Actually, you can have a too free flowing exhaust for a turbo.
The turbo needs a certain amount of back pressure on the exhaust to make the
oil seals in the turbo work properly, if theres not enough pressure you will
get oil leaking past the seals into the exhaust and nice blue smoke.
But, as long as you have at least one silencer you should be ok, mine is
2.5" right through with one silencer.
Jim
--------------------------------------------------
From: "Matthew Wastell" <matt...@wastell.eu>
Sent: Tuesday, October 04, 2011 7:33 PM
To: <quantumowners@googlegroups.com>
Subject: RE: [Quantum Owners] Re: Endura DE into saloon
If it's turbo charged, as big an exhaust as you like after the turbo.....
If it's NA 2-2.5" all the way through for a 2.0 is about right.
Matthew
(only what I learned from others....)
-----Original Message-----
From: quantumowners@googlegroups.com
[mailto:quantumowners@googlegroups.com]
On Behalf Of Jim Hearne
Sent: 04 October 2011 13:37
To: quantumowners@googlegroups.com
Subject: Re: [Quantum Owners] Re: Endura DE into saloon
If theres no feedback to the ecu then i can't see why taking out the cat
would cause any problems.
It might affect the turbo backpressure slightly but it shouldn't do
anything
bad.
Hamish will be the man to know for sure.
Jim
--------------------------------------------------
From: "TonyV" <q...@avies.co.uk>
Sent: Tuesday, October 04, 2011 12:13 PM
To: "Quantum Owners Group" <quantumowners@googlegroups.com>
Subject: [Quantum Owners] Re: Endura DE into saloon
Couple more pics on the photobucket site, showing my newly-modified
inlet manifold.
I'm quite pleased with how that particular bit turned out. Although
I'm a little worried that the additional volume of the pipes leading
around the engine to the intercooler will lead to an increase in turbo
lag.
I've also started fabricating an upper engine mounting.
For this, I've used the Mondeo alternator mount (which is also the
engine mount), cut right back so that it isn't much more than just a
bracket which bolts to the engine in 4 places. I've welded that to a
cut-down mount which came from the ERST engine. I'll post more pics
once I've cleaned up the welds and painted it.
Once that's done, it's just a case of fibreglassing the hole in the
inner bay once more (I had to grind the first lot out to make more
room), and then bung the engine back in. Hopefully for the last time!
Which brings me to the next question : exhaust. I hadn't remembered,
but the Mondeo downpipe has a big "dustbin" welded into it.
Presumably a political converter of some sort.
There are no sensors (e.g. Lambda, O2) fitted into the exhaust
anywhere, so would it be OK to simply replace this with a piece of
straight pipe?
Will doing so provide any benefits (e.g. increased power) other than
actually fitting past the steering rack?
Any downsides?
TonyV
On Sep 13, 10:40 am, TonyV <q...@avies.co.uk> wrote:
Just to clarify slightly....my photobucket link is OK.
Jim is referring to a link in a following spam message which Jim has
now deleted.
(But it's accidentally repeated in the quoted text... =o) )
TonyV.
On Sep 12, 9:07 am, "Jim Hearne" <j...@quantums.info> wrote:
> Sorry people, don't follow that link, it's spam.
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