A great place to put runners is to "Y" them in right at the exhaust ports and have them curve around between the exhaust flange and turbo flange to exit at the rear. Starts to get tricky as you don't want really tight bends to restrict flow.
A great place to put runners is to "Y" them in right at the exhaust ports and have them curve around between the exhaust flange and turbo flange to exit at the rear. Starts to get tricky as you don't want really tight bends to restrict flow.
04-04-08, 05:10 AM
#33
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um 2 runners to the wastegate from both main runners lol im sure there wont be any problems with spike. so if you want to make one better lets see it lol with less hard bends and not completely crowding everything. hey if it doesnt work i will be sure to let you know
so what instead of supporting a quality manifold you would rather everyone spend money on china bullshit ??
so what instead of supporting a quality manifold you would rather everyone spend money on china bullshit ??
A pair 'o 38mm WG's cost almost the same as one big one...
For example, an HKS 50mm or 60mm WG is around $600; a Tial 38mm WG is under $300 each.
I didn't say it wouldn't spike.
I just claimed the pipe layout is not efficient.
There is a difference.
You can, in theory, run a gigantic wastegate with inefficient pipes...
It's the same as running a smaller wastegate with more efficient passages.
I helped hIGGI make his turbo exhaust manifold for his GT35R + HKS GT 60mm set-up.
You can find pics of it if you do a search.
If you have no clue what I'm talking about, go pick up a copy of Corky Bell's "Maximum Boost".
He does a good job of describing wastegate plumbing.
It's obvious that your turbo exhaust manifold slapped on the wastegate pipes as an afterthought.
Position of the initial pipes are positioned as a matter of convenience rather than exhaust gas efficiency.
It's actually better to get the initial split path right and then run a hard bend into the wastegate itself.
The exhaust gases are already "trapped" due to the better split and will tend to flow better versus slapping on a pipe at almost a perpendicular angle to the exhaust gas vector on the main pipes.
Irregardless of arguing lack-of-space, this can still be done.
Be glad you don't own an FD, cause the FD eats up almost another inch of space from engine to frame rail.
Actually, there is a very easy design to combat this...run the main pipes upward.
Run the wastegate pipes split straight out and then curve both back to the wastegate mounted in the rear.
I've seen designs like this before already.
Oh, and if you're wondering why turbo exhaust manifolds I buy...
I have a $500 XS Engineering cast and a $700 HKS T51R stainless sitting in the closest.
Sorry, no Made-in-China crap for me.
-Ted
04-04-08, 09:53 AM
#34
Engine, Not Motor
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It's not really that hard. And certainly should not be a concern if a company is producing manifolds for sale. There is no excuse for a production manifold to have wastegate runners exiting at 90 degree angles. A simple way to avoid this is to connect the wastegate runners at the outside of bend. Even if they are a 90 degrees to the bend, the exhaust flow will still be encourage to flow through them. This is how I designed the manifold for my car and boost control has been rock solid so far.
04-04-08, 02:25 PM
#37
It's not really that hard. And certainly should not be a concern if a company is producing manifolds for sale. There is no excuse for a production manifold to have wastegate runners exiting at 90 degree angles. A simple way to avoid this is to connect the wastegate runners at the outside of bend. Even if they are a 90 degrees to the bend, the exhaust flow will still be encourage to flow through them. This is how I designed the manifold for my car and boost control has been rock solid so far.
this manifold was made not to be the TOP dollar most expensive but to be somewhat affordable to fc owners and also have a much better design and quality than alot of the china manifolds and compete with other great manifolds such as hks, full race ect.
04-04-08, 03:44 PM
#38
Engine, Not Motor
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The more exhaust flow there is, and the more boost you run, the more important it is that the wastegate runners be designed correctly.
Welds are not an issue if done properly. Generally speaking this means welding with one grade higher of stainless filler then your base material, backpurging and just knowing how to make a good bead.
I'm not saying it's a poor manifold, just that it has the flaw that almost every available manifold seems to have.
Welds are not an issue if done properly. Generally speaking this means welding with one grade higher of stainless filler then your base material, backpurging and just knowing how to make a good bead.
I'm not saying it's a poor manifold, just that it has the flaw that almost every available manifold seems to have.
04-24-08, 12:15 AM
#39
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Those wastegate ports where placed in a partial bend on the runner to help direct the airflow, thus its not afterthought, but nice try Ted
The longer runners before the collector was to help prevent airflow from wanting to cross from one wastegate port on runner 1 into runner 2. The wastegate collector was placed farther from the main runners for this reason.. again thinking not just slapping stuff together here lol though i will admit we aim for less welds and ease of manufacturing to offer a better prices sometimes.
Unlike that coated manifold pictured and others our manifolds do not use a 40mm inside diameter primary runner. Our runners going to the divided turbo flange are 51mm. As you may know the ports on the 13b are usually about 50mm. Again i see a pattern, no afterthoughts.
If your sure your manifolds where made in the usa you might be disappointed as HKS and XS have many parts manufactured in China. Neukin manifolds are made in Fort Wayne, Indiana. We might not have larger profit ratios but we have good jobs, something we all should keep in mind 1/2 the time. As i stray off the subject here id like to say ill be honest iv bought things off ebay and when i got them i was totally let down after telling myself it was totally worth the $50 i spent on it. I almost feel like i did something wrong afterwards, like watching a little kid drop a dollar and putting it in my pocket to buy my next car magazine. Id really give that kid his dollar back though, it was just a example ha.
(btw Ted i see your in HI, tell those guys at Vakamon racing to send our darn sr20 manifold back someone there thought it would be funny to steel the sample we sent them lol.. not funny but really im serious)
-Alex
The longer runners before the collector was to help prevent airflow from wanting to cross from one wastegate port on runner 1 into runner 2. The wastegate collector was placed farther from the main runners for this reason.. again thinking not just slapping stuff together here lol though i will admit we aim for less welds and ease of manufacturing to offer a better prices sometimes.
Unlike that coated manifold pictured and others our manifolds do not use a 40mm inside diameter primary runner. Our runners going to the divided turbo flange are 51mm. As you may know the ports on the 13b are usually about 50mm. Again i see a pattern, no afterthoughts.
If your sure your manifolds where made in the usa you might be disappointed as HKS and XS have many parts manufactured in China. Neukin manifolds are made in Fort Wayne, Indiana. We might not have larger profit ratios but we have good jobs, something we all should keep in mind 1/2 the time. As i stray off the subject here id like to say ill be honest iv bought things off ebay and when i got them i was totally let down after telling myself it was totally worth the $50 i spent on it. I almost feel like i did something wrong afterwards, like watching a little kid drop a dollar and putting it in my pocket to buy my next car magazine. Id really give that kid his dollar back though, it was just a example ha.
(btw Ted i see your in HI, tell those guys at Vakamon racing to send our darn sr20 manifold back someone there thought it would be funny to steel the sample we sent them lol.. not funny but really im serious)
-Alex
04-24-08, 01:21 AM
#41
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http://forum.teamfc3s.org/showthread.php?t=60005
04-24-08, 04:42 AM
#42
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For the prices I've seen posted, I'd rather make my own.
(btw Ted i see your in HI, tell those guys at Vakamon racing to send our darn sr20 manifold back someone there thought it would be funny to steel the sample we sent them lol.. not funny but really im serious)
I wouldn't touch them with a 10-foot pole.
They are run by a bunch of idiots...well, at least I wouldn't trust them with ANY rotary vehicle.
Good luck trying to get your stuff back...seriously.
-Ted
04-24-08, 08:38 AM
#43
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Id also make my own manifold Ted, its just too much fun if you have the resources. Well glad i found out what people thought of them (Vak) after i shipped the manifold. 
The 42R will fit in FC, here is a picture of the vmount kit installed. This turbo is a 4088. Rob the owner ran up to Aspec and with dirty filter bags (old fuel tank) put down about 410whp@16psi just for a idea though the sesion was pretty bad since he went through 6 filter bags as fuel pressure dropped. Surpised they even kept toying with it. Just put a cell and 2 walbros in so this time he should get some real numbers. Will test on a FD here soon, working on getting a 42R in a S2000 right now lol not fun
The 42R will fit in FC, here is a picture of the vmount kit installed. This turbo is a 4088. Rob the owner ran up to Aspec and with dirty filter bags (old fuel tank) put down about 410whp@16psi just for a idea though the sesion was pretty bad since he went through 6 filter bags as fuel pressure dropped. Surpised they even kept toying with it. Just put a cell and 2 walbros in so this time he should get some real numbers. Will test on a FD here soon, working on getting a 42R in a S2000 right now lol not fun
