[v12-engine] exhaust

Having had my 4 catalytic converters removed and replaced with the UK pipes
for my 88 Series III Vanden Plas saloon, I can testify under oath that this
makes a significant improvement in the performance of the big car. Not to
mention that this means 4 furnaces have been removed from the undersides. It
definitely feels as though I have 50 horsepower more on tap. No penalty in
noise, smoothness, driveability or anything else; and reducing the heat has
to be a big benefit.
Gregory

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It wont pass emissions though right?

Id love to do this, but the smog nazis in CA will kill me.

DA
94 XJ12

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I don’t doubt the improvement in zoom, comma pause BUT just how do you
intend to pass emissions testing? If you want even more zoom, think about
giving air pump the flick pass as well. Kirby’s book highlights what “some”
people have done to make that change.

Roland-----Original Message-----
From: owner-v12-engine@jag-lovers.org
[mailto:owner-v12-engine@jag-lovers.org]On Behalf Of Dr Gregory
Andrachuk
Sent: Thursday, November 30, 2000 7:07 PM
To: v12-engine@jag-lovers.org
Subject: [v12-engine] exhaust

Having had my 4 catalytic converters removed and replaced with the UK pipes
for my 88 Series III Vanden Plas saloon, I can testify under oath that this
makes a significant improvement in the performance of the big car. Not to
mention that this means 4 furnaces have been removed from the undersides. It
definitely feels as though I have 50 horsepower more on tap. No penalty in
noise, smoothness, driveability or anything else; and reducing the heat has
to be a big benefit.
Gregory

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Hi all,

Before even thinking of starting my project car (which is dead now), I will have
to have a complete exhaust system. It’s not complete now, I am missing one of
the front intermediate pipes and the two front silencers (Haynes terms). What
can I do? Can I leave the two front silencers out and let someone make two
replacement pipes, or will the car be too noisy.

Hey, I work with a limited budget. This project is supposed to give some fun,
not cost me a lot of $$$! If I can get the car on the road, maybe I will throw
in an RVS-exhaust.

Car in question is 1979 DDS Series 2, Euro. We have no smog tests.

Thanks,

Ewout
The Netherlands

Dr Gregory Andrachuk wrote:

Having had my 4 catalytic converters removed and replaced with the UK pipes
for my 88 Series III Vanden Plas saloon, I can testify under oath that this
makes a significant improvement in the performance of the big car. Not to
mention that this means 4 furnaces have been removed from the undersides. It
definitely feels as though I have 50 horsepower more on tap. No penalty in
noise, smoothness, driveability or anything else; and reducing the heat has
to be a big benefit.
Gregory

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http://www.jag-lovers.org/cgi-bin/majordomo

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Just how much zoom would one expect from the loss of an air pump? Are we
just talking the loss in HP from the extra drag on the engine? Even though
the parts catalogues don’t annotate it, Canadian XJ-Ses didn’t get air pumps
until ~86-87MY according to the dealer here in Victoria BC. Mine is an 82
which has no air pump from the factory(water rails are not drilled and
tapped for the sensors either, just flat casting spots. This is contrary to
the original 1982 owners manual which describes the air pump system. They
also only have one set of cats vice the four in US cars and this is
annotated in the parts catalogue. Anyone looking for the idler pulley to
replace the air pump might want to call some Canadian wreckers.
Patrick
82 HE-----Original Message-----
From: owner-v12-engine@jag-lovers.org
[mailto:owner-v12-engine@jag-lovers.org]On Behalf Of Roland & Deanne
Inman
Sent: Thursday, November 30, 2000 6:26 PM
To: v12-engine@jag-lovers.org
Subject: RE: [v12-engine] exhaust

I don’t doubt the improvement in zoom, comma pause BUT just how do you
intend to pass emissions testing? If you want even more zoom, think about
giving air pump the flick pass as well. Kirby’s book highlights what “some”
people have done to make that change.

Roland

-----Original Message-----
From: owner-v12-engine@jag-lovers.org
[mailto:owner-v12-engine@jag-lovers.org]On Behalf Of Dr Gregory
Andrachuk
Sent: Thursday, November 30, 2000 7:07 PM
To: v12-engine@jag-lovers.org
Subject: [v12-engine] exhaust

Having had my 4 catalytic converters removed and replaced with the UK pipes
for my 88 Series III Vanden Plas saloon, I can testify under oath that this
makes a significant improvement in the performance of the big car. Not to
mention that this means 4 furnaces have been removed from the undersides. It
definitely feels as though I have 50 horsepower more on tap. No penalty in
noise, smoothness, driveability or anything else; and reducing the heat has
to be a big benefit.
Gregory

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Hey, I work with a limited budget. This project is supposed to give some
fun,
not cost me a lot of $$$!

You really, really, really bought the wrong kind of car…

Cheers,

Jeb

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http://www.jag-lovers.org/cgi-bin/majordomoFrom: “Ewout Belderok”

I don’t doubt the improvement in zoom, comma pause BUT just how do you
intend to pass emissions testing? If you want even more zoom, think about
giving air pump the flick pass as well. Kirby’s book highlights what “some”
people have done to make that change.

A good many of us still do not have to pass emissions tests of any kind.

Others who do, live in states where passing the test is satisfactory; no
visual inspection required. An engine in good operating order should have
no trouble passing the test without cats.

Californians are screwed, but you guys voted 'em in.

Cheers,
Bry

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Daniel Arsenault wrote:

It wont pass emissions though right?

Id love to do this, but the smog nazis in CA will kill me.

Well, it all depends on how important it is to you. I know of one person
here in the Atlanta area who has a highly modified XJ-S. Come time for
the tailpipe sniff, he replaces the cats and then has the test done,
then removes the cats again. Each year he does this.

I also know of folks in CA who remove and replace their engines to
enable their cars to pass the emission test. After the test, the “dirty”
engines go back in.

Please note this is not my personal recommendation!

Best regards,

Gregory Wells
Coventry West, Inc.
New, Rebuilt, & Used Jaguar Parts


800-331-2193 x103
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Bry in Virginia wrote:

I don’t doubt the improvement in zoom, comma pause BUT just how do you
intend to pass emissions testing? If you want even more zoom, think about
giving air pump the flick pass as well. Kirby’s book highlights what “some”
people have done to make that change.

A good many of us still do not have to pass emissions tests of any kind.

Others who do, live in states where passing the test is satisfactory; no
visual inspection required. An engine in good operating order should have
no trouble passing the test without cats.

Californians are screwed, but you guys voted 'em in.

Visual inspections have been part of the Arizona
tests for the better part of 20 years.  No cats, no
airpump,  no canister,  NO PASS.

I am afraid this will become the norm in time and those
cars that have been modded may fail to pass these
kind of tests in the future.

Just my 2 cents.

Gary

86 XJ-S
93 XJ40 

https://www4nl.asml.nl/nonconf/dept/GFSUS/html/cipus.html*****************************************************************
Gary Johnson Email: @Gary_Johnson1
ASML Phone: (602) 383-4483
NPI Pager: (888) 524-0479


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Visual inspections have been part of the Arizona
tests for the better part of 20 years. No cats, no
airpump, no canister, NO PASS.

I am afraid this will become the norm in time and those
cars that have been modded may fail to pass these
kind of tests in the future.

I remain hopeful that sooner or later a little common sense will prevail
in visual-inspection states and the emissions tests will only test
emissions compliance, not the means by which compliance was attained.

Bry

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looking for 2 pipes between cats an mufflers.mine were replaced
with iron pipes.–
genoAUSTINHEALEY
spanaway, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–

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