Beware!! Bad AW Header Install Experience
Originally Posted by allmotor_2000
The two problems as I stated were:
(i) The O2 bung is off a few degrees and hits the block
(ii) The rear 'J' portion of the 'A' pipe is not a good fit with the rear manifold - the two flanges are not parallel by any means
Bobbydoedoe will get his fixed on Tuesday
(i) The O2 bung is off a few degrees and hits the block
(ii) The rear 'J' portion of the 'A' pipe is not a good fit with the rear manifold - the two flanges are not parallel by any means
Bobbydoedoe will get his fixed on Tuesday
I'm not challenging what you say. We all know you know your engines.

But do you think you could've put them on correctly? The part of the headers with the "AlphaWerks" label on them goes on the rear of the engine. I know for a fact that if you do this part wrong, nothing will line up.
Originally Posted by Red-CL
I'm not challenging what you say. We all know you know your engines. 
But do you think you could've put them on correctly? The part of the headers with the "AlphaWerks" label on them goes on the rear of the engine. I know for a fact that if you do this part wrong, nothing will line up.

But do you think you could've put them on correctly? The part of the headers with the "AlphaWerks" label on them goes on the rear of the engine. I know for a fact that if you do this part wrong, nothing will line up.
Mine isnt going to be installed yet...Not until i get my spring/shock issue fixed...and than I'll do my headers probably around Jan. 8th unless I can sell mine for $600 than I'm going to buy some used Comptechs or a comptech exhaust
Originally Posted by CLean B
dont re sell them, they will fit they're just a bitch to get them on there
Originally Posted by Red-CL
I'm not challenging what you say. We all know you know your engines. 
But do you think you could've put them on correctly? The part of the headers with the "AlphaWerks" label on them goes on the rear of the engine. I know for a fact that if you do this part wrong, nothing will line up.

But do you think you could've put them on correctly? The part of the headers with the "AlphaWerks" label on them goes on the rear of the engine. I know for a fact that if you do this part wrong, nothing will line up.
Also, this particular header, the AlphaWerks label went on the front. Every other OBX and AW header... the label went on the back. I actually put it with the AW label manifold in the back and it the moment I had it up there, I was wondering what the hell was wrong.
I'll give you $1000 if you can even bolt up the headers with the front and rear manifolds swapped - you don't have to tighten anything!
Originally Posted by allmotor_2000
You cannot swap the two manifolds - the angle of the flange is different. If you put the front one on the rear, it is right over the rear transaxle - there is NO WAY you could ever get the A-pipe even close. If you put the back one in the front, the flange is nearly touching the front mount.
Also, this particular header, the AlphaWerks label went on the front. Every other OBX and AW header... the label went on the back. I actually put it with the AW label manifold in the back and it the moment I had it up there, I was wondering what the hell was wrong.
I'll give you $1000 if you can even bolt up the headers with the front and rear manifolds swapped - you don't have to tighten anything!
Also, this particular header, the AlphaWerks label went on the front. Every other OBX and AW header... the label went on the back. I actually put it with the AW label manifold in the back and it the moment I had it up there, I was wondering what the hell was wrong.
I'll give you $1000 if you can even bolt up the headers with the front and rear manifolds swapped - you don't have to tighten anything!
EDIT: Oh yeah if anyone has the balls to buy my headers and put em on they are forsale
https://acurazine.com/forums/car-parts-sale-361/fs-alpha-werks-headers-164707/
If they arent gone by Jan 8th I'm going to take a shot at it
Originally Posted by Red-CL
Even Comptechs had their fair share of problems when they first began. It happens.
Originally Posted by whitepearltsx
How do you know Comptech has never had a bad header?
Just because they never posted on the forums, doesnt mean that they never had a bad one.
Just because they never posted on the forums, doesnt mean that they never had a bad one.
Originally Posted by scalbert
Been around long enough to know what has worked and what hasn't. We have gotten more negative reviews of non-Comptech headers than we have of the initial supplier. In fact, from what we have seen, there has never been a Comptech installation issue yet.
Originally Posted by VeeralS05
Mine isnt going to be installed yet...Not until i get my spring/shock issue fixed...and than I'll do my headers probably around Jan. 8th unless I can sell mine for $600 than I'm going to buy some used Comptechs or a comptech exhaust
My lack of response does not mean I don't want to help. I am just snowed under right now.
However, in light of this issue I would be in the same shoes as allmotor. If extra work is needed such as welding, I do not currently have the tools to do so.
Originally Posted by scalbert
Going to a shop eh.??
My lack of response does not mean I don't want to help. I am just snowed under right now.
However, in light of this issue I would be in the same shoes as allmotor. If extra work is needed such as welding, I do not currently have the tools to do so.
My lack of response does not mean I don't want to help. I am just snowed under right now.
However, in light of this issue I would be in the same shoes as allmotor. If extra work is needed such as welding, I do not currently have the tools to do so.
Originally Posted by scalbert
Sounds good, and/or if you get Comptech headers... 

Originally Posted by VeeralS05
haha atleast they got the label right on these...
EDIT: Oh yeah if anyone has the balls to buy my headers and put em on they are forsale
https://acurazine.com/forums/showthread.php?t=164707
If they arent gone by Jan 8th I'm going to take a shot at it
EDIT: Oh yeah if anyone has the balls to buy my headers and put em on they are forsale
https://acurazine.com/forums/showthread.php?t=164707
If they arent gone by Jan 8th I'm going to take a shot at it
Originally Posted by allmotor_2000
You cannot swap the two manifolds - the angle of the flange is different. If you put the front one on the rear, it is right over the rear transaxle - there is NO WAY you could ever get the A-pipe even close. If you put the back one in the front, the flange is nearly touching the front mount.
Also, this particular header, the AlphaWerks label went on the front. Every other OBX and AW header... the label went on the back. I actually put it with the AW label manifold in the back and it the moment I had it up there, I was wondering what the hell was wrong.
I'll give you $1000 if you can even bolt up the headers with the front and rear manifolds swapped - you don't have to tighten anything!
Also, this particular header, the AlphaWerks label went on the front. Every other OBX and AW header... the label went on the back. I actually put it with the AW label manifold in the back and it the moment I had it up there, I was wondering what the hell was wrong.
I'll give you $1000 if you can even bolt up the headers with the front and rear manifolds swapped - you don't have to tighten anything!
I figured so. And again I know you know what you talking about.
It just seems so odd to me that the first couple batches can be damn near perfect (so far) and the batches with the raised price are having all these problems.
Originally Posted by Bobbydoedoe
don't give up ur hopes on these headers yet, sure there are fitment issues, but nothign big. I will get my headers check out at this muffler shop allmotor reccomanded me, and i will post updates on monday.
Originally Posted by rezurex
damn... i had no fitment issues at all, none of these problems you guys are experiencing whatsoever. i guess i was a lucky one 


Mine went on smooth as hell.
Originally Posted by rezurex
damn... i had no fitment issues at all, none of these problems you guys are experiencing whatsoever. i guess i was a lucky one 

Originally Posted by Red-CL

Mine went on smooth as hell.
Alphawerks headers photos
I really wanted to share this with everyone here, the Alphawerks headers are a decent deal for the money if you are willing to see this and accept it:

This first one has miswelded internals that don't line up. Extremly poor job of sanding/buffing out burrs that are left from production. Also there are small "gaps" between the pipes. I don't know if this is normal, but look at the next pic...

Towards the top of the picture, you will see another gap...
Conclusion: The welds are decent when connecting the flanges and the piping togther. They are virtually identical with the other photos of the Megans. The inside welds/piping are what my concern are. As I understand most headers have a resonance problem around 2500 RPM. I am almost postive that this is the reason. I have not installed the headers yet and am reluctant now fearing serious resonance issues and long term quality... Never the less, I will be installing them next week just to give the headers a chance. My mechanic will buff out most of the burrs with a Dremel and hopefully that will minimizes the problems but I won't know till i get them on. Wish me luck!
This first one has miswelded internals that don't line up. Extremly poor job of sanding/buffing out burrs that are left from production. Also there are small "gaps" between the pipes. I don't know if this is normal, but look at the next pic...
Towards the top of the picture, you will see another gap...
Conclusion: The welds are decent when connecting the flanges and the piping togther. They are virtually identical with the other photos of the Megans. The inside welds/piping are what my concern are. As I understand most headers have a resonance problem around 2500 RPM. I am almost postive that this is the reason. I have not installed the headers yet and am reluctant now fearing serious resonance issues and long term quality... Never the less, I will be installing them next week just to give the headers a chance. My mechanic will buff out most of the burrs with a Dremel and hopefully that will minimizes the problems but I won't know till i get them on. Wish me luck!
Originally Posted by Nexusindustry
Alphawerks requires that all the dynos we display be done at an independent facility in South Florida. The reason for South Florida, is to assure that the product will make power on any USDM car anywhere in the country. These dynos are done in 90+ degree temperatures and at over 100% humidity. In fact when we did our dyno testing on our 350Z headers it was so hot that the car overheated several times in the middle of the dyno runs. It is because the Alphawerks dynos are independent and done under such harsh conditions that Nexus Industry stands behind every single one of those products.
Victor D.
Nexus Industry, Inc.
Victor D.
Nexus Industry, Inc.
Originally Posted by Nexusindustry
When I say that R+D is in the details it is literally that. Many products look the same because of the restrictions that fitment places on the design.
I do not know what others companies headers are made out of, but ours are real 100% t-304 stainless-steel. Additionally, you have to look at the welds and the seals that are created by the gaskets. If you have leaks you have less efficient performance. We were very particular about this aspect of system during the R+D process. In the end the hp gains are attributed to the flow characteristics and the bends on the inside of the piping and the quality of the seal created to ensure that flow stays constant and uniform.
Each time we put it to test flow, changes are made that even we can't decipher the difference. What we have to do is mark each version 1, 2, 3, 4, etc. to know which one made the best flow and then the most power in mating with the engine because even we can't tell the difference many times.
To demonstrate how identical different versions of headers look alike during the R+D process, take a look at our 350z headers below. The one on the left is our USDM version and the one on the right is the original JDM piece from Alphawerks. Not even I can tell the difference except for the number we scratch into each flange during R+D.

If I have any random R+D pieces left over from recent testing I will post them if anyone wants me to really go the extra mile. Remeber all these parts come from Alphawerks Racing Development to us and we make sure that their JDM applications fit the USDM models. Additionally we test every piece for fit, seal, flow and power delivery to assure they back up their claims. If the Alphawerks Racing Development didn't make the power then we ourselves would not be involved in even distributing the product.
Good question though and I hope I have answered it sufficiently...
Victor D.
www.nexusindustry.com
I do not know what others companies headers are made out of, but ours are real 100% t-304 stainless-steel. Additionally, you have to look at the welds and the seals that are created by the gaskets. If you have leaks you have less efficient performance. We were very particular about this aspect of system during the R+D process. In the end the hp gains are attributed to the flow characteristics and the bends on the inside of the piping and the quality of the seal created to ensure that flow stays constant and uniform.
Each time we put it to test flow, changes are made that even we can't decipher the difference. What we have to do is mark each version 1, 2, 3, 4, etc. to know which one made the best flow and then the most power in mating with the engine because even we can't tell the difference many times.
To demonstrate how identical different versions of headers look alike during the R+D process, take a look at our 350z headers below. The one on the left is our USDM version and the one on the right is the original JDM piece from Alphawerks. Not even I can tell the difference except for the number we scratch into each flange during R+D.

If I have any random R+D pieces left over from recent testing I will post them if anyone wants me to really go the extra mile. Remeber all these parts come from Alphawerks Racing Development to us and we make sure that their JDM applications fit the USDM models. Additionally we test every piece for fit, seal, flow and power delivery to assure they back up their claims. If the Alphawerks Racing Development didn't make the power then we ourselves would not be involved in even distributing the product.
Good question though and I hope I have answered it sufficiently...
Victor D.
www.nexusindustry.com
:ibthisguysexcuses/answertothisthread:
Sure they’re expensive, but Comptech seems to be the only one who can build headers with consistent quality.
Comptech spent the initial money for the Engineering & design; all the others are cheap ripoff’s.
They’ve had their problems in the spring department, but when it comes to headers:
Comptech > *
Comptech spent the initial money for the Engineering & design; all the others are cheap ripoff’s.
They’ve had their problems in the spring department, but when it comes to headers:
Comptech > *
Originally Posted by VeeralS05
Mine isnt going to be installed yet...Not until i get my spring/shock issue fixed...and than I'll do my headers probably around Jan. 8th unless I can sell mine for $600 than I'm going to buy some used Comptechs or a comptech exhaust
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From: www.ExceleratePerformance.com
Sorry for not responding earlier but I just got back from stuffing my face with good food and beer over the holidays. It seems that there is an issue at hand. I need Allmotor or Bobbydoedoe to email me pictures of the issue so that I can rectify the problem. I am already in contact with Alpha Werks and they are addressing the issue. However, this seems to be an isolated incident as we have had no problems as of yet, excluding this one, with installs. There have been headers from the same batch that have been installed on CL/TL's without any issues. Please take the time to email me the pictures so I can forward them to Alpha Werks.
Josh
Excelerate LLC
Josh
Excelerate LLC
they wnat us to only dyno in south florida ? lol thats kinda rediculous considering conditions in south florida rarely go above 85% humidity. I believe it was only 100% (not over) nevertheless, it seems like they want us to dyno in shitty conditions .. if this is so the only true way to get the numbers they want i guess would be to isolate the temperature and density of the air in a garage.
Only way i can think of it working like they want it too.
Also those internals of the alphawerks headers kinda upset/scare me. If mine are like that Im going to be pretty pissed, as my friend has a set of megan headers and they are perfect inside ....
Only way i can think of it working like they want it too.
Also those internals of the alphawerks headers kinda upset/scare me. If mine are like that Im going to be pretty pissed, as my friend has a set of megan headers and they are perfect inside ....
Originally Posted by Excelerate
Sorry for not responding earlier but I just got back from stuffing my face with good food and beer over the holidays. It seems that there is an issue at hand. I need Allmotor or Bobbydoedoe to email me pictures of the issue so that I can rectify the problem. I am already in contact with Alpha Werks and they are addressing the issue. However, this seems to be an isolated incident as we have had no problems as of yet, excluding this one, with installs. There have been headers from the same batch that have been installed on CL/TL's without any issues. Please take the time to email me the pictures so I can forward them to Alpha Werks.
Josh
Excelerate LLC
Josh
Excelerate LLC


