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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


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  #11  
Old 07-09-2013, 09:35 PM
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Quote:
Originally Posted by HOTRODHARLEY View Post
Pull off your TB after 20k... And see how much oil is on there. Oil is never ever meant to be in the combustion chamber... All an engine should see is air and fuel in the top end... 100k on a motor is nothing. "Running ok" is not the same as running like brand new... Try 300k on an engine. A catch can is a great addition to extending an engines life span. And really... What's a $100 investment for a $40...$50... $60,000 truck/car..? How much did you spend painting your pretend can to match..? Think about it....
I actually did pull off my TB while installing the catch can to install my fastman TB. There was no oil at all in the TB. The blade just looked a little dirty. Was kinda of surprised and so was my friend considering all the horror story's I've read with people running without catch cans.
Oh yeah and I have 40,000 miles on my truck. I can post a pic if the TB if you want.

And yes I spent $7 to paint my "pretend" catch can. lol
BTW this truck will be long gone before 300K miles. Who keeps a car/truck that long anyways?
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  #12  
Old 07-09-2013, 10:41 PM
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Oil in the intake tract. Not the TB... I've owned 3 HEMI vehicles and have seen it in every one... And I mean quite a bit of oil. Not a couple drops...
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  #13  
Old 07-10-2013, 12:16 AM
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Quote:
Originally Posted by HOTRODHARLEY View Post
Pull off your TB after 20k... And see how much oil is on there. Oil is never ever meant to be in the combustion chamber... All an engine should see is air and fuel in the top end... 100k on a motor is nothing. "Running ok" is not the same as running like brand new... Try 300k on an engine. A catch can is a great addition to extending an engines life span. And really... What's a $100 investment for a $40...$50... $60,000 truck/car..? How much did you spend painting your pretend can to match..? Think about it....
I was going to say pretty much the same thing and thought "why bother ?"
I find it ironic that OP has started a thread about his color-matched DIY catch can, and now is saying they are waste of time, more or less (kinda like a "CAI" that draws in radiant heat from the engine bay).
The biggest reason for a catch can isn't for reasons of prolonging engine life anyway, it's to keep oil vapors from mixing with the incoming fuel and lowering the octane, which promotes the detonation that Hemis are prone to, especially tuned ones. I've experienced this firsthand, and adding the catch can (which was recommended by my cmr tuner) helped alleviate this condition.
Obviously, a CC that has a way to seperate/filter the oil from the air going into the intake is going to be superior to one that doesn't. It doesn't have to be expensive or fancy, either. I have seen DIY cans that are true accumulator/seperators that cost about $50 to make, and I'm sure work quite well.
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  #14  
Old 07-10-2013, 12:29 AM
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Sweet setup and great for bringing it over here too
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  #15  
Old 07-10-2013, 12:42 AM
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Quote:
Originally Posted by HOTRODHARLEY View Post
Oil in the intake tract. Not the TB... I've owned 3 HEMI vehicles and have seen it in every one... And I mean quite a bit of oil. Not a couple drops...
Gotcha. Maybe I will take it off this weekend and check it..

Quote:
Originally Posted by RAM EM View Post
I was going to say pretty much the same thing and thought "why bother ?"
I find it ironic that OP has started a thread about his color-matched DIY catch can, and now is saying they are waste of time, more or less (kinda
like a "CAI" that draws in radiant heat from the engine bay).
The biggest reason for a catch can isn't for reasons of prolonging engine life anyway, it's to keep oil vapors from mixing with the incoming fuel and lowering the octane, which promotes the detonation that Hemis are prone to, especially tuned ones. I've experienced this firsthand, and adding the catch can (which was recommended by my cmr tuner) helped alleviate this condition.
Obviously, a CC that has a way to seperate/filter the oil from the air going into the intake is going to be superior to one that doesn't. It doesn't have to be expensive or fancy, either. I have seen DIY cans that are true accumulator/seperators that cost about $50 to make, and I'm sure work quite well.
So you were going to say pretty much the same thing, but disagree with him. OOOOk

That's a first I've of N/A hemi's are prone to detonation. Have any info about that?

and yes your CAI post are awesome...
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Last edited by BlownGP; 07-10-2013 at 12:45 AM.
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  #16  
Old 07-10-2013, 12:43 AM
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Quote:
Originally Posted by fastNugly @ BP View Post
Sweet setup and great for bringing it over here too
Thank you for your positive criticism.
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  #17  
Old 07-10-2013, 01:25 AM
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Quote:
Originally Posted by BlownGP View Post
Gotcha. Maybe I will take it off this weekend and check it..



So you were going to say pretty much the same thing, but disagree with him. OOOOk

That's a first I've of N/A hemi's are prone to detonation. Have any info about that?

and yes your CAI post are awesome...
I don't disagree with him at all. I disagree with you. Sorry if that was misunderstood.

Plenty of info on the web about Hemis and detonation (spark knock, preignition, if you prefer). Google it. Ask the guys on here. Talk to a cmr tuner.

Don't understand the CAI compliment but thanks.

Not trying to start anything, I think your CC looks cool. I just put function over form (most of the time), regardless of price or branding. I love to DIY, but I won't do something that performs less than a manufactured product just so I can say I did it and/or saved a buck. JMO. Good luck with your mods, sincerely.
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  #18  
Old 07-10-2013, 08:54 AM
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Quote:
Originally Posted by RAM EM View Post

The biggest reason for a catch can isn't for reasons of prolonging engine life anyway, it's to keep oil vapors from mixing with the incoming fuel and lowering the octane, which promotes the detonation that Hemis are prone to, especially tuned ones. I've experienced this firsthand, and adding the catch can (which was recommended by my cmr tuner) helped alleviate this condition.
Obviously, a CC that has a way to seperate/filter the oil from the air going into the intake is going to be superior to one that doesn't. It doesn't have to be expensive or fancy, either. I have seen DIY cans that are true accumulator/seperators that cost about $50 to make, and I'm sure work quite well.

x2

Our local CMR is a Hemi tuning specialist, and on top building custom Hot Rods up to 2000 crank HP
Does a ton of work on the new 5.7, 6.1 and 6.4L Eagle Hemi's
...but wont even take on a new customer until they run a Catch Can for at least a few weeks
to reduce the amount of oil film coating the inside of the intake manifold.

If you ever saw a Hemi with the intake removed, you would be shocked!
...and the amount of oil my BT Catch Can has removed from going back into the intake over the past 2.5 years is quite disturbing.
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Last edited by BlackRamHemi; 07-10-2013 at 09:01 AM.
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  #19  
Old 07-10-2013, 11:25 AM
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Quote:
Originally Posted by BlackRamHemi View Post
x2

Our local CMR is a Hemi tuning specialist, and on top building custom Hot Rods up to 2000 crank HP
Does a ton of work on the new 5.7, 6.1 and 6.4L Eagle Hemi's
...but wont even take on a new customer until they run a Catch Can for at least a few weeks
to reduce the amount of oil film coating the inside of the intake manifold.

If you ever saw a Hemi with the intake removed, you would be shocked!
...and the amount of oil my BT Catch Can has removed from going back into the intake over the past 2.5 years is quite disturbing.
This is just not Hemi's
I have a Jeep Wrangler (3.6L Penstar) and that thing requires a catch can as well.
I took the TB out too to check and low and behold there was oil. This was only with 800 miles on the odometer
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  #20  
Old 07-10-2013, 12:29 PM
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Quote:
Originally Posted by fastNugly @ BP View Post
This is just not Hemi's
I have a Jeep Wrangler (3.6L Penstar) and that thing requires a catch can as well.
I took the TB out too to check and low and behold there was oil. This was only with 800 miles on the odometer
Agreed. Most any modern engine would benefit from a catch can.
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