Darren-B Posted July 14, 2012 Share Posted July 14, 2012 I noticed a couple of weeks ago that the car was getting LOUDER & had a couple of people ask me if I had de-cats. After removing my Berks I discovered that indeed I do have de-cats, expensive ones!! Hopefully these are warranted??? I`m quite disapointed as the remains of the Cats are now rattling around in my Milltek Quote Link to comment Share on other sites More sharing options...
Ekona Posted July 14, 2012 Share Posted July 14, 2012 More worrying is if the engine has scavenged any of that back in... That sucks dude, when did you get them? Quote Link to comment Share on other sites More sharing options...
Darren-B Posted July 14, 2012 Author Share Posted July 14, 2012 Can`t really work out how the flow can go backwards?? Had them about 5months I guess, they were on Will370z`s car originally Quote Link to comment Share on other sites More sharing options...
Ekona Posted July 14, 2012 Share Posted July 14, 2012 You get minor pressure going back when the exhaust valves open the same time as the intake valves, doesn't happen often but can do under certain partial load conditions, for economy and emission reasons. It's why so many mk3 MR2s had blown engines due to their pre-cats breaking down. Unlikely to happen, but not impossible. No warranty on them then, gotta be worth a shout for a goodwill gesture though I reckon. Where/when did Will get them? Quote Link to comment Share on other sites More sharing options...
Darren-B Posted July 14, 2012 Author Share Posted July 14, 2012 Pretty unlikely on the zed, the headers are fairly long. It still runs fine but may get a tweak on the map if I can`t get them replaced, might break the 400 hub hp now Quote Link to comment Share on other sites More sharing options...
Neilp Posted July 14, 2012 Share Posted July 14, 2012 Dan at AME warned keyser of this when running a supercharger and told him he will blow them out the exhaust Quote Link to comment Share on other sites More sharing options...
Zugara Posted July 14, 2012 Share Posted July 14, 2012 Yep, thats the arse blown right outta them...... Quote Link to comment Share on other sites More sharing options...
Will370z Posted July 14, 2012 Share Posted July 14, 2012 what did u do to my lovely berks. Coulsnt cope with the awesomeness of the supercharger Quote Link to comment Share on other sites More sharing options...
NeilMH Posted July 14, 2012 Share Posted July 14, 2012 Their website says "perfect for forced induction use". Quote Link to comment Share on other sites More sharing options...
Darren-B Posted July 14, 2012 Author Share Posted July 14, 2012 Their website says "perfect for forced induction use". Link? I'm going to email them about it tomorrow : Quote Link to comment Share on other sites More sharing options...
Mark@Abbey m/s Posted July 14, 2012 Share Posted July 14, 2012 Darren, does the damaged cat look like it has run hotter than the other side? also what side failed? I have seen this happen after the cats have been knocked about causes the catalyst brick to become dislodged then it cant radiate the heat properly. if you need a map tweak just send me a email. pretty busy at the moment thou. Quote Link to comment Share on other sites More sharing options...
Darren-B Posted July 14, 2012 Author Share Posted July 14, 2012 Dan at AME warned keyser of this when running a supercharger and told him he will blow them out the exhaust The same thing happen to my mx5 last year :teeth on a stock cat. I didn't really expect this to happen with the berks which apparently a performance part The real issue I have is that I think the cats are now in the rear silencer as I have a nasty rattley exhaust note now Quote Link to comment Share on other sites More sharing options...
Darren-B Posted July 14, 2012 Author Share Posted July 14, 2012 Mark, thanks for your input, both cats have blown so either they have both been damaged which is unlikely or they aren't upto the job. If I can't get them replaced I'll get some straight pipes on & give you a ring Quote Link to comment Share on other sites More sharing options...
NeilMH Posted July 14, 2012 Share Posted July 14, 2012 Link http://www.berktechnology.com/product/nissan-350zinfiniti-g35/high-flow-catshfcs/350zg35-high-flow-catalytic-converters Quote Link to comment Share on other sites More sharing options...
DoogyRev Posted July 15, 2012 Share Posted July 15, 2012 hope. Your get them replaced Darren Quote Link to comment Share on other sites More sharing options...
spursmaddave Posted July 15, 2012 Share Posted July 15, 2012 Says perfect for FI use so I would be emailing them with some pictures Doesn't look 'perfect' to me Quote Link to comment Share on other sites More sharing options...
Darren-B Posted July 15, 2012 Author Share Posted July 15, 2012 Link http://www.berktechnology.com/product/nissan-350zinfiniti-g35/high-flow-catshfcs/350zg35-high-flow-catalytic-converters Thanks Well I`ve sent a n email to Berks so will see what is said Quote Link to comment Share on other sites More sharing options...
HaydnH Posted July 15, 2012 Share Posted July 15, 2012 I read recently that the standard cats will last longer than HFCs when supercharging. Might be worth trying them if you still have them assuming they don't lose you too much power. Quote Link to comment Share on other sites More sharing options...
spursmaddave Posted July 15, 2012 Share Posted July 15, 2012 My Berks were 2nd hand about 2 years ago and done a fair few miles, apart from a hairline weld they are fine Will's were brand new just over a year ago were they not? Quote Link to comment Share on other sites More sharing options...
Ekona Posted July 15, 2012 Share Posted July 15, 2012 I could understand them breaking up in a turbo application with the incredible amounts of extra heat, but an SC? You've not got solid mounts on the engine or gearbox, have you Darren? Quote Link to comment Share on other sites More sharing options...
Will370z Posted July 15, 2012 Share Posted July 15, 2012 My Berks were 2nd hand about 2 years ago and done a fair few miles, apart from a hairline weld they are fine Will's were brand new just over a year ago were they not? Yup had them installed after wales last year Quote Link to comment Share on other sites More sharing options...
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