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      10-21-2019, 10:45 PM   #1
mconrad1776
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Headers

Does anyone know about

JKVK headers https://www.aliexpress.com/item/32855804575.html

Or Roundelwerk headers https://roundelwerk.com/products/bmw...ormance-header
Forum: Coupe and Convertible General Discussion Today, 07:04 PM
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      10-21-2019, 10:48 PM   #2
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Roundelwerks good, I just installed them on my friend's car
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      10-21-2019, 10:55 PM   #3
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Quote:
Originally Posted by desertman123 View Post
Roundelwerks good, I just installed them on my friend's car
Wells thats good to know, they just don't look that reputable. I can not even find a phone number or email for them, would you have either of these? Do they have a return policy?
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      10-22-2019, 10:41 AM   #4
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Quote:
Originally Posted by mconrad1776 View Post
Does anyone know about

JKVK headers https://www.aliexpress.com/item/32855804575.html

Or Roundelwerk headers https://roundelwerk.com/products/bmw...ormance-header
Forum: Coupe and Convertible General Discussion Today, 07:04 PM
Lol 260$ headers. I'd love to see someone test that out😂
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      10-22-2019, 06:32 PM   #5
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Originally Posted by LcossE82 View Post
Lol 260$ headers. I'd love to see someone test that out😂
Yeah 380 with shipping from china. Id like to buy all three, test them out, then let y'all know but that aint gonna happen
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      10-22-2019, 07:13 PM   #6
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Chinese exhaust parts tend to crack around the welds after a while.
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      10-22-2019, 10:09 PM   #7
mconrad1776
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How much should labor run for installation of these headers?
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      10-23-2019, 06:06 AM   #8
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Quote:
Originally Posted by mconrad1776 View Post
How much should labor run for installation of these headers?
I have seen people on the forums quoted from $800 and up...most around $1K. It's not a complicated job, just time consuming with very small areas to work in.

I think anyone who is slightly mechanically inclined can do it, you just have to take your time. Having a lift would be nice. I did mine on jack-stands.

That's why I mentioned in the other post that going with a brand that others have already had success with really makes a difference. Even the best fitting headers are a pain to install. If you get a brand that isn't pretty much a perfect fit...it just exaggerates the work.
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      10-23-2019, 09:00 PM   #9
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I ordered the Ali Express headers, and currently have the AA set on my other car. I will compare the two when they arrive. I'm thinking the Roundelwork and AA are coming from the same factory...guess I'll see.
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      10-23-2019, 09:06 PM   #10
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Originally Posted by cwlo View Post
I ordered the Ali Express headers, and currently have the AA set on my other car. I will compare the two when they arrive. I'm thinking the Roundelwork and AA are coming from the same factory...guess I'll see.
Keep me updated. One guy said ali express headers may have bad welds, but im guessing that was speculation.
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      10-23-2019, 09:08 PM   #11
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Quote:
Originally Posted by Rmtt View Post
I have seen people on the forums quoted from $800 and up...most around $1K. It's not a complicated job, just time consuming with very small areas to work in.

I think anyone who is slightly mechanically inclined can do it, you just have to take your time. Having a lift would be nice. I did mine on jack-stands.

That's why I mentioned in the other post that going with a brand that others have already had success with really makes a difference. Even the best fitting headers are a pain to install. If you get a brand that isn't pretty much a perfect fit...it just exaggerates the work.
Just saw your exhaust setup. it has headers and magnaflow system correct? Does it drone? How loud is it while cruising, and wot? Got a video?
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      10-24-2019, 07:07 AM   #12
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Quote:
Originally Posted by mconrad1776 View Post
Just saw your exhaust setup. it has headers and magnaflow system correct? Does it drone? How loud is it while cruising, and wot? Got a video?
No video...I don't even have a camera aside from my phone. But no drone and not loud at all while crusing. Slightly louder than the stock system, but deeper sounding. WOT it does get louder, but not obnoxious. Unless the windows are down...you don't notice it. I have had nothing but compliments.

But Magnaflow does include its own resonator.

In fact, my car was louder when it was stock when I bought it as the previous owner had done a muffler delete. And I think leaving my secondary cats in place played a big role in keeping noise and drone down.
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      10-25-2019, 09:11 PM   #13
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Quote:
Originally Posted by cwlo View Post
I ordered the Ali Express headers, and currently have the AA set on my other car. I will compare the two when they arrive. I'm thinking the Roundelwork and AA are coming from the same factory...guess I'll see.
When do you plan on installing them?
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      10-25-2019, 09:30 PM   #14
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First I have to receive them, and make sure they are acceptable. I am doing a manual swap, suspension overhaul, and m-conversion, so I havent figured my workflow yet. I'll give some feedback amd pics as soon as I get them.
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      10-25-2019, 10:41 PM   #15
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Quote:
Originally Posted by cwlo View Post
First I have to receive them, and make sure they are acceptable. I am doing a manual swap, suspension overhaul, and m-conversion, so I havent figured my workflow yet. I'll give some feedback amd pics as soon as I get them.
Thanks keep me updated
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      10-28-2019, 03:17 PM   #16
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BTW here's a sound clip I made a while ago.
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      11-06-2019, 05:24 PM   #17
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So I received the Aliexpress headers. I have a set of the AA headers installed on another car, so I was able to roughly compare them.

Look pretty much identical save for the AA badge. Weld quality is identical, location of 02 bungs looks identical, same construction, location of welds, etc.

I will not be installing them til after the New year, so I can't comment on fitment, but other than that, they appear to be the same.
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      11-06-2019, 08:00 PM   #18
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Quote:
Originally Posted by cwlo View Post
So I received the Aliexpress headers. I have a set of the AA headers installed on another car, so I was able to roughly compare them.

Look pretty much identical save for the AA badge. Weld quality is identical, location of 02 bungs looks identical, same construction, location of welds, etc.

I will not be installing them til after the New year, so I can't comment on fitment, but other than that, they appear to be the same.
Uh oh. Auto works given a run for their money 👀
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      11-06-2019, 08:58 PM   #19
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Quote:
Originally Posted by cwlo View Post
So I received the Aliexpress headers. I have a set of the AA headers installed on another car, so I was able to roughly compare them.

Look pretty much identical save for the AA badge. Weld quality is identical, location of 02 bungs looks identical, same construction, location of welds, etc.

I will not be installing them til after the New year, so I can't comment on fitment, but other than that, they appear to be the same.
Amazing, keep ya updated thanks
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      11-07-2019, 06:36 AM   #20
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Quote:
Originally Posted by LcossE82 View Post
Uh oh. Auto works given a run for their money 👀
They do look good.

I think the biggest complaint about most of these and other "EBay" headers have been consistency.

It's the same way in the Corvette world. You have 3 big players...then you have the "generic" ones like OBX.

The problem was if you got a good set...they looked really good. But others would order from the same seller and their set would look nothing like what someone else would buy.

It was analogous to if you got a set made on Monday, you were good. But if your set happened to be made close to quitting time at the end of the work week....the quality would be extremely different.
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      11-08-2019, 02:38 AM   #21
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Quote:
Originally Posted by Rmtt View Post
They do look good.

I think the biggest complaint about most of these and other "EBay" headers have been consistency.

It's the same way in the Corvette world. You have 3 big players...then you have the "generic" ones like OBX.

The problem was if you got a good set...they looked really good. But others would order from the same seller and their set would look nothing like what someone else would buy.

It was analogous to if you got a set made on Monday, you were good. But if your set happened to be made close to quitting time at the end of the work week....the quality would be extremely different.
100% this ^^

Most of what you pay for when you buy from *insert big-manufacturing Asian country here* is the level of quality control.

I'm wondering the quality of the metal too - ability to withstand heat cycles, rain, strain from thermal expansion, etc. I haven't ever seen any reports from any manufacturer about cracking headers, but it is a real concern.

Time will tell.
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      11-09-2019, 12:24 PM   #22
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Yah, I looked at the return policy before ordering.

As I mentioned, I already have an AA set, and was curious to the similarity. Especially since the Roundelworks ones were confirmed to be identical to AA, that led me to believe there was a good chance the Aliexpress ones were also of same origin, given the same 02 bung locations and appearance. Appears to be the case.
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