Omega Owners Forum
Chat Area => General Car Chat => Topic started by: Jimbob on 24 June 2012, 08:35:26
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For converting, and fitting 3.0 cats to my 3.2 estate.
Interesting to see them side by side. the 3.0's look a lot better flowing due to the angles that had to be compromised to fit the precat's in.
Lovely to have a car that doesnt sound like a tractor any more, and seems faster, more responsive and economical too.
Sorry those manifold nuts were such a problem, but your perseverence got there in the end.
And getting to drive that forklift around was the icing on the cake!
Cheers matey
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For converting, and fitting 3.0 cats to my 3.2 estate.
Interesting to see them side by side. the 3.0's look a lot better flowing due to the angles that had to be compromised to fit the precat's in.
Lovely to have a car that doesnt sound like a tractor any more, and seems faster, more responsive and economical too.
Sorry those manifold nuts were such a problem, but your perseverence got there in the end.
And getting to drive that forklift around was the icing on the cake!
Cheers matey
Jimbob in a forklift - oh heck :-X :-\ ;D
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Me driving the forklift....who would have thought it!
(http://i202.photobucket.com/albums/aa229/littlejimmym/misc%20car/DSC_0014_resize.jpg)
A few pics showing the differences between the 2 cats...
(http://i202.photobucket.com/albums/aa229/littlejimmym/misc%20car/DSC00161_resize.jpg)
(http://i202.photobucket.com/albums/aa229/littlejimmym/misc%20car/DSC00160_resize.jpg)
(http://i202.photobucket.com/albums/aa229/littlejimmym/misc%20car/DSC00162_resize.jpg)
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Looks like fun to me...!!! ;D
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So what are we looking at here Jb?
Master trimming the protruding Pre face lift pipe work?
Makes sense to mod the pre face lift ones as the lambda is already fitted post cat? Etc?
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Yes, grinding down the flange in the pic.
Prefacelift ones have a smoother angled down pipe as theres no precat to fit in.
Yup, one new lambda to drill...and no old one fill.
Will make any future removal much easier too.
Car much nicer to drive now, doesnt sound like a tractor!
when I turned the old ones upside down and shook....a lot of cat core fell out!
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One of my thoughts when face lift cats are removed was to take a suitable long blunt instruments and a bat, and smash the pre cat material out and remove it all together.
Do you think the pre cat material is britle enough to do that? I am assuming it is...?
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seemed to be ceramics falling out...so guess so
was certainly partly blocking mine and causing a restriction.
the old main cats are larger than their newer equivalents too.
Its a joy to have no more orange light glaring at me.
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One of my thoughts when face lift cats are removed was to take a suitable long blunt instruments and a bat, and smash the pre cat material out and remove it all together.
Do you think the pre cat material is britle enough to do that? I am assuming it is...?
Yes it is, it's done on a lot of diesel Astra H's.
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So what are we looking at here Jb?
Master trimming the protruding Pre face lift pipe work?
Makes sense to mod the pre face lift ones as the lambda is already fitted post cat? Etc?
The pre face lift ones have a pre-cat sensor for mixture control, you have to add a boss for the post cat lambda (which can be seen mounted in the pics above) :y
The pre facelift cats appear larger (possibly less restrictive due to the presence of only a single cat) plus access to the mounting nuts (and oil filter :y ) is a lot easier :y
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So what are we looking at here Jb?
Master trimming the protruding Pre face lift pipe work?
Makes sense to mod the pre face lift ones as the lambda is already fitted post cat? Etc?
The pre face lift ones have a pre-cat sensor for mixture control, you have to add a boss for the post cat lambda (which can be seen mounted in the pics above) :y
The pre facelift cats appear larger (possibly less restrictive due to the presence of only a single cat) plus access to the mounting nuts (and oil filter :y ) is a lot easier :y
Good stuff. Only down side being rattling heat shields. But easily fixed with a jubilee. :)
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Lol, yes, the facelift ones just fall off and then no rattle.
Would think total removal would not be an issue either as its not like the later ones have the.
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Me driving the forklift....who would have thought it!
(http://i202.photobucket.com/albums/aa229/littlejimmym/misc%20car/DSC_0014_resize.jpg)
A few pics showing the differences between the 2 cats...
(http://i202.photobucket.com/albums/aa229/littlejimmym/misc%20car/DSC00161_resize.jpg)
(http://i202.photobucket.com/albums/aa229/littlejimmym/misc%20car/DSC00160_resize.jpg)
(http://i202.photobucket.com/albums/aa229/littlejimmym/misc%20car/DSC00162_resize.jpg)
That is some forklift...... :D :D :D
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Lol, yes, the facelift ones just fall off and then no rattle.
Would think total removal would not be an issue either as its not like the later ones have the.
See, far superior model. :D ;D
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Me driving the forklift....who would have thought it!
(http://i202.photobucket.com/albums/aa229/littlejimmym/misc%20car/DSC_0014_resize.jpg)
That is some forklift...... :D :D :D
Its a Sanderson all terrain forklift, a greta and very reliable british built unit (sadly Sanderson no longer exist) which won a Gold Award in the 80's (seem to recall an advert with Johnny Ball in it!)
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Lol, here he is!:
(http://www.johnnyball.co.uk/images/jbbsales.jpg)
Although on a Teleporter 2 (we also have one of these but we are rebuilding the engine and velvet drive gearbox at the moment!)
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And the emissions test if your interested.....
Fast Idle
CO : 0.00%
HC : 2ppm
Lambda : 1.01
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Blimey, thats rather good!
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yes, went over the last few......best ever result I can find!
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So, seeing as my 3.2 cats are currently OK, is this mod worthwhile, either:
1) now
2) when precats fail, rather than move sensors
(all assuming my cats don't block)
?
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I'd guess that your pre cats will be one of the very last to go, if my experience is anything to go by.
....although I guess that depends how often Mrs TB drives it. ;)
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I'd guess that your pre cats will be one of the very last to go, if my experience is anything to go by.
....although I guess that depends how often Mrs TB drives it. ;)
Mrs TB drives like tunnie....
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So, seeing as my 3.2 cats are currently OK, is this mod worthwhile, either:
1) now
2) when precats fail, rather than move sensors
(all assuming my cats don't block)
?
Youve changed your tune ;)
http://www.omegaowners.com/forum/index.php?topic=103986.0
Your holiday must have done you good ;D
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I'd guess that your pre cats will be one of the very last to go, if my experience is anything to go by.
....although I guess that depends how often Mrs TB drives it. ;)
Mrs TB drives like tunnie....
With the digital throttle pedal then? ;D
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So, seeing as my 3.2 cats are currently OK, is this mod worthwhile, either:
1) now
2) when precats fail, rather than move sensors
(all assuming my cats don't block)
?
Youve changed your tune ;)
http://www.omegaowners.com/forum/index.php?topic=103986.0
Your holiday must have done you good ;D
You are implying there is a performance/economy gain. Thus worth considering. Or are these gains purely because your old cats were shagged?
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Well if you're going to be a fork truck driver you'd better watch this safety film. (Maybe not for the squeamish.)
http://www.youtube.com/watch?v=10ybeo2nSac (http://www.youtube.com/watch?v=10ybeo2nSac)
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That is absolutley brilliant Captain :D .Best bit of TV I have watched in ages ;D
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Well if you're going to be a fork truck driver you'd better watch this safety film. (Maybe not for the squeamish.)
http://www.youtube.com/watch?v=10ybeo2nSac (http://www.youtube.com/watch?v=10ybeo2nSac)
Hmmmm,whats for lunch :D :D :D ;D
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So, seeing as my 3.2 cats are currently OK, is this mod worthwhile, either:
1) now
2) when precats fail, rather than move sensors
(all assuming my cats don't block)
?
Youve changed your tune ;)
http://www.omegaowners.com/forum/index.php?topic=103986.0
Your holiday must have done you good ;D
You are implying there is a performance/economy gain. Thus worth considering. Or are these gains purely because your old cats were shagged?
interesting question...
I suspect there to be gains, based on the size and shape of them....
But mine were totally shagged.
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can i ask a stupid question but what has to be trimmed of to make the flanges mate up and i am guessing the lamba sensor wants to be in the same position roughly as it would be if the pre cat was fitted ?
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Well if you're going to be a fork truck driver you'd better watch this safety film. (Maybe not for the squeamish.)
http://www.youtube.com/watch?v=10ybeo2nSac (http://www.youtube.com/watch?v=10ybeo2nSac)
:D :D :D :D :D :D ;D ;D ;D ;D ;D ;D ;D ;D
We were shown a gory one 20 yrs ago but not like that ;D