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Z22Se 4-2-1 Exhaust - Manzo Brand, Initial Photos


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#1 blackoctagon

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Posted 10 October 2020 - 09:06 PM

After looking at fabricating my own 4-2-1 exhaust I decided to buy an off the shelf unit.
Following the chronology it would appear that this Manzo brand one is a 'homage' to the Weapon-R exhaust.

Most importantly for me the trickiest fabrication was done - the manifold itself (4-2 part)- and I can handle the downpipe (2-1 part) and the cat etc. myself.


The following photos are mostly without commentary, but i'll answer questions if there are any.

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#2 blackoctagon

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Posted 10 October 2020 - 09:10 PM

This part is of no use to a VX220 fitment, but may be good for Astras or Vectra - someone can check that because I can't.
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Std. vs. 4-2-1:
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This is the full kit for the benefit of non-VX220 z22se users -
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Flange detail (head to manifold)-
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Flange detail (manifold to downpipe)-
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Edited by blackoctagon, 10 October 2020 - 09:15 PM.


#3 blackoctagon

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Posted 10 October 2020 - 09:13 PM

Straightness of flanges from factory. I've seen and done better, but in reality the gasket will being it together. If I hate it before fitment i'll mill it.
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Some internal pipe shots:
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All in all worth the money to use as a base, but you get what you pay for.

Edited by blackoctagon, 10 October 2020 - 09:16 PM.


#4 FLD

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Posted 14 October 2020 - 07:40 AM

Interesting design.  I had a crack at making a manifold many years ago.  not welded for 10+ years and it was a proper abortion of a job!  Needed a bit more practice before I started!  I suspect this one would foul the clam as it looks to project from the engine a fair way but I like the 4-2-1 design of it.  The collectors look a bit gash but as you say it could be price driven.  Switch these out for a hydroformed collector and it'd be far better.  Inside pics look on par with what I made :sick:



#5 blackoctagon

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Posted 14 October 2020 - 09:42 AM

If I was starting from scratch it's not what I would have done, but as a balance of cost (the whole thing was only £184, imported from the US) and function, and being me prepared to modify it I am happy to play with it.

My constraints are that I don't want to change my backbox and need a cat, so I only need to deal with the in-between bits.

The collectors can be accessed by my long die grinder and I have a factory full of qualified welders who are more interested in having a look at it than doing their actual work.
Now that I have the ability to edit the ECU maps i'm sure I can squeeze something out of it.

#6 oakmere

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Posted 14 October 2020 - 11:54 AM

My Tusudo version was better than that at the collector but like you say a die grinder will help.
You need to cut into the boot to fit this 👍.

My car produced good torque with this manifold compared to similar spec cars with a 4-1 manifold.

#7 blackoctagon

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Posted 20 October 2020 - 08:49 AM

Sorry, I forgot - The manifold was Weapon R, THEN Tsudo, and now Manzo.

I have a new engine coming, so I am waiting until that arrives to help me mock up where the cut out needs to be.

#8 OneYet

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Posted 28 October 2020 - 07:27 PM

Many years ago some swedish people did the Weapon R thing.

I found the thread but most of the pictures are gone.

On page 11 there is still a picture of the cut-out and the heatshielding he made up.

Oh, it is all in swedish. :D

http://www.vx220.org...ge-11?hl=weapon



#9 blackoctagon

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Posted 28 October 2020 - 09:13 PM

Thank you.
I've mined the available pictures from the thread. That will help a lot.

#10 thomas2761

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Posted 29 October 2020 - 09:11 AM

https://forum.opel-s...pic=32662&st=15



#11 thomas2761

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Posted 29 October 2020 - 09:17 AM

https://forum.opel-s...ic=12761&st=120



#12 thomas2761

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Posted 29 October 2020 - 09:18 AM

https://forum.opel-s...pic=12761&st=60

 

 

Kind regards

Thomas



#13 blackoctagon

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Posted 18 November 2020 - 10:02 PM

Thomas,
Danke für die weblinks. Ich werde ein konto erstellen, um auf das forum zugreifen.


Here are new fitment photos done on a new engine i received so that people can see the manifold without a car around it. (click for bigger)

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