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Stainless steel headers, exhausts and JDM twin-pipe mufflers.


Sean Dezart

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7 hours ago, Sean Dezart said:

Check out your ancestors, if they're not American indians or Chinese....they're European ? !

Nope, we are all African according to scientific research and evidence.  Most North Americans   arrived from Africa via Europe after waiting in Europe for transoceanic ships to be invented.  Others arrived by walking the long route from Africa to Middle East, to Asia, to Alaska. They arrived earlier but  all paths are from Africa.

The crazy aboriginal "rights" in Canada would not agree with the above.  They would claim that they were here first and own all the land.... so if we apply this to the Moon, the USA owns it as Armstrong was there first.... but his ancestors came from Africa.

 

 

FYI:

I was riding on the Mayflower
When I thought I spied some land
I yelled for Captain Arab
I have yuh understand
Who came running to the deck
Said, “Boys, forget the whale
Look on over yonder
Cut the engines
Change the sail
Haul on the bowline”
We sang that melody
Like all tough sailors do
When they are far away at sea

“I think I’ll call it America”
I said as we hit land
I took a deep breath
I fell down, I could not stand
Captain Arab he started
Writing up some deeds
He said, “Let’s set up a fort
And start buying the place with beads”
Just then this cop comes down the street
Crazy as a loon
He throw us all in jail
For carryin’ harpoons

Ah me I busted out
Don’t even ask me how
I went to get some help
I walked by a Guernsey cow
Who directed me down
To the Bowery slums
Where people carried signs around
Saying, “Ban the bums”
I jumped right into line
Sayin’, “I hope that I’m not late”
When I realized I hadn’t eaten
For five days straight

I went into a restaurant
Lookin’ for the cook
I told them I was the editor
Of a famous etiquette book
The waitress he was handsome
He wore a powder blue cape
I ordered some suzette, I said
“Could you please make that crepe”
Just then the whole kitchen exploded
From boilin’ fat
Food was flying everywhere
And I left without my hat

Now, I didn’t mean to be nosy
But I went into a bank
To get some bail for Arab
And all the boys back in the tank
They asked me for some collateral
And I pulled down my pants
They threw me in the alley
When up comes this girl from France
Who invited me to her house
I went, but she had a friend
Who knocked me out
And robbed my boots
And I was on the street again

Well, I rapped upon a house
With the U.S. flag upon display
I said, “Could you help me out
I got some friends down the way”
The man says, “Get out of here
I’ll tear you limb from limb”
I said, “You know they refused Jesus, too”
He said, “You’re not Him
Get out of here before I break your bones
I ain’t your pop”
I decided to have him arrested
And I went looking for a cop

I ran right outside
And I hopped inside a cab
I went out the other door
This Englishman said, “Fab”
As he saw me leap a hot dog stand
And a chariot that stood
Parked across from a building
Advertising brotherhood
I ran right through the front door
Like a hobo sailor does
But it was just a funeral parlor
And the man asked me who I was

I repeated that my friends
Were all in jail, with a sigh
He gave me his card
He said, “Call me if they die”
I shook his hand and said goodbye
Ran out to the street
When a bowling ball came down the road
And knocked me off my feet
A pay phone was ringing
It just about blew my mind
When I picked it up and said hello
This foot came through the line

Well, by this time I was fed up
At tryin’ to make a stab
At bringin’ back any help
For my friends and Captain Arab
I decided to flip a coin
Like either heads or tails
Would let me know if I should go
Back to ship or back to jail
So I hocked my sailor suit
And I got a coin to flip
It came up tails
It rhymed with sails
So I made it back to the ship


Well, I got back and took
The parkin’ ticket off the mast
I was ripping it to shreds
When this coastguard boat went past
They asked me my name
And I said, “Captain Kidd”
They believed me but
They wanted to know
What exactly that I did
I said for the Pope of Eruke
I was employed
They let me go right away
They were very paranoid

Well, the last I heard of Arab
He was stuck on a whale
That was married to the deputy
Sheriff of the jail
But the funniest thing was
When I was leavin’ the bay
I saw three ships a-sailin’
They were all heading my way
I asked the captain what his name was
And how come he didn’t drive a truck
He said his name was Columbus
I just said, “Good luck”

 

 

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 "The present world system is based on a conceptual framework where owning represents an investment of our life, our time, our name, our character, or any other aspect of our being, for the sake of control over the thing owned.

 It's difficult to realize the depth of devastation this has brought to humanity, but every historical record that presently exists attests to the visible devastation wrought in wars of conquest and subjugation of peoples for the sake of ownership!"

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6 hours ago, Mark Maras said:

 "The present world system is based on a conceptual framework where owning represents an investment of our life, our time, our name, our character, or any other aspect of our being, for the sake of control over the thing owned.

 It's difficult to realize the depth of devastation this has brought to humanity, but every historical record that presently exists attests to the visible devastation wrought in wars of conquest and subjugation of peoples for the sake of ownership!"

We should all follow the 'hive' system then of collective ownership and responsability ? This has surely been sold to us a despotism, dictatorship....?

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18 hours ago, 240260280 said:

Nope, we are all African according to scientific research and evidence.  Most North Americans   arrived from Africa via Europe after waiting in Europe for transoceanic ships to be invented.  Others arrived by walking the long route from Africa to Middle East, to Asia, to Alaska. They arrived earlier but  all paths are from Africa.

The crazy aboriginal "rights" in Canada would not agree with the above.  They would claim that they were here first and own all the land.... so if we apply this to the Moon, the USA owns it as Armstrong was there first.... but his ancestors came from Africa.


He said his name was Columbus
I just said, “Good luck”

I believe that Vespucci was a more serious explorer.

18 hours ago, 240260280 said:

You're right - I forgot the Afro-Amercians - my depest apologies and yes, of course - we all hail from there as if Star Treks' Genesis project landed there !

Anyway, back to stainless steel exhausts.....plenty of space under your Zs as my line tucks up above the floor chassis rails and finally.....life is all about choice : choose yours wisely.

 

And have a great weekend all ! :-)

18 hours ago, 240260280 said:

 

 

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  • 7 months later...

In 2020 I will have been producing performance exhausts for 10 years !

Firstly, I would like to thank all my loyal customers over the years to make this happen and I’ve been rewarded in return by having many of you as friends. I’d also like to thank all those Z-professionals and track, rally and hill-climb competitors who continue, respectively, to sell and exploit my parts !

To celebrate this I’ve produced some exclusive super-goodies which I’m including as gifts* with each 2020 order and so as to be clear :

Silencer, muffler order = free keyring (your choice)

Manifold/header order = free T-shirt (quote size ‘L’ or ‘XL’)

Complete kit = free 10yrs keyring and T-shirt (quote size ‘L’ or ‘XL’)

These items may also be bought seperately with worldwide shipping** included in the prices below :

Keyring 10 yrs : us$11

 Keyring Z profile 50yrs : us$15

 T-shirt 50yrs : us$23 (two sizes only ‘L’ and ‘XL’)

*so long as stocks lasts !

**I will group ship so as to reduce the overall shipping cost. Obviously if bought as an extra and included in an exhaust order, there will be no shipping cost ; so less expensive !

Please contact me via mail (or PM) for any enquiries : seanz@wanadoo.fr

So, Merry Christmas and I wish you all a happy and above all healthy New Year with new Z (and ZX) adventures ! :cool:

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  • 2 weeks later...

Frenchie, I hope you don’t mind me commenting here - happy to delete if you object.

 

Before buying Sean’s full Race / Sport system, I ran the MSA header with 2.5” back to a turbo muffler on both my L26 and it’s replacement hot L28. Due to a shotgun sounding misfire I managed to utterly blow the baffles and Sean very kindly and speedily (at his cost!!) sent me his Classic muffler to help me out of a hole and able to get to an event I really wanted to go to.

 

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The classic is a straight through (spot the Z I worked hard to get into the pic!! )

 

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I was absolutely jaws on the floor at how much power had previously been left on the table. She now rushed to 6.7k RPMs rather than topping out at 5.6k ish. I like the classic raspy sound of the turbo muffler however this one is deeper and more TVR / V8 burbley. But the system as it was still droned like hell between 2.2-3krpm and was exhausting on the motorway.

 

I then bought Sean’s full race / sport on the same engine and set up. The quality is great.

 

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Here’s the headers side-by-side for comparison - a very sexy beast!!!

 

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The fit under the car is tight but a near tailored fit. Don’t have a decent photo to show except the one below. At first I was worried about how close to the gearbox it was but NEVER has there been a single clonk even with some serious thrashing on bumpy fast country roads.

 

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The power at the top end just opened up to another level - I’ve had to add a limit on my 123 ignition at 6.8k rpm as the engine now sprints into the mid to high 7k region and I don’t want to bust something as I’m not running forged pistons and rods. I rarely need to cross 6k - unless I want to really upset an N/A 911 or Impreza STi! ;)

 

The sound is very nicely muted below 3.5ish maybe 3.8k rpm but anything over that is totally grin inducingly vocal! With the windows down and over 6krpm with a barrier or wall on the driver’s side, I dare say it’s a bit of a nascar howl! Absolutely ZERO resonance or drone on the motorway now or where it existed on the old system.

 

Here’s my first drive after fitting (headphones on, sound up) ...

 

 

Here’s a much longer one with some thrashing and some cruising while I was tuning carbs (yes that AFR was all over the place with the wrong needles). The window was slightly open so the iPhone microphone struggled a bit to capture the fullness of the bass in the sound track ...

 

 

My buddy (same orange car as Sean’s pics) with an L26 has the exact same package but with a JDM muffler. Driving our cars back to back was a hoot and showed that on the smaller engine the JDM was louder at the top end than the classic muffler on mine with the bigger engine (he’s running a 275 degree cam I think versus my 270) - a bit raspier on his and bassier on mine. He has a beautifully progressive power band with this set up.

 

 

I did, for personal reasons, want to see if I could make her a little quieter and Sean being a beautiful gentleman (no matter what they say ) has kindly sent over the track muffler to test. Sadly I’ve been utterly buried for the last few months and not had a moment to do anything but store it or even to be able to see my car! It’s a straight through but with a much bigger box than the classic so it should be quieter but flow the same. Will report back once I get her on.

 

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That's interesting, opening up the system decreased the drone. I have been fighting drone for yrs now and all my efforts seem to do is move it up or down the rpm range.


Well my friend, my original system didn’t have the centre resonator - it was merely 2.5” pipe back from the MSA collector to a Magnaflow turbo box (and later the Z-Story classic muffler) at the back. Apparently this is the classic hot-rod setup that the PO had installed. I merely ceramic coated the lot.

Sounded way louder and more aggressive with delicious popping sounds on the overrun. Sounded very race car like, but alas, the droning drilled into your brain when cruising in 4th/5th between 50-70mph and became unbearable for anything more than 5 mins.

The popping sounds are still there but a lot less anti-social and more like someone remembered to put the lid on the sauce pan while making popcorn. On the old system and with the L26 she would even shoot out a two foot yellow flame when coming off the power at 6k RPM! Scared the b’jeezez out of me and impressed the driver of the TR6 following! ;)

I know little about exhaust design but I would say that Sean’s centre resonator and it’s position along the system greatly eliminates the drone. I believe it has a lot to do with the length from the collector to the tip of the muffler and the frequency of the reflected waves along the length of the line. The expansion in the resonator takes the energy out of it and the position changes the standing wave frequency (or something like that). Also, the whole thing essentially being a wind instrument means that changing the primary diameter and lengths + change of metal type from mild to stainless steel is likely to change the frequency characteristics yet again.

I imagine Sean has been experimenting with getting it all to work together as a system.


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16 hours ago, grannyknot said:

That's interesting, opening up the system decreased the drone. I have been fighting drone for yrs now and all my efforts seem to do is move it up or down the rpm range.

Exhaust drone, anyone can google it to know the cause but it IS sound freqencies not only from the exhaust but combining with tire noise vibrating up through the chassis too. This is why it's only heard/felt at highway speeds. The simple addition of a resonator eliminates this by allowing the gas to expand therefore altering the freqencies. But a resonator does much more. Not only does it curb the dBs leaving the rear (still plenty loud if wished !) but it encourages exhaust chamber scavenging (again, please Google it) to help release more torque and power. Alis' swap to my Race-Sport header obviously helped enormously combined with the 2x secondary pipes becomming 1x as far back as possible (the rear of the gearbox in fact) so as to prevent any suck-back of exhaust gases up the pipes again towards the head.

Each cylinder sends gas pulses down the primary pipes and behind these pulses are vacuums that help suck out the next detonation point gases and so on and so on. These pulses are to be encouraged and therefore the exhaust gases to be stablised -  whilst not losing any gas velocity.....so not too big a diameter pipe, not too small with room to expand just after the 6 become 2x3 which become 2 and finally join to 1x.

What surprises me is that MSA and before them d*** Barbour (perhaps others) have been selling these straight-tru pipes for decades telling people that they're performacne exhausts when in fact they're just the cheapest mock-ups they can find to sell on !

The 6-1 header is particulary awful at producing exhaust drone and killing any power gains an attenttive owner might have invested in his engine......so long as it's noisy - the client will feel fast and be happy. Just like sticking on a cherry-bomb muffler to a 50cc m-bike and feeling like Evel Knievel....

hot damn - is that his Z ? https://www.banpei.net/2009/04/07/popular-bosozoku-cars-nissan-fairlady-s30

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  • 2 months later...

Latest exhaust batch - Spring 2020

 My latest batch has arrived and shipping has begun for paid-up orders. If you have reserved parts with a deposit, I invite you to complete your payment so I may also ship yours.

 I'm very satisfied with my new header flange allowing easier fitting and tightening against the engine head plus larger porting for better performance. Lastly, it's lighter - saving nearly 1/2 kilo (1.1lbs) !

 Don't forget when ordering that now I stock new valve-cover bolts and inlet/outlet stud kits - both in stainless steel, reasonably priced.

 I also offer a choice between two gasket versions : Stock ‘A’ for carbs and Efi ‘B’ with injection cut-outs – please specify which when ordering

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