DNP Manifold...CRACKED!?!

[92awddsm]

great for you sir. ill just not speak of anything else, because obviously you have not read everything that I have posted, including having to do with the amount of penetration a weld gets and how much stronger it is with a thicker amterial, causing the weld to be stronger as well. If you don't want to listen to me, listen to commen sense and stated facts about metal work.

OK, since you know it all, then you should know that the weakest part of a weld is right at the edge where the heat and puddling has thinned the material. It isnt as drastic with a tig as it would be a mig but it is still the weakest location. Anr regarless of the material, the weld is always the strongest part. So in turn, if it was faulty or thin material, it would have cracked at the edge of the weld, not the center.

The only thing that happened here was a weak weld(probably due to low gas pressure or contaminates in the rod itself) and it had nothing to do with a thin tube. I am not speaking out of my ass, I speak from experiece. I have been a certified machinist for about 12 years and probably welded as many pieces together as dnp has in its history. Now, when you do some learning and research, you might find that all of your answers posted thus far have been a little off.

 

[CatchMe]

...

 

[4G63 For Me]

On a side note - dont take this as me bashing DNP, but I am a unsatisfied customer. And you can take that for what its worth.

I'll take that for enough NOT to buy DNP. I totally agree with what you're saying, absolute BS. If you make a product, you should stand behind it. How much would it really cost them to repair it? Not much at all.

 

[TSiGoesPsSsSst]

...

You wont see me buying a manifold off them after this,zach.
SBR has become my #1 choice after hearing about your ordeal with dnp.

 

[CatchMe]

Im going to give DNP one last shot to take care of this . I'll let everyone know what happens. Im sure this thread may be a deciding point when people are researching if they want to purchase this manifold over others (like SBR's tubular manifold ) I wrote Don a email:

Don,

For the price tag on your header, I believe your warranty (and its extended option for that matter) are far from sufficiant. A 600$ header that lasts 5k miles is not acceptable. I'm sure its just a fluke problem that only happend with my header, but I think its far from fair that you have no other options than a 250$ "extended warranty". Let me know what you think. http://www.dsmtuners.com/forums/showthread.php?t=200574
Thanks, Zach B.

Lets see what happens...
Although im sure it will be nothing.

 

[jdmspilner]

I thought Slowboy sold DNPs?

 

[CatchMe]

I thought Slowboy sold DNPs?

They do.

But now they make thier own tubular manifold - which is a copied design of DNP's but the best part is it only costs $488.98 to DNP's $599.00

I wish the SBR manifold was a option back when I bought this DNP manifold...

 

[TSiGoesPsSsSst]

Slowboy DOES sell DNP products.But they also sell thier own tubular manifolds for a bit cheaper.
Im interested to see how this pans out.This ''extended warranty'' crap is unacceptable for a $600 manifold that only has 5k miles on it.Zach rarely drives the car to keep it in flawless shape,and I can vouch for him on that.I really think dnp should take it upon themselves to stand by thier product and at the very least,repair this manifold...
I will lose alot of respect for thier customer service unless they do otherwise.Im sure that goes for alot of us here reading this post.


EDIT* beat me to the reply,zach.

 

[definitiveno]

God I hope I don't get in trouble for this, mods remove my post if it's against vendor policies.



There is a company called RNR-Racing that specialized in exhaust products from manifolds to mufflers...........they build an equal leangth manifold (8g stainless) and have a full warranty on it. I forgot how long, I wanna say 3 years, but they will completely replace there manifolds no questions asked.

They send you a new manifold that way so their's no down time, and you ship them the old cracked one after it's been replaced.

Evo guys love them and have had great success with them. Pricey though.

 

[snox135]

I understand you aren't real happy about there extended warranty option for $250 with a new manifold. So basically they are offering you a new manifold for $250. In reality they didn't have to do anything at all. The fact that they are taking your word on the 5k and offering you something says quite a bit for there customer service. But if i were in your shoes I still wouldn't be real happy about it cracking.

It's hard to tell from the picture but the weld on the manifold almost looks like it is slightly cold lapped. I am a certified welder and that crack is do to a faulty weld and not material. As most welders know a proper weld is the strongest part of a weldment.

 

[dsmsucks]

i never stated they were bad, but the material is not thick enough to withstand cracking. personally, i would never buy one, because of that. They look amazing, but without bracing to the turbo like stated above, you will have issues like this. Its not just a dsm thing. A manifold is a manifold, and knowing that the material being used is somewhat a thinwall material, its commen sense knowing that it needs to be atleast braced to wihtstand years of use.

Damn everybody is giving you a hard time. In all your post I didnt see where you said you knew everything about dsm. Give this guy a break I just passed welding class, so I understand where your coming from about the metal thickness
But that really has nothing to do with this crack. Its on the weld

 

[Stapl3]

Original poster: Are you using the bracket in the middle of the bend on the downpipe like stock? Using that bracket takes a hell of a lot of load off the manifold.

I suggest getting it reTIG welded at a local place for 50 bucks and attaching your downpipe to the block with a bracket of some kind. Best of luck.

 

[TurboAnything]

This is a fluke it has to be i just got a dnp for a 3065. There are no extra mounts for the downpipe as Ams dos not put them on there downpipes. There is close to 2500 miles on it now so we will see if it cracks soon, as it is perfect right now. And i love 3rd and 4th gear pulls and that gets the manifold hot ass hell.

 

[qtxdevilz]

and you will continue to loose them talking like you do. you have not released 1 fact yet.

is that why they put it back now?...i just dont like the fact that someone was bashing on a dnp manifold without having any experience with them...especially since i have one......

 

[qtxdevilz]

quick question...for the $250 they will send you a new manifold...did they say anything about sending the old one back?because im sure you can get rid of the old manifold to a member on the board for around the same price so you will be straight...

 

[CatchMe]

quick question...for the $250 they will send you a new manifold...did they say anything about sending the old one back?because im sure you can get rid of the old manifold to a member on the board for around the same price so you will be straight...

They want me to send this one back. This would mean the end of the season for my car. I bet it would take about a month to get the new one and by then it will be November.

I still havent heard back from Don @ DNP yet - concerning my last email.

 

[1993eclipseGS]

So much for a $600.00 manifold.

 

[TommyDSM]

I'm using the DNP 40mm Manifold with External Dump and have no problems. Using SBR GT-11 Turbo. What kind of Dump tube do you use, flex one or welded pipe?

Also what do you expect. When you bought it you had to know the warrenty on it... Doesnt matter if you had it for two years and only put 5k miles on it... Still over 1yr warrenty... If it was with in 1 year and 5k miles, you think they won't give you a replacement? You think they give you a hard time just because? I mean you just happen to be unlucky enough to had it happen to you... I would either take the $25o WHICH is a deal i believe, or pay a welding place to weld it for $2o bucks your choice... I dont' think any company is going to replace anyting if its outside the warrenty... so I dont' think it has anything to do with standing behind their products... You can be pissed all you want, but not going to change a thing...

 

[4G63 For Me]

I don't see what is wrong with a lifetime warranty. It is quite obvious there was a flaw in the weld, which would fall under the "defect" category and should be replaced/repaired. I'd understand if it was something caused by wear and tear, or an improper installation. This is obviously a defect.

 

[ddavisaf]

When dealing with customer service, I have always found it better to converse with a person instead of a computer. Try to sell a car over the phone, then try and sell it face to face. You'll find it's alot easier to sell it face to face (as long as you're not a damn bloody liar).
Like I said before, no one is perfect. DNP makes great manifolds. Unfortunately you happened to get the one bad one out of the bunch. Considering their reputation among DSM owners, I don't think they're trying to screw you.

If you want a chance at seeing some results, call the dealer. Explain to him your problem, and be courteous. You'll have a much better chance that way.
Good luck, I hope everything works out well for you.

 

[gsx951]

304 is some pretty tough shit but it really doesn't have the hot strength that the stock cast manifold has. The O.E. manifold uses bracing; that shouldn't go unnoticed. Heed the advice of many previous posters and don't allow your turbo to dangle from your header.

Clean the interior and exterior of the manifold so that it is perfectly clean, free of all carbon and oil and take it to a local welder. The repair will be easy. Get them to either flux or back-gas (purge) the tube being welded and it will be like new.

 

[CatchMe]

I'm using the DNP 40mm Manifold with External Dump and have no problems. Using SBR GT-11 Turbo. What kind of Dump tube do you use, flex one or welded pipe?

Also what do you expect. When you bought it you had to know the warrenty on it... Doesnt matter if you had it for two years and only put 5k miles on it... Still over 1yr warrenty... If it was with in 1 year and 5k miles, you think they won't give you a replacement? You think they give you a hard time just because? I mean you just happen to be unlucky enough to had it happen to you... I would either take the $25o WHICH is a deal i believe, or pay a welding place to weld it for $2o bucks your choice... I dont' think any company is going to replace anyting if its outside the warrenty... so I dont' think it has anything to do with standing behind their products... You can be pissed all you want, but not going to change a thing...

You are missing the point here. The most expensive DSM manifold should come with a better warranty. Its not the fact that my warranty has run out. They arent giving me a hard time and you are a moron if you think $250 is a deal to fix a DEFECTIVE manifold that I already paid 600$ for.

Try thinking before you type.

AND IT HAS EVERYTHING TO DO WITH STANDING BEHIND THIER PRODUCTS...

Infact they say so themselves:

Hello Zachary,

We stand by our products so we will replace the manifold free of charge if
it is a manufacturer defect. Please send the manifold back to us with the
original invoice from where you purchased our product.

If you have any questions please feel free to contact us.

Thank you,

Sunny
DN Performance
Phone: (585) 727-4336
Fax: (585) 427-7180

Im glad DNP has decided to take care of this.

 

[4G63 For Me]

Hello Zachary,

We stand by our products so we will replace the manifold free of charge if
it is a manufacturer defect. Please send the manifold back to us with the
original invoice from where you purchased our product.

If you have any questions please feel free to contact us.

Thank you,

Sunny
DN Performance
Phone: (585) 727-4336
Fax: (585) 427-718

Now THAT is what I'd come to expect from a company like DNP. After reading that, I wouldn't be so hesitant to give them my business.

 

[snox135]

The DNP is no where even close to being the most expensive DSM exhaust manifold. There are manifolds out there that will fit a DSM for $2,600. So $600 for an exhaust manifold is not that much

 

[92awddsm]

The DNP is no where even close to being the most expensive DSM exhaust manifold. There are manifolds out there that will fit a DSM for $2,600. So $600 for an exhaust manifold is not that much

If its not that much, why dont you have one? As a normal, non sposored, non race professional, I consider $600 a fair amount. Now, if you spend $100k+ a year racing, then $600 isnt much. And imagine that warranty on the $2600 piece. What, 3 mile or 3 minutes, whichever comes first?