MOTORDYNE ART Pipes - Review

Urbanracer

Looks like its time for a new exhaust.

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09 Nismo - HKS | Berk | HPS | K&N | Zspeed
09 Maxima | 09 CBR 1000RR | 02 CBR F4i

Juruki

Is this exhaust gonna be lowered car friendly?

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09 370z - 7AT
Volk Racing TE37SL / BC Coilovers / Berk HFC / TopSpeed CBE + Y-Pipe / Mines Spoiler

Motordyne

yes.

Motordyne

UPDATE: I spoke with my fabricator about the time to complete the first production run and he estimates we can have the first production run completed by the end of January.

The work has already started.

We will also try to get at least one done ahead of time so I can post clean pictures for you.

anthonyy

37drift

Definitely need some drive-by videos. I think I was expecting something completely different this whole time. Listened to these several times on my Macbook Pro and also with high end on-ear headphones. Sadly, my current setup sounds way too close to consider the change for now.

I guess I was hoping for less of the raw metallic sound and more of an exotic throat throughout the entire powerband. I'd like the high frequencies to be muted more somehow. It's unfortunately still got that noticeable "ting" to it, which at this point I'm assuming cannot be masked. It must just be a rasp associated with our engines that cannot be shaken.

Fingers crossed for the tamed down version, and also for some dyno results. I'm personally willing to sacrifice a little HP and TQ for perfect tone. After all this time, I really want a reason to purchase this when it becomes available for the G37. Props to Tony for all of the work he has put into this though. If nothing else, I'm sure the quality will be unmatched and this will put down unmatched numbers on the dyno.

Ni55anPat

anybody have the ART pipes with topspeed exhaust/ypipe?

Would love to hear it before i pay for the pipes

Flyboy

Just ordered my ART pipes. First mod on the Z I'm worried about how the red RTV is going to hold up instead of gaskets. Anyone have any experience with this?

ronn1

You can order those (upstream 3 hole) high temp gaskets from BERK Tech direct. I'm doing this with my FI Resonated HFC...they also use RED RTV instead of gaskets.

Flyboy

those are Graphite. That's the gasket the Tony said will go bad..

Are any of the guys using Berk Pipes having issues with these gaskets?

ChrisSlicks

Yes, they didn't last either.

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Hotchkis ARB | Stillen CAI | Art Pipes | Berk CBE | Stillen AP Racing Brakes | AE Performance Oil Cooler | BC Racing ER Coilovers | Doran Control Arms

ronn1

I'm installing my Resonated HFC on Friday. I wanted to use Berk Gaskets and he said using those Gaskets instead of RTV would be fine! In fact, he's having gaskets made up himself. He did mention that you couldn't REUSE those though.

harp00n

Yes, I believe I had them on my Berk's HFC and they SUCK

After a year they start to burn and when my mechanic took them out he said there's nothing special about them for their price. And rebuilt my pipes to fit the OEM metal round gaskets, which I had ordered before assuming they would fit between the HFC and the pipes to the upper manifold. Still got no problems!

AlphaSnacks

RED RTV sealant works just fine.

I also have a set of Berk gaskets (from their resonated test pipes) that I was given. I'll be using them in conjunction with RTV once my flex sections are replaced next week finally.

ronn1

I was thinking of doing the same thing..RTV plus Gasket. I'm also planning of replacing the flex sections with beefier ones I just purchased.

Here it is..read *description* portion..interesting.



Anatomy of a Flex Pipe

A flex pipe is made up of a variety of components. These components may vary somewhat from manufacturer to manufacturer, but typically are made up of steel accordion type bellows. These bellows are often covered with a braided steel reinforcement, which prevents the flex from stretching too far and protects it from damage. Some will also contain an inner braided steel covering or a solid, floating insert, which functions to reduce exhaust turbulence. The ends of the flex usually have a solid steel shield, which joins the braided covering and reinforces the connection to the exhaust pipe. In the case of replacement flexes, they may or may not have pipe extensions which allow it to be easily welded or clamped into and existing exhaust system. The flex pipes are rated by diameter and length from end to end, not including pipe extensions. Pipe extensions are approximately 2" long, adding approximately 4" to the total length on the unit.


Differences in Flex Pipes

Flex pipes can be made from a variety of different materials and can also differ in their construction techniques. Some companies use ordinary steel, which can rust and corrode and/or may use aluminized steel (ordinary steel with an aluminum-based coating). These materials typically do not last very long as compared to stainless steel. Additionally, many companies will crimp the fittings together, which allows water to become trapped in the crimped joint, encouraging corrosion. Some flex bellows are formed as a continuous helix, which can create exhaust turbulence and, in general, indicates that poor construction techniques are used. Some companies have a loose braid pattern on the outer and inner coverings, which allows the flex to stretch too far, causing premature failure. There can also be variations in the gauge of materials, as well as the exact type of materials that are used, which has a significant influence on the price and longevity of the joint as a whole.

Bear River Flex Pipes

We do not compromise on our flex pipes, which are made entirely of stainless steel. We use 304 stainless to form the non-helical bellows as well as the braided reinforcements. We use a tightly woven braid pattern for greater strength. Most of our flex joints also have an inner braid and are built from heavy gauge materials to last for as long as possible. We believe that you want the best product for your money and that is why we do not offer second rate products.



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