I have owned my 2001 MR2 for 3 months and taken it's mileage from 15,000 to 22,000 including a hamering 2 weeks up and down alpine passes in France / Austria and Italy.
I then found this web site and got scarred of the stories on CAT failure so last night I took the O2 sensors out and had a look. 3 hours later the car was rebuilt without the pre-CAT's. This included drilling out and re-tapping 2 of the 10mm studs when they snapped.
Thanks for scarring me, the LH CAT showed early signs of damage, the RH CAT had lost 2mm of ceramic from 50% of it's top surface.
The car has used no oil in the 7,000 ml of use by me so I consider last nights work as a good preventative measure to ensure that it stays that way.
s:D :D s:D
Welcome along to the club Alan, glad that the forum has been of use to you already. You won't regret doing the work. s:) :) s:)
Quote from: "alanl"Thanks for scaring me, the LH CAT showed early signs of damage, the RH CAT had lost 2mm of ceramic from 50% of it's top surface.
The car has used no oil in the 7,000 ml of use by me so I consider last nights work as a good preventative measure to ensure that it stays that way.
s:D :D s:D
Welcome Alan. Now you are in, the wallet gets thinner s:shock: :shock: s:shock:
I guess the small amount lost might still be around (maybe in the Main Cat), so its worth keeping an eye on things just in case.
This is going to sound like I have way too much money and not enough sense, but would anyone local-ish to the Chesterfield/Sheffield area be willing to gut my precats in return for a fair and reasonable fee??
I have practically no tools of my own s:oops: :oops: s:oops: , am not really that 'handy' when it comes to mechanical stuff s:oops: :oops: s:oops: (i'm a computer engineer, what more can I say!?!? s:lol: :lol: s:lol: ) and, despite all the well written guides and what-have-you, I still wouldn't really feel that confident doin it myself due to the above points...
so, whad'ya say?!? s:P :P s:P
what is the benefit of removing the precats? and doesnt this send up a warning light on the dash?
Quote from: "bluephoenix"what is the benefit of removing the precats? and doesnt this send up a warning light on the dash?
Surely you have seen 1 of the hundreds of threads on pre cat and engine failures? s:? :? s:?
Quote from: "mr-s_turbo"Quote from: "bluephoenix"what is the benefit of removing the precats? and doesnt this send up a warning light on the dash?
Surely you have seen 1 of the hundreds of threads on pre cat and engine failures? s:? :? s:?
I was just about to ask if BP was joking! s:roll: :roll: s:roll:
Sorry Liz I think I missed the punchline! What did you mean?
Quote from: "bluephoenix"Sorry Liz I think I missed the punchline! What did you mean?
Liz meant that there is so much information regarding the benefits and reasons for gutting your precats that you must have posted that question as a joke s:wink: :wink: s:wink:
Yeah, what Heath said!! s:) :) s:)
I have just returned from a weekend in Wales, If I use my imagination then I think the exhaust note is a little "raspier" but the difference is so small in both sound and performance that it could be my imagination. Fuel consumption is unaltered from the previous 40+ mpg for a mixture of slightly illegal motorway speeds, gentle cross country roads, and spirited mountain passes.
Others have reported a slight popping from the exhaust on the overrun. Not mine but is this possibly due to air leaks in the exhasut system caused by re-using the old gaskets ?
s:D :D s:D
Quote from: "alanl"Others have reported a slight popping from the exhaust on the overrun. Not mine but is this possibly due to air leaks in the exhasut system caused by re-using the old gaskets ?
s:D :D s:D
Not on my cars... No leaks apparent on either of them. The noises aren't very apparent if you are still using the stock silencer.
Quote from: "alanl"Fuel consumption is unaltered from the previous 40+ mpg for a mixture of slightly illegal motorway speeds, gentle cross country roads, and spirited mountain passes.
40mpg s:shock: :shock: s:shock: s:shock: :shock: s:shock: s:shock: :shock: s:shock: s:shock: :shock: s:shock:
Quote from: "heathstimpson"40mpg s:shock: :shock: s:shock: s:shock: :shock: s:shock: s:shock: :shock: s:shock: s:shock: :shock: s:shock:
No wonder he cant hear it! s:D :D s:D