Tubular Manifold performance question..

[dsmturboawd]

omfg, .

 

[69_luv]

It seems that every post that is put out branches off from the original subject matter.

Do you have an extra $500? You have a cracked mani right now, and its going to cost you half that to buy a ported evo mani, or 2g mani. So do you want to spend the next half to get something that spools your turbo a little faster.
I am sure there is someone here that will argue, but equal length headers are going to give you more hp. I wish I could take the time, and the money that it would take to give you an honest hey this 2g mani gives you this much on the dyno, and this much with a evo mani, and this much with a dnp, but personnaly my closest dyno shop is more than a tank of gas away. my "BUTT DYNO" will have to do for now. It helps, period.

Who you go with is up to you, and if you even choose to get one. It would not be the first thing I would buy. I love my DNP header, it turns colors, it is a little hot, but it just looks incredible under the hood. I think there is nothing more ugly than a stock mani with the shroud covering the turbo and mani.
No it doesn't come with a warranty, and there is a couple varietys out there that could come back and melt, crack, or just turn out to be junk. So if you have the extra money laying around, and feel that you can invest just a little more in your mani, I would say go with it. I would reccomend the DNP from DSMPARTS.COM, because that is where I got mine.

Good luck

 

[Wobble]

well, its not like my car is stock.. its way over 300hp easy as cake and has everything from a 1g head and intake, to full syspension and brembo brakes, to FMIC and hardpipes and all that good stuff..

the next mods (aside from a new header)

are

20g
Cams (prolly not a radical as 272s in and out, but better than stockers)
haltech E6K

maby rods if i need them, or a new short block, who knows, the car is almost paid off (have been paying $550/month on it) so I will have more money to burn if something breaks... i still have the 16g for maby 2 or 3 more months.. then its gone.. just keeping it till i get the car paid off so i dont break it...

Plus, i HATE how the 2g manis look.. i Was looking at the turboperformanc mani for 375ish and get it cermic coated..





also, so man V8 peeps just use header wrap... why cant we?

 

[jdmawd]

Tubular equal length headers will spool your turbo quicker then any manifold. Flow more and offer much better throttle response. The reason that *Most* do not use them is because until recently. A quality header that would not crack easily. Would cost $1000-1500. What Smithy did in his fwd on the bottle using a red is irrelevant.

How many of you guys have had both types of headers on your cars? Here is some reality for your bench racing. FP suggests that the fp3052 will spool around 3800. All those who have posted reviews of this turbo using a 2G or ported evo, have confirmed this. My fp3052 spools 25 psi at 3400.

Remember those rare individuals we like to use to make weak points. Have gone 11 on a 16G and 10's on a 20G. We all know that its possible, but a whole lot easier with a much larger better flowing turbo.


Good Luck.

 

[MNGSX]

I'd bet it would spool even sooner if the runners were shorter and with fewer bends.

Alot of the spool gain is in collector design and has nothing to do with the equal length aspect of that manifold.

You have had both manifolds.

Just look at the hard angle that exhaust has to make with any dsm factory manifold as compaired to the collector on that tubular. The factory manifold makes a 90* turn within it's height. That is one tight radius 90*. The tubular manifold pretty much points each cylinders outlet right at the turbine inlet perfectly. That is where the decrease in spool rpm and hp gains are at.

In no way am I saying that the tubular manifolds are'nt better just that the extra complexity of making them equal length is probably a waste of time and underhood space. Using the same collector and just connecting it to each cylinder with the same size tubing as before but in as close to a straight line as possible will spool even faster than the already faster manifold.

Ported 2g (SBR Pic)

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Burns Stainless

Standard length welded to garret flange

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Super short with V-band

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Those are around $300 just for a ss collector.


An excerpt from Jay Kavanaugh, a turbosystems engineer at Garret

For turbo cars, you throw all that out the window. You want the exhaust velocity to be high upstream of the turbine (i.e. in the header). You'll notice that primaries of turbo headers are smaller diameter than those of an n/a car of two-thirds the horsepower. The idea is to get the exhaust velocity up quickly, to get the turbo spooling as early as possible. Here, getting the boost up early is a much more effective way to torque than playing with tuned primary lengths and scavenging. The scavenging effects are small compared to what you'd get if you just got boost sooner instead. You have a turbo; you want boost. Just don't go so small on the header's primary diameter that you choke off the high end.

 

[DSM007]

Originally posted by gritsak
those SSautochrome manifolds are shit, at least the ones the made from hondas. they would crack within weeks or days if you didnt add extra braces to support the turbo, and even then they would still crack. not to mention the horrible wastegate placement they had that caused serious boost creep problems..the quality did look decent but they just didnt hold up..unless they have made some changes to the making and or design, i cant see them being much better for dsms either

unfortunately the saying you get what you pay for seems like it fits pretty well with manifolds...you might also check out the south florida performance manifold. they arent as bling as the SS manifolds but they work great.

I met a guy once at Moroso here in florida that who loved his south florida performance manifold so much that he.....get this went to the extra length by going to the guy who he sold it to.......tracked it down to someone else just to get it back and replace his ported 2G.....he said it was 3 years old and I saw no cracks in it and still looked good to me...nice large runners on it with thick flanges...(dont worry about equal length runners because we are dealing with an already a restriction with the turbine there)....by my seeing it and what the owner told me.....its a damn good manny and ill giveup my 2G ported for it anyday.....now all I need is money :laugh:

 

[TurboSpoolinIns]

Originally posted by gritsak
do the DNP's come with any kind of warranty?

Yes. 1 year warranty on cracking. That was stated from the girl over the phone when I asked if there was a 6 month warranty. She stated that the 6 month was for all other products.

 

[eclipsegsx9797]

i just bought the dnp t/3 style manifold with a 40mm wg, and all i could say is wow, i love this thing. i have not tested it yet but will shortly. qauilty is great and ive heard nothing but great things about them. i felt that i didnt waste money getting it sense i was going t/3/t4 with a t/3 turbine housing, so i needed an new manifold. was going to go with sfp but i spent the extra 100 for the equal length, better looking, and warrenty.

if the heat does get to hot i will use heat rap, i wouldnt coat it sense that will just burn off over time.


plus i got a great deal on mine from ams