Catalyst failures, 4200s.....how many? - Page 3 - Maserati Forum
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post #31 of 74 Old 06-30-2010, 07:56 AM
 
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Your wish is my command!
LOL! That's hilarious: "Cat/Bottom/Road"

Maybe it should've been: "Cat/Bottom/Road/Speed Bump/Warranty Claim" lol



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post #32 of 74 Old 06-30-2010, 08:19 AM Thread Starter
 
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LOL! That's hilarious: "Cat/Bottom/Road"
Emmmm...no.......very apt and helpful!




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post #33 of 74 Old 06-30-2010, 06:34 PM
 
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Another one to add to the list. I had the rh cat start to break up on my 2005 gs, 51k miles. Fortunately no other damage done...
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post #34 of 74 Old 06-30-2010, 07:06 PM Thread Starter
 
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Alexholmes....same guy off Sportsmaserati?

Details of same - primary or secondary, how did it present, reason given or investigated for failing, inside warranty period or what did Maserati UK say?


All info gratefully recieved!


P
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post #35 of 74 Old 06-30-2010, 07:33 PM
 
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Emmmm...no.......very apt and helpful!


Oh, I'm not saying it's not helpful - I just think it's funny the way he labeled them.



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post #36 of 74 Old 06-30-2010, 07:35 PM Thread Starter
 
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Oh, I'm not saying it's not helpful - I just think it's funny the way he labeled them.
No probs DD!!!



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post #37 of 74 Old 07-01-2010, 11:29 AM
 
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Originally Posted by DesertDawg View Post
LOL! That's hilarious: "Cat/Bottom/Road"

Maybe it should've been: "Cat/Bottom/Road/Speed Bump/Warranty Claim" lol
Cat Bottom Road... Sounds like a Blues song

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post #38 of 74 Old 07-01-2010, 01:37 PM Thread Starter
 
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Guys, anyone know why in this type of exhaust/engine design it gets sucked back into the engine?

P
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post #39 of 74 Old 07-01-2010, 02:47 PM
 
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Guys, anyone know why in this type of exhaust/engine design it gets sucked back into the engine?

P
Same reason water can get sucked all the way through the entire exhaust system if you're driving through a deep puddle - you lift your foot off the throttle & you can get reverse pressure for a short duration of time.



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post #40 of 74 Old 07-01-2010, 02:54 PM Thread Starter
 
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Same reason water can get sucked all the way through the entire exhaust system if you're driving through a deep puddle - you lift your foot off the throttle & you can get reverse pressure for a short duration of time.
DD, thought that was more a problem with the situation of the low air intake pipe!!!!

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post #41 of 74 Old 07-01-2010, 02:55 PM
 
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Originally Posted by BeeYouZeeZee View Post
Cat Bottom Road... Sounds like a Blues song

LOL! True.

Or a Queen song...


I was just a naughty lad,
Want to drive a Masi bad,
And I fell in love before I took deliveryyyy...
So I sat my big fat fanny,
On those leather nooks & crannies,
V-8 engine, you made a bad boy out of me....

Aaaaaare, you gonna get me home tonight?
Ohhhhh, that speed bump didn't feel so right,
Aaaaare you gonna puke your platinum out?
Cat-Bottom-Road,
You make my cams stop spinnin' round.




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post #42 of 74 Old 07-01-2010, 03:02 PM Thread Starter
 
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Oh......heres the explanation.........re sucking of pieces into engine,

"The exhaust valve opens before the bottom dead center on the power stroke, in fact about 40į before the bottom so on the overrun, especially if it is a high speed overrun, the flow of gas can reverse in the exhaust system."


P
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post #43 of 74 Old 07-01-2010, 03:03 PM
 
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DD, thought that was more a problem with the situation of the low air intake pipe!!!!

P
Sorry if I wasn't clear: I meant through the exhaust... in ANY vehicle, if you happen to be caught by surprise & be unfortunate enough to encounter high-water conditions while you're driving, you should always try to go at a slow, steady pace & never take your foot off the throttle - otherwise you can suck water through the exhaust pipe all the way back up into the engine. This is why you see military vehicles that are being set up for fording that have snorkels on both the intake AND exhaust.

Knowing that fact actually saved a car I had once - freeway was flooded, so the idiot police were directing everyone off onto the access road, which was LOWER than the freeway... water was coming up about halfway up my doors & seeping into the vehicle, other vehicles were stranded in the water already... I just kept going about 5mph, never took my foot off the gas & made it through. Car needed lots of work after that (luckily, insurance covered it), but the engine was saved!



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post #44 of 74 Old 07-01-2010, 03:04 PM Thread Starter
 
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Nooooooooooooooooooo...tell me Freddie aint still alive?????!!!!

Very funny.......must youtube that for the forum!!!!




P
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post #45 of 74 Old 07-01-2010, 10:28 PM Thread Starter
 
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Originally Posted by Maserati Blue View Post
Here is a crappy picture taken with my mobile phone. This is taken with the car parked on my driveway, you can clearly see the huge bulk of the primary CAT coming down from the downpipes, the bottom of it is rather close to the ground.
MB, hope you don't mind, I attached your photo to another board to illustrate the position of the exhaust on the car, thanks, P
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