wet stacking
Hotshot
Joined: Oct 2003
Posts: 17,791
Likes: 99
From: Ashland City, TN
Think about this logically.
non spent fuel/oil will be blown out most likely in a turbo engine. unless you have really low boost during idle.
A non turbo engine will be more likely to build up in cylinder, and a turbo/supercharged engine, if operating properly will be more likely to build up into the cylinder.
This is purely by common sence.
I'm sure a combination of both is possible. But fuel will most likely be expelled into the exhaust in most situations.
If fuel is left in the cylinder to long it will break down the oil on the cylinder wall. like tim said, loosing lubrication.
Idle is important on a diesel, especially if you are one who lets it idle while you go to eat. =)
Unburnt fuel no matter what is bad.
non spent fuel/oil will be blown out most likely in a turbo engine. unless you have really low boost during idle.
A non turbo engine will be more likely to build up in cylinder, and a turbo/supercharged engine, if operating properly will be more likely to build up into the cylinder.
This is purely by common sence.
I'm sure a combination of both is possible. But fuel will most likely be expelled into the exhaust in most situations.
If fuel is left in the cylinder to long it will break down the oil on the cylinder wall. like tim said, loosing lubrication.
Idle is important on a diesel, especially if you are one who lets it idle while you go to eat. =)
Unburnt fuel no matter what is bad.
Hotshot
Joined: Oct 2003
Posts: 17,791
Likes: 99
From: Ashland City, TN
well, even at idle. is it astrometric.. (that might be wrong) the natural presure outside forcing air into the cylinder, or is it the turbo creating the presure to flow into the cylinders?
Elder User
Joined: Nov 2005
Posts: 555
Likes: 0
From: Cincinnati OH
w/o boost the cylinders will suck air on their own, find and idi and put your hand over the intake while it's running, just make sure it doesn't suck your shirt off you, jk.
as far as boost pushing stuff out the cylinder through the exhaust valve, like tim said if their is any valve overlap it is virtually irrelevant. two stroke diesel engines use the boost to blow the exhaust out the valve. if anyone reading this is doing glow plugs or injectors right now they could stick a long punch or screwdriver in there, bar the engine over, watch the closing of the intake valve in relation to when the piston starts going down after exhaust stroke.
as far as boost pushing stuff out the cylinder through the exhaust valve, like tim said if their is any valve overlap it is virtually irrelevant. two stroke diesel engines use the boost to blow the exhaust out the valve. if anyone reading this is doing glow plugs or injectors right now they could stick a long punch or screwdriver in there, bar the engine over, watch the closing of the intake valve in relation to when the piston starts going down after exhaust stroke.
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Posting Guru
Joined: Nov 2003
Posts: 2,214
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From: THUNDER BAY
Yeah when he told me about this it kinda interested me so I thought I would throw it out there to see what you guys had to say In my years of driving big truck have never seen this myself but also have never let my rig Idle for long periods of time
I googled this topic and read lots of threads from other sites and in most of them they talk about our 7.3,s having this problem guess they are full of it
thanks for the replies
W.S
I googled this topic and read lots of threads from other sites and in most of them they talk about our 7.3,s having this problem guess they are full of it
thanks for the replies
W.S
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Posting Guru
Joined: Nov 2003
Posts: 2,214
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From: THUNDER BAY
Originally Posted by Talyn
These guys in here would know man.
Lots of people rip on the 7.3 cause its in a ford. However, they are just uneducated.
Lots of people rip on the 7.3 cause its in a ford. However, they are just uneducated.
thats why I threw it out here
Postmaster
Joined: Jun 2007
Posts: 2,795
Likes: 1
From: Rogue River, OR
If "Wet Stacking was a problem with the 7.3 I would suspect that it would be a major topic of conversation.
Let me throw this out: Does anyone on this forum hav andPERSONAL knowledge of a 7.3 turbo wet stacking?
Rog
Let me throw this out: Does anyone on this forum hav andPERSONAL knowledge of a 7.3 turbo wet stacking?
Rog
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Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
Originally Posted by kawa
If "Wet Stacking was a problem with the 7.3 I would suspect that it would be a major topic of conversation.
Let me throw this out: Does anyone on this forum hav andPERSONAL knowledge of a 7.3 turbo wet stacking?
Rog
Let me throw this out: Does anyone on this forum hav andPERSONAL knowledge of a 7.3 turbo wet stacking?
Rog
Playing in the Dirt
Joined: Oct 2005
Posts: 2,302
Likes: 1
From: Southwest Georgia
Originally Posted by kawa
If "Wet Stacking was a problem with the 7.3 I would suspect that it would be a major topic of conversation.
Let me throw this out: Does anyone on this forum hav andPERSONAL knowledge of a 7.3 turbo wet stacking?
Rog
Let me throw this out: Does anyone on this forum hav andPERSONAL knowledge of a 7.3 turbo wet stacking?
Rog
Postmaster
Joined: Jan 2004
Posts: 3,207
Likes: 0
From: Kearney, Nebr
So I came up with another question. Not specifically related to the PSD, but is there a certain egt that wet stacking occurs? I know if I prolong my idle time my egts will get close to 200 in the summer. We have a pyro on one of our tractors and during prolonged idle periods it gets close to 100.
I guess its just kinda like a cold start. With my PSD I have a decent amount of smoke when egt's are at 200, but when they get to 300 the smoke is heavily reduced.
I guess its just kinda like a cold start. With my PSD I have a decent amount of smoke when egt's are at 200, but when they get to 300 the smoke is heavily reduced.
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Posting Guru
Joined: Nov 2003
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From: THUNDER BAY
Originally Posted by FARM69
So I came up with another question. Not specifically related to the PSD, but is there a certain egt that wet stacking occurs? I know if I prolong my idle time my egts will get close to 200 in the summer. We have a pyro on one of our tractors and during prolonged idle periods it gets close to 100.
I guess its just kinda like a cold start. With my PSD I have a decent amount of smoke when egt's are at 200, but when they get to 300 the smoke is heavily reduced.
I guess its just kinda like a cold start. With my PSD I have a decent amount of smoke when egt's are at 200, but when they get to 300 the smoke is heavily reduced.
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