Catch can needed?
Thread Starter
Intermediate
Joined: Jan 2016
Posts: 25
Likes: 14
From: Prairieville Louisana
Catch can needed?
I mainly drive in sport mode, not really aggressively.....anyone really an advocate for a catch can or is it really not needed?
Thanks for the replies and opinions. I understand Chevy didn't put them on, but want to know others opinions.
Thanks for the replies and opinions. I understand Chevy didn't put them on, but want to know others opinions.
Drifting
Joined: Dec 2012
Posts: 1,630
Likes: 203
From: MI
is a catch can needed to run the engine for years and many miles? no
Does it add extra protection ? probably
Do i have one or plan on installing one? nope
Does it add extra protection ? probably
Do i have one or plan on installing one? nope
Last edited by MikeLsx; Oct 23, 2016 at 10:02 PM.
Team Owner
Joined: Jan 2007
Posts: 29,063
Likes: 1,839
From: cookeville tennessee
ttt
OP here I don't care what other say to you these motors need one for sure. I don't care how you drive your car unless you drive it like a little old lade and never give it much gas at all.
You car with this inj set up needs one for sure. Even if only gets a cup of crap in it in a year that is that much not down into the intake and on the back side of the valves. I an N/A motor and yes I have one in almost 1 1/2 years have cleaned it one time with very little in it. Robert
You car with this inj set up needs one for sure. Even if only gets a cup of crap in it in a year that is that much not down into the intake and on the back side of the valves. I an N/A motor and yes I have one in almost 1 1/2 years have cleaned it one time with very little in it. Robert
Supporting Vendor
Joined: Aug 2013
Posts: 1,369
Likes: 294
From: Virginia
photo your dipstick level every 1000 miles and look for a change
look in the cold air tube between the mass air sensor and throttle body for oil
look behind the throttle body for oil
if you see anything that bothers you, then you are the type who would appreciate a c/c and i suggest begin researching one that has the functions most relevant to your issue(s).
if nothing bothers you, then all good, you are like most others putting up and down the road every day without one.
look in the cold air tube between the mass air sensor and throttle body for oil
look behind the throttle body for oil
if you see anything that bothers you, then you are the type who would appreciate a c/c and i suggest begin researching one that has the functions most relevant to your issue(s).
if nothing bothers you, then all good, you are like most others putting up and down the road every day without one.
Drifting
Joined: Aug 2002
Posts: 1,519
Likes: 431
From: MI
https://www.corvetteforum.com/forums...te-engine.html
There have been cases where engine warranty has been denied for modification of the system with a catch can. The risk is not worth it to me.
There have been cases where engine warranty has been denied for modification of the system with a catch can. The risk is not worth it to me.
Supporting Vendor
Joined: Aug 2013
Posts: 1,369
Likes: 294
From: Virginia
https://www.corvetteforum.com/forums...te-engine.html
There have been cases where engine warranty has been denied for modification of the system with a catch can. The risk is not worth it to me.
There have been cases where engine warranty has been denied for modification of the system with a catch can. The risk is not worth it to me.
I don't know what the hang up is with catch cans specifically on this subject but it goes the same for ANY aftermarket mod, the dealer reserves the right to void a claim for about anything it can put the blame on.
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Pro
Joined: Oct 2016
Posts: 546
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if you are worried about warranty leave your car stock or make sure it is stock when taking in for warranty work.
I don't know what the hang up is with catch cans specifically on this subject but it goes the same for ANY aftermarket mod, the dealer reserves the right to void a claim for about anything it can put the blame on.
I don't know what the hang up is with catch cans specifically on this subject but it goes the same for ANY aftermarket mod, the dealer reserves the right to void a claim for about anything it can put the blame on.
Pro
Joined: Nov 2013
Posts: 693
Likes: 158
From: Milwaukee WI
GM can deny a warranty for any reason. The are obligated to defend the denial only if challenged by the owner in court after the denial which can take a long time. And don't think they deny on a whim, they have their ducks in a row before blocking the claim.
Last edited by vettetwo; Oct 24, 2016 at 05:47 PM.
Pro
Joined: Oct 2016
Posts: 546
Likes: 89
You absolutely have a point there. At the same time, we are talking about something that could save the engine. Why would they want to stop that? They have also tested this engine for hundreds of thousands of miles. They know what the end result will be. You want to stop the things that cost you money and encourage, and eventually copy, those that save you money. That's not the behavior here. That's why its suspect.
Drifting
Joined: Dec 2012
Posts: 1,630
Likes: 203
From: MI
You absolutely have a point there. At the same time, we are talking about something that could save the engine. Why would they want to stop that? They have also tested this engine for hundreds of thousands of miles. They know what the end result will be. You want to stop the things that cost you money and encourage, and eventually copy, those that save you money. That's not the behavior here. That's why its suspect.
I know my dads yukon DI V8 has turned 80k miles this month. I asked him if he noticed any problems or anything weird. He said the car runs smooth, and gets around the same MPG as new. Better believe he runs the cheapest gas he can find also.
Pro
Joined: Nov 2013
Posts: 693
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From: Milwaukee WI
We do not know with all certainty why GM consistently states their engines do not need catch cans. We know very well the position of those selling catch cans, but warranty denials because catch cans have been added have never been tested which would disclose the reasons for GM denials.
That is absolutely correct. There are no results published for the long term effect of using a catch can. We see short term results all of the time with pictures of the gunk captured in the cans which is mostly condensation with oil in it.
We do not know with all certainty where the coking on GM engines comes from and to what extent, and it is starting to come out recently that it is not 100% caused by PCV fumes, but also by combustion byproducts which have several theories for minimization. I think we can be certain GM knows a lot more about this than has been disclosed on this Forum.
We do not know with all certainty where the coking on GM engines comes from and to what extent, and it is starting to come out recently that it is not 100% caused by PCV fumes, but also by combustion byproducts which have several theories for minimization. I think we can be certain GM knows a lot more about this than has been disclosed on this Forum.
Last edited by vettetwo; Oct 24, 2016 at 06:56 PM.