cd.thomson
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| posted on 24/7/10 at 09:06 PM |
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fitting a cat inside a can?
Me again..
can anyone hazard a guess at the feasibility of installing a cat inside my mahoosive can? I don't really have any understanding of the internals
of a silencer.
Craig
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rusty nuts
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| posted on 24/7/10 at 09:07 PM |
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Why not??
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franky
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| posted on 24/7/10 at 09:08 PM |
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I know of quite a few where the cat is fitted inside a can, not sure on yours though as its got the 4 pipes going into it, do you have any idea of
its internal construction?
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GMPMotorsport
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| posted on 24/7/10 at 09:09 PM |
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Think the RSPCA might object
www.gmpdevelopments.co.uk
www.gmpmotorsport.co.uk
ARDS Instructer.
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SeaBass
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| posted on 24/7/10 at 09:12 PM |
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Sorry - don't get it....
You don't want to pay for proof of engine age but you want to spend more cash on installing a cat into an existing silencer...
[Edited on 24/7/10 by SeaBass]
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cd.thomson
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| posted on 24/7/10 at 09:18 PM |
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quote:
Originally posted by SeaBass
Sorry - don't get it....
You don't want to pay for proof of engine age but no you want to spend more cash on installing a cat into an existing silencer...
Or is the engine not old enough now and you know it?
overly cynical much? If you read the last thread all the way through you'll see I can't get a precise date from vauxhall. My only options
are an engine swap or an exhaust change/mod. The engine is definitely old enough I just can't prove it.
I'm glad of some positive responses! The four primaries enter the can and are "collected" into a single pipe in that first 6 inch
section before the band you can make out on the exhaust - then from there its just a standard can. 
Craig
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SeaBass
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| posted on 24/7/10 at 09:21 PM |
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Cynical - Smile first thing in the morning. Get it over with!
Thanks for clearing it up...
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franky
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| posted on 24/7/10 at 09:21 PM |
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what about ringing dax and borrowing a system? a lot of kit makers do it?
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cd.thomson
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| posted on 24/7/10 at 09:25 PM |
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quote:
Originally posted by franky
what about ringing dax and borrowing a system? a lot of kit makers do it?
I have spoken to dax and that wasn't suggested. I'm under the impression they only make them to order.
Now I know I'm not being retarded with the cat in can suggestion I'll see if my exhaust bloke will do the work for not too much money.
Craig
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franky
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| posted on 24/7/10 at 09:29 PM |
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its the material that may be expensive.... Feel for you with the hassle. Got me worried about mine now as mine is a 93 engine(with v5 etc) but had a
cat fitted when new....
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cd.thomson
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| posted on 24/7/10 at 09:34 PM |
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quote:
Originally posted by franky
its the material that may be expensive.... Feel for you with the hassle. Got me worried about mine now as mine is a 93 engine(with v5 etc) but had a
cat fitted when new....
you'll be fine bud, the emissions flowcharts dont take in to account whether it was fitted with a cat originally, only engine age.
Craig
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mark chandler
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| posted on 24/7/10 at 09:42 PM |
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Lots of cars collect and dump the exhaust straight into the cat, cannot see any real issues except that you lovely can may get spoilt.
Bikes have cats in the first part of the can these days when fitted.
You would I guess have to source a cat that would slip tightly inside, then make a collector inside to gather the primaries together... I do not know
how advisable it is to skin a cat and just use the entrails!!!
Regards Mark
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Volvorsport
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| posted on 24/7/10 at 10:15 PM |
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its a shame im off site for 5 weeks , i could have made the whole thing for you .
youll need to support the cat inside the can with a ring/packer of some sort and weld it in , thats it basically .
www.dbsmotorsport.co.uk
getting dirty under a bus
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GreigM
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| posted on 24/7/10 at 11:33 PM |
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I'd imagine that internally your 4 pipes combine into one single 2 inch straight through perforated pipe, which is surrounded by packing.
Fitting a cat would be a fairly simple job of getting a correctly sized cat, opening up the can, removing a piece of the inner tube (normally the
initial bit just after the 4 pipes have merged), and welding the cat in its place then repacking the can.
I'd imagine the cat would cost around £100 then labour for the job - say 3 hours - so if you got the job done under £200 you'd probably be
doing well.
[Edited on 24/7/10 by GreigM]
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BobM
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| posted on 25/7/10 at 07:20 AM |
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It will work fine but don't forget that the cat is not far off a foot long and will replace that much of your perforated tube so you'll
lose a significant proportion of your silencing.
The cat also runs very hot and will melt your exhaust wadding.
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RazMan
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| posted on 25/7/10 at 10:03 AM |
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How to fit a cat in a can
A little bit of WD40 helps
Well somebody had to do it
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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